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| author | Tom Stellard <tstellar@redhat.com> | 2017-10-25 20:56:42 +0000 |
|---|---|---|
| committer | Tom Stellard <tstellar@redhat.com> | 2017-10-25 20:56:42 +0000 |
| commit | f042b00be5f69c21b3fe846f7343dd44ed92a74e (patch) | |
| tree | 8483652d6aa4f82593519043d84f658d03359778 /lib/Target | |
| parent | 6af15925d78ad44aa3cfa8d2ca7576e31da06dfc (diff) | |
Merging r315485:
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r315485 | spatel | 2017-10-11 11:24:21 -0700 (Wed, 11 Oct 2017) | 7 lines
[x86] avoid infinite loop from SoftenFloatOperand (PR34866)
Legalization of fp128 assumes things that we should have asserts for,
so that's another potential improvement.
Differential Revision: https://reviews.llvm.org/D38771
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_50@316607 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 2255c5dcc4f3..607bc4530abb 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -34745,6 +34745,11 @@ static SDValue combineVectorSizedSetCCEquality(SDNode *SetCC, SelectionDAG &DAG, if (!OpVT.isScalarInteger() || OpSize < 128 || isNullConstant(Y)) return SDValue(); + // Bail out if we know that this is not really just an oversized integer. + if (peekThroughBitcasts(X).getValueType() == MVT::f128 || + peekThroughBitcasts(Y).getValueType() == MVT::f128) + return SDValue(); + // TODO: Use PXOR + PTEST for SSE4.1 or later? // TODO: Add support for AVX-512. EVT VT = SetCC->getValueType(0); |