[PATCH] D33003: Add callee-saved registers as implicit uses in return instructions

[Krzysztof Parzyszek via Phabricator via llvm-commits]

kparzysz updated this revision to Diff 98763.
kparzysz added a comment.

Add pristine registers as live-in to all blocks that are on a path from entry to a return block.

This causes one X86 testcase to fail: CodeGen/X86/break-false-dep.ll

  test/CodeGen/X86/break-false-dep.ll:317:7: error: expected string not found in input
  ;AVX: vcvtsi2sdq {{.*}}, %xmm6, {{%xmm[0-9]+}}
        ^
  <stdin>:496:2: note: scanning from here
   #APP
   ^
  <stdin>:585:2: note: possible intended match here
   vcvtsi2sdq %r11, %xmm2, %xmm4
   ^


Repository:
  rL LLVM

https://reviews.llvm.org/D33003

Files:
  include/llvm/Target/TargetFrameLowering.h
  lib/CodeGen/PrologEpilogInserter.cpp
  lib/CodeGen/TargetFrameLoweringImpl.cpp
  lib/Target/ARM/ARMFrameLowering.cpp
  lib/Target/ARM/ARMFrameLowering.h
  lib/Target/ARM/ARMLoadStoreOptimizer.cpp
  lib/Target/X86/X86FrameLowering.cpp
  lib/Target/X86/X86FrameLowering.h
  test/CodeGen/PowerPC/ppc-shrink-wrapping.ll

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