[TCWG CI] Regression caused by llvm:4389a413e2129d7d55ee779638b649aa852b6f8a

13 Sep 2021

Identified regression caused by *llvm:4389a413e2129d7d55ee779638b649aa852b6f8a*:
commit 4389a413e2129d7d55ee779638b649aa852b6f8a
Author: Zahira Ammarguellat zahira.ammarguellat@intel.com
Revert "[clang][fpenv][patch] Change clang option -ffp-model=precise to select ffp-contract=on"
Results regressed to (for first_bad == 4389a413e2129d7d55ee779638b649aa852b6f8a)
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_abe stage1 -- --set gcc_override_configure=--disable-libsanitizer:
-8
# build_abe linux:
-7
# build_abe glibc:
-6
# build_abe stage2 -- --set gcc_override_configure=--disable-libsanitizer:
-5
# build_llvm true:
-3
# true:
0
# benchmark -- -Oz_LTO artifacts/build-4389a413e2129d7d55ee779638b649aa852b6f8a/results_id:
1
# 470.lbm,lbm_base.default                                      regressed by 104
from (for last_good == dfce2909ee1ea1523ec27b834a0e56429e9c2beb)
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_abe stage1 -- --set gcc_override_configure=--disable-libsanitizer:
-8
# build_abe linux:
-7
# build_abe glibc:
-6
# build_abe stage2 -- --set gcc_override_configure=--disable-libsanitizer:
-5
# build_llvm true:
-3
# true:
0
# benchmark -- -Oz_LTO artifacts/build-dfce2909ee1ea1523ec27b834a0e56429e9c2beb/results_id:
1
This commit has regressed these CI configurations:
 - tcwg_bmk_llvm_apm/llvm-master-aarch64-spec2k6-Oz_LTO
Artifacts of last_good build: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-a...
Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-a...
Even more details: https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-a...
Reproduce builds:
<cut>
mkdir investigate-llvm-4389a413e2129d7d55ee779638b649aa852b6f8a
cd investigate-llvm-4389a413e2129d7d55ee779638b649aa852b6f8a
# Fetch scripts
git clone https://git.linaro.org/toolchain/jenkins-scripts
# Fetch manifests and test.sh script
mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-a... --fail
curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-a... --fail
curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-a... --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 4389a413e2129d7d55ee779638b649aa852b6f8a
../artifacts/test.sh
# Reproduce last_good build
git checkout --detach dfce2909ee1ea1523ec27b834a0e56429e9c2beb
../artifacts/test.sh
cd ..
</cut>
Full commit (up to 1000 lines):
<cut>
commit 4389a413e2129d7d55ee779638b649aa852b6f8a
Author: Zahira Ammarguellat zahira.ammarguellat@intel.com
Date:   Fri Aug 6 12:01:47 2021 -0700
Revert "[clang][fpenv][patch] Change clang option -ffp-model=precise to select ffp-contract=on"
This reverts commit 48ad446a0fb2c9b98cb7047e4daf8a84c29cef8f.
---
 clang/docs/UsersManual.rst               | 48 ++-----------------------
 clang/lib/Driver/ToolChains/Clang.cpp    | 33 ++++++++---------
 clang/test/CodeGen/ffp-contract-option.c | 47 +++---------------------
 clang/test/CodeGen/ppc-emmintrin.c       |  4 +--
 clang/test/CodeGen/ppc-xmmintrin.c       |  4 +--
 clang/test/Driver/fp-model.c             | 61 +++++++++++++++-----------------
 6 files changed, 58 insertions(+), 139 deletions(-)

diff --git a/clang/docs/UsersManual.rst b/clang/docs/UsersManual.rst
index 838669794ea8..980d0ab45975 100644
--- a/clang/docs/UsersManual.rst
+++ b/clang/docs/UsersManual.rst
@@ -1260,50 +1260,8 @@ installed.
 Controlling Floating Point Behavior
 -----------------------------------
-Clang provides a number of ways to control floating point behavior, including
-with command line options and source pragmas. This section
-describes the various floating point semantic modes and the corresponding options.
-
-.. csv-table:: Floating Point Semantic Modes
-  :header: "Mode", "Values"
-  :widths: 15, 30, 30
-
-  "except_behavior", "{ignore, strict, may_trap}", "ffp-exception-behavior"
-  "fenv_access", "{off, on}", "(none)"
-  "rounding_mode", "{dynamic, tonearest, downward, upward, towardzero}", "frounding-math"
-  "contract", "{on, off, fast}", "ffp-contract"
-  "denormal_fp_math", "{IEEE, PreserveSign, PositiveZero}", "fdenormal-fp-math"
-  "denormal_fp32_math", "{IEEE, PreserveSign, PositiveZero}", "fdenormal-fp-math-fp32"
-  "support_math_errno", "{on, off}", "fmath-errno"
-  "no_honor_nans", "{on, off}", "fhonor-nans"
-  "no_honor_infinities", "{on, off}", "fhonor-infinities"
-  "no_signed_zeros", "{on, off}", "fsigned-zeros"
-  "allow_reciprocal", "{on, off}", "freciprocal-math"
-  "allow_approximate_fns", "{on, off}", "(none)"
-  "allow_reassociation", "{on, off}", "fassociative-math"
-
-
-This table describes the option settings that correspond to the three
-floating point semantic models: precise (the default), strict, and fast.
-
-
-.. csv-table:: Floating Point Models
-  :header: "Mode", "Precise", "Strict", "Fast"
-  :widths: 25, 15, 15, 15
-
-  "except_behavior", "ignore", "strict", "ignore"
-  "fenv_access", "off", "on", "off"
-  "rounding_mode", "tonearest", "dynamic", "tonearest"
-  "contract", "on", "off", "fast"
-  "denormal_fp_math", "IEEE", "IEEE", "PreserveSign"
-  "denormal_fp32_math", "IEEE","IEEE", "PreserveSign"
-  "support_math_errno", "on", "on", "off"
-  "no_honor_nans", "off", "off", "on"
-  "no_honor_infinities", "off", "off", "on"
-  "no_signed_zeros", "off", "off", "on"
-  "allow_reciprocal", "off", "off", "on"
-  "allow_approximate_fns", "off", "off", "on"
-  "allow_reassociation", "off", "off", "on"
+Clang provides a number of ways to control floating point behavior. The options
+are listed below.
.. option:: -ffast-math
@@ -1498,7 +1456,7 @@ Note that floating-point operations performed as part of constant initialization
    and ``fast``.
    Details:
-   * ``precise`` Disables optimizations that are not value-safe on floating-point data, although FP contraction (FMA) is enabled (``-ffp-contract=on``).  This is the default behavior.
+   * ``precise`` Disables optimizations that are not value-safe on floating-point data, although FP contraction (FMA) is enabled (``-ffp-contract=fast``).  This is the default behavior.
    * ``strict`` Enables ``-frounding-math`` and ``-ffp-exception-behavior=strict``, and disables contractions (FMA).  All of the ``-ffast-math`` enablements are disabled. Enables ``STDC FENV_ACCESS``: by default ``FENV_ACCESS`` is disabled. This option setting behaves as though ``#pragma STDC FENV_ACESS ON`` appeared at the top of the source file.
    * ``fast`` Behaves identically to specifying both ``-ffast-math`` and ``ffp-contract=fast``
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 1c79640be80f..96bbc0250126 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -2641,7 +2641,7 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
llvm::DenormalMode DenormalFPMath = DefaultDenormalFPMath;
   llvm::DenormalMode DenormalFP32Math = DefaultDenormalFP32Math;
-  StringRef FPContract = "on";
+  StringRef FPContract = "";
   bool StrictFPModel = false;
@@ -2666,7 +2666,7 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
       ReciprocalMath = false;
       SignedZeros = true;
       // -fno_fast_math restores default denormal and fpcontract handling
-      FPContract = "on";
+      FPContract = "";
       DenormalFPMath = llvm::DenormalMode::getIEEE();
// FIXME: The target may have picked a non-IEEE default mode here based on
@@ -2686,18 +2686,20 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
       // ffp-model= is a Driver option, it is entirely rewritten into more
       // granular options before being passed into cc1.
       // Use the gcc option in the switch below.
-      if (!FPModel.empty() && !FPModel.equals(Val))
+      if (!FPModel.empty() && !FPModel.equals(Val)) {
         D.Diag(clang::diag::warn_drv_overriding_flag_option)
           << Args.MakeArgString("-ffp-model=" + FPModel)
           << Args.MakeArgString("-ffp-model=" + Val);
+        FPContract = "";
+      }
       if (Val.equals("fast")) {
         optID = options::OPT_ffast_math;
         FPModel = Val;
-        FPContract = Val;
+        FPContract = "fast";
       } else if (Val.equals("precise")) {
         optID = options::OPT_ffp_contract;
         FPModel = Val;
-        FPContract = "on";
+        FPContract = "fast";
         PreciseFPModel = true;
       } else if (Val.equals("strict")) {
         StrictFPModel = true;
@@ -2783,11 +2785,9 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
     case options::OPT_ffp_contract: {
       StringRef Val = A->getValue();
       if (PreciseFPModel) {
-        // When -ffp-model=precise is seen on the command line,
-        // the boolean PreciseFPModel is set to true which indicates
-        // "the current option is actually PreciseFPModel". The optID
-        // is changed to OPT_ffp_contract and FPContract is set to "on".
-        // the argument Val string is "precise": it shouldn't be checked.
+        // -ffp-model=precise enables ffp-contract=fast as a side effect
+        // the FPContract value has already been set to a string literal
+        // and the Val string isn't a pertinent value.
         ;
       } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off"))
         FPContract = Val;
@@ -2897,17 +2897,18 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
       // -fno_fast_math restores default denormal and fpcontract handling
       DenormalFPMath = DefaultDenormalFPMath;
       DenormalFP32Math = llvm::DenormalMode::getIEEE();
-      FPContract = "on";
+      FPContract = "";
       break;
     }
     if (StrictFPModel) {
       // If -ffp-model=strict has been specified on command line but
       // subsequent options conflict then emit warning diagnostic.
-      if (HonorINFs && HonorNaNs && !AssociativeMath && !ReciprocalMath &&
-          SignedZeros && TrappingMath && RoundingFPMath &&
-          DenormalFPMath == llvm::DenormalMode::getIEEE() &&
-          DenormalFP32Math == llvm::DenormalMode::getIEEE() &&
-          FPContract.equals("off"))
+      if (HonorINFs && HonorNaNs &&
+        !AssociativeMath && !ReciprocalMath &&
+        SignedZeros && TrappingMath && RoundingFPMath &&
+        (FPContract.equals("off") || FPContract.empty()) &&
+        DenormalFPMath == llvm::DenormalMode::getIEEE() &&
+        DenormalFP32Math == llvm::DenormalMode::getIEEE())
         // OK: Current Arg doesn't conflict with -ffp-model=strict
         ;
       else {
diff --git a/clang/test/CodeGen/ffp-contract-option.c b/clang/test/CodeGen/ffp-contract-option.c
index efc72c2b5461..52b750795940 100644
--- a/clang/test/CodeGen/ffp-contract-option.c
+++ b/clang/test/CodeGen/ffp-contract-option.c
@@ -1,46 +1,9 @@
-// RUN: %clang_cc1 -O3 -ffp-contract=fast -triple=aarch64-apple-darwin -S -o - %s | FileCheck --check-prefix=CHECK-FMADD %s
+// RUN: %clang_cc1 -O3 -ffp-contract=fast -triple=aarch64-apple-darwin -S -o - %s | FileCheck %s
 // REQUIRES: aarch64-registered-target
float fma_test1(float a, float b, float c) {
-// CHECK-FMADD: fmadd
- float x = a * b;
- float y = x + c;
- return y;
-}
-
-// RUN: %clang_cc1 -triple=x86_64 %s -emit-llvm -o - \
-// RUN:| FileCheck --check-prefix=CHECK-DEFAULT %s
-//
-// RUN: %clang_cc1 -triple=x86_64 -ffp-contract=off %s -emit-llvm -o - \
-// RUN:| FileCheck --check-prefix=CHECK-DEFAULT %s
-// RUN: %clang_cc1 -triple=x86_64 -ffp-contract=on %s -emit-llvm -o - \
-// RUN:| FileCheck --check-prefix=CHECK-ON %s
-// RUN: %clang_cc1 -triple=x86_64 -ffp-contract=fast %s -emit-llvm -o - \
-// RUN:| FileCheck --check-prefix=CHECK-CONTRACTFAST %s
-//
-// RUN: %clang_cc1 -triple=x86_64 -ffast-math %s -emit-llvm -o - \
-// RUN:| FileCheck --check-prefix=CHECK-DEFAULTFAST %s
-// RUN: %clang_cc1 -triple=x86_64 -ffast-math -ffp-contract=off %s -emit-llvm -o - \
-// RUN:| FileCheck --check-prefix=CHECK-DEFAULTFAST %s
-// RUN: %clang_cc1 -triple=x86_64 -ffast-math -ffp-contract=on %s -emit-llvm -o - \
-// RUN:| FileCheck --check-prefix=CHECK-ONFAST %s
-// RUN: %clang_cc1 -triple=x86_64 -ffast-math -ffp-contract=fast %s -emit-llvm -o - \
-// RUN:| FileCheck --check-prefix=CHECK-FASTFAST %s
-float mymuladd( float x, float y, float z ) {
-  return x * y + z;
-  // CHECK-DEFAULT: = fmul float
-  // CHECK-DEFAULT: = fadd float
-  
-  // CHECK-ON: = call float @llvm.fmuladd.f32
- 
-  // CHECK-CONTRACTFAST: = fmul contract float
-  // CHECK-CONTRACTFAST: = fadd contract float
-
-  // CHECK-DEFAULTFAST: = fmul reassoc nnan ninf nsz arcp afn float
-  // CHECK-DEFAULTFAST: = fadd reassoc nnan ninf nsz arcp afn float
-
-  // CHECK-ONFAST: = call reassoc nnan ninf nsz arcp afn float @llvm.fmuladd.f32
-
-  // CHECK-FASTFAST: = fmul fast float
-  // CHECK-FASTFAST: = fadd fast float
+// CHECK: fmadd
+  float x = a * b;
+  float y = x + c;
+  return y;
 }
diff --git a/clang/test/CodeGen/ppc-emmintrin.c b/clang/test/CodeGen/ppc-emmintrin.c
index 4a246ff92d76..fa3801f50a01 100644
--- a/clang/test/CodeGen/ppc-emmintrin.c
+++ b/clang/test/CodeGen/ppc-emmintrin.c
@@ -2,9 +2,9 @@
 // REQUIRES: powerpc-registered-target
// RUN: %clang -S -emit-llvm -target powerpc64-unknown-linux-gnu -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
-// RUN:  -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-BE
+// RUN:  -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-BE
 // RUN: %clang -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
-// RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-LE
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-LE
// CHECK-BE-DAG: @_mm_movemask_pd.perm_mask = internal constant <4 x i32> <i32 -2139062144, i32 -2139062144, i32 -2139062144, i32 -2139078656>, align 16
 // CHECK-BE-DAG: @_mm_shuffle_epi32.permute_selectors = internal constant [4 x i32] [i32 66051, i32 67438087, i32 134810123, i32 202182159], align 4
diff --git a/clang/test/CodeGen/ppc-xmmintrin.c b/clang/test/CodeGen/ppc-xmmintrin.c
index a7f6ed6e0e67..d3f18bfbb1e5 100644
--- a/clang/test/CodeGen/ppc-xmmintrin.c
+++ b/clang/test/CodeGen/ppc-xmmintrin.c
@@ -2,11 +2,11 @@
 // REQUIRES: powerpc-registered-target
// RUN: %clang -S -emit-llvm -target powerpc64-unknown-linux-gnu -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
-// RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-BE
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-BE
 // RUN: %clang -x c++ -fsyntax-only -target powerpc64-unknown-linux-gnu -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns
 // RUN: %clang -S -emit-llvm -target powerpc64le-unknown-linux-gnu -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
-// RUN:   -ffp-contract=off -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-LE
+// RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns -o - | llvm-cxxfilt -n | FileCheck %s --check-prefixes=CHECK,CHECK-LE
 // RUN: %clang -x c++ -fsyntax-only -target powerpc64le-unknown-linux-gnu -mcpu=pwr8 -ffreestanding -DNO_WARN_X86_INTRINSICS %s \
 // RUN:   -fno-discard-value-names -mllvm -disable-llvm-optzns
diff --git a/clang/test/Driver/fp-model.c b/clang/test/Driver/fp-model.c
index c6d683e25c0b..5fa9d110dd83 100644
--- a/clang/test/Driver/fp-model.c
+++ b/clang/test/Driver/fp-model.c
@@ -1,90 +1,88 @@
 // Test that incompatible combinations of -ffp-model= options
 // and other floating point options get a warning diagnostic.
+//
+// REQUIRES: clang-driver
-// RUN: %clang -target x86_64 -### -ffp-model=fast -ffp-contract=off -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=fast -ffp-contract=off -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN %s
 // WARN: warning: overriding '-ffp-model=fast' option with '-ffp-contract=off' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=fast -ffp-contract=on -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=fast -ffp-contract=on -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN1 %s
 // WARN1: warning: overriding '-ffp-model=fast' option with '-ffp-contract=on' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -fassociative-math -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -fassociative-math -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN2 %s
 // WARN2: warning: overriding '-ffp-model=strict' option with '-fassociative-math' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -ffast-math -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -ffast-math -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN3 %s
 // WARN3: warning: overriding '-ffp-model=strict' option with '-ffast-math' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -ffinite-math-only -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -ffinite-math-only -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN4 %s
 // WARN4: warning: overriding '-ffp-model=strict' option with '-ffinite-math-only' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -ffp-contract=fast -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -ffp-contract=fast -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN5 %s
 // WARN5: warning: overriding '-ffp-model=strict' option with '-ffp-contract=fast' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -ffp-contract=fast -c %s 2>&1 \
-// RUN:   | FileCheck --check-prefix=WARN6 %s
-// WARN6: warning: overriding '-ffp-model=strict' option with '-ffp-contract=fast' [-Woverriding-t-option]
-
-// RUN: %clang -target x86_64 -### -ffp-model=strict -ffp-contract=on -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -ffp-contract=on -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN7 %s
 // WARN7: warning: overriding '-ffp-model=strict' option with '-ffp-contract=on' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -fno-honor-infinities -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -fno-honor-infinities -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN8 %s
 // WARN8: warning: overriding '-ffp-model=strict' option with '-fno-honor-infinities' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -fno-honor-nans -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -fno-honor-nans -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN9 %s
 // WARN9: warning: overriding '-ffp-model=strict' option with '-fno-honor-nans' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -fno-rounding-math -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -fno-rounding-math -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARNa %s
 // WARNa: warning: overriding '-ffp-model=strict' option with '-fno-rounding-math' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -fno-signed-zeros -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -fno-signed-zeros -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARNb %s
 // WARNb: warning: overriding '-ffp-model=strict' option with '-fno-signed-zeros' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -fno-trapping-math -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -fno-trapping-math -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARNc %s
 // WARNc: warning: overriding '-ffp-model=strict' option with '-fno-trapping-math' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -freciprocal-math -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -freciprocal-math -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARNd %s
 // WARNd: warning: overriding '-ffp-model=strict' option with '-freciprocal-math' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -funsafe-math-optimizations -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -funsafe-math-optimizations -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARNe %s
 // WARNe: warning: overriding '-ffp-model=strict' option with '-funsafe-math-optimizations' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -Ofast -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -Ofast -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARNf %s
 // WARNf: warning: overriding '-ffp-model=strict' option with '-Ofast' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -ffp-model=strict -fdenormal-fp-math=preserve-sign,preserve-sign -c %s 2>&1 \
+// RUN: %clang -### -ffp-model=strict -fdenormal-fp-math=preserve-sign,preserve-sign -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=WARN10 %s
 // WARN10: warning: overriding '-ffp-model=strict' option with '-fdenormal-fp-math=preserve-sign,preserve-sign' [-Woverriding-t-option]
-// RUN: %clang -target x86_64 -### -c %s 2>&1 \
+// RUN: %clang -### -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-NOROUND %s
 // CHECK-NOROUND: "-cc1"
 // CHECK-NOROUND: "-fno-rounding-math"
-// RUN: %clang -target x86_64 -### -frounding-math -c %s 2>&1 \
+// RUN: %clang -### -frounding-math -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-ROUND --implicit-check-not ffp-exception-behavior=strict %s
 // CHECK-ROUND: "-cc1"
 // CHECK-ROUND: "-frounding-math"
-// RUN: %clang -target x86_64 -### -ftrapping-math -c %s 2>&1 \
+// RUN: %clang -### -ftrapping-math -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-TRAP %s
 // CHECK-TRAP: "-cc1"
 // CHECK-TRAP: "-ffp-exception-behavior=strict"
-// RUN: %clang -target x86_64 -### -nostdinc -ffp-model=fast -c %s 2>&1 \
+// RUN: %clang -### -nostdinc -ffp-model=fast -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-FPM-FAST %s
 // CHECK-FPM-FAST: "-cc1"
 // CHECK-FPM-FAST: "-menable-no-infs"
@@ -98,35 +96,34 @@
 // CHECK-FPM-FAST: "-ffast-math"
 // CHECK-FPM-FAST: "-ffinite-math-only"
-// RUN: %clang -target x86_64 -### -nostdinc -ffp-model=precise -c %s 2>&1 \
+// RUN: %clang -### -nostdinc -ffp-model=precise -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-FPM-PRECISE %s
 // CHECK-FPM-PRECISE: "-cc1"
-// CHECK-FPM-PRECISE: "-ffp-contract=on"
+// CHECK-FPM-PRECISE: "-ffp-contract=fast"
 // CHECK-FPM-PRECISE: "-fno-rounding-math"
-// RUN: %clang -target x86_64 -### -nostdinc -ffp-model=strict -c %s 2>&1 \
+// RUN: %clang -### -nostdinc -ffp-model=strict -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-FPM-STRICT %s
 // CHECK-FPM-STRICT: "-cc1"
-// CHECK-FPM-STRICT: "-fmath-errno"
-// CHECK-FPM-STRICT: "-ffp-contract=off"
 // CHECK-FPM-STRICT: "-frounding-math"
 // CHECK-FPM-STRICT: "-ffp-exception-behavior=strict"
-// RUN: %clang -target x86_64 -### -nostdinc -ffp-exception-behavior=strict -c %s 2>&1 \
+// RUN: %clang -### -nostdinc -ffp-exception-behavior=strict -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-FEB-STRICT %s
 // CHECK-FEB-STRICT: "-cc1"
 // CHECK-FEB-STRICT: "-fno-rounding-math"
 // CHECK-FEB-STRICT: "-ffp-exception-behavior=strict"
-// RUN: %clang -target x86_64 -### -nostdinc -ffp-exception-behavior=maytrap -c %s 2>&1 \
+// RUN: %clang -### -nostdinc -ffp-exception-behavior=maytrap -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-FEB-MAYTRAP %s
 // CHECK-FEB-MAYTRAP: "-cc1"
 // CHECK-FEB-MAYTRAP: "-fno-rounding-math"
 // CHECK-FEB-MAYTRAP: "-ffp-exception-behavior=maytrap"
-// RUN: %clang -target x86_64 -### -nostdinc -ffp-exception-behavior=ignore -c %s 2>&1 \
+// RUN: %clang -### -nostdinc -ffp-exception-behavior=ignore -c %s 2>&1 \
 // RUN:   | FileCheck --check-prefix=CHECK-FEB-IGNORE %s
 // CHECK-FEB-IGNORE: "-cc1"
 // CHECK-FEB-IGNORE: "-fno-rounding-math"
 // CHECK-FEB-IGNORE: "-ffp-exception-behavior=ignore"
+
</cut>

    

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[TCWG CI] Regression caused by llvm:4389a413e2129d7d55ee779638b649aa852b6f8a