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Fix bug where multiplying varying array offset by zero would cause crash in optimization passes.

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Matt Pharr
2011-10-31 08:28:51 -07:00
parent e009c0a61d
commit d224252b5d
1 changed files with 1 additions and 1 deletions
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opt.cpp
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@@ -2288,7 +2288,7 @@ lVectorIsLinear(llvm::Value **v, int vectorLength, int stride,
// set of integer values will give a sequence with the desired // set of integer values will give a sequence with the desired
// stride. // stride.
int mulScale = (int)scaleValue->getZExtValue(); int mulScale = (int)scaleValue->getZExtValue();
if ((stride % mulScale) != 0) if (mulScale == 0 || (stride % mulScale) != 0)
return false; return false;
llvm::Value **otherValue = (llvm::Value **)alloca(vectorLength * sizeof(llvm::Value *)); llvm::Value **otherValue = (llvm::Value **)alloca(vectorLength * sizeof(llvm::Value *));