On Thu, Jan 19, 2012 at 9:56 AM, Kostya Serebryany <[email protected]> wrote:
> > > On Thu, Jan 19, 2012 at 1:18 AM, Anton Korobeynikov < > [email protected]> wrote: > >> Hi Kostya, >> >> >> > The patches are attached, the llvm patch is also published >> > here: http://codereview.appspot.com/5544058/ >> What is the performance impact of this? >> > > Good point (I assume you mean compile-time performance, not the > performance of compiled programs). > I've verified that the compile-time did not change by building 403.gcc > and 483.xalancbmk with the original and modified clang with -O1. > Out of curiosity did you check the compile-time performance for 64-bit clang/llvm, 32-bit clang/llvm, or both? I would imagine that extending attributes to 64-bit would have negligible impact for a 64-bit compiler binary but potentially greater impact for a 32-bit one as they would no longer fit in a single register. Cheers, Kaelyn
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