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Fix rdar://6505632, an llc crash on 483.xalancbmk

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62470 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-01-18 20:35:00 +00:00
parent 15c94d08ab
commit d62284a804
2 changed files with 38 additions and 1 deletions
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3
lib/Transforms/Scalar/CodeGenPrepare.cpp
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@@ -688,7 +688,8 @@ bool AddressingModeMatcher::MatchScaledValue(Value *ScaleReg, int64_t Scale,
// to see if ScaleReg is actually X+C. If so, we can turn this into adding
// X*Scale + C*Scale to addr mode.
ConstantInt *CI; Value *AddLHS;
if (match(ScaleReg, m_Add(m_Value(AddLHS), m_ConstantInt(CI)))) {
if (isa<Instruction>(ScaleReg) && // not a constant expr.
match(ScaleReg, m_Add(m_Value(AddLHS), m_ConstantInt(CI)))) {
TestAddrMode.ScaledReg = AddLHS;
TestAddrMode.BaseOffs += CI->getSExtValue()*TestAddrMode.Scale;