memcpy returns void!!!!!
llvm-svn: 21574
diff --git a/llvm/lib/Transforms/IPO/SimplifyLibCalls.cpp b/llvm/lib/Transforms/IPO/SimplifyLibCalls.cpp
index cc638be..a776d38 100644
--- a/llvm/lib/Transforms/IPO/SimplifyLibCalls.cpp
+++ b/llvm/lib/Transforms/IPO/SimplifyLibCalls.cpp
@@ -205,8 +205,7 @@
args.push_back(PointerType::get(Type::SByteTy));
args.push_back(Type::IntTy);
args.push_back(Type::IntTy);
- memcpy_type = FunctionType::get(
- PointerType::get(Type::SByteTy), args, false);
+ memcpy_type = FunctionType::get(Type::VoidTy, args, false);
}
return memcpy_type;
}
@@ -568,10 +567,7 @@
switch (len)
{
case 0:
- // Just replace with the destination parameter since a zero length
- // memcpy is a no-op.
- ci->replaceAllUsesWith(
- new CastInst(dest,PointerType::get(Type::VoidTy),"",ci));
+ // The memcpy is a no-op so just dump its call.
ci->eraseFromParent();
return true;
case 1:
@@ -595,8 +591,6 @@
}
LoadInst* LI = new LoadInst(SrcCast,"",ci);
StoreInst* SI = new StoreInst(LI, DestCast, ci);
- ci->replaceAllUsesWith(
- new CastInst(dest,PointerType::get(Type::VoidTy),"",ci));
ci->eraseFromParent();
return true;
}