[PATCH] D48529: [DAGCombiner][X86][PowerPC][ARM][AMDGPU][Sparc] Replace (sub C, X) with (xor X, C) if there is no chance of a borrow during the subtraction.

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jun 27 09:03:24 PDT 2018

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craig.topper abandoned this revision.
craig.topper added a comment.

I made an X86 specific change for this directly in isel. Abandoning.


Repository:
  rL LLVM

https://reviews.llvm.org/D48529

Previous message: [PATCH] D48529: [DAGCombiner][X86][PowerPC][ARM][AMDGPU][Sparc] Replace (sub C, X) with (xor X, C) if there is no chance of a borrow during the subtraction.
Next message: [PATCH] D48471: [WebAssembly] Add pass to infer prototypes for prototype-less functions
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