[PATCH] D104440: [X86] Fix bug when X86 stackify pass handle one ArgFPRW.

Sat Jun 19 22:47:42 PDT 2021

LuoYuanke added a comment.

In D104440#2829202 <https://reviews.llvm.org/D104440#2829202>, @craig.topper wrote:

> In D104440#2829199 <https://reviews.llvm.org/D104440#2829199>, @LuoYuanke wrote:
>
>> BTW, do you think the patch to handle undef case in stackify pass reasonable?
>
> No I do not. I have no reason to believe fneg or one arg instructions are the only things that could be effected. We need to understand why this is happening because isel was trying to prevent this.

Ok, I'll continue to debug it in isel.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D104440/new/

https://reviews.llvm.org/D104440