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Author SHA1 Message Date
Matt Arsenault b6d8c37e1a AMDGPU: Fold more custom nodes to undef 
This will help sneak undefs past GVN into the DAG for
some tests.

Also add missing intrinsic for rsq_legacy, even though the node
was already selected to the instruction. Also start passing
the debug location to intrinsic errors.

llvm-svn: 273181
 2016-06-20 18:33:56 +00:00
Matt Arsenault 7401516985 AMDGPU: Add fract intrinsic 
Remove broken patterns matching it. This was matching the
unsafe math pattern and expanding the fix for the buggy instruction
from the pattern. The problems are also on CI. Remove the workarounds
and only use fract with unsafe math or from the intrinsic.

llvm-svn: 271078
 2016-05-28 00:19:52 +00:00