Author: lattner
Date: Tue Oct 13 01:04:29 2009
New Revision: 83948
URL: http://llvm.org/viewvc/llvm-project?rev=83948&view=rev
Log:
number address-taken labels from 1. This allows 0 to be used as a sentinel
for a null pointer. In other words, "&&foo != NULL" will always work out to
true.
Modified:
cfe/trunk/lib/CodeGen/CodeGenFunction.cpp
Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.cpp?rev=83948&r1=83947&r2=83948&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.cpp (original)
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.cpp Tue Oct 13 01:04:29 2009
@@ -444,7 +444,7 @@
unsigned CodeGenFunction::GetIDForAddrOfLabel(const LabelStmt *L) {
// Use LabelIDs.size() as the new ID if one hasn't been assigned.
- return LabelIDs.insert(std::make_pair(L, LabelIDs.size())).first->second;
+ return LabelIDs.insert(std::make_pair(L, LabelIDs.size()+1)).first->second;
}
void CodeGenFunction::EmitMemSetToZero(llvm::Value *DestPtr, QualType Ty) {
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