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Fix: SLPVectorizer tried to move an instruction which was replaced by a vector instruction.

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For a detailed description of the problem see the comment in the test file.
The problematic moveBefore() calls are not required anymore because the new
scheduling algorithm ensures a correct ordering anyway.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216656 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Erik Eckstein
2014-08-28 07:04:02 +00:00
parent 5ca793561e
commit c84ba857ea
2 changed files with 41 additions and 4 deletions
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4
lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -3112,11 +3112,9 @@ bool SLPVectorizer::tryToVectorize(BinaryOperator *V, BoUpSLP &R) {
BinaryOperator *B0 = dyn_cast<BinaryOperator>(B->getOperand(0));
BinaryOperator *B1 = dyn_cast<BinaryOperator>(B->getOperand(1));
if (tryToVectorizePair(A, B0, R)) {
B->moveBefore(V);
return true;
}
if (tryToVectorizePair(A, B1, R)) {
B->moveBefore(V);
return true;
}
}
@ -3126,11 +3124,9 @@ bool SLPVectorizer::tryToVectorize(BinaryOperator *V, BoUpSLP &R) {
BinaryOperator *A0 = dyn_cast<BinaryOperator>(A->getOperand(0));
BinaryOperator *A1 = dyn_cast<BinaryOperator>(A->getOperand(1));
if (tryToVectorizePair(A0, B, R)) {
A->moveBefore(V);
return true;
}
if (tryToVectorizePair(A1, B, R)) {
A->moveBefore(V);
return true;
}
}