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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2014-11-10 20:40:21 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2014-11-10 20:40:21 +0000 |
| commit | 3218b942f489c57224ebf57c9b93274b6b5d8434 (patch) | |
| tree | 5b67b2d6f13c001571309ba9bcabc793baa3a1db /llvm/lib | |
| parent | 95dcc08e8261fca01e8879b25055d3b4762d60c6 (diff) | |
| download | bcm5719-llvm-3218b942f489c57224ebf57c9b93274b6b5d8434.tar.gz bcm5719-llvm-3218b942f489c57224ebf57c9b93274b6b5d8434.zip | |
[X86] Fix pattern match for 32-to-64-bit zext in the presence of AssertSext
This fixes an issue with matching trunc -> assertsext -> zext on x86-64, which would not zero the high 32-bits.
See PR20494 for details.
Differential Revision: http://reviews.llvm.org/D6128
llvm-svn: 221626
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrCompiler.td | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86InstrCompiler.td b/llvm/lib/Target/X86/X86InstrCompiler.td index bf25672b2f6..117b6ff2103 100644 --- a/llvm/lib/Target/X86/X86InstrCompiler.td +++ b/llvm/lib/Target/X86/X86InstrCompiler.td @@ -1191,6 +1191,7 @@ def def32 : PatLeaf<(i32 GR32:$src), [{ return N->getOpcode() != ISD::TRUNCATE && N->getOpcode() != TargetOpcode::EXTRACT_SUBREG && N->getOpcode() != ISD::CopyFromReg && + N->getOpcode() != ISD::AssertSext && N->getOpcode() != X86ISD::CMOV; }]>; |
