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| author | Dan Gohman <gohman@apple.com> | 2009-08-11 19:56:00 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-08-11 19:56:00 +0000 |
| commit | 221a2c711d6c2487647ce43a2abb5f3b2510d3fd (patch) | |
| tree | 252f7532dfde1bf0c50ef51b986cc9c5b4e46324 | |
| parent | 841850ed262730f6683edd95af5b07cd4c4527d3 (diff) | |
| download | bcm5719-llvm-221a2c711d6c2487647ce43a2abb5f3b2510d3fd.tar.gz bcm5719-llvm-221a2c711d6c2487647ce43a2abb5f3b2510d3fd.zip | |
Don't set the isexact flag if an sdiv operator has been folded into
something else.
llvm-svn: 78702
| -rw-r--r-- | llvm/lib/VMCore/Constants.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/VMCore/Constants.cpp b/llvm/lib/VMCore/Constants.cpp index 70d43576a73..d71dc2cf710 100644 --- a/llvm/lib/VMCore/Constants.cpp +++ b/llvm/lib/VMCore/Constants.cpp @@ -607,7 +607,10 @@ Constant* ConstantVector::get(Constant* const* Vals, unsigned NumVals) { Constant* ConstantExpr::getExactSDiv(Constant* C1, Constant* C2) { Constant *C = getSDiv(C1, C2); - cast<SDivOperator>(C)->setIsExact(true); + // Set exact attribute, assuming constant folding didn't eliminate the + // SDiv. + if (SDivOperator *SDiv = dyn_cast<SDivOperator>(C)) + SDiv->setIsExact(true); return C; } |
