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Fix a bug in ISD::isBuildVectorAllOnesInteger that caused it to always return

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27131 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-03-25 22:59:28 +00:00
parent 61d4399dfc
commit 452e8354d5
1 changed files with 3 additions and 2 deletions
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5
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -86,12 +86,13 @@ bool ISD::isBuildVectorAllOnesInteger(const SDNode *N) {
// Do not accept build_vectors that aren't all constants or which have non-~0
// elements.
if (!isa<ConstantSDNode>(N) || !cast<ConstantSDNode>(N)->isAllOnesValue())
SDOperand NotZero = N->getOperand(i);
if (!isa<ConstantSDNode>(NotZero) ||
!cast<ConstantSDNode>(NotZero)->isAllOnesValue())
return false;
// Okay, we have at least one ~0 value, check to see if the rest match or are
// undefs.
SDOperand NotZero = N->getOperand(i);
for (++i; i != e; ++i)
if (N->getOperand(i) != NotZero &&
N->getOperand(i).getOpcode() != ISD::UNDEF)