[PATCH] D49966: [X86] Performing DAG pruning before selection of LEA instructions.

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Oct 18 21:40:58 PDT 2018


craig.topper added a comment.

In https://reviews.llvm.org/D49966#1268534, @xbolva00 wrote:

> Also we should avoid cases like
>  mov     eax, dword ptr [rsi]
>  lea     eax, [rax + rdi]
>
> and use add instruction like gcc:
>  add     edi, DWORD PTR [rsi]
>
> https://godbolt.org/z/KQAOV-
>
> cc @craig.topper


Please file a bug. That's a completely different issue.


Repository:
  rL LLVM

https://reviews.llvm.org/D49966





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