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author	Simon Pilgrim <llvm-dev@redking.me.uk>
	Tue, 24 Oct 2017 15:38:16 +0000 (15:38 +0000)
committer	Simon Pilgrim <llvm-dev@redking.me.uk>
	Tue, 24 Oct 2017 15:38:16 +0000 (15:38 +0000)
commit	63054166c136a8ec29951006c5703d513255ebfe
tree	e7ff6f8ceecfc1dfcf3bc0c9d16728007e696733	tree \| snapshot
parent	c966bbfe39e630e0bab6e185332eec755322e094	commit \| diff

[X86] truncateVectorCompareWithPACKSS - use PACKSSDW/PACKSSWB instead of just PACKSSWB.

By using the widest type possible for PACKSS truncation we have a better chance of being able to peek through bitcasts and improves other combines driven by ComputeNumSignBits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316448 91177308-0d34-0410-b5e6-96231b3b80d8

13 files changed:

external/llvm

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lib/Target/X86/X86ISelLowering.cpp		diff \| blob \| history
test/CodeGen/X86/bitcast-and-setcc-256.ll		diff \| blob \| history
test/CodeGen/X86/bitcast-and-setcc-512.ll		diff \| blob \| history
test/CodeGen/X86/bitcast-setcc-256.ll		diff \| blob \| history
test/CodeGen/X86/bitcast-setcc-512.ll		diff \| blob \| history
test/CodeGen/X86/packss.ll		diff \| blob \| history
test/CodeGen/X86/psubus.ll		diff \| blob \| history
test/CodeGen/X86/setcc-lowering.ll		diff \| blob \| history
test/CodeGen/X86/sse-fsignum.ll		diff \| blob \| history
test/CodeGen/X86/vector-compare-all_of.ll		diff \| blob \| history
test/CodeGen/X86/vector-compare-any_of.ll		diff \| blob \| history
test/CodeGen/X86/vector-compare-results.ll		diff \| blob \| history
test/CodeGen/X86/vselect-packss.ll		diff \| blob \| history