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...ster renaming. > > http://en.wikipedia.org/wiki/Register_renaming > http://www.intel.com/Assets/PDF/manual/248966.pdf > > /jakob > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110417/8f1cd34f/attachment.html>

On Apr 8, 2011, at 9:56 AM, NAKAMURA Takumi wrote: >>> 8B C3 mov eax, ebx >>> 03 C1 add eax, ecx >>> becomes >>> 8B C3 03 C1 add eax, ebx, ecx > > In my understanding, twoaddr pass tends to emit such a sequence. Yes, it always does, and the coalescer tries very hard to eliminate the copy. > Though I