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On Mar 3, 2010, at 3:20 PM, Chris Lattner wrote: > > On Mar 3, 2010, at 1:53 PM, David Greene wrote: > >>> >>> IMO rounding mode should be explicitly marked on the >>> instruction as well. >> >> That would also be useful for some GPUs where each instruction can specify >> its own rounding mode. > > SSE4 also has this for at least

.../ Rob: from original post: I would expect the following optimizations, but didn't find them in the code: x + 0 = x x * 0 = 0 x * 1 = 1 x * -1 = -x -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100304/ab3a1b7a/attachment.html>