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| author | Vitaly Buka <vitalybuka@google.com> | 2019-07-12 22:37:55 +0000 |
|---|---|---|
| committer | Vitaly Buka <vitalybuka@google.com> | 2019-07-12 22:37:55 +0000 |
| commit | b1bff76e22bd39eb46dcae49891fda1cf1cc0bd5 (patch) | |
| tree | 41d1f5bd2bb0a5cb42aae6bbd384dd0318a99388 /llvm/lib/Analysis/ValueTracking.cpp | |
| parent | db101864bdc938deb1d63fe4f7da761bd38e5cae (diff) | |
| download | bcm5719-llvm-b1bff76e22bd39eb46dcae49891fda1cf1cc0bd5.tar.gz bcm5719-llvm-b1bff76e22bd39eb46dcae49891fda1cf1cc0bd5.zip | |
isBytewiseValue checks ConstantVector element by element
Summary: Vector of the same value with few undefs will sill be considered "Bytewise"
Reviewers: eugenis, pcc, jfb
Reviewed By: jfb
Subscribers: dexonsmith, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D64031
llvm-svn: 365971
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index cf8fa9cee3f..ad8034b2d7b 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -3253,12 +3253,7 @@ Value *llvm::isBytewiseValue(Value *V, const DataLayout &DL) { return Val; } - if (isa<ConstantVector>(C)) { - Constant *Splat = cast<ConstantVector>(C)->getSplatValue(); - return Splat ? isBytewiseValue(Splat, DL) : nullptr; - } - - if (isa<ConstantArray>(C) || isa<ConstantStruct>(C)) { + if (isa<ConstantAggregate>(C)) { Value *Val = UndefInt8; for (unsigned I = 0, E = C->getNumOperands(); I != E; ++I) if (!(Val = Merge(Val, isBytewiseValue(C->getOperand(I), DL)))) |
