[PATCH] D49605: AMDGPU: Fix implementation of isCanonicalized
Matt Arsenault via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Jul 20 09:29:02 PDT 2018
arsenm created this revision.
arsenm added reviewers: rampitec, scanon, b-sumner.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, kzhuravl.
If denormals are enabled, denormals are canonical.
Also fix a few other issues. minnum/maxnum are supposed
to canonicalize. Temporarily improve workaround for the
instruction behavior change in gfx9.
Handle selects and fcopysign.
The tests were also largely broken, since they were
checking for a flush used on
https://reviews.llvm.org/D49605
Files:
lib/Target/AMDGPU/SIISelLowering.cpp
lib/Target/AMDGPU/SIISelLowering.h
test/CodeGen/AMDGPU/fcanonicalize-elimination.ll
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