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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2024-04-04 11:43:09 -0400 |
|---|---|---|
| committer | Matt Arsenault <arsenm2@gmail.com> | 2024-04-08 09:26:12 -0400 |
| commit | 2bc637b1ce935550b6e09618c76474253943a7cc (patch) | |
| tree | 467a2d59648c74bc794cd28ce8315f1cdda8679a /llvm/lib/Analysis/ValueTracking.cpp | |
| parent | 0832b85e0f5b684ad2e5eaf29911ca806eb0db3d (diff) | |
| download | llvm-2bc637b1ce935550b6e09618c76474253943a7cc.zip llvm-2bc637b1ce935550b6e09618c76474253943a7cc.tar.gz llvm-2bc637b1ce935550b6e09618c76474253943a7cc.tar.bz2 | |
ValueTracking: Handle ConstantAggregateZero in computeKnownFPClass
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index 5279f03..0c8ab4c 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -4507,6 +4507,12 @@ void computeKnownFPClass(const Value *V, const APInt &DemandedElts, return; } + if (isa<ConstantAggregateZero>(V)) { + Known.KnownFPClasses = fcPosZero; + Known.SignBit = false; + return; + } + // Try to handle fixed width vector constants auto *VFVTy = dyn_cast<FixedVectorType>(V->getType()); const Constant *CV = dyn_cast<Constant>(V); |