Author: lattner Date: Thu Jan 24 13:07:10 2008 New Revision: 46318 URL: http://llvm.org/viewvc/llvm-project?rev=46318&view=rev Log: getUnderlyingObject can return null, handle this.
Modified: llvm/trunk/lib/Analysis/BasicAliasAnalysis.cpp Modified: llvm/trunk/lib/Analysis/BasicAliasAnalysis.cpp URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/BasicAliasAnalysis.cpp?rev=46318&r1=46317&r2=46318&view=diff ============================================================================== --- llvm/trunk/lib/Analysis/BasicAliasAnalysis.cpp (original) +++ llvm/trunk/lib/Analysis/BasicAliasAnalysis.cpp Thu Jan 24 13:07:10 2008 @@ -245,8 +245,9 @@ if (!isa<Constant>(P)) { const Value *Object = getUnderlyingObject(P); // Allocations and byval arguments are "new" objects. - if (isa<AllocationInst>(Object) || - (isa<Argument>(Object) && cast<Argument>(Object)->hasByValAttr())) { + if (Object && + (isa<AllocationInst>(Object) || + (isa<Argument>(Object) && cast<Argument>(Object)->hasByValAttr()))) { // Okay, the pointer is to a stack allocated object. If we can prove that // the pointer never "escapes", then we know the call cannot clobber it, // because it simply can't get its address. _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits