linaro-toolchain

linaro-toolchain@lists.linaro.org

8 participants
5624 discussions

[CI-NOTIFY]: TCWG Bisect tcwg_bmk_tk1/llvm-master-arm-spec2k6-O2 - Build # 11 - Successful!

by ci_notify＠linaro.org

Successfully identified regression in *llvm* in CI configuration tcwg_bmk_llvm_tk1/llvm-master-arm-spec2k6-O2. So far, this commit has regressed CI configurations: - tcwg_bmk_llvm_tk1/llvm-master-arm-spec2k6-O2 Culprit: <cut> commit 92c1fd19abb15bc68b1127a26137a69e033cdb39 Author: Stanislav Mekhanoshin <Stanislav.Mekhanoshin(a)amd.com> Date: Thu Aug 19 11:42:09 2021 -0700 Allow rematerialization of virtual reg uses Currently isReallyTriviallyReMaterializableGeneric() implementation prevents rematerialization on any virtual register use on the grounds that is not a trivial rematerialization and that we do not want to extend liveranges. It appears that LRE logic does not attempt to extend a liverange of a source register for rematerialization so that is not an issue. That is checked in the LiveRangeEdit::allUsesAvailableAt(). The only non-trivial aspect of it is accounting for tied-defs which normally represent a read-modify-write operation and not rematerializable. The test for a tied-def situation already exists in the /CodeGen/AMDGPU/remat-vop.mir, test_no_remat_v_cvt_f32_i32_sdwa_dst_unused_preserve. The change has affected ARM/Thumb, Mips, RISCV, and x86. For the targets where I more or less understand the asm it seems to reduce spilling (as expected) or be neutral. However, it needs a review by all targets' specialists. Differential Revision: https://reviews.llvm.org/D106408 </cut> Results regressed to (for first_bad == 92c1fd19abb15bc68b1127a26137a69e033cdb39) # reset_artifacts: -10 # build_abe binutils: -9 # build_abe stage1 -- --set gcc_override_configure=--with-mode=arm --set gcc_override_configure=--disable-libsanitizer: -8 # build_abe linux: -7 # build_abe glibc: -6 # build_abe stage2 -- --set gcc_override_configure=--with-mode=arm --set gcc_override_configure=--disable-libsanitizer: -5 # build_llvm true: -3 # true: 0 # benchmark -- -O2_marm artifacts/build-92c1fd19abb15bc68b1127a26137a69e033cdb39/results_id: 1 # 456.hmmer,hmmer_base.default regressed by 103 from (for last_good == 1d02a8bcd393ea9c50f0212797059888efc78002) # reset_artifacts: -10 # build_abe binutils: -9 # build_abe stage1 -- --set gcc_override_configure=--with-mode=arm --set gcc_override_configure=--disable-libsanitizer: -8 # build_abe linux: -7 # build_abe glibc: -6 # build_abe stage2 -- --set gcc_override_configure=--with-mode=arm --set gcc_override_configure=--disable-libsanitizer: -5 # build_llvm true: -3 # true: 0 # benchmark -- -O2_marm artifacts/build-1d02a8bcd393ea9c50f0212797059888efc78002/results_id: 1 Artifacts of last_good build: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-master-… Results ID of last_good: tk1_32/tcwg_bmk_llvm_tk1/bisect-llvm-master-arm-spec2k6-O2/4381 Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-master-… Results ID of first_bad: tk1_32/tcwg_bmk_llvm_tk1/bisect-llvm-master-arm-spec2k6-O2/4378 Build top page/logs: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-master-… Configuration details: Reproduce builds: <cut> mkdir investigate-llvm-92c1fd19abb15bc68b1127a26137a69e033cdb39 cd investigate-llvm-92c1fd19abb15bc68b1127a26137a69e033cdb39 git clone https://git.linaro.org/toolchain/jenkins-scripts mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-master-… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-master-… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-master-… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_bmk-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /llvm/ ./ ./bisect/baseline/ cd llvm # Reproduce first_bad build git checkout --detach 92c1fd19abb15bc68b1127a26137a69e033cdb39 ../artifacts/test.sh # Reproduce last_good build git checkout --detach 1d02a8bcd393ea9c50f0212797059888efc78002 ../artifacts/test.sh cd .. </cut> History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/… Artifacts: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-master-… Build log: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-master-… Full commit (up to 1000 lines): <cut> commit 92c1fd19abb15bc68b1127a26137a69e033cdb39 Author: Stanislav Mekhanoshin <Stanislav.Mekhanoshin(a)amd.com> Date: Thu Aug 19 11:42:09 2021 -0700 Allow rematerialization of virtual reg uses Currently isReallyTriviallyReMaterializableGeneric() implementation prevents rematerialization on any virtual register use on the grounds that is not a trivial rematerialization and that we do not want to extend liveranges. It appears that LRE logic does not attempt to extend a liverange of a source register for rematerialization so that is not an issue. That is checked in the LiveRangeEdit::allUsesAvailableAt(). The only non-trivial aspect of it is accounting for tied-defs which normally represent a read-modify-write operation and not rematerializable. The test for a tied-def situation already exists in the /CodeGen/AMDGPU/remat-vop.mir, test_no_remat_v_cvt_f32_i32_sdwa_dst_unused_preserve. The change has affected ARM/Thumb, Mips, RISCV, and x86. For the targets where I more or less understand the asm it seems to reduce spilling (as expected) or be neutral. However, it needs a review by all targets' specialists. Differential Revision: https://reviews.llvm.org/D106408 --- llvm/include/llvm/CodeGen/TargetInstrInfo.h | 12 +- llvm/lib/CodeGen/TargetInstrInfo.cpp | 9 +- llvm/test/CodeGen/AMDGPU/remat-sop.mir | 60 + llvm/test/CodeGen/ARM/arm-shrink-wrapping-linux.ll | 28 +- llvm/test/CodeGen/ARM/funnel-shift-rot.ll | 32 +- llvm/test/CodeGen/ARM/funnel-shift.ll | 30 +- .../test/CodeGen/ARM/illegal-bitfield-loadstore.ll | 30 +- llvm/test/CodeGen/ARM/neon-copy.ll | 10 +- llvm/test/CodeGen/Mips/llvm-ir/ashr.ll | 227 +- llvm/test/CodeGen/Mips/llvm-ir/lshr.ll | 206 +- llvm/test/CodeGen/Mips/llvm-ir/shl.ll | 95 +- llvm/test/CodeGen/Mips/llvm-ir/sub.ll | 31 +- llvm/test/CodeGen/Mips/tls.ll | 4 +- llvm/test/CodeGen/RISCV/atomic-rmw.ll | 120 +- llvm/test/CodeGen/RISCV/atomic-signext.ll | 24 +- llvm/test/CodeGen/RISCV/bswap-ctlz-cttz-ctpop.ll | 96 +- llvm/test/CodeGen/RISCV/rv32i-rv64i-half.ll | 12 +- llvm/test/CodeGen/RISCV/rv32zbb-zbp.ll | 526 +-- llvm/test/CodeGen/RISCV/rv32zbb.ll | 94 +- llvm/test/CodeGen/RISCV/rv32zbp.ll | 282 +- llvm/test/CodeGen/RISCV/rv32zbt.ll | 348 +- .../CodeGen/RISCV/rvv/fixed-vectors-bitreverse.ll | 324 +- llvm/test/CodeGen/RISCV/rvv/fixed-vectors-bswap.ll | 146 +- llvm/test/CodeGen/RISCV/rvv/fixed-vectors-ctlz.ll | 3540 ++++++++++---------- llvm/test/CodeGen/RISCV/rvv/fixed-vectors-cttz.ll | 720 ++-- llvm/test/CodeGen/RISCV/srem-vector-lkk.ll | 208 +- llvm/test/CodeGen/RISCV/urem-vector-lkk.ll | 190 +- llvm/test/CodeGen/Thumb/dyn-stackalloc.ll | 7 +- .../tail-pred-disabled-in-loloops.ll | 14 +- .../LowOverheadLoops/varying-outer-2d-reduction.ll | 64 +- .../CodeGen/Thumb2/LowOverheadLoops/while-loops.ll | 67 +- llvm/test/CodeGen/Thumb2/ldr-str-imm12.ll | 30 +- llvm/test/CodeGen/Thumb2/mve-float16regloops.ll | 82 +- llvm/test/CodeGen/Thumb2/mve-float32regloops.ll | 98 +- llvm/test/CodeGen/Thumb2/mve-postinc-dct.ll | 529 ++- llvm/test/CodeGen/X86/addcarry.ll | 20 +- llvm/test/CodeGen/X86/callbr-asm-blockplacement.ll | 12 +- llvm/test/CodeGen/X86/dag-update-nodetomatch.ll | 17 +- llvm/test/CodeGen/X86/inalloca-invoke.ll | 2 +- llvm/test/CodeGen/X86/licm-regpressure.ll | 28 +- llvm/test/CodeGen/X86/ragreedy-hoist-spill.ll | 40 +- llvm/test/CodeGen/X86/sdiv_fix.ll | 5 +- 42 files changed, 4217 insertions(+), 4202 deletions(-) diff --git a/llvm/include/llvm/CodeGen/TargetInstrInfo.h b/llvm/include/llvm/CodeGen/TargetInstrInfo.h index 2f853a2c6f9f..1c05afba730d 100644 --- a/llvm/include/llvm/CodeGen/TargetInstrInfo.h +++ b/llvm/include/llvm/CodeGen/TargetInstrInfo.h @@ -117,10 +117,11 @@ public: const MachineFunction &MF) const; /// Return true if the instruction is trivially rematerializable, meaning it - /// has no side effects and requires no operands that aren't always available. - /// This means the only allowed uses are constants and unallocatable physical - /// registers so that the instructions result is independent of the place - /// in the function. + /// has no side effects. Uses of constants and unallocatable physical + /// registers are always trivial to rematerialize so that the instructions + /// result is independent of the place in the function. Uses of virtual + /// registers are allowed but it is caller's responsility to ensure these + /// operands are valid at the point the instruction is beeing moved. bool isTriviallyReMaterializable(const MachineInstr &MI, AAResults *AA = nullptr) const { return MI.getOpcode() == TargetOpcode::IMPLICIT_DEF || @@ -140,8 +141,7 @@ protected: /// set, this hook lets the target specify whether the instruction is actually /// trivially rematerializable, taking into consideration its operands. This /// predicate must return false if the instruction has any side effects other - /// than producing a value, or if it requres any address registers that are - /// not always available. + /// than producing a value. /// Requirements must be check as stated in isTriviallyReMaterializable() . virtual bool isReallyTriviallyReMaterializable(const MachineInstr &MI, AAResults *AA) const { diff --git a/llvm/lib/CodeGen/TargetInstrInfo.cpp b/llvm/lib/CodeGen/TargetInstrInfo.cpp index 1eab8e7443a7..fe7d60e0b7e2 100644 --- a/llvm/lib/CodeGen/TargetInstrInfo.cpp +++ b/llvm/lib/CodeGen/TargetInstrInfo.cpp @@ -921,7 +921,8 @@ bool TargetInstrInfo::isReallyTriviallyReMaterializableGeneric( const MachineRegisterInfo &MRI = MF.getRegInfo(); // Remat clients assume operand 0 is the defined register. - if (!MI.getNumOperands() || !MI.getOperand(0).isReg()) + if (!MI.getNumOperands() || !MI.getOperand(0).isReg() || + MI.getOperand(0).isTied()) return false; Register DefReg = MI.getOperand(0).getReg(); @@ -983,12 +984,6 @@ bool TargetInstrInfo::isReallyTriviallyReMaterializableGeneric( // same virtual register, though. if (MO.isDef() && Reg != DefReg) return false; - - // Don't allow any virtual-register uses. Rematting an instruction with - // virtual register uses would length the live ranges of the uses, which - // is not necessarily a good idea, certainly not "trivial". - if (MO.isUse()) - return false; } // Everything checked out. diff --git a/llvm/test/CodeGen/AMDGPU/remat-sop.mir b/llvm/test/CodeGen/AMDGPU/remat-sop.mir index ed799bfca028..c9915aaabfde 100644 --- a/llvm/test/CodeGen/AMDGPU/remat-sop.mir +++ b/llvm/test/CodeGen/AMDGPU/remat-sop.mir @@ -51,6 +51,66 @@ body: | S_NOP 0, implicit %2 S_ENDPGM 0 ... +# The liverange of %0 covers a point of rematerialization, source value is +# availabe. +--- +name: test_remat_s_mov_b32_vreg_src_long_lr +tracksRegLiveness: true +machineFunctionInfo: + stackPtrOffsetReg: $sgpr32 +body: | + bb.0: + ; GCN-LABEL: name: test_remat_s_mov_b32_vreg_src_long_lr + ; GCN: renamable $sgpr0 = IMPLICIT_DEF + ; GCN: renamable $sgpr1 = S_MOV_B32 renamable $sgpr0 + ; GCN: S_NOP 0, implicit killed renamable $sgpr1 + ; GCN: renamable $sgpr1 = S_MOV_B32 renamable $sgpr0 + ; GCN: S_NOP 0, implicit killed renamable $sgpr1 + ; GCN: renamable $sgpr1 = S_MOV_B32 renamable $sgpr0 + ; GCN: S_NOP 0, implicit killed renamable $sgpr1 + ; GCN: S_NOP 0, implicit killed renamable $sgpr0 + ; GCN: S_ENDPGM 0 + %0:sreg_32 = IMPLICIT_DEF + %1:sreg_32 = S_MOV_B32 %0:sreg_32 + %2:sreg_32 = S_MOV_B32 %0:sreg_32 + %3:sreg_32 = S_MOV_B32 %0:sreg_32 + S_NOP 0, implicit %1 + S_NOP 0, implicit %2 + S_NOP 0, implicit %3 + S_NOP 0, implicit %0 + S_ENDPGM 0 +... +# The liverange of %0 does not cover a point of rematerialization, source value is +# unavailabe and we do not want to artificially extend the liverange. +--- +name: test_no_remat_s_mov_b32_vreg_src_short_lr +tracksRegLiveness: true +machineFunctionInfo: + stackPtrOffsetReg: $sgpr32 +body: | + bb.0: + ; GCN-LABEL: name: test_no_remat_s_mov_b32_vreg_src_short_lr + ; GCN: renamable $sgpr0 = IMPLICIT_DEF + ; GCN: renamable $sgpr1 = S_MOV_B32 renamable $sgpr0 + ; GCN: SI_SPILL_S32_SAVE killed renamable $sgpr1, %stack.1, implicit $exec, implicit $sgpr32 :: (store (s32) into %stack.1, addrspace 5) + ; GCN: renamable $sgpr1 = S_MOV_B32 renamable $sgpr0 + ; GCN: SI_SPILL_S32_SAVE killed renamable $sgpr1, %stack.0, implicit $exec, implicit $sgpr32 :: (store (s32) into %stack.0, addrspace 5) + ; GCN: renamable $sgpr0 = S_MOV_B32 killed renamable $sgpr0 + ; GCN: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.1, addrspace 5) + ; GCN: S_NOP 0, implicit killed renamable $sgpr1 + ; GCN: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.0, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.0, addrspace 5) + ; GCN: S_NOP 0, implicit killed renamable $sgpr1 + ; GCN: S_NOP 0, implicit killed renamable $sgpr0 + ; GCN: S_ENDPGM 0 + %0:sreg_32 = IMPLICIT_DEF + %1:sreg_32 = S_MOV_B32 %0:sreg_32 + %2:sreg_32 = S_MOV_B32 %0:sreg_32 + %3:sreg_32 = S_MOV_B32 %0:sreg_32 + S_NOP 0, implicit %1 + S_NOP 0, implicit %2 + S_NOP 0, implicit %3 + S_ENDPGM 0 +... --- name: test_remat_s_mov_b64 tracksRegLiveness: true diff --git a/llvm/test/CodeGen/ARM/arm-shrink-wrapping-linux.ll b/llvm/test/CodeGen/ARM/arm-shrink-wrapping-linux.ll index a4243276c70a..175a2069a441 100644 --- a/llvm/test/CodeGen/ARM/arm-shrink-wrapping-linux.ll +++ b/llvm/test/CodeGen/ARM/arm-shrink-wrapping-linux.ll @@ -29,20 +29,20 @@ define fastcc i8* @wrongUseOfPostDominate(i8* readonly %s, i32 %off, i8* readnon ; ENABLE-NEXT: pophs {r11, pc} ; ENABLE-NEXT: .LBB0_3: @ %while.body.preheader ; ENABLE-NEXT: movw r12, :lower16:skip -; ENABLE-NEXT: sub r1, r1, #1 +; ENABLE-NEXT: sub r3, r1, #1 ; ENABLE-NEXT: movt r12, :upper16:skip ; ENABLE-NEXT: .LBB0_4: @ %while.body ; ENABLE-NEXT: @ =>This Inner Loop Header: Depth=1 -; ENABLE-NEXT: ldrb r3, [r0] -; ENABLE-NEXT: ldrb r3, [r12, r3] -; ENABLE-NEXT: add r0, r0, r3 -; ENABLE-NEXT: sub r3, r1, #1 -; ENABLE-NEXT: cmp r3, r1 +; ENABLE-NEXT: ldrb r1, [r0] +; ENABLE-NEXT: ldrb r1, [r12, r1] +; ENABLE-NEXT: add r0, r0, r1 +; ENABLE-NEXT: sub r1, r3, #1 +; ENABLE-NEXT: cmp r1, r3 ; ENABLE-NEXT: bhs .LBB0_6 ; ENABLE-NEXT: @ %bb.5: @ %while.body ; ENABLE-NEXT: @ in Loop: Header=BB0_4 Depth=1 ; ENABLE-NEXT: cmp r0, r2 -; ENABLE-NEXT: mov r1, r3 +; ENABLE-NEXT: mov r3, r1 ; ENABLE-NEXT: blo .LBB0_4 ; ENABLE-NEXT: .LBB0_6: @ %if.end29 ; ENABLE-NEXT: pop {r11, pc} @@ -119,20 +119,20 @@ define fastcc i8* @wrongUseOfPostDominate(i8* readonly %s, i32 %off, i8* readnon ; DISABLE-NEXT: pophs {r11, pc} ; DISABLE-NEXT: .LBB0_3: @ %while.body.preheader ; DISABLE-NEXT: movw r12, :lower16:skip -; DISABLE-NEXT: sub r1, r1, #1 +; DISABLE-NEXT: sub r3, r1, #1 ; DISABLE-NEXT: movt r12, :upper16:skip ; DISABLE-NEXT: .LBB0_4: @ %while.body ; DISABLE-NEXT: @ =>This Inner Loop Header: Depth=1 -; DISABLE-NEXT: ldrb r3, [r0] -; DISABLE-NEXT: ldrb r3, [r12, r3] -; DISABLE-NEXT: add r0, r0, r3 -; DISABLE-NEXT: sub r3, r1, #1 -; DISABLE-NEXT: cmp r3, r1 +; DISABLE-NEXT: ldrb r1, [r0] +; DISABLE-NEXT: ldrb r1, [r12, r1] +; DISABLE-NEXT: add r0, r0, r1 +; DISABLE-NEXT: sub r1, r3, #1 +; DISABLE-NEXT: cmp r1, r3 ; DISABLE-NEXT: bhs .LBB0_6 ; DISABLE-NEXT: @ %bb.5: @ %while.body ; DISABLE-NEXT: @ in Loop: Header=BB0_4 Depth=1 ; DISABLE-NEXT: cmp r0, r2 -; DISABLE-NEXT: mov r1, r3 +; DISABLE-NEXT: mov r3, r1 ; DISABLE-NEXT: blo .LBB0_4 ; DISABLE-NEXT: .LBB0_6: @ %if.end29 ; DISABLE-NEXT: pop {r11, pc} diff --git a/llvm/test/CodeGen/ARM/funnel-shift-rot.ll b/llvm/test/CodeGen/ARM/funnel-shift-rot.ll index 55157875d355..ea15fcc5c824 100644 --- a/llvm/test/CodeGen/ARM/funnel-shift-rot.ll +++ b/llvm/test/CodeGen/ARM/funnel-shift-rot.ll @@ -73,13 +73,13 @@ define i64 @rotl_i64(i64 %x, i64 %z) { ; SCALAR-NEXT: push {r4, r5, r11, lr} ; SCALAR-NEXT: rsb r3, r2, #0 ; SCALAR-NEXT: and r4, r2, #63 -; SCALAR-NEXT: and lr, r3, #63 -; SCALAR-NEXT: rsb r3, lr, #32 +; SCALAR-NEXT: and r12, r3, #63 +; SCALAR-NEXT: rsb r3, r12, #32 ; SCALAR-NEXT: lsl r2, r0, r4 -; SCALAR-NEXT: lsr r12, r0, lr -; SCALAR-NEXT: orr r3, r12, r1, lsl r3 -; SCALAR-NEXT: subs r12, lr, #32 -; SCALAR-NEXT: lsrpl r3, r1, r12 +; SCALAR-NEXT: lsr lr, r0, r12 +; SCALAR-NEXT: orr r3, lr, r1, lsl r3 +; SCALAR-NEXT: subs lr, r12, #32 +; SCALAR-NEXT: lsrpl r3, r1, lr ; SCALAR-NEXT: subs r5, r4, #32 ; SCALAR-NEXT: movwpl r2, #0 ; SCALAR-NEXT: cmp r5, #0 @@ -88,8 +88,8 @@ define i64 @rotl_i64(i64 %x, i64 %z) { ; SCALAR-NEXT: lsr r3, r0, r3 ; SCALAR-NEXT: orr r3, r3, r1, lsl r4 ; SCALAR-NEXT: lslpl r3, r0, r5 -; SCALAR-NEXT: lsr r0, r1, lr -; SCALAR-NEXT: cmp r12, #0 +; SCALAR-NEXT: lsr r0, r1, r12 +; SCALAR-NEXT: cmp lr, #0 ; SCALAR-NEXT: movwpl r0, #0 ; SCALAR-NEXT: orr r1, r3, r0 ; SCALAR-NEXT: mov r0, r2 @@ -245,15 +245,15 @@ define i64 @rotr_i64(i64 %x, i64 %z) { ; CHECK: @ %bb.0: ; CHECK-NEXT: .save {r4, r5, r11, lr} ; CHECK-NEXT: push {r4, r5, r11, lr} -; CHECK-NEXT: and lr, r2, #63 +; CHECK-NEXT: and r12, r2, #63 ; CHECK-NEXT: rsb r2, r2, #0 -; CHECK-NEXT: rsb r3, lr, #32 +; CHECK-NEXT: rsb r3, r12, #32 ; CHECK-NEXT: and r4, r2, #63 -; CHECK-NEXT: lsr r12, r0, lr -; CHECK-NEXT: orr r3, r12, r1, lsl r3 -; CHECK-NEXT: subs r12, lr, #32 +; CHECK-NEXT: lsr lr, r0, r12 +; CHECK-NEXT: orr r3, lr, r1, lsl r3 +; CHECK-NEXT: subs lr, r12, #32 ; CHECK-NEXT: lsl r2, r0, r4 -; CHECK-NEXT: lsrpl r3, r1, r12 +; CHECK-NEXT: lsrpl r3, r1, lr ; CHECK-NEXT: subs r5, r4, #32 ; CHECK-NEXT: movwpl r2, #0 ; CHECK-NEXT: cmp r5, #0 @@ -262,8 +262,8 @@ define i64 @rotr_i64(i64 %x, i64 %z) { ; CHECK-NEXT: lsr r3, r0, r3 ; CHECK-NEXT: orr r3, r3, r1, lsl r4 ; CHECK-NEXT: lslpl r3, r0, r5 -; CHECK-NEXT: lsr r0, r1, lr -; CHECK-NEXT: cmp r12, #0 +; CHECK-NEXT: lsr r0, r1, r12 +; CHECK-NEXT: cmp lr, #0 ; CHECK-NEXT: movwpl r0, #0 ; CHECK-NEXT: orr r1, r0, r3 ; CHECK-NEXT: mov r0, r2 diff --git a/llvm/test/CodeGen/ARM/funnel-shift.ll b/llvm/test/CodeGen/ARM/funnel-shift.ll index 54c93b493c98..6372f9be2ca3 100644 --- a/llvm/test/CodeGen/ARM/funnel-shift.ll +++ b/llvm/test/CodeGen/ARM/funnel-shift.ll @@ -224,31 +224,31 @@ define i37 @fshr_i37(i37 %x, i37 %y, i37 %z) { ; CHECK-NEXT: mov r3, #0 ; CHECK-NEXT: bl __aeabi_uldivmod ; CHECK-NEXT: add r0, r2, #27 -; CHECK-NEXT: lsl r6, r6, #27 -; CHECK-NEXT: and r1, r0, #63 ; CHECK-NEXT: lsl r2, r7, #27 +; CHECK-NEXT: and r12, r0, #63 +; CHECK-NEXT: lsl r6, r6, #27 ; CHECK-NEXT: orr r7, r6, r7, lsr #5 +; CHECK-NEXT: rsb r3, r12, #32 +; CHECK-NEXT: lsr r2, r2, r12 ; CHECK-NEXT: mov r6, #63 -; CHECK-NEXT: rsb r3, r1, #32 -; CHECK-NEXT: lsr r2, r2, r1 -; CHECK-NEXT: subs r12, r1, #32 -; CHECK-NEXT: bic r6, r6, r0 ; CHECK-NEXT: orr r2, r2, r7, lsl r3 +; CHECK-NEXT: subs r3, r12, #32 +; CHECK-NEXT: bic r6, r6, r0 ; CHECK-NEXT: lsl r5, r9, #1 -; CHECK-NEXT: lsrpl r2, r7, r12 +; CHECK-NEXT: lsrpl r2, r7, r3 +; CHECK-NEXT: subs r1, r6, #32 ; CHECK-NEXT: lsl r0, r5, r6 -; CHECK-NEXT: subs r4, r6, #32 -; CHECK-NEXT: lsl r3, r8, #1 +; CHECK-NEXT: lsl r4, r8, #1 ; CHECK-NEXT: movwpl r0, #0 -; CHECK-NEXT: orr r3, r3, r9, lsr #31 +; CHECK-NEXT: orr r4, r4, r9, lsr #31 ; CHECK-NEXT: orr r0, r0, r2 ; CHECK-NEXT: rsb r2, r6, #32 -; CHECK-NEXT: cmp r4, #0 -; CHECK-NEXT: lsr r1, r7, r1 +; CHECK-NEXT: cmp r1, #0 ; CHECK-NEXT: lsr r2, r5, r2 -; CHECK-NEXT: orr r2, r2, r3, lsl r6 -; CHECK-NEXT: lslpl r2, r5, r4 -; CHECK-NEXT: cmp r12, #0 +; CHECK-NEXT: orr r2, r2, r4, lsl r6 +; CHECK-NEXT: lslpl r2, r5, r1 +; CHECK-NEXT: lsr r1, r7, r12 +; CHECK-NEXT: cmp r3, #0 ; CHECK-NEXT: movwpl r1, #0 ; CHECK-NEXT: orr r1, r2, r1 ; CHECK-NEXT: pop {r4, r5, r6, r7, r8, r9, r11, pc} diff --git a/llvm/test/CodeGen/ARM/illegal-bitfield-loadstore.ll b/llvm/test/CodeGen/ARM/illegal-bitfield-loadstore.ll index 2922e0ed5423..0a0bb62b0a09 100644 --- a/llvm/test/CodeGen/ARM/illegal-bitfield-loadstore.ll +++ b/llvm/test/CodeGen/ARM/illegal-bitfield-loadstore.ll @@ -91,17 +91,17 @@ define void @i56_or(i56* %a) { ; BE-LABEL: i56_or: ; BE: @ %bb.0: ; BE-NEXT: mov r1, r0 -; BE-NEXT: ldr r12, [r0] ; BE-NEXT: ldrh r2, [r1, #4]! ; BE-NEXT: ldrb r3, [r1, #2] ; BE-NEXT: orr r2, r3, r2, lsl #8 -; BE-NEXT: orr r2, r2, r12, lsl #24 -; BE-NEXT: orr r2, r2, #384 -; BE-NEXT: strb r2, [r1, #2] -; BE-NEXT: lsr r3, r2, #8 -; BE-NEXT: strh r3, [r1] -; BE-NEXT: bic r1, r12, #255 -; BE-NEXT: orr r1, r1, r2, lsr #24 +; BE-NEXT: ldr r3, [r0] +; BE-NEXT: orr r2, r2, r3, lsl #24 +; BE-NEXT: orr r12, r2, #384 +; BE-NEXT: strb r12, [r1, #2] +; BE-NEXT: lsr r2, r12, #8 +; BE-NEXT: strh r2, [r1] +; BE-NEXT: bic r1, r3, #255 +; BE-NEXT: orr r1, r1, r12, lsr #24 ; BE-NEXT: str r1, [r0] ; BE-NEXT: mov pc, lr %aa = load i56, i56* %a @@ -127,13 +127,13 @@ define void @i56_and_or(i56* %a) { ; BE-NEXT: ldrb r3, [r1, #2] ; BE-NEXT: strb r2, [r1, #2] ; BE-NEXT: orr r2, r3, r12, lsl #8 -; BE-NEXT: ldr r12, [r0] -; BE-NEXT: orr r2, r2, r12, lsl #24 -; BE-NEXT: orr r2, r2, #384 -; BE-NEXT: lsr r3, r2, #8 -; BE-NEXT: strh r3, [r1] -; BE-NEXT: bic r1, r12, #255 -; BE-NEXT: orr r1, r1, r2, lsr #24 +; BE-NEXT: ldr r3, [r0] +; BE-NEXT: orr r2, r2, r3, lsl #24 +; BE-NEXT: orr r12, r2, #384 +; BE-NEXT: lsr r2, r12, #8 +; BE-NEXT: strh r2, [r1] +; BE-NEXT: bic r1, r3, #255 +; BE-NEXT: orr r1, r1, r12, lsr #24 ; BE-NEXT: str r1, [r0] ; BE-NEXT: mov pc, lr diff --git a/llvm/test/CodeGen/ARM/neon-copy.ll b/llvm/test/CodeGen/ARM/neon-copy.ll index 09a991da2e59..46490efb6631 100644 --- a/llvm/test/CodeGen/ARM/neon-copy.ll +++ b/llvm/test/CodeGen/ARM/neon-copy.ll @@ -1340,16 +1340,16 @@ define <4 x i16> @test_extracts_inserts_varidx_insert(<8 x i16> %x, i32 %idx) { ; CHECK-NEXT: .pad #8 ; CHECK-NEXT: sub sp, sp, #8 ; CHECK-NEXT: vmov.u16 r1, d0[1] -; CHECK-NEXT: and r0, r0, #3 +; CHECK-NEXT: and r12, r0, #3 ; CHECK-NEXT: vmov.u16 r2, d0[2] -; CHECK-NEXT: mov r3, sp -; CHECK-NEXT: vmov.u16 r12, d0[3] -; CHECK-NEXT: orr r0, r3, r0, lsl #1 +; CHECK-NEXT: mov r0, sp +; CHECK-NEXT: vmov.u16 r3, d0[3] +; CHECK-NEXT: orr r0, r0, r12, lsl #1 ; CHECK-NEXT: vst1.16 {d0[0]}, [r0:16] ; CHECK-NEXT: vldr d0, [sp] ; CHECK-NEXT: vmov.16 d0[1], r1 ; CHECK-NEXT: vmov.16 d0[2], r2 -; CHECK-NEXT: vmov.16 d0[3], r12 +; CHECK-NEXT: vmov.16 d0[3], r3 ; CHECK-NEXT: add sp, sp, #8 ; CHECK-NEXT: bx lr %tmp = extractelement <8 x i16> %x, i32 0 diff --git a/llvm/test/CodeGen/Mips/llvm-ir/ashr.ll b/llvm/test/CodeGen/Mips/llvm-ir/ashr.ll index 8be7100d368b..a125446b27c3 100644 --- a/llvm/test/CodeGen/Mips/llvm-ir/ashr.ll +++ b/llvm/test/CodeGen/Mips/llvm-ir/ashr.ll @@ -766,79 +766,85 @@ define signext i128 @ashr_i128(i128 signext %a, i128 signext %b) { ; MMR3-NEXT: .cfi_offset 17, -4 ; MMR3-NEXT: .cfi_offset 16, -8 ; MMR3-NEXT: move $8, $7 -; MMR3-NEXT: sw $6, 32($sp) # 4-byte Folded Spill -; MMR3-NEXT: sw $5, 36($sp) # 4-byte Folded Spill -; MMR3-NEXT: sw $4, 8($sp) # 4-byte Folded Spill +; MMR3-NEXT: move $2, $6 +; MMR3-NEXT: sw $5, 0($sp) # 4-byte Folded Spill +; MMR3-NEXT: sw $4, 12($sp) # 4-byte Folded Spill ; MMR3-NEXT: lw $16, 76($sp) -; MMR3-NEXT: srlv $4, $7, $16 -; MMR3-NEXT: not16 $3, $16 -; MMR3-NEXT: sw $3, 24($sp) # 4-byte Folded Spill -; MMR3-NEXT: sll16 $2, $6, 1 -; MMR3-NEXT: sllv $3, $2, $3 -; MMR3-NEXT: li16 $2, 64 -; MMR3-NEXT: or16 $3, $4 -; MMR3-NEXT: srlv $6, $6, $16 -; MMR3-NEXT: sw $6, 12($sp) # 4-byte Folded Spill -; MMR3-NEXT: subu16 $7, $2, $16 +; MMR3-NEXT: srlv $3, $7, $16 +; MMR3-NEXT: not16 $6, $16 +; MMR3-NEXT: sw $6, 24($sp) # 4-byte Folded Spill +; MMR3-NEXT: move $4, $2 +; MMR3-NEXT: sw $2, 32($sp) # 4-byte Folded Spill +; MMR3-NEXT: sll16 $2, $2, 1 +; MMR3-NEXT: sllv $2, $2, $6 +; MMR3-NEXT: li16 $6, 64 +; MMR3-NEXT: or16 $2, $3 +; MMR3-NEXT: srlv $4, $4, $16 +; MMR3-NEXT: sw $4, 16($sp) # 4-byte Folded Spill +; MMR3-NEXT: subu16 $7, $6, $16 ; MMR3-NEXT: sllv $9, $5, $7 -; MMR3-NEXT: andi16 $2, $7, 32 -; MMR3-NEXT: sw $2, 28($sp) # 4-byte Folded Spill -; MMR3-NEXT: andi16 $5, $16, 32 -; MMR3-NEXT: sw $5, 16($sp) # 4-byte Folded Spill -; MMR3-NEXT: move $4, $9 +; MMR3-NEXT: andi16 $5, $7, 32 +; MMR3-NEXT: sw $5, 28($sp) # 4-byte Folded Spill +; MMR3-NEXT: andi16 $6, $16, 32 +; MMR3-NEXT: sw $6, 36($sp) # 4-byte Folded Spill +; MMR3-NEXT: move $3, $9 ; MMR3-NEXT: li16 $17, 0 -; MMR3-NEXT: movn $4, $17, $2 -; MMR3-NEXT: movn $3, $6, $5 -; MMR3-NEXT: addiu $2, $16, -64 -; MMR3-NEXT: lw $5, 36($sp) # 4-byte Folded Reload -; MMR3-NEXT: srlv $5, $5, $2 -; MMR3-NEXT: sw $5, 20($sp) # 4-byte Folded Spill -; MMR3-NEXT: lw $17, 8($sp) # 4-byte Folded Reload -; MMR3-NEXT: sll16 $6, $17, 1 -; MMR3-NEXT: sw $6, 4($sp) # 4-byte Folded Spill -; MMR3-NEXT: not16 $5, $2 -; MMR3-NEXT: sllv $5, $6, $5 -; MMR3-NEXT: or16 $3, $4 -; MMR3-NEXT: lw $4, 20($sp) # 4-byte Folded Reload -; MMR3-NEXT: or16 $5, $4 -; MMR3-NEXT: srav $1, $17, $2 -; MMR3-NEXT: andi16 $2, $2, 32 -; MMR3-NEXT: sw $2, 20($sp) # 4-byte Folded Spill -; MMR3-NEXT: movn $5, $1, $2 -; MMR3-NEXT: sllv $2, $17, $7 -; MMR3-NEXT: not16 $4, $7 -; MMR3-NEXT: lw $7, 36($sp) # 4-byte Folded Reload -; MMR3-NEXT: srl16 $6, $7, 1 -; MMR3-NEXT: srlv $6, $6, $4 +; MMR3-NEXT: movn $3, $17, $5 +; MMR3-NEXT: movn $2, $4, $6 +; MMR3-NEXT: addiu $4, $16, -64 +; MMR3-NEXT: lw $17, 0($sp) # 4-byte Folded Reload +; MMR3-NEXT: srlv $4, $17, $4 +; MMR3-NEXT: sw $4, 20($sp) # 4-byte Folded Spill +; MMR3-NEXT: lw $6, 12($sp) # 4-byte Folded Reload +; MMR3-NEXT: sll16 $4, $6, 1 +; MMR3-NEXT: sw $4, 8($sp) # 4-byte Folded Spill +; MMR3-NEXT: addiu $5, $16, -64 +; MMR3-NEXT: not16 $5, $5 +; MMR3-NEXT: sllv $5, $4, $5 +; MMR3-NEXT: or16 $2, $3 +; MMR3-NEXT: lw $3, 20($sp) # 4-byte Folded Reload +; MMR3-NEXT: or16 $5, $3 +; MMR3-NEXT: addiu $3, $16, -64 +; MMR3-NEXT: srav $1, $6, $3 +; MMR3-NEXT: andi16 $3, $3, 32 +; MMR3-NEXT: sw $3, 20($sp) # 4-byte Folded Spill +; MMR3-NEXT: movn $5, $1, $3 +; MMR3-NEXT: sllv $3, $6, $7 +; MMR3-NEXT: sw $3, 4($sp) # 4-byte Folded Spill +; MMR3-NEXT: not16 $3, $7 +; MMR3-NEXT: srl16 $4, $17, 1 +; MMR3-NEXT: srlv $3, $4, $3 ; MMR3-NEXT: sltiu $10, $16, 64 -; MMR3-NEXT: movn $5, $3, $10 -; MMR3-NEXT: or16 $6, $2 -; MMR3-NEXT: srlv $2, $7, $16 -; MMR3-NEXT: lw $3, 24($sp) # 4-byte Folded Reload -; MMR3-NEXT: lw $4, 4($sp) # 4-byte Folded Reload -; MMR3-NEXT: sllv $3, $4, $3 +; MMR3-NEXT: movn $5, $2, $10 +; MMR3-NEXT: lw $2, 4($sp) # 4-byte Folded Reload ; MMR3-NEXT: or16 $3, $2 -; MMR3-NEXT: srav $11, $17, $16 -; MMR3-NEXT: lw $4, 16($sp) # 4-byte Folded Reload -; MMR3-NEXT: movn $3, $11, $4 -; MMR3-NEXT: sra $2, $17, 31 +; MMR3-NEXT: srlv $2, $17, $16 +; MMR3-NEXT: lw $4, 24($sp) # 4-byte Folded Reload +; MMR3-NEXT: lw $7, 8($sp) # 4-byte Folded Reload +; MMR3-NEXT: sllv $17, $7, $4 +; MMR3-NEXT: or16 $17, $2 +; MMR3-NEXT: srav $11, $6, $16 +; MMR3-NEXT: lw $2, 36($sp) # 4-byte Folded Reload +; MMR3-NEXT: movn $17, $11, $2 +; MMR3-NEXT: sra $2, $6, 31 ; MMR3-NEXT: movz $5, $8, $16 -; MMR3-NEXT: move $8, $2 -; MMR3-NEXT: movn $8, $3, $10 -; MMR3-NEXT: lw $3, 28($sp) # 4-byte Folded Reload -; MMR3-NEXT: movn $6, $9, $3 -; MMR3-NEXT: li16 $3, 0 -; MMR3-NEXT: lw $7, 12($sp) # 4-byte Folded Reload -; MMR3-NEXT: movn $7, $3, $4 -; MMR3-NEXT: or16 $7, $6 +; MMR3-NEXT: move $4, $2 +; MMR3-NEXT: movn $4, $17, $10 +; MMR3-NEXT: lw $6, 28($sp) # 4-byte Folded Reload +; MMR3-NEXT: movn $3, $9, $6 +; MMR3-NEXT: lw $6, 36($sp) # 4-byte Folded Reload +; MMR3-NEXT: li16 $17, 0 +; MMR3-NEXT: lw $7, 16($sp) # 4-byte Folded Reload +; MMR3-NEXT: movn $7, $17, $6 +; MMR3-NEXT: or16 $7, $3 ; MMR3-NEXT: lw $3, 20($sp) # 4-byte Folded Reload ; MMR3-NEXT: movn $1, $2, $3 ; MMR3-NEXT: movn $1, $7, $10 ; MMR3-NEXT: lw $3, 32($sp) # 4-byte Folded Reload ; MMR3-NEXT: movz $1, $3, $16 -; MMR3-NEXT: movn $11, $2, $4 +; MMR3-NEXT: movn $11, $2, $6 ; MMR3-NEXT: movn $2, $11, $10 -; MMR3-NEXT: move $3, $8 +; MMR3-NEXT: move $3, $4 ; MMR3-NEXT: move $4, $1 ; MMR3-NEXT: lwp $16, 40($sp) ; MMR3-NEXT: addiusp 48 @@ -852,79 +858,80 @@ define signext i128 @ashr_i128(i128 signext %a, i128 signext %b) { ; MMR6-NEXT: sw $16, 8($sp) # 4-byte Folded Spill ; MMR6-NEXT: .cfi_offset 17, -4 ; MMR6-NEXT: .cfi_offset 16, -8 -; MMR6-NEXT: move $1, $7 +; MMR6-NEXT: move $12, $7 ; MMR6-NEXT: lw $3, 44($sp) ; MMR6-NEXT: li16 $2, 64 -; MMR6-NEXT: subu16 $7, $2, $3 -; MMR6-NEXT: sllv $8, $5, $7 -; MMR6-NEXT: andi16 $2, $7, 32 -; MMR6-NEXT: selnez $9, $8, $2 -; MMR6-NEXT: sllv $10, $4, $7 -; MMR6-NEXT: not16 $7, $7 -; MMR6-NEXT: srl16 $16, $5, 1 -; MMR6-NEXT: srlv $7, $16, $7 -; MMR6-NEXT: or $7, $10, $7 -; MMR6-NEXT: seleqz $7, $7, $2 -; MMR6-NEXT: or $7, $9, $7 -; MMR6-NEXT: srlv $9, $1, $3 -; MMR6-NEXT: not16 $16, $3 -; MMR6-NEXT: sw $16, 4($sp) # 4-byte Folded Spill +; MMR6-NEXT: subu16 $16, $2, $3 +; MMR6-NEXT: sllv $1, $5, $16 +; MMR6-NEXT: andi16 $2, $16, 32 +; MMR6-NEXT: selnez $8, $1, $2 +; MMR6-NEXT: sllv $9, $4, $16 +; MMR6-NEXT: not16 $16, $16 +; MMR6-NEXT: srl16 $17, $5, 1 +; MMR6-NEXT: srlv $10, $17, $16 +; MMR6-NEXT: or $9, $9, $10 +; MMR6-NEXT: seleqz $9, $9, $2 +; MMR6-NEXT: or $8, $8, $9 +; MMR6-NEXT: srlv $9, $7, $3 +; MMR6-NEXT: not16 $7, $3 +; MMR6-NEXT: sw $7, 4($sp) # 4-byte Folded Spill ; MMR6-NEXT: sll16 $17, $6, 1 -; MMR6-NEXT: sllv $10, $17, $16 +; MMR6-NEXT: sllv $10, $17, $7 ; MMR6-NEXT: or $9, $10, $9 ; MMR6-NEXT: andi16 $17, $3, 32 ; MMR6-NEXT: seleqz $9, $9, $17 ; MMR6-NEXT: srlv $10, $6, $3 ; MMR6-NEXT: selnez $11, $10, $17 ; MMR6-NEXT: seleqz $10, $10, $17 -; MMR6-NEXT: or $10, $10, $7 -; MMR6-NEXT: seleqz $12, $8, $2 -; MMR6-NEXT: or $8, $11, $9 +; MMR6-NEXT: or $8, $10, $8 +; MMR6-NEXT: seleqz $1, $1, $2 +; MMR6-NEXT: or $9, $11, $9 ; MMR6-NEXT: addiu $2, $3, -64 -; MMR6-NEXT: srlv $9, $5, $2 +; MMR6-NEXT: srlv $10, $5, $2 ; MMR6-NEXT: sll16 $7, $4, 1 ; MMR6-NEXT: not16 $16, $2 ; MMR6-NEXT: sllv $11, $7, $16 ; MMR6-NEXT: sltiu $13, $3, 64 -; MMR6-NEXT: or $8, $8, $12 -; MMR6-NEXT: selnez $10, $10, $13 -; MMR6-NEXT: or $9, $11, $9 -; MMR6-NEXT: srav $11, $4, $2 +; MMR6-NEXT: or $1, $9, $1 +; MMR6-NEXT: selnez $8, $8, $13 +; MMR6-NEXT: or $9, $11, $10 +; MMR6-NEXT: srav $10, $4, $2 ; MMR6-NEXT: andi16 $2, $2, 32 -; MMR6-NEXT: seleqz $12, $11, $2 +; MMR6-NEXT: seleqz $11, $10, $2 ; MMR6-NEXT: sra $14, $4, 31 ; MMR6-NEXT: selnez $15, $14, $2 ; MMR6-NEXT: seleqz $9, $9, $2 -; MMR6-NEXT: or $12, $15, $12 -; MMR6-NEXT: seleqz $12, $12, $13 -; MMR6-NEXT: selnez $2, $11, $2 -; MMR6-NEXT: seleqz $11, $14, $13 -; MMR6-NEXT: or $10, $10, $12 -; MMR6-NEXT: selnez $10, $10, $3 -; MMR6-NEXT: selnez $8, $8, $13 +; MMR6-NEXT: or $11, $15, $11 +; MMR6-NEXT: seleqz $11, $11, $13 +; MMR6-NEXT: selnez $2, $10, $2 +; MMR6-NEXT: seleqz $10, $14, $13 +; MMR6-NEXT: or $8, $8, $11 +; MMR6-NEXT: selnez $8, $8, $3 +; MMR6-NEXT: selnez $1, $1, $13 ; MMR6-NEXT: or $2, $2, $9 ; MMR6-NEXT: srav $9, $4, $3 ; MMR6-NEXT: seleqz $4, $9, $17 -; MMR6-NEXT: selnez $12, $14, $17 -; MMR6-NEXT: or $4, $12, $4 -; MMR6-NEXT: selnez $12, $4, $13 +; MMR6-NEXT: selnez $11, $14, $17 +; MMR6-NEXT: or $4, $11, $4 +; MMR6-NEXT: selnez $11, $4, $13 ; MMR6-NEXT: seleqz $2, $2, $13 ; MMR6-NEXT: seleqz $4, $6, $3 -; MMR6-NEXT: seleqz $1, $1, $3 -; MMR6-NEXT: or $2, $8, $2 -; MMR6-NEXT: selnez $2, $2, $3 +; MMR6-NEXT: seleqz $6, $12, $3 ; MMR6-NEXT: or $1, $1, $2 -; MMR6-NEXT: or $4, $4, $10 -; MMR6-NEXT: or $2, $12, $11 -; MMR6-NEXT: srlv $3, $5, $3 -; MMR6-NEXT: lw $5, 4($sp) # 4-byte Folded Reload -; MMR6-NEXT: sllv $5, $7, $5 -; MMR6-NEXT: or $3, $5, $3 -; MMR6-NEXT: seleqz $3, $3, $17 -; MMR6-NEXT: selnez $5, $9, $17 -; MMR6-NEXT: or $3, $5, $3 -; MMR6-NEXT: selnez $3, $3, $13 -; MMR6-NEXT: or $3, $3, $11 +; MMR6-NEXT: selnez $1, $1, $3 +; MMR6-NEXT: or $1, $6, $1 +; MMR6-NEXT: or $4, $4, $8 +; MMR6-NEXT: or $6, $11, $10 +; MMR6-NEXT: srlv $2, $5, $3 +; MMR6-NEXT: lw $3, 4($sp) # 4-byte Folded Reload +; MMR6-NEXT: sllv $3, $7, $3 +; MMR6-NEXT: or $2, $3, $2 +; MMR6-NEXT: seleqz $2, $2, $17 +; MMR6-NEXT: selnez $3, $9, $17 +; MMR6-NEXT: or $2, $3, $2 +; MMR6-NEXT: selnez $2, $2, $13 +; MMR6-NEXT: or $3, $2, $10 +; MMR6-NEXT: move $2, $6 ; MMR6-NEXT: move $5, $1 ; MMR6-NEXT: lw $16, 8($sp) # 4-byte Folded Reload ; MMR6-NEXT: lw $17, 12($sp) # 4-byte Folded Reload diff --git a/llvm/test/CodeGen/Mips/llvm-ir/lshr.ll b/llvm/test/CodeGen/Mips/llvm-ir/lshr.ll index ed2bfc9fcf60..e4b4b3ae1d0f 100644 --- a/llvm/test/CodeGen/Mips/llvm-ir/lshr.ll +++ b/llvm/test/CodeGen/Mips/llvm-ir/lshr.ll @@ -776,76 +776,77 @@ define signext i128 @lshr_i128(i128 signext %a, i128 signext %b) { ; MMR3-NEXT: .cfi_offset 17, -4 ; MMR3-NEXT: .cfi_offset 16, -8 ; MMR3-NEXT: move $8, $7 -; MMR3-NEXT: sw $6, 24($sp) # 4-byte Folded Spill +; MMR3-NEXT: sw $5, 4($sp) # 4-byte Folded Spill ; MMR3-NEXT: sw $4, 28($sp) # 4-byte Folded Spill ; MMR3-NEXT: lw $16, 68($sp) ; MMR3-NEXT: li16 $2, 64 -; MMR3-NEXT: subu16 $7, $2, $16 -; MMR3-NEXT: sllv $9, $5, $7 -; MMR3-NEXT: move $17, $5 -; MMR3-NEXT: sw $5, 0($sp) # 4-byte Folded Spill -; MMR3-NEXT: andi16 $3, $7, 32 +; MMR3-NEXT: subu16 $17, $2, $16 +; MMR3-NEXT: sllv $9, $5, $17 +; MMR3-NEXT: andi16 $3, $17, 32 ; MMR3-NEXT: sw $3, 20($sp) # 4-byte Folded Spill ; MMR3-NEXT: li16 $2, 0 ; MMR3-NEXT: move $4, $9 ; MMR3-NEXT: movn $4, $2, $3 -; MMR3-NEXT: srlv $5, $8, $16 +; MMR3-NEXT: srlv $5, $7, $16 ; MMR3-NEXT: not16 $3, $16 ; MMR3-NEXT: sw $3, 16($sp) # 4-byte Folded Spill ; MMR3-NEXT: sll16 $2, $6, 1 +; MMR3-NEXT: sw $6, 24($sp) # 4-byte Folded Spill ; MMR3-NEXT: sllv $2, $2, $3 ; MMR3-NEXT: or16 $2, $5 -; MMR3-NEXT: srlv $5, $6, $16 -; MMR3-NEXT: sw $5, 4($sp) # 4-byte Folded Spill +; MMR3-NEXT: srlv $7, $6, $16 ; MMR3-NEXT: andi16 $3, $16, 32 ; MMR3-NEXT: sw $3, 12($sp) # 4-byte Folded Spill -; MMR3-NEXT: movn $2, $5, $3 +; MMR3-NEXT: movn $2, $7, $3 ; MMR3-NEXT: addiu $3, $16, -64 ; MMR3-NEXT: or16 $2, $4 -; MMR3-NEXT: srlv $4, $17, $3 -; MMR3-NEXT: sw $4, 8($sp) # 4-byte Folded Spill -; MMR3-NEXT: lw $4, 28($sp) # 4-byte Folded Reload -; MMR3-NEXT: sll16 $6, $4, 1 -; MMR3-NEXT: not16 $5, $3 -; MMR3-NEXT: sllv $5, $6, $5 -; MMR3-NEXT: lw $17, 8($sp) # 4-byte Folded Reload -; MMR3-NEXT: or16 $5, $17 -; MMR3-NEXT: srlv $1, $4, $3 -; MMR3-NEXT: andi16 $3, $3, 32 +; MMR3-NEXT: lw $6, 4($sp) # 4-byte Folded Reload +; MMR3-NEXT: srlv $3, $6, $3 ; MMR3-NEXT: sw $3, 8($sp) # 4-byte Folded Spill -; MMR3-NEXT: movn $5, $1, $3 +; MMR3-NEXT: lw $3, 28($sp) # 4-byte Folded Reload +; MMR3-NEXT: sll16 $4, $3, 1 +; MMR3-NEXT: sw $4, 0($sp) # 4-byte Folded Spill +; MMR3-NEXT: addiu $5, $16, -64 +; MMR3-NEXT: not16 $5, $5 +; MMR3-NEXT: sllv $5, $4, $5 +; MMR3-NEXT: lw $4, 8($sp) # 4-byte Folded Reload +; MMR3-NEXT: or16 $5, $4 +; MMR3-NEXT: addiu $4, $16, -64 +; MMR3-NEXT: srlv $1, $3, $4 +; MMR3-NEXT: andi16 $4, $4, 32 +; MMR3-NEXT: sw $4, 8($sp) # 4-byte Folded Spill +; MMR3-NEXT: movn $5, $1, $4 ; MMR3-NEXT: sltiu $10, $16, 64 ; MMR3-NEXT: movn $5, $2, $10 -; MMR3-NEXT: sllv $2, $4, $7 -; MMR3-NEXT: not16 $3, $7 -; MMR3-NEXT: lw $7, 0($sp) # 4-byte Folded Reload -; MMR3-NEXT: srl16 $4, $7, 1 +; MMR3-NEXT: sllv $2, $3, $17 +; MMR3-NEXT: not16 $3, $17 +; MMR3-NEXT: srl16 $4, $6, 1 ; MMR3-NEXT: srlv $4, $4, $3 ; MMR3-NEXT: or16 $4, $2 -; MMR3-NEXT: srlv $2, $7, $16 +; MMR3-NEXT: srlv $2, $6, $16 ; MMR3-NEXT: lw $3, 16($sp) # 4-byte Folded Reload +; MMR3-NEXT: lw $6, 0($sp) # 4-byte Folded Reload ; MMR3-NEXT: sllv $3, $6, $3 ; MMR3-NEXT: or16 $3, $2 ; MMR3-NEXT: lw $2, 28($sp) # 4-byte Folded Reload ; MMR3-NEXT: srlv $2, $2, $16 -; MMR3-NEXT: lw $17, 12($sp) # 4-byte Folded Reload -; MMR3-NEXT: movn $3, $2, $17 +; MMR3-NEXT: lw $6, 12($sp) # 4-byte Folded Reload +; MMR3-NEXT: movn $3, $2, $6 ; MMR3-NEXT: movz $5, $8, $16 -; MMR3-NEXT: li16 $6, 0 -; MMR3-NEXT: movz $3, $6, $10 -; MMR3-NEXT: lw $7, 20($sp) # 4-byte Folded Reload -; MMR3-NEXT: movn $4, $9, $7 -; MMR3-NEXT: lw $6, 4($sp) # 4-byte Folded Reload -; MMR3-NEXT: li16 $7, 0 -; MMR3-NEXT: movn $6, $7, $17 -; MMR3-NEXT: or16 $6, $4 +; MMR3-NEXT: li16 $17, 0 +; MMR3-NEXT: movz $3, $17, $10 +; MMR3-NEXT: lw $17, 20($sp) # 4-byte Folded Reload +; MMR3-NEXT: movn $4, $9, $17 +; MMR3-NEXT: li16 $17, 0 +; MMR3-NEXT: movn $7, $17, $6 +; MMR3-NEXT: or16 $7, $4 ; MMR3-NEXT: lw $4, 8($sp) # 4-byte Folded Reload -; MMR3-NEXT: movn $1, $7, $4 -; MMR3-NEXT: li16 $7, 0 -; MMR3-NEXT: movn $1, $6, $10 +; MMR3-NEXT: movn $1, $17, $4 +; MMR3-NEXT: li16 $17, 0 +; MMR3-NEXT: movn $1, $7, $10 ; MMR3-NEXT: lw $4, 24($sp) # 4-byte Folded Reload ; MMR3-NEXT: movz $1, $4, $16 -; MMR3-NEXT: movn $2, $7, $17 +; MMR3-NEXT: movn $2, $17, $6 ; MMR3-NEXT: li16 $4, 0 ; MMR3-NEXT: movz $2, $4, $10 ; MMR3-NEXT: move $4, $1 @@ -855,98 +856,91 @@ define signext i128 @lshr_i128(i128 signext %a, i128 signext %b) { ; ; MMR6-LABEL: lshr_i128: ; MMR6: # %bb.0: # %entry -; MMR6-NEXT: addiu $sp, $sp, -32 -; MMR6-NEXT: .cfi_def_cfa_offset 32 -; MMR6-NEXT: sw $17, 28($sp) # 4-byte Folded Spill -; MMR6-NEXT: sw $16, 24($sp) # 4-byte Folded Spill +; MMR6-NEXT: addiu $sp, $sp, -24 +; MMR6-NEXT: .cfi_def_cfa_offset 24 +; MMR6-NEXT: sw $17, 20($sp) # 4-byte Folded Spill +; MMR6-NEXT: sw $16, 16($sp) # 4-byte Folded Spill ; MMR6-NEXT: .cfi_offset 17, -4 ; MMR6-NEXT: .cfi_offset 16, -8 ; MMR6-NEXT: move $1, $7 -; MMR6-NEXT: move $7, $5 -; MMR6-NEXT: lw $3, 60($sp) +; MMR6-NEXT: move $7, $4 +; MMR6-NEXT: lw $3, 52($sp) ; MMR6-NEXT: srlv $2, $1, $3 -; MMR6-NEXT: not16 $5, $3 -; MMR6-NEXT: sw $5, 12($sp) # 4-byte Folded Spill -; MMR6-NEXT: move $17, $6 -; MMR6-NEXT: sw $6, 16($sp) # 4-byte Folded Spill +; MMR6-NEXT: not16 $16, $3 +; MMR6-NEXT: sw $16, 8($sp) # 4-byte Folded Spill +; MMR6-NEXT: move $4, $6 +; MMR6-NEXT: sw $6, 12($sp) # 4-byte Folded Spill ; MMR6-NEXT: sll16 $6, $6, 1 -; MMR6-NEXT: sllv $6, $6, $5 +; MMR6-NEXT: sllv $6, $6, $16 ; MMR6-NEXT: or $8, $6, $2 -; MMR6-NEXT: addiu $5, $3, -64 -; MMR6-NEXT: srlv $9, $7, $5 -; MMR6-NEXT: move $6, $4 -; MMR6-NEXT: sll16 $2, $4, 1 -; MMR6-NEXT: sw $2, 8($sp) # 4-byte Folded Spill -; MMR6-NEXT: not16 $16, $5 +; MMR6-NEXT: addiu $6, $3, -64 +; MMR6-NEXT: srlv $9, $5, $6 +; MMR6-NEXT: sll16 $2, $7, 1 +; MMR6-NEXT: sw $2, 4($sp) # 4-byte Folded Spill +; MMR6-NEXT: not16 $16, $6 ; MMR6-NEXT: sllv $10, $2, $16 ; MMR6-NEXT: andi16 $16, $3, 32 ; MMR6-NEXT: seleqz $8, $8, $16 ; MMR6-NEXT: or $9, $10, $9 -; MMR6-NEXT: srlv $10, $17, $3 +; MMR6-NEXT: srlv $10, $4, $3 ; MMR6-NEXT: selnez $11, $10, $16 ; MMR6-NEXT: li16 $17, 64 ; MMR6-NEXT: subu16 $2, $17, $3 -; MMR6-NEXT: sllv $12, $7, $2 -; MMR6-NEXT: move $17, $7 +; MMR6-NEXT: sllv $12, $5, $2 ; MMR6-NEXT: andi16 $4, $2, 32 -; MMR6-NEXT: andi16 $7, $5, 32 -; MMR6-NEXT: sw $7, 20($sp) # 4-byte Folded Spill -; MMR6-NEXT: seleqz $9, $9, $7 +; MMR6-NEXT: andi16 $17, $6, 32 +; MMR6-NEXT: seleqz $9, $9, $17 ; MMR6-NEXT: seleqz $13, $12, $4 ; MMR6-NEXT: or $8, $11, $8 ; MMR6-NEXT: selnez $11, $12, $4 -; MMR6-NEXT: sllv $12, $6, $2 -; MMR6-NEXT: move $7, $6 -; MMR6-NEXT: sw $6, 4($sp) # 4-byte Folded Spill +; MMR6-NEXT: sllv $12, $7, $2 ; MMR6-NEXT: not16 $2, $2 -; MMR6-NEXT: srl16 $6, $17, 1 +; MMR6-NEXT: srl16 $6, $5, 1 ; MMR6-NEXT: srlv $2, $6, $2 ; MMR6-NEXT: or $2, $12, $2 ; MMR6-NEXT: seleqz $2, $2, $4 -; MMR6-NEXT: srlv $4, $7, $5 -; MMR6-NEXT: or $11, $11, $2 -; MMR6-NEXT: or $5, $8, $13 -; MMR6-NEXT: srlv $6, $17, $3 -; MMR6-NEXT: lw $2, 20($sp) # 4-byte Folded Reload -; MMR6-NEXT: selnez $7, $4, $2 -; MMR6-NEXT: sltiu $8, $3, 64 -; MMR6-NEXT: selnez $12, $5, $8 -; MMR6-NEXT: or $7, $7, $9 -; MMR6-NEXT: lw $5, 12($sp) # 4-byte Folded Reload +; MMR6-NEXT: addiu $4, $3, -64 +; MMR6-NEXT: srlv $4, $7, $4 +; MMR6-NEXT: or $12, $11, $2 +; MMR6-NEXT: or $6, $8, $13 +; MMR6-NEXT: srlv $5, $5, $3 +; MMR6-NEXT: selnez $8, $4, $17 +; MMR6-NEXT: sltiu $11, $3, 64 +; MMR6-NEXT: selnez $13, $6, $11 +; MMR6-NEXT: or $8, $8, $9 ; MMR6-NEXT: lw $2, 8($sp) # 4-byte Folded Reload -; MMR6-NEXT: sllv $9, $2, $5 +; MMR6-NEXT: lw $6, 4($sp) # 4-byte Folded Reload +; MMR6-NEXT: sllv $9, $6, $2 ; MMR6-NEXT: seleqz $10, $10, $16 -; MMR6-NEXT: li16 $5, 0 -; MMR6-NEXT: or $10, $10, $11 -; MMR6-NEXT: or $6, $9, $6 -; MMR6-NEXT: seleqz $2, $7, $8 -; MMR6-NEXT: seleqz $7, $5, $8 -; MMR6-NEXT: lw $5, 4($sp) # 4-byte Folded Reload -; MMR6-NEXT: srlv $9, $5, $3 -; MMR6-NEXT: seleqz $11, $9, $16 -; MMR6-NEXT: selnez $11, $11, $8 +; MMR6-NEXT: li16 $2, 0 +; MMR6-NEXT: or $10, $10, $12 +; MMR6-NEXT: or $9, $9, $5 +; MMR6-NEXT: seleqz $5, $8, $11 +; MMR6-NEXT: seleqz $8, $2, $11 +; MMR6-NEXT: srlv $7, $7, $3 +; MMR6-NEXT: seleqz $2, $7, $16 +; MMR6-NEXT: selnez $2, $2, $11 ; MMR6-NEXT: seleqz $1, $1, $3 -; MMR6-NEXT: or $2, $12, $2 -; MMR6-NEXT: selnez $2, $2, $3 -; MMR6-NEXT: or $5, $1, $2 -; MMR6-NEXT: or $2, $7, $11 -; MMR6-NEXT: seleqz $1, $6, $16 -; MMR6-NEXT: selnez $6, $9, $16 -; MMR6-NEXT: lw $16, 16($sp) # 4-byte Folded Reload -; MMR6-NEXT: seleqz $9, $16, $3 -; MMR6-NEXT: selnez $10, $10, $8 -; MMR6-NEXT: lw $16, 20($sp) # 4-byte Folded Reload -; MMR6-NEXT: seleqz $4, $4, $16 -; MMR6-NEXT: seleqz $4, $4, $8 -; MMR6-NEXT: or $4, $10, $4 +; MMR6-NEXT: or $5, $13, $5 +; MMR6-NEXT: selnez $5, $5, $3 +; MMR6-NEXT: or $5, $1, $5 +; MMR6-NEXT: or $2, $8, $2 +; MMR6-NEXT: seleqz $1, $9, $16 +; MMR6-NEXT: selnez $6, $7, $16 +; MMR6-NEXT: lw $7, 12($sp) # 4-byte Folded Reload +; MMR6-NEXT: seleqz $7, $7, $3 +; MMR6-NEXT: selnez $9, $10, $11 +; MMR6-NEXT: seleqz $4, $4, $17 +; MMR6-NEXT: seleqz $4, $4, $11 </cut>

3 years, 12 months

[CI-NOTIFY]: TCWG Bisect tcwg_gnu_native_build/master-aarch64 - Build # 1 - Successful!

by ci_notify＠linaro.org

Successfully identified regression in *gcc* in CI configuration tcwg_gnu_native_build/master-aarch64. So far, this commit has regressed CI configurations: - tcwg_gnu_native_build/master-aarch64 Culprit: <cut> commit cad36f38576a6a781e3c62ab061c68f5b8dab13a Author: Roger Sayle <roger(a)nextmovesoftware.com> Date: Tue Aug 31 11:45:07 2021 +0100 Preserve SUBREG_PROMOTED_VAR_P on (extend:HI (subreg/s:QI (reg:SI))). SUBREG_PROMOTED_VAR_P is a mechanism for tracking that a partial subreg is correctly zero-extended or sign-extended in the parent register. For example, the RTL (subreg/s/v:QI (reg/v:SI 23 [ x ]) 0) indicates that the byte x is zero extended in reg:SI 23, which is useful for optimization. An example is that zero extending the above QImode value to HImode can simply use a wider subreg, i.e. (subreg:HI (reg/v:SI 23 [ x ]) 0). This patch addresses the oversight/missed optimization opportunity that the new HImode subreg above should retain its SUBREG_PROMOTED_VAR_P annotation as its value is guaranteed to be correctly extended in the SImode parent. The code below to preserve SUBREG_PROMOTED_VAR_P is already present in the middle-end (e.g. simplify-rtx.c:7232-7242) but missing from one or two (precisely three) places that (accidentally) strip it. Whilst there I also added another optimization. If we need to extend the above QImode value beyond the SImode register holding it, say to DImode, we can eliminate the SUBREG and simply extend from the SImode register to DImode. 2021-08-31 Roger Sayle <roger(a)nextmovesoftware.com> gcc/ChangeLog * expr.c (convert_modes): Preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. * simplify-rtx.c (simplify_unary_operation_1) [SIGN_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. Generate SIGN_EXTEND of the SUBREG_REG when a subreg would be paradoxical. [ZERO_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. Generate ZERO_EXTEND of the SUBREG_REG when a subreg would be paradoxical. </cut> Results regressed to (for first_bad == cad36f38576a6a781e3c62ab061c68f5b8dab13a) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # First few build errors in logs: # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-1.h:127:36: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-1.h:127:36: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-1.h:127:36: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 /home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:05:59 make[2]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_6/abe/snapshots/gcc.git~master/libgcc/shared-object.mk:14: trunctfhf2.o] Error 1 from (for last_good == 0960d937d9bee3c831d0b64a9c828c263a58ff89) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe gcc: 2 # build_abe linux: 4 # build_abe glibc: 5 # build_abe gdb: 6 Artifacts of last_good build: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-aarch64/1/art… Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-aarch64/1/art… Build top page/logs: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-aarch64/1/ Configuration details: Reproduce builds: <cut> mkdir investigate-gcc-cad36f38576a6a781e3c62ab061c68f5b8dab13a cd investigate-gcc-cad36f38576a6a781e3c62ab061c68f5b8dab13a git clone https://git.linaro.org/toolchain/jenkins-scripts mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-aarch64/1/art… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-aarch64/1/art… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-aarch64/1/art… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_gnu-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gcc/ ./ ./bisect/baseline/ cd gcc # Reproduce first_bad build git checkout --detach cad36f38576a6a781e3c62ab061c68f5b8dab13a ../artifacts/test.sh # Reproduce last_good build git checkout --detach 0960d937d9bee3c831d0b64a9c828c263a58ff89 ../artifacts/test.sh cd .. </cut> History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/… Artifacts: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-aarch64/1/art… Build log: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-aarch64/1/con… Full commit (up to 1000 lines): <cut> commit cad36f38576a6a781e3c62ab061c68f5b8dab13a Author: Roger Sayle <roger(a)nextmovesoftware.com> Date: Tue Aug 31 11:45:07 2021 +0100 Preserve SUBREG_PROMOTED_VAR_P on (extend:HI (subreg/s:QI (reg:SI))). SUBREG_PROMOTED_VAR_P is a mechanism for tracking that a partial subreg is correctly zero-extended or sign-extended in the parent register. For example, the RTL (subreg/s/v:QI (reg/v:SI 23 [ x ]) 0) indicates that the byte x is zero extended in reg:SI 23, which is useful for optimization. An example is that zero extending the above QImode value to HImode can simply use a wider subreg, i.e. (subreg:HI (reg/v:SI 23 [ x ]) 0). This patch addresses the oversight/missed optimization opportunity that the new HImode subreg above should retain its SUBREG_PROMOTED_VAR_P annotation as its value is guaranteed to be correctly extended in the SImode parent. The code below to preserve SUBREG_PROMOTED_VAR_P is already present in the middle-end (e.g. simplify-rtx.c:7232-7242) but missing from one or two (precisely three) places that (accidentally) strip it. Whilst there I also added another optimization. If we need to extend the above QImode value beyond the SImode register holding it, say to DImode, we can eliminate the SUBREG and simply extend from the SImode register to DImode. 2021-08-31 Roger Sayle <roger(a)nextmovesoftware.com> gcc/ChangeLog * expr.c (convert_modes): Preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. * simplify-rtx.c (simplify_unary_operation_1) [SIGN_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. Generate SIGN_EXTEND of the SUBREG_REG when a subreg would be paradoxical. [ZERO_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. Generate ZERO_EXTEND of the SUBREG_REG when a subreg would be paradoxical. --- gcc/expr.c | 19 ++++++++++++++++++- gcc/simplify-rtx.c | 52 ++++++++++++++++++++++++++++++++++++++++++---------- 2 files changed, 60 insertions(+), 11 deletions(-) diff --git a/gcc/expr.c b/gcc/expr.c index 096c0315ecc..5dd98a9bccc 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -688,7 +688,24 @@ convert_modes (machine_mode mode, machine_mode oldmode, rtx x, int unsignedp) && (GET_MODE_PRECISION (subreg_promoted_mode (x)) >= GET_MODE_PRECISION (int_mode)) && SUBREG_CHECK_PROMOTED_SIGN (x, unsignedp)) - x = gen_lowpart (int_mode, SUBREG_REG (x)); + { + scalar_int_mode int_orig_mode; + machine_mode orig_mode = GET_MODE (x); + x = gen_lowpart (int_mode, SUBREG_REG (x)); + + /* Preserve SUBREG_PROMOTED_VAR_P if the new mode is wider than + the original mode, but narrower than the inner mode. */ + if (GET_CODE (x) == SUBREG + && GET_MODE_PRECISION (subreg_promoted_mode (x)) + > GET_MODE_PRECISION (int_mode) + && is_a <scalar_int_mode> (orig_mode, &int_orig_mode) + && GET_MODE_PRECISION (int_mode) + > GET_MODE_PRECISION (int_orig_mode)) + { + SUBREG_PROMOTED_VAR_P (x) = 1; + SUBREG_PROMOTED_SET (x, unsignedp); + } + } if (GET_MODE (x) != VOIDmode) oldmode = GET_MODE (x); diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index e431e0c19d7..ebad5cb5a79 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -1512,12 +1512,28 @@ simplify_context::simplify_unary_operation_1 (rtx_code code, machine_mode mode, target mode is the same as the variable's promotion. */ if (GET_CODE (op) == SUBREG && SUBREG_PROMOTED_VAR_P (op) - && SUBREG_PROMOTED_SIGNED_P (op) - && !paradoxical_subreg_p (mode, GET_MODE (SUBREG_REG (op)))) + && SUBREG_PROMOTED_SIGNED_P (op)) { - temp = rtl_hooks.gen_lowpart_no_emit (mode, SUBREG_REG (op)); - if (temp) - return temp; + rtx subreg = SUBREG_REG (op); + machine_mode subreg_mode = GET_MODE (subreg); + if (!paradoxical_subreg_p (mode, subreg_mode)) + { + temp = rtl_hooks.gen_lowpart_no_emit (mode, subreg); + if (temp) + { + /* Preserve SUBREG_PROMOTED_VAR_P. */ + if (partial_subreg_p (temp)) + { + SUBREG_PROMOTED_VAR_P (temp) = 1; + SUBREG_PROMOTED_SET (temp, 1); + } + return temp; + } + } + else + /* Sign-extending a sign-extended subreg. */ + return simplify_gen_unary (SIGN_EXTEND, mode, + subreg, subreg_mode); } /* (sign_extend:M (sign_extend:N <X>)) is (sign_extend:M <X>). @@ -1631,12 +1647,28 @@ simplify_context::simplify_unary_operation_1 (rtx_code code, machine_mode mode, target mode is the same as the variable's promotion. */ if (GET_CODE (op) == SUBREG && SUBREG_PROMOTED_VAR_P (op) - && SUBREG_PROMOTED_UNSIGNED_P (op) - && !paradoxical_subreg_p (mode, GET_MODE (SUBREG_REG (op)))) + && SUBREG_PROMOTED_UNSIGNED_P (op)) { - temp = rtl_hooks.gen_lowpart_no_emit (mode, SUBREG_REG (op)); - if (temp) - return temp; + rtx subreg = SUBREG_REG (op); + machine_mode subreg_mode = GET_MODE (subreg); + if (!paradoxical_subreg_p (mode, subreg_mode)) + { + temp = rtl_hooks.gen_lowpart_no_emit (mode, subreg); + if (temp) + { + /* Preserve SUBREG_PROMOTED_VAR_P. */ + if (partial_subreg_p (temp)) + { + SUBREG_PROMOTED_VAR_P (temp) = 1; + SUBREG_PROMOTED_SET (temp, 0); + } + return temp; + } + } + else + /* Zero-extending a zero-extended subreg. */ + return simplify_gen_unary (ZERO_EXTEND, mode, + subreg, subreg_mode); } /* Extending a widening multiplication should be canonicalized to </cut>

3 years, 12 months

[CI-NOTIFY]: TCWG Bisect tcwg_gnu_cross_build/master-aarch64 - Build # 1 - Successful!

by ci_notify＠linaro.org

Successfully identified regression in *gcc* in CI configuration tcwg_gnu_cross_build/master-aarch64. So far, this commit has regressed CI configurations: - tcwg_gnu_cross_build/master-aarch64 Culprit: <cut> commit cad36f38576a6a781e3c62ab061c68f5b8dab13a Author: Roger Sayle <roger(a)nextmovesoftware.com> Date: Tue Aug 31 11:45:07 2021 +0100 Preserve SUBREG_PROMOTED_VAR_P on (extend:HI (subreg/s:QI (reg:SI))). SUBREG_PROMOTED_VAR_P is a mechanism for tracking that a partial subreg is correctly zero-extended or sign-extended in the parent register. For example, the RTL (subreg/s/v:QI (reg/v:SI 23 [ x ]) 0) indicates that the byte x is zero extended in reg:SI 23, which is useful for optimization. An example is that zero extending the above QImode value to HImode can simply use a wider subreg, i.e. (subreg:HI (reg/v:SI 23 [ x ]) 0). This patch addresses the oversight/missed optimization opportunity that the new HImode subreg above should retain its SUBREG_PROMOTED_VAR_P annotation as its value is guaranteed to be correctly extended in the SImode parent. The code below to preserve SUBREG_PROMOTED_VAR_P is already present in the middle-end (e.g. simplify-rtx.c:7232-7242) but missing from one or two (precisely three) places that (accidentally) strip it. Whilst there I also added another optimization. If we need to extend the above QImode value beyond the SImode register holding it, say to DImode, we can eliminate the SUBREG and simply extend from the SImode register to DImode. 2021-08-31 Roger Sayle <roger(a)nextmovesoftware.com> gcc/ChangeLog * expr.c (convert_modes): Preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. * simplify-rtx.c (simplify_unary_operation_1) [SIGN_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. Generate SIGN_EXTEND of the SUBREG_REG when a subreg would be paradoxical. [ZERO_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. Generate ZERO_EXTEND of the SUBREG_REG when a subreg would be paradoxical. </cut> Results regressed to (for first_bad == cad36f38576a6a781e3c62ab061c68f5b8dab13a) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # First few build errors in logs: # 00:04:40 cc1: error: no include path in which to search for stdc-predef.h # 00:04:48 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:04:48 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:04:48 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:04:48 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-1.h:127:36: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:04:48 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-1.h:127:36: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:04:48 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-1.h:127:36: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:04:48 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 # 00:04:48 make[2]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/static-object.mk:17: floatsitf.o] Error 1 # 00:04:48 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/soft-fp/op-2.h:249:37: internal compiler error: in subreg_promoted_mode, at rtl.h:3132 from (for last_good == 0960d937d9bee3c831d0b64a9c828c263a58ff89) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe stage1: 2 # build_abe linux: 3 # build_abe glibc: 4 # build_abe stage2: 5 # build_abe gdb: 6 # build_abe qemu: 7 Artifacts of last_good build: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-aarch64/1/arti… Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-aarch64/1/arti… Build top page/logs: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-aarch64/1/ Configuration details: Reproduce builds: <cut> mkdir investigate-gcc-cad36f38576a6a781e3c62ab061c68f5b8dab13a cd investigate-gcc-cad36f38576a6a781e3c62ab061c68f5b8dab13a git clone https://git.linaro.org/toolchain/jenkins-scripts mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-aarch64/1/arti… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-aarch64/1/arti… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-aarch64/1/arti… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_gnu-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gcc/ ./ ./bisect/baseline/ cd gcc # Reproduce first_bad build git checkout --detach cad36f38576a6a781e3c62ab061c68f5b8dab13a ../artifacts/test.sh # Reproduce last_good build git checkout --detach 0960d937d9bee3c831d0b64a9c828c263a58ff89 ../artifacts/test.sh cd .. </cut> History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/… Artifacts: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-aarch64/1/arti… Build log: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-aarch64/1/cons… Full commit (up to 1000 lines): <cut> commit cad36f38576a6a781e3c62ab061c68f5b8dab13a Author: Roger Sayle <roger(a)nextmovesoftware.com> Date: Tue Aug 31 11:45:07 2021 +0100 Preserve SUBREG_PROMOTED_VAR_P on (extend:HI (subreg/s:QI (reg:SI))). SUBREG_PROMOTED_VAR_P is a mechanism for tracking that a partial subreg is correctly zero-extended or sign-extended in the parent register. For example, the RTL (subreg/s/v:QI (reg/v:SI 23 [ x ]) 0) indicates that the byte x is zero extended in reg:SI 23, which is useful for optimization. An example is that zero extending the above QImode value to HImode can simply use a wider subreg, i.e. (subreg:HI (reg/v:SI 23 [ x ]) 0). This patch addresses the oversight/missed optimization opportunity that the new HImode subreg above should retain its SUBREG_PROMOTED_VAR_P annotation as its value is guaranteed to be correctly extended in the SImode parent. The code below to preserve SUBREG_PROMOTED_VAR_P is already present in the middle-end (e.g. simplify-rtx.c:7232-7242) but missing from one or two (precisely three) places that (accidentally) strip it. Whilst there I also added another optimization. If we need to extend the above QImode value beyond the SImode register holding it, say to DImode, we can eliminate the SUBREG and simply extend from the SImode register to DImode. 2021-08-31 Roger Sayle <roger(a)nextmovesoftware.com> gcc/ChangeLog * expr.c (convert_modes): Preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. * simplify-rtx.c (simplify_unary_operation_1) [SIGN_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. Generate SIGN_EXTEND of the SUBREG_REG when a subreg would be paradoxical. [ZERO_EXTEND]: Likewise, preserve SUBREG_PROMOTED_VAR_P when creating a (wider) partial subreg from a SUBREG_PROMOTED_VAR_P subreg. Generate ZERO_EXTEND of the SUBREG_REG when a subreg would be paradoxical. --- gcc/expr.c | 19 ++++++++++++++++++- gcc/simplify-rtx.c | 52 ++++++++++++++++++++++++++++++++++++++++++---------- 2 files changed, 60 insertions(+), 11 deletions(-) diff --git a/gcc/expr.c b/gcc/expr.c index 096c0315ecc..5dd98a9bccc 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -688,7 +688,24 @@ convert_modes (machine_mode mode, machine_mode oldmode, rtx x, int unsignedp) && (GET_MODE_PRECISION (subreg_promoted_mode (x)) >= GET_MODE_PRECISION (int_mode)) && SUBREG_CHECK_PROMOTED_SIGN (x, unsignedp)) - x = gen_lowpart (int_mode, SUBREG_REG (x)); + { + scalar_int_mode int_orig_mode; + machine_mode orig_mode = GET_MODE (x); + x = gen_lowpart (int_mode, SUBREG_REG (x)); + + /* Preserve SUBREG_PROMOTED_VAR_P if the new mode is wider than + the original mode, but narrower than the inner mode. */ + if (GET_CODE (x) == SUBREG + && GET_MODE_PRECISION (subreg_promoted_mode (x)) + > GET_MODE_PRECISION (int_mode) + && is_a <scalar_int_mode> (orig_mode, &int_orig_mode) + && GET_MODE_PRECISION (int_mode) + > GET_MODE_PRECISION (int_orig_mode)) + { + SUBREG_PROMOTED_VAR_P (x) = 1; + SUBREG_PROMOTED_SET (x, unsignedp); + } + } if (GET_MODE (x) != VOIDmode) oldmode = GET_MODE (x); diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index e431e0c19d7..ebad5cb5a79 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -1512,12 +1512,28 @@ simplify_context::simplify_unary_operation_1 (rtx_code code, machine_mode mode, target mode is the same as the variable's promotion. */ if (GET_CODE (op) == SUBREG && SUBREG_PROMOTED_VAR_P (op) - && SUBREG_PROMOTED_SIGNED_P (op) - && !paradoxical_subreg_p (mode, GET_MODE (SUBREG_REG (op)))) + && SUBREG_PROMOTED_SIGNED_P (op)) { - temp = rtl_hooks.gen_lowpart_no_emit (mode, SUBREG_REG (op)); - if (temp) - return temp; + rtx subreg = SUBREG_REG (op); + machine_mode subreg_mode = GET_MODE (subreg); + if (!paradoxical_subreg_p (mode, subreg_mode)) + { + temp = rtl_hooks.gen_lowpart_no_emit (mode, subreg); + if (temp) + { + /* Preserve SUBREG_PROMOTED_VAR_P. */ + if (partial_subreg_p (temp)) + { + SUBREG_PROMOTED_VAR_P (temp) = 1; + SUBREG_PROMOTED_SET (temp, 1); + } + return temp; + } + } + else + /* Sign-extending a sign-extended subreg. */ + return simplify_gen_unary (SIGN_EXTEND, mode, + subreg, subreg_mode); } /* (sign_extend:M (sign_extend:N <X>)) is (sign_extend:M <X>). @@ -1631,12 +1647,28 @@ simplify_context::simplify_unary_operation_1 (rtx_code code, machine_mode mode, target mode is the same as the variable's promotion. */ if (GET_CODE (op) == SUBREG && SUBREG_PROMOTED_VAR_P (op) - && SUBREG_PROMOTED_UNSIGNED_P (op) - && !paradoxical_subreg_p (mode, GET_MODE (SUBREG_REG (op)))) + && SUBREG_PROMOTED_UNSIGNED_P (op)) { - temp = rtl_hooks.gen_lowpart_no_emit (mode, SUBREG_REG (op)); - if (temp) - return temp; + rtx subreg = SUBREG_REG (op); + machine_mode subreg_mode = GET_MODE (subreg); + if (!paradoxical_subreg_p (mode, subreg_mode)) + { + temp = rtl_hooks.gen_lowpart_no_emit (mode, subreg); + if (temp) + { + /* Preserve SUBREG_PROMOTED_VAR_P. */ + if (partial_subreg_p (temp)) + { + SUBREG_PROMOTED_VAR_P (temp) = 1; + SUBREG_PROMOTED_SET (temp, 0); + } + return temp; + } + } + else + /* Zero-extending a zero-extended subreg. */ + return simplify_gen_unary (ZERO_EXTEND, mode, + subreg, subreg_mode); } /* Extending a widening multiplication should be canonicalized to </cut>

3 years, 12 months

[CI-NOTIFY]: TCWG Bisect tcwg_gnu_native_build/master-arm - Build # 1 - Successful!

by ci_notify＠linaro.org

Successfully identified regression in *gdb* in CI configuration tcwg_gnu_native_build/master-arm. So far, this commit has regressed CI configurations: - tcwg_gnu_native_build/master-arm Culprit: <cut> commit 282aa4f7d292eb4bc213d028465a3b96f5af2f22 Author: Tom Tromey <tom(a)tromey.com> Date: Sat Aug 28 13:16:50 2021 -0600 Add some parallel_for_each tests Tom de Vries noticed that a patch in the DWARF scanner rewrite series caused a regression in parallel_for_each -- it started crashing in the case where the number of threads is 0 (there was an unchecked use of "n-1" that was used to size an array). He also pointed out that there were no tests of parallel_for_each. This adds a few tests of parallel_for_each, primarily testing that different settings for the number of threads will work. This test catches the bug that he found in that series. </cut> Results regressed to (for first_bad == 282aa4f7d292eb4bc213d028465a3b96f5af2f22) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe gcc: 2 # build_abe linux: 4 # build_abe glibc: 5 # First few build errors in logs: # 00:03:45 ../../../../../../gdb/gdb/unittests/parallel-for-selftests.c:53:30: error: use of deleted function ‘std::atomic<int>::atomic(const std::atomic<int>&)’ # 00:03:45 make[1]: *** [unittests/parallel-for-selftests.o] Error 1 # 00:03:46 make: *** [all-gdb] Error 2 from (for last_good == ee8b88452c1cb1be97199942aee7a76bbca210ee) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe gcc: 2 # build_abe linux: 4 # build_abe glibc: 5 # build_abe gdb: 6 Artifacts of last_good build: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-arm/1/artifac… Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-arm/1/artifac… Build top page/logs: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-arm/1/ Configuration details: Reproduce builds: <cut> mkdir investigate-gdb-282aa4f7d292eb4bc213d028465a3b96f5af2f22 cd investigate-gdb-282aa4f7d292eb4bc213d028465a3b96f5af2f22 git clone https://git.linaro.org/toolchain/jenkins-scripts mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-arm/1/artifac… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-arm/1/artifac… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-arm/1/artifac… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_gnu-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gdb/ ./ ./bisect/baseline/ cd gdb # Reproduce first_bad build git checkout --detach 282aa4f7d292eb4bc213d028465a3b96f5af2f22 ../artifacts/test.sh # Reproduce last_good build git checkout --detach ee8b88452c1cb1be97199942aee7a76bbca210ee ../artifacts/test.sh cd .. </cut> History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/… Artifacts: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-arm/1/artifac… Build log: https://ci.linaro.org/job/tcwg_gnu_native_build-bisect-master-arm/1/console… Full commit (up to 1000 lines): <cut> commit 282aa4f7d292eb4bc213d028465a3b96f5af2f22 Author: Tom Tromey <tom(a)tromey.com> Date: Sat Aug 28 13:16:50 2021 -0600 Add some parallel_for_each tests Tom de Vries noticed that a patch in the DWARF scanner rewrite series caused a regression in parallel_for_each -- it started crashing in the case where the number of threads is 0 (there was an unchecked use of "n-1" that was used to size an array). He also pointed out that there were no tests of parallel_for_each. This adds a few tests of parallel_for_each, primarily testing that different settings for the number of threads will work. This test catches the bug that he found in that series. --- gdb/Makefile.in | 1 + gdb/unittests/parallel-for-selftests.c | 86 ++++++++++++++++++++++++++++++++++ 2 files changed, 87 insertions(+) diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 73a1bf83c85..320d3326a81 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -456,6 +456,7 @@ SELFTESTS_SRCS = \ unittests/offset-type-selftests.c \ unittests/observable-selftests.c \ unittests/optional-selftests.c \ + unittests/parallel-for-selftests.c \ unittests/parse-connection-spec-selftests.c \ unittests/ptid-selftests.c \ unittests/main-thread-selftests.c \ diff --git a/gdb/unittests/parallel-for-selftests.c b/gdb/unittests/parallel-for-selftests.c new file mode 100644 index 00000000000..7f61b709fa7 --- /dev/null +++ b/gdb/unittests/parallel-for-selftests.c @@ -0,0 +1,86 @@ +/* Self tests for parallel_for_each + + Copyright (C) 2021 Free Software Foundation, Inc. + + This file is part of GDB. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include "defs.h" +#include "gdbsupport/selftest.h" +#include "gdbsupport/parallel-for.h" +#include "gdbsupport/thread-pool.h" + +#if CXX_STD_THREAD + +namespace selftests { +namespace parallel_for { + +struct save_restore_n_threads +{ + save_restore_n_threads () + : n_threads (gdb::thread_pool::g_thread_pool->thread_count ()) + { + } + + ~save_restore_n_threads () + { + gdb::thread_pool::g_thread_pool->set_thread_count (n_threads); + } + + int n_threads; +}; + +static void +test (int n_threads) +{ + save_restore_n_threads saver; + gdb::thread_pool::g_thread_pool->set_thread_count (n_threads); + +#define NUMBER 10000 + + std::atomic<int> counter = 0; + gdb::parallel_for_each (0, NUMBER, + [&] (int start, int end) + { + counter += end - start; + }); + + SELF_CHECK (counter == NUMBER); + +#undef NUMBER +} + +static void +test_n_threads () +{ + test (0); + test (1); + test (3); +} + +} +} + +#endif /* CXX_STD_THREAD */ + +void _initialize_parallel_for_selftests (); +void +_initialize_parallel_for_selftests () +{ +#ifdef CXX_STD_THREAD + selftests::register_test ("parallel_for", + selftests::parallel_for::test_n_threads); +#endif /* CXX_STD_THREAD */ +} </cut>

3 years, 12 months

[CI-NOTIFY]: TCWG Bisect tcwg_gnu_cross_build/master-arm - Build # 1 - Successful!

by ci_notify＠linaro.org

Successfully identified regression in *gcc* in CI configuration tcwg_gnu_cross_build/master-arm. So far, this commit has regressed CI configurations: - tcwg_gnu_cross_build/master-arm Culprit: <cut> commit caf81d3b57501b1f58dcd9b1ef9d7b4bc76f4ab1 Author: Sebastian Huber <sebastian.huber(a)embedded-brains.de> Date: Tue Aug 17 09:53:43 2021 +0200 Use __builtin_trap() for abort() if inhibit_libc abort() is used in gcc_assert() and gcc_unreachable() which is used by target libraries such as libgcov.a. This patch changes the abort() definition under certain conditions. If inhibit_libc is defined and abort is not already defined, then abort() is defined to __builtin_trap(). The inhibit_libc define is usually defined if GCC is built for targets running in embedded systems which may optionally use a C standard library. If inhibit_libc is defined, then there may be still a full featured abort() available. abort() is a heavy weight function which depends on signals and file streams. For statically linked applications, this means that a dependency on gcc_assert() pulls in the support for signals and file streams. This could prevent using gcov to test low end targets for example. Using __builtin_trap() avoids these dependencies if the target implements a "trap" instruction. The application or operating system could use a trap handler to react to failed GCC runtime checks which caused a trap. gcc/ * tsystem.h (abort): Define abort() if inhibit_libc is defined and it is not already defined. </cut> Results regressed to (for first_bad == caf81d3b57501b1f58dcd9b1ef9d7b4bc76f4ab1) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # First few build errors in logs: # 00:01:44 cc1: error: no include path in which to search for stdc-predef.h # 00:02:05 /home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/unwind-arm-common.inc:55:24: error: macro passed 1 arguments, but takes just 0 # 00:02:05 make[2]: *** [/home/tcwg-buildslave/workspace/tcwg_gnu_1/abe/snapshots/gcc.git~master/libgcc/static-object.mk:17: unwind-arm.o] Error 1 # 00:02:06 make[1]: *** [Makefile:12484: all-target-libgcc] Error 2 # 00:02:06 make: *** [Makefile:953: all] Error 2 from (for last_good == d7e56b084d0b230ae5ee280f569d679fa0f09f4d) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe stage1: 2 # build_abe linux: 3 # build_abe glibc: 4 # build_abe stage2: 5 # build_abe gdb: 6 # build_abe qemu: 7 Artifacts of last_good build: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-arm/1/artifact… Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-arm/1/artifact… Build top page/logs: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-arm/1/ Configuration details: Reproduce builds: <cut> mkdir investigate-gcc-caf81d3b57501b1f58dcd9b1ef9d7b4bc76f4ab1 cd investigate-gcc-caf81d3b57501b1f58dcd9b1ef9d7b4bc76f4ab1 git clone https://git.linaro.org/toolchain/jenkins-scripts mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-arm/1/artifact… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-arm/1/artifact… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-arm/1/artifact… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_gnu-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gcc/ ./ ./bisect/baseline/ cd gcc # Reproduce first_bad build git checkout --detach caf81d3b57501b1f58dcd9b1ef9d7b4bc76f4ab1 ../artifacts/test.sh # Reproduce last_good build git checkout --detach d7e56b084d0b230ae5ee280f569d679fa0f09f4d ../artifacts/test.sh cd .. </cut> History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/… Artifacts: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-arm/1/artifact… Build log: https://ci.linaro.org/job/tcwg_gnu_cross_build-bisect-master-arm/1/consoleT… Full commit (up to 1000 lines): <cut> commit caf81d3b57501b1f58dcd9b1ef9d7b4bc76f4ab1 Author: Sebastian Huber <sebastian.huber(a)embedded-brains.de> Date: Tue Aug 17 09:53:43 2021 +0200 Use __builtin_trap() for abort() if inhibit_libc abort() is used in gcc_assert() and gcc_unreachable() which is used by target libraries such as libgcov.a. This patch changes the abort() definition under certain conditions. If inhibit_libc is defined and abort is not already defined, then abort() is defined to __builtin_trap(). The inhibit_libc define is usually defined if GCC is built for targets running in embedded systems which may optionally use a C standard library. If inhibit_libc is defined, then there may be still a full featured abort() available. abort() is a heavy weight function which depends on signals and file streams. For statically linked applications, this means that a dependency on gcc_assert() pulls in the support for signals and file streams. This could prevent using gcov to test low end targets for example. Using __builtin_trap() avoids these dependencies if the target implements a "trap" instruction. The application or operating system could use a trap handler to react to failed GCC runtime checks which caused a trap. gcc/ * tsystem.h (abort): Define abort() if inhibit_libc is defined and it is not already defined. --- gcc/tsystem.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/tsystem.h b/gcc/tsystem.h index e1e6a96a4f4..5c72c69ff3e 100644 --- a/gcc/tsystem.h +++ b/gcc/tsystem.h @@ -59,7 +59,7 @@ extern int atexit (void (*)(void)); #endif #ifndef abort -extern void abort (void) __attribute__ ((__noreturn__)); +#define abort() __builtin_trap () #endif #ifndef strlen </cut>

3 years, 12 months

[CI-NOTIFY]: TCWG Bisect tcwg_gcc_bootstrap/master-aarch64-bootstrap_profiled - Build # 3 - Fixed!

by ci_notify＠linaro.org

Successfully identified regression in *binutils* in CI configuration tcwg_gcc_bootstrap/master-aarch64-bootstrap_profiled. So far, this commit has regressed CI configurations: - tcwg_gcc_bootstrap/master-aarch64-bootstrap_profiled Culprit: <cut> commit a12ea97b9dab8eedf411fc5052ffaa8be29f5d36 Author: GDB Administrator <gdbadmin(a)sourceware.org> Date: Mon Aug 23 00:00:07 2021 +0000 Automatic date update in version.in </cut> Results regressed to (for first_bad == a12ea97b9dab8eedf411fc5052ffaa8be29f5d36) # reset_artifacts: -10 # true: 0 # First few build errors in logs: from (for last_good == fe7f0b013526b30ef657c5ad34a3c622a54499ac) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe bootstrap_profiled: 2 Artifacts of last_good build: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-aarch64-bootstra… Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-aarch64-bootstra… Build top page/logs: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-aarch64-bootstra… Configuration details: Reproduce builds: <cut> mkdir investigate-binutils-a12ea97b9dab8eedf411fc5052ffaa8be29f5d36 cd investigate-binutils-a12ea97b9dab8eedf411fc5052ffaa8be29f5d36 git clone https://git.linaro.org/toolchain/jenkins-scripts mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-aarch64-bootstra… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-aarch64-bootstra… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-aarch64-bootstra… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_gnu-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /binutils/ ./ ./bisect/baseline/ cd binutils # Reproduce first_bad build git checkout --detach a12ea97b9dab8eedf411fc5052ffaa8be29f5d36 ../artifacts/test.sh # Reproduce last_good build git checkout --detach fe7f0b013526b30ef657c5ad34a3c622a54499ac ../artifacts/test.sh cd .. </cut> History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/… Artifacts: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-aarch64-bootstra… Build log: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-aarch64-bootstra… Full commit (up to 1000 lines): <cut> commit a12ea97b9dab8eedf411fc5052ffaa8be29f5d36 Author: GDB Administrator <gdbadmin(a)sourceware.org> Date: Mon Aug 23 00:00:07 2021 +0000 Automatic date update in version.in --- bfd/version.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/bfd/version.h b/bfd/version.h index d22e02c7fd4..66d43d6f3a1 100644 --- a/bfd/version.h +++ b/bfd/version.h @@ -16,7 +16,7 @@ In releases, the date is not included in either version strings or sonames. */ -#define BFD_VERSION_DATE 20210822 +#define BFD_VERSION_DATE 20210823 #define BFD_VERSION @bfd_version@ #define BFD_VERSION_STRING @bfd_version_package@ @bfd_version_string@ #define REPORT_BUGS_TO @report_bugs_to@ </cut>

4 years

[ACTIVITY] report week ending 26 Aug

by Peter Maydell

Progress (short week, 3 days): * UM-2 [QEMU upstream maintainership] + QEMU 6.1.0 has now been released + Sent out the first arm pullreq for the 6.2 cycle, including another slice of the MVE patches + tried to work through some of the codereview backlog -- PMM

4 years

[CI-NOTIFY]: TCWG Bisect tcwg_gcc_bootstrap/master-arm-bootstrap_debug - Build # 2 - Successful!

by ci_notify＠linaro.org

Successfully identified regression in *gcc* in CI configuration tcwg_gcc_bootstrap/master-arm-bootstrap_debug. So far, this commit has regressed CI configurations: - tcwg_gcc_bootstrap/master-arm-bootstrap_debug Culprit: <cut> commit 1d244020246cb155e4de62ca3b302b920a1f513f Author: Roger Sayle <roger(a)nextmovesoftware.com> Date: Mon Aug 23 12:37:04 2021 +0100 Fold sign of LSHIFT_EXPR to eliminate no-op conversions. This short patch teaches fold that it is "safe" to change the sign of a left shift, to reduce the number of type conversions in gimple. As an example: unsigned int foo(unsigned int i) { return (int)i << 8; } is currently optimized to: unsigned int foo (unsigned int i) { int i.0_1; int _2; unsigned int _4; <bb 2> [local count: 1073741824]: i.0_1 = (int) i_3(D); _2 = i.0_1 << 8; _4 = (unsigned int) _2; return _4; } with this patch, this now becomes: unsigned int foo (unsigned int i) { unsigned int _2; <bb 2> [local count: 1073741824]: _2 = i_1(D) << 8; return _2; } which generates exactly the same assembly language. Aside from the reduced memory usage, the real benefit is that no-op conversions tend to interfere with many folding optimizations. For example, unsigned int bar(unsigned char i) { return (i ^ (i<<16)) | (i<<8); } currently gets (tangled in conversions and) optimized to: unsigned int bar (unsigned char i) { unsigned int _1; unsigned int _2; int _3; int _4; unsigned int _6; unsigned int _8; <bb 2> [local count: 1073741824]: _1 = (unsigned int) i_5(D); _2 = _1 * 65537; _3 = (int) i_5(D); _4 = _3 << 8; _8 = (unsigned int) _4; _6 = _2 | _8; return _6; } but with this patch, bar now optimizes down to: unsigned int bar(unsigned char i) { unsigned int _1; unsigned int _4; <bb 2> [local count: 1073741824]: _1 = (unsigned int) i_3(D); _4 = _1 * 65793; return _4; } 2021-08-23 Roger Sayle <roger(a)nextmovesoftware.com> gcc/ChangeLog * match.pd (shift transformations): Change the sign of an LSHIFT_EXPR if it reduces the number of explicit conversions. gcc/testsuite/ChangeLog * gcc.dg/fold-convlshift-1.c: New test case. * gcc.dg/fold-convlshift-2.c: New test case. </cut> Results regressed to (for first_bad == 1d244020246cb155e4de62ca3b302b920a1f513f) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # First few build errors in logs: # 00:06:26 make[3]: [armv8l-unknown-linux-gnueabihf/bits/largefile-config.h] Error 1 (ignored) # 00:25:39 make[3]: [armv8l-unknown-linux-gnueabihf/bits/largefile-config.h] Error 1 (ignored) # 00:29:38 /home/tcwg-buildslave/workspace/tcwg_gnu_8/abe/snapshots/gcc.git~master/gcc/bitmap.h:357:13: error: type mismatch in ‘lshift_expr’ # 00:29:38 /home/tcwg-buildslave/workspace/tcwg_gnu_8/abe/snapshots/gcc.git~master/gcc/bitmap.h:357:13: internal compiler error: ‘verify_gimple’ failed # 00:29:38 make[3]: *** [bitmap.o] Error 1 # 00:34:06 make[2]: *** [all-stage3-gcc] Error 2 # 00:34:06 make[1]: *** [stage3-bubble] Error 2 # 00:34:07 make: *** [all] Error 2 from (for last_good == b320edc0c29c838b0090c3c9be14187d132f73f2) # reset_artifacts: -10 # true: 0 # build_abe binutils: 1 # build_abe bootstrap_debug: 2 Artifacts of last_good build: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-arm-bootstrap_de… Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-arm-bootstrap_de… Build top page/logs: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-arm-bootstrap_de… Configuration details: Reproduce builds: <cut> mkdir investigate-gcc-1d244020246cb155e4de62ca3b302b920a1f513f cd investigate-gcc-1d244020246cb155e4de62ca3b302b920a1f513f git clone https://git.linaro.org/toolchain/jenkins-scripts mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-arm-bootstrap_de… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-arm-bootstrap_de… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-arm-bootstrap_de… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_gnu-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gcc/ ./ ./bisect/baseline/ cd gcc # Reproduce first_bad build git checkout --detach 1d244020246cb155e4de62ca3b302b920a1f513f ../artifacts/test.sh # Reproduce last_good build git checkout --detach b320edc0c29c838b0090c3c9be14187d132f73f2 ../artifacts/test.sh cd .. </cut> History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/… Artifacts: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-arm-bootstrap_de… Build log: https://ci.linaro.org/job/tcwg_gcc_bootstrap-bisect-master-arm-bootstrap_de… Full commit (up to 1000 lines): <cut> commit 1d244020246cb155e4de62ca3b302b920a1f513f Author: Roger Sayle <roger(a)nextmovesoftware.com> Date: Mon Aug 23 12:37:04 2021 +0100 Fold sign of LSHIFT_EXPR to eliminate no-op conversions. This short patch teaches fold that it is "safe" to change the sign of a left shift, to reduce the number of type conversions in gimple. As an example: unsigned int foo(unsigned int i) { return (int)i << 8; } is currently optimized to: unsigned int foo (unsigned int i) { int i.0_1; int _2; unsigned int _4; <bb 2> [local count: 1073741824]: i.0_1 = (int) i_3(D); _2 = i.0_1 << 8; _4 = (unsigned int) _2; return _4; } with this patch, this now becomes: unsigned int foo (unsigned int i) { unsigned int _2; <bb 2> [local count: 1073741824]: _2 = i_1(D) << 8; return _2; } which generates exactly the same assembly language. Aside from the reduced memory usage, the real benefit is that no-op conversions tend to interfere with many folding optimizations. For example, unsigned int bar(unsigned char i) { return (i ^ (i<<16)) | (i<<8); } currently gets (tangled in conversions and) optimized to: unsigned int bar (unsigned char i) { unsigned int _1; unsigned int _2; int _3; int _4; unsigned int _6; unsigned int _8; <bb 2> [local count: 1073741824]: _1 = (unsigned int) i_5(D); _2 = _1 * 65537; _3 = (int) i_5(D); _4 = _3 << 8; _8 = (unsigned int) _4; _6 = _2 | _8; return _6; } but with this patch, bar now optimizes down to: unsigned int bar(unsigned char i) { unsigned int _1; unsigned int _4; <bb 2> [local count: 1073741824]: _1 = (unsigned int) i_3(D); _4 = _1 * 65793; return _4; } 2021-08-23 Roger Sayle <roger(a)nextmovesoftware.com> gcc/ChangeLog * match.pd (shift transformations): Change the sign of an LSHIFT_EXPR if it reduces the number of explicit conversions. gcc/testsuite/ChangeLog * gcc.dg/fold-convlshift-1.c: New test case. * gcc.dg/fold-convlshift-2.c: New test case. --- gcc/match.pd | 9 +++++++++ gcc/testsuite/gcc.dg/fold-convlshift-1.c | 20 ++++++++++++++++++++ gcc/testsuite/gcc.dg/fold-convlshift-2.c | 20 ++++++++++++++++++++ 3 files changed, 49 insertions(+) diff --git a/gcc/match.pd b/gcc/match.pd index 0fcfd0ea62c..978a1b0172e 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -3385,6 +3385,15 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) (if (integer_zerop (@2) || integer_all_onesp (@2)) (cmp @0 @2))))) +/* Both signed and unsigned lshift produce the same result, so use + the form that minimizes the number of conversions. */ +(simplify + (convert (lshift:s@0 (convert:s@1 @2) INTEGER_CST@3)) + (if (tree_nop_conversion_p (type, TREE_TYPE (@0)) + && INTEGRAL_TYPE_P (TREE_TYPE (@2)) + && TYPE_PRECISION (TREE_TYPE (@2)) <= TYPE_PRECISION (type)) + (lshift (convert @2) @3))) + /* Simplifications of conversions. */ /* Basic strip-useless-type-conversions / strip_nops. */ diff --git a/gcc/testsuite/gcc.dg/fold-convlshift-1.c b/gcc/testsuite/gcc.dg/fold-convlshift-1.c new file mode 100644 index 00000000000..b6f57f81e72 --- /dev/null +++ b/gcc/testsuite/gcc.dg/fold-convlshift-1.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ + +unsigned int foo(unsigned int i) +{ + int t1 = i; + int t2 = t1 << 8; + return t2; +} + +int bar(int i) +{ + unsigned int t1 = i; + unsigned int t2 = t1 << 8; + return t2; +} + +/* { dg-final { scan-tree-dump-not "\$int\$" "optimized" } } */ +/* { dg-final { scan-tree-dump-not "\$unsigned int\$" "optimized" } } */ + diff --git a/gcc/testsuite/gcc.dg/fold-convlshift-2.c b/gcc/testsuite/gcc.dg/fold-convlshift-2.c new file mode 100644 index 00000000000..f21358c4584 --- /dev/null +++ b/gcc/testsuite/gcc.dg/fold-convlshift-2.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ + +unsigned int foo(unsigned char c) +{ + int t1 = c; + int t2 = t1 << 8; + return t2; +} + +int bar(unsigned char c) +{ + unsigned int t1 = c; + unsigned int t2 = t1 << 8; + return t2; +} + +/* { dg-final { scan-tree-dump-times "\$int\$" 1 "optimized" } } */ +/* { dg-final { scan-tree-dump-times "\$unsigned int\$" 1 "optimized" } } */ + </cut>

4 years

[CI-NOTIFY]: TCWG Bisect tcwg_bmk_tk1/llvm-release-arm-spec2k6-O2_LTO - Build # 14 - Successful!

by ci_notify＠linaro.org

Successfully identified regression in *llvm* in CI configuration tcwg_bmk_llvm_tk1/llvm-release-arm-spec2k6-O2_LTO. So far, this commit has regressed CI configurations: - tcwg_bmk_llvm_tk1/llvm-release-arm-spec2k6-O2_LTO Culprit: <cut> commit efa7df1682c2859dabe3646ee7dc01e68629417f Author: Gabor Marton <gabor.marton(a)ericsson.com> Date: Thu Mar 25 15:40:26 2021 +0100 [Analyzer] Track RValue expressions It makes sense to track rvalue expressions in the case of special concrete integer values. The most notable special value is zero (later we may find other values). By tracking the origin of 0, we can provide a better explanation for users e.g. in case of division by 0 warnings. When the divisor is a product of a multiplication then now we can show which operand (or both) was (were) zero and why. Differential Revision: https://reviews.llvm.org/D99344 </cut> Results regressed to (for first_bad == efa7df1682c2859dabe3646ee7dc01e68629417f) # reset_artifacts: -10 # build_abe binutils: -9 # build_abe stage1 -- --set gcc_override_configure=--with-mode=arm --set gcc_override_configure=--disable-libsanitizer: -8 # build_abe linux: -7 # build_abe glibc: -6 # build_abe stage2 -- --set gcc_override_configure=--with-mode=arm --set gcc_override_configure=--disable-libsanitizer: -5 # build_llvm true: -3 # true: 0 # benchmark -- -O2_LTO_marm artifacts/build-efa7df1682c2859dabe3646ee7dc01e68629417f/results_id: 1 # 456.hmmer,hmmer_base.default regressed by 103 from (for last_good == 1696b8ae96b2d8bcbf90894bd344a8a090f43c84) # reset_artifacts: -10 # build_abe binutils: -9 # build_abe stage1 -- --set gcc_override_configure=--with-mode=arm --set gcc_override_configure=--disable-libsanitizer: -8 # build_abe linux: -7 # build_abe glibc: -6 # build_abe stage2 -- --set gcc_override_configure=--with-mode=arm --set gcc_override_configure=--disable-libsanitizer: -5 # build_llvm true: -3 # true: 0 # benchmark -- -O2_LTO_marm artifacts/build-1696b8ae96b2d8bcbf90894bd344a8a090f43c84/results_id: 1 Artifacts of last_good build: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-release… Results ID of last_good: tk1_32/tcwg_bmk_llvm_tk1/bisect-llvm-release-arm-spec2k6-O2_LTO/4320 Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-release… Results ID of first_bad: tk1_32/tcwg_bmk_llvm_tk1/bisect-llvm-release-arm-spec2k6-O2_LTO/4322 Build top page/logs: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-release… Configuration details: Reproduce builds: <cut> mkdir investigate-llvm-efa7df1682c2859dabe3646ee7dc01e68629417f cd investigate-llvm-efa7df1682c2859dabe3646ee7dc01e68629417f git clone https://git.linaro.org/toolchain/jenkins-scripts mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-release… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-release… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-release… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_bmk-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /llvm/ ./ ./bisect/baseline/ cd llvm # Reproduce first_bad build git checkout --detach efa7df1682c2859dabe3646ee7dc01e68629417f ../artifacts/test.sh # Reproduce last_good build git checkout --detach 1696b8ae96b2d8bcbf90894bd344a8a090f43c84 ../artifacts/test.sh cd .. </cut> History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/… Artifacts: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-release… Build log: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tk1-llvm-release… Full commit (up to 1000 lines): <cut> commit efa7df1682c2859dabe3646ee7dc01e68629417f Author: Gabor Marton <gabor.marton(a)ericsson.com> Date: Thu Mar 25 15:40:26 2021 +0100 [Analyzer] Track RValue expressions It makes sense to track rvalue expressions in the case of special concrete integer values. The most notable special value is zero (later we may find other values). By tracking the origin of 0, we can provide a better explanation for users e.g. in case of division by 0 warnings. When the divisor is a product of a multiplication then now we can show which operand (or both) was (were) zero and why. Differential Revision: https://reviews.llvm.org/D99344 --- .../StaticAnalyzer/Core/BugReporterVisitors.cpp | 43 ++++++++++ clang/test/Analysis/division-by-zero-track-zero.c | 11 +++ .../test/Analysis/division-by-zero-track-zero.cpp | 98 ++++++++++++++++++++++ clang/test/Analysis/nullptr.cpp | 2 +- 4 files changed, 153 insertions(+), 1 deletion(-) diff --git a/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp b/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp index 0edd6e3f731b..fd334b0bc9c3 100644 --- a/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp +++ b/clang/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp @@ -1924,6 +1924,44 @@ static const ExplodedNode* findNodeForExpression(const ExplodedNode *N, return N; } +/// Attempts to add visitors to track an RValue expression back to its point of +/// origin. Works similarly to trackExpressionValue, but accepts only RValues. +static void trackRValueExpression(const ExplodedNode *InputNode, const Expr *E, + PathSensitiveBugReport &report, + bugreporter::TrackingKind TKind, + bool EnableNullFPSuppression) { + assert(E->isRValue() && "The expression is not an rvalue!"); + const ExplodedNode *RVNode = findNodeForExpression(InputNode, E); + if (!RVNode) + return; + ProgramStateRef RVState = RVNode->getState(); + SVal V = RVState->getSValAsScalarOrLoc(E, RVNode->getLocationContext()); + const auto *BO = dyn_cast<BinaryOperator>(E); + if (!BO) + return; + if (!V.isZeroConstant()) + return; + if (!BO->isMultiplicativeOp()) + return; + + SVal RHSV = RVState->getSVal(BO->getRHS(), RVNode->getLocationContext()); + SVal LHSV = RVState->getSVal(BO->getLHS(), RVNode->getLocationContext()); + + // Track both LHS and RHS of a multiplication. + if (BO->getOpcode() == BO_Mul) { + if (LHSV.isZeroConstant()) + trackExpressionValue(InputNode, BO->getLHS(), report, TKind, + EnableNullFPSuppression); + if (RHSV.isZeroConstant()) + trackExpressionValue(InputNode, BO->getRHS(), report, TKind, + EnableNullFPSuppression); + } else { // Track only the LHS of a division or a modulo. + if (LHSV.isZeroConstant()) + trackExpressionValue(InputNode, BO->getLHS(), report, TKind, + EnableNullFPSuppression); + } +} + bool bugreporter::trackExpressionValue(const ExplodedNode *InputNode, const Expr *E, PathSensitiveBugReport &report, @@ -2069,6 +2107,11 @@ bool bugreporter::trackExpressionValue(const ExplodedNode *InputNode, loc::MemRegionVal(RegionRVal), /*assumption=*/false)); } } + + if (Inner->isRValue()) + trackRValueExpression(LVNode, Inner, report, TKind, + EnableNullFPSuppression); + return true; } diff --git a/clang/test/Analysis/division-by-zero-track-zero.c b/clang/test/Analysis/division-by-zero-track-zero.c new file mode 100644 index 000000000000..f6b2a78ed701 --- /dev/null +++ b/clang/test/Analysis/division-by-zero-track-zero.c @@ -0,0 +1,11 @@ +// RUN: %clang_analyze_cc1 -analyzer-checker=core \ +// RUN: -analyzer-output=text \ +// RUN: -verify %s + +int track_mul_lhs_0(int x, int y) { + int p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + int div = p0 * y; // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} +} diff --git a/clang/test/Analysis/division-by-zero-track-zero.cpp b/clang/test/Analysis/division-by-zero-track-zero.cpp new file mode 100644 index 000000000000..c4b9550c76c0 --- /dev/null +++ b/clang/test/Analysis/division-by-zero-track-zero.cpp @@ -0,0 +1,98 @@ +// RUN: %clang_analyze_cc1 -analyzer-checker=core \ +// RUN: -analyzer-output=text \ +// RUN: -verify %s + +namespace test_tracking_of_lhs_multiplier { + int f(int x, int y) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + int div = p0 * y; // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_of_lhs_multiplier + +namespace test_tracking_of_rhs_multiplier { + int f(int x, int y) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + int div = y * p0; // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_of_rhs_multiplier + +namespace test_tracking_of_nested_multiplier { + int f(int x, int y, int z) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + int div = y*z*p0; // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_of_nested_multiplier + +namespace test_tracking_through_multiple_stmts { + int f(int x, int y) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} + bool p1 = p0 ? 0 : 1; // expected-note {{'p0' is false}} \ + // expected-note {{'?' condition is false}} + bool p2 = 1 - p1; // expected-note {{'p2' initialized to 0}} + int div = p2 * y; // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_through_multiple_stmts + +namespace test_tracking_both_lhs_and_rhs { + int f(int x, int y) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + bool p1 = y < 0; // expected-note {{Assuming 'y' is >= 0}} \ + // expected-note {{'p1' initialized to 0}} + int div = p0 * p1; // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_both_lhs_and_rhs + +namespace test_tracking_of_multiplier_and_parens { + int f(int x, int y, int z) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + int div = y*(z*p0); // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_of_multiplier_and_parens + +namespace test_tracking_of_divisible { + int f(int x, int y) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + int div = p0 / y; // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_of_divisible + +namespace test_tracking_of_modulo { + int f(int x, int y) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + int div = p0 % y; // expected-note {{'div' initialized to 0}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_of_modulo + +namespace test_tracking_of_assignment { + int f(int x) { + bool p0 = x < 0; // expected-note {{Assuming 'x' is >= 0}} \ + // expected-note {{'p0' initialized to 0}} + int div = 1; + div *= p0; // expected-note {{The value 0 is assigned to 'div'}} + return 1 / div; // expected-note {{Division by zero}} \ + // expected-warning {{Division by zero}} + } +} // namespace test_tracking_of_assignment diff --git a/clang/test/Analysis/nullptr.cpp b/clang/test/Analysis/nullptr.cpp index e9b975c148aa..24b574a4ccfe 100644 --- a/clang/test/Analysis/nullptr.cpp +++ b/clang/test/Analysis/nullptr.cpp @@ -64,7 +64,7 @@ void zoo1backwards() { typedef __INTPTR_TYPE__ intptr_t; void zoo1multiply() { - char **p = 0; // FIXME-should-be-note:{{'p' initialized to a null pointer value}} + char **p = 0; // expected-note{{'p' initialized to a null pointer value}} delete *((char **)((intptr_t)p * 2)); // expected-warning{{Dereference of null pointer}} // expected-note@-1{{Dereference of null pointer}} } </cut>

4 years

Moving to llvm@lists.linux.dev

by Nathan Chancellor

Hi everyone, We are shifting the ClangBuiltLinux mailing list from clang-built-linux(a)googlegroups.com to llvm(a)lists.linux.dev. Google Groups has served us well but moving to lists.linux.dev allows for easier archival (as we will be on lore.kernel.org automatically) and allows for people to subscribe to us easier, as they only need an email address, rather than a Google account. Please follow these directions to subscribe to the new mailing list: https://subspace.kernel.org/index.html#subscribing Some more information about lists.linux.dev: https://www.kernel.org/lists-linux-dev.html https://subspace.kernel.org/lists.linux.dev.html I have added CI maintainers/mailing lists that send us regular reports to this announcement. Please continue to send us emails about build results, just switch the email from clang-built-linux(a)googlegroups.com to llvm(a)lists.linux.dev so that they get archived as a part of lore and can be easily searched, especially with the upcoming https://x-lore.kernel.org/all/. I will send a patch shortly to update MAINTAINERS. Cheers, Nathan

4 years

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

linaro-toolchain