5 Commits

Author	SHA1	Message	Date
Matt Arsenault	74a576e7d3	AMDGPU: Check nsz instead of unsafe math ... llvm-svn: 293028	2017-01-25 06:27:02 +00:00
Matt Arsenault	7aad8fd8f4	Enable FeatureFlatForGlobal on Volcanic Islands ... This switches to the workaround that HSA defaults to for the mesa path. This should be applied to the 4.0 branch. Patch by Vedran Miletić <vedran@miletic.net> llvm-svn: 292982	2017-01-24 22:02:15 +00:00
Matt Arsenault	3e6f9b5773	AMDGPU: Disable some fneg combines unless nsz ... For -(x + y) -> (-x) + (-y), if x == -y, this would change the result from -0.0 to 0.0. Since the fma/fmad combine is an extension of this problem it also applies there. fmul should be fine, and I don't think any of the unary operators or conversions should be a problem either. llvm-svn: 292473	2017-01-19 06:35:27 +00:00
Matt Arsenault	45337df08f	AMDGPU: Skip fneg/select combine if it can fold into other ... llvm-svn: 291792	2017-01-12 18:58:15 +00:00
Matt Arsenault	2a04ff97ad	AMDGPU: Pull fneg/fabs out of a select ... Allows better source modifier usage. llvm-svn: 291729	2017-01-11 23:57:38 +00:00