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authorCraig Topper <craig.topper@intel.com>2018-12-24 19:40:20 +0000
committerCraig Topper <craig.topper@intel.com>2018-12-24 19:40:20 +0000
commit0229da8f078a9b6fd82352d94c70b0531bca3d4f (patch)
treeef27583f65998195d8d54df4af20d5edf35b5646 /llvm/lib/Target/PowerPC/PPCISelLowering.cpp
parent6356ad940bc3aa7f98ddd4ab0a4feb00f12fe411 (diff)
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[X86] Use GetDemandedBits to simplify the operands of PMULDQ/PMULUDQ.
This is an alternative to what I attempted in D56057. GetDemandedBits is a special version of SimplifyDemandedBits that allows simplifications even when the operand has other uses. GetDemandedBits will only do simplifications that allow a node to be bypassed. It won't create new nodes or alter any of the other users. I had to add support for bypassing SIGN_EXTEND_INREG to GetDemandedBits. Based on a patch that Simon Pilgrim sent me in email. Fixes PR40142. llvm-svn: 350059
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCISelLowering.cpp')
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