[PATCH] D156491: [RA] Split a virtual register in cold blocks if it is not assigned preferred physical register

[Guozhi Wei via Phabricator via llvm-commits]

Carrot updated this revision to Diff 547287.
Carrot added a comment.

Improve the cost computation when the VirtReg is assigned a non hint physical register, it fixed several regressions.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156491/new/

https://reviews.llvm.org/D156491

Files:
  llvm/lib/CodeGen/RegAllocGreedy.cpp
  llvm/lib/CodeGen/RegAllocGreedy.h
  llvm/test/CodeGen/AArch64/cgp-usubo.ll
  llvm/test/CodeGen/AArch64/csr-split.ll
  llvm/test/CodeGen/AMDGPU/blender-no-live-segment-at-def-implicit-def.ll
  llvm/test/CodeGen/AMDGPU/greedy-alloc-fail-sgpr1024-spill.mir
  llvm/test/CodeGen/AMDGPU/insert-delay-alu-bug.ll
  llvm/test/CodeGen/AMDGPU/ran-out-of-sgprs-allocation-failure.mir
  llvm/test/CodeGen/AMDGPU/unstructured-cfg-def-use-issue.ll
  llvm/test/CodeGen/ARM/csr-split.ll
  llvm/test/CodeGen/ARM/divmod-eabi.ll
  llvm/test/CodeGen/ARM/thumb2-size-opt.ll
  llvm/test/CodeGen/AVR/cttz.ll
  llvm/test/CodeGen/Hexagon/noreturn-noepilog.ll
  llvm/test/CodeGen/PowerPC/csr-split.ll
  llvm/test/CodeGen/PowerPC/ppc64-rop-protection-aix.ll
  llvm/test/CodeGen/PowerPC/ppc64-rop-protection.ll
  llvm/test/CodeGen/PowerPC/subreg-postra.ll
  llvm/test/CodeGen/PowerPC/tail-dup-break-cfg.ll
  llvm/test/CodeGen/PowerPC/tls-cse.ll
  llvm/test/CodeGen/RISCV/double-stack-spill-restore.ll
  llvm/test/CodeGen/RISCV/fmax-fmin.ll
  llvm/test/CodeGen/RISCV/overflow-intrinsics.ll
  llvm/test/CodeGen/RISCV/rvv/fixed-vectors-strided-vpload.ll
  llvm/test/CodeGen/Thumb2/pacbti-m-outliner-3.ll
  llvm/test/CodeGen/X86/2007-11-30-LoadFolding-Bug.ll
  llvm/test/CodeGen/X86/cgp-usubo.ll
  llvm/test/CodeGen/X86/csr-split.ll
  llvm/test/CodeGen/X86/ragreedy-bug.ll
  llvm/test/CodeGen/X86/ragreedy-hoist-spill.ll
  llvm/test/CodeGen/X86/speculative-load-hardening.ll
  llvm/test/CodeGen/X86/split-reg-with-hint.ll
  llvm/test/CodeGen/X86/statepoint-call-lowering.ll
  llvm/test/CodeGen/X86/statepoint-invoke-ra-enter-at-end.mir
  llvm/test/CodeGen/X86/statepoint-ra.ll
  llvm/test/CodeGen/X86/statepoint-vreg-details.ll
  llvm/test/CodeGen/X86/statepoint-vreg.ll
  llvm/test/DebugInfo/ARM/sdag-split-arg.ll
  llvm/test/DebugInfo/X86/live-debug-values.ll
  llvm/test/tools/llvm-objdump/XCOFF/disassemble-symbolize-operands.ll

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