[PATCH] D24108: X86: Fold tail calls into conditional branches where possible (PR26302)
Hans Wennborg via llvm-commits
llvm-commits at lists.llvm.org
Wed Aug 31 17:56:28 PDT 2016
hans added a comment.
In https://reviews.llvm.org/D24108#531040, @joerg wrote:
> If there are multiple users of the tail call (e.g. via different incoming edges), this can actually create a size regression by replacing a byte-immediate jump with a 32bit jump?
The transformation only occurs when there's a single edge to the tail call.
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