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| author | Sanjay Patel <spatel@rotateright.com> | 2018-09-24 17:18:32 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2018-09-24 17:18:32 +0000 |
| commit | 3413a66c384f91f08185e1f88dad9adca6189586 (patch) | |
| tree | 737290fc9ceb322386a2c8e248796d3babf8b338 /llvm/lib/Analysis/VectorUtils.cpp | |
| parent | 7b86bc22de3dbe617f69d2c6d7c24cf2fbe82bc0 (diff) | |
| download | llvm-3413a66c384f91f08185e1f88dad9adca6189586.zip llvm-3413a66c384f91f08185e1f88dad9adca6189586.tar.gz llvm-3413a66c384f91f08185e1f88dad9adca6189586.tar.bz2 | |
[Analysis] add comment to generalize finding a scalar op from vector; NFC
llvm-svn: 342906
Diffstat (limited to 'llvm/lib/Analysis/VectorUtils.cpp')
| -rw-r--r-- | llvm/lib/Analysis/VectorUtils.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/llvm/lib/Analysis/VectorUtils.cpp b/llvm/lib/Analysis/VectorUtils.cpp index 2f4f72a..c639f36 100644 --- a/llvm/lib/Analysis/VectorUtils.cpp +++ b/llvm/lib/Analysis/VectorUtils.cpp @@ -280,9 +280,10 @@ Value *llvm::findScalarElement(Value *V, unsigned EltNo) { } // Extract a value from a vector add operation with a constant zero. - Value *Val = nullptr; Constant *Con = nullptr; - if (match(V, m_Add(m_Value(Val), m_Constant(Con)))) - if (Constant *Elt = Con->getAggregateElement(EltNo)) + // TODO: Use getBinOpIdentity() to generalize this. + Value *Val; Constant *C; + if (match(V, m_Add(m_Value(Val), m_Constant(C)))) + if (Constant *Elt = C->getAggregateElement(EltNo)) if (Elt->isNullValue()) return findScalarElement(Val, EltNo); |