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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-10-23 07:33:29 -0700 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-10-23 07:33:29 -0700 |
| commit | a4d55a2c3607c411a16a01a61bd667a03fee7264 (patch) | |
| tree | 233776a9d28679f7027520270b8dc689a00e7e7e /llvm/lib/Target | |
| parent | a9c3c176ad741b9c2b915abc59dd977d0299c53f (diff) | |
| download | bcm5719-llvm-a4d55a2c3607c411a16a01a61bd667a03fee7264.tar.gz bcm5719-llvm-a4d55a2c3607c411a16a01a61bd667a03fee7264.zip | |
[X86] combineX86ShufflesRecursively - assert the root mask is legal. NFCI.
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index ed975e9248a..9e628584571 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -33026,6 +33026,9 @@ static SDValue combineX86ShufflesRecursively( ArrayRef<int> RootMask, ArrayRef<const SDNode *> SrcNodes, unsigned Depth, bool HasVariableMask, bool AllowVariableMask, SelectionDAG &DAG, const X86Subtarget &Subtarget) { + assert(RootMask.size() > 0 && (RootMask.size() > 1 || RootMask[0] == 0) && + "Illegal shuffle root mask"); + // Bound the depth of our recursive combine because this is ultimately // quadratic in nature. const unsigned MaxRecursionDepth = 8; |
