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ConstantInt::get only works for arguments < 128. 

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?

llvm-svn: 22566
This commit is contained in:
Chris Lattner 2005-08-01 16:52:50 +00:00
parent 546fd5944e
commit e17c5d0e59
1 changed files with 6 additions and 2 deletions
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8
llvm/lib/Transforms/IPO/SimplifyLibCalls.cpp
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@ -962,8 +962,12 @@ struct StrLenOptimization : public LibCallOptimization
return false; return false;
// strlen("xyz") -> 3 (for example) // strlen("xyz") -> 3 (for example)
ci->replaceAllUsesWith( const Type *Ty = SLC.getTargetData()->getIntPtrType();
ConstantInt::get(SLC.getTargetData()->getIntPtrType(),len)); if (Ty->isSigned())
ci->replaceAllUsesWith(ConstantSInt::get(Ty, len));
else
ci->replaceAllUsesWith(ConstantUInt::get(Ty, len));
ci->eraseFromParent(); ci->eraseFromParent();
return true; return true;
} }