I see, that's a good idea. I'll revert r291083 and we can go forward with this patch.
On Thu, Jan 5, 2017 at 8:05 PM, Senthil Kumar Selvaraj via Phabricator < revi...@reviews.llvm.org> wrote: > saaadhu added a comment. > > If you've added X, Y, Z and SP to GCCRegNames, you don't need AddlRegNames > array at all, > > The reason I had them in AddlRegNames was to tell Clang that they alias > regs in GCCRegNames. I followed X86TargetInfo's example - it has "ax" in > GCCRegNames, and "al", "ah", "eax" and "rax" in AddlRegNames. I figured > Clang could potentially use the fact that they alias when analyzing inline > asm to detect unintended clobbers. > > > https://reviews.llvm.org/D28343 > > > >
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