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from 5f29c3f582d Revert enabling MemorySSA. new f3edd69a916 Revert [MBP] Disable aggressive loop rotate in plain mode

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Summary of changes: lib/CodeGen/MachineBlockPlacement.cpp | 116 +- test/CodeGen/AArch64/cmpxchg-idioms.ll | 2 +- test/CodeGen/AArch64/tailmerging_in_mbp.ll | 5 +- test/CodeGen/AMDGPU/collapse-endcf.ll | 9 +- .../AMDGPU/divergent-branch-uniform-condition.ll | 48 +- test/CodeGen/AMDGPU/global_smrd_cfg.ll | 21 +- test/CodeGen/AMDGPU/i1-copy-from-loop.ll | 12 +- test/CodeGen/AMDGPU/indirect-addressing-si.ll | 12 +- test/CodeGen/AMDGPU/loop_exit_with_xor.ll | 4 +- test/CodeGen/AMDGPU/multilevel-break.ll | 56 +- test/CodeGen/AMDGPU/optimize-negated-cond.ll | 8 +- test/CodeGen/AMDGPU/si-annotate-cf.ll | 12 +- test/CodeGen/AMDGPU/wave32.ll | 36 +- test/CodeGen/AMDGPU/wqm.ll | 11 +- test/CodeGen/ARM/2011-03-23-PeepholeBug.ll | 2 +- test/CodeGen/ARM/arm-and-tst-peephole.ll | 5 +- test/CodeGen/ARM/atomic-cmp.ll | 2 +- test/CodeGen/ARM/atomic-cmpxchg.ll | 26 +- test/CodeGen/ARM/code-placement.ll | 4 +- test/CodeGen/ARM/pr32578.ll | 2 +- test/CodeGen/Hexagon/bug6757-endloop.ll | 2 +- test/CodeGen/Hexagon/early-if-merge-loop.ll | 4 +- test/CodeGen/Hexagon/prof-early-if.ll | 2 +- test/CodeGen/Hexagon/redundant-branching2.ll | 2 +- test/CodeGen/PowerPC/atomics-regression.ll | 312 +- test/CodeGen/PowerPC/block-placement-1.mir | 8 +- test/CodeGen/PowerPC/cmp_elimination.ll | 11 +- test/CodeGen/PowerPC/licm-remat.ll | 3 +- test/CodeGen/PowerPC/machine-pre.ll | 36 +- test/CodeGen/RISCV/atomic-rmw.ll | 4938 ++++++++++---------- test/CodeGen/RISCV/remat.ll | 55 +- test/CodeGen/Thumb/consthoist-physical-addr.ll | 12 +- test/CodeGen/Thumb/pr42760.ll | 26 +- test/CodeGen/X86/block-placement.ll | 19 +- test/CodeGen/X86/code_placement.ll | 7 +- .../code_placement_ignore_succ_in_inner_loop.ll | 7 +- .../CodeGen/X86/code_placement_no_header_change.ll | 2 +- test/CodeGen/X86/conditional-tailcall.ll | 178 +- test/CodeGen/X86/loop-blocks.ll | 38 +- test/CodeGen/X86/loop-rotate.ll | 120 + test/CodeGen/X86/lsr-loop-exit-cond.ll | 66 +- test/CodeGen/X86/move_latch_to_loop_top.ll | 16 +- test/CodeGen/X86/pr38185.ll | 16 +- test/CodeGen/X86/ragreedy-hoist-spill.ll | 123 +- test/CodeGen/X86/reverse_branches.ll | 35 +- test/CodeGen/X86/speculative-load-hardening.ll | 57 +- test/CodeGen/X86/tail-dup-merge-loop-headers.ll | 67 +- test/CodeGen/X86/tail-dup-repeat.ll | 25 +- test/CodeGen/X86/vector-shift-by-select-loop.ll | 69 +- test/CodeGen/X86/widen_arith-1.ll | 16 +- test/CodeGen/X86/widen_arith-2.ll | 16 +- test/CodeGen/X86/widen_arith-3.ll | 16 +- test/CodeGen/X86/widen_arith-4.ll | 32 +- test/CodeGen/X86/widen_arith-5.ll | 16 +- test/CodeGen/X86/widen_arith-6.ll | 16 +- test/CodeGen/X86/widen_cast-4.ll | 16 +- test/DebugInfo/X86/PR37234.ll | 12 +- test/DebugInfo/X86/dbg-value-transfer-order.ll | 13 +- 58 files changed, 3542 insertions(+), 3260 deletions(-) create mode 100644 test/CodeGen/X86/loop-rotate.ll