[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 added inline comments.


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Comment at: llvm/test/CodeGen/X86/ragreedy-hoist-spill.ll:78
 ; CHECK-NEXT:    callq _memset
+; CHECK-NEXT:    movq %r14, %rdi
+; CHECK-NEXT:    movq %rbx, %rdx
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skan wrote:
> @wxiao3 @pengfei It seems a regression for x86.
BB6 has higher frequency than BB7. If the branch in BB6 has 50% of taken probability, the final number of executed instructions are same.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D156491/new/

https://reviews.llvm.org/D156491