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ConstantInt::get only works for arguments < 128.

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SimplifyLibCalls probably has to be audited to make sure it does not make
this mistake elsewhere.  Also, if this code knows that the type will be
unsigned, obviously one arm of this is dead.

Reid, can you take a look into this further?


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22566 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-08-01 16:52:50 +00:00
parent d29b6aa608
commit 9cc5f42feb
1 changed files with 6 additions and 2 deletions
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8
lib/Transforms/IPO/SimplifyLibCalls.cpp
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@ -962,8 +962,12 @@ struct StrLenOptimization : public LibCallOptimization
return false;
// strlen("xyz") -> 3 (for example)
ci->replaceAllUsesWith(
ConstantInt::get(SLC.getTargetData()->getIntPtrType(),len));
const Type *Ty = SLC.getTargetData()->getIntPtrType();
if (Ty->isSigned())
ci->replaceAllUsesWith(ConstantSInt::get(Ty, len));
else
ci->replaceAllUsesWith(ConstantUInt::get(Ty, len));
ci->eraseFromParent();
return true;
}