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simplify some code, BreakUpSubtract always returns nonnull now. 

llvm-svn: 47251
This commit is contained in:
Chris Lattner 2008-02-18 02:18:25 +00:00
parent 8432cc662f
commit 0e7fd2f1a8
1 changed files with 2 additions and 4 deletions
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4
llvm/lib/Transforms/Scalar/Reassociate.cpp
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@ -779,10 +779,8 @@ void Reassociate::ReassociateBB(BasicBlock *BB) {
// see if we can convert it to X+-Y. // see if we can convert it to X+-Y.
if (BI->getOpcode() == Instruction::Sub) { if (BI->getOpcode() == Instruction::Sub) {
if (ShouldBreakUpSubtract(BI)) { if (ShouldBreakUpSubtract(BI)) {
if (Instruction *NI = BreakUpSubtract(BI)) { BI = BreakUpSubtract(BI);
MadeChange = true; MadeChange = true;
BI = NI;
}
} else if (BinaryOperator::isNeg(BI)) { } else if (BinaryOperator::isNeg(BI)) {
// Otherwise, this is a negation. See if the operand is a multiply tree // Otherwise, this is a negation. See if the operand is a multiply tree
// and if this is not an inner node of a multiply tree. // and if this is not an inner node of a multiply tree.