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4 Commits

Author SHA1 Message Date
Matt Arsenault af635240d5 AMDGPU: Undo sub x, c -> add x, -c canonicalization 
This is worse if the original constant is an inline immediate.

This should also be done for 64-bit adds, but requires fixing
operand folding bugs first.

llvm-svn: 293540
 2017-01-30 19:30:24 +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 be90f70d3a AMDGPU: Try to commute when selecting s_addk_i32/s_mulk_i32 
llvm-svn: 280972
 2016-09-08 17:35:41 +00:00
Matt Arsenault b6be202779 AMDGPU: Use s_addk_i32 / s_mulk_i32 
llvm-svn: 266506
 2016-04-16 01:46:49 +00:00