From 680ee9f63481b696544a27b1c92e44d182a90a75 Mon Sep 17 00:00:00 2001 From: "Vikram S. Adve" Date: Wed, 4 Jun 2003 02:10:37 +0000 Subject: Undo one of those last fixes -- it was incorrect. llvm-svn: 6593 --- llvm/lib/Target/TargetData.cpp | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'llvm/lib') diff --git a/llvm/lib/Target/TargetData.cpp b/llvm/lib/Target/TargetData.cpp index ede96f7aaed..bdeb4e99c6a 100644 --- a/llvm/lib/Target/TargetData.cpp +++ b/llvm/lib/Target/TargetData.cpp @@ -193,10 +193,12 @@ uint64_t TargetData::getIndexedOffset(const Type *ptrTy, Ty = cast(Ty)->getElementType(); // Get the array index and the size of each array element. - // Both must be known constants, or the index shd be 0; else this fails. + // The size must be a known value, except if arrayIdx is 0. + // In particular, don't try to get the type size if the arrayIdx is 0: + // 0 index into an unsized type is legal and should be allowed. int64_t arrayIdx = cast(Idx[CurIDX])->getValue(); - Result += arrayIdx * (int64_t)getTypeSize(Ty); - + Result += arrayIdx == 0? 0 + : arrayIdx * (int64_t)getTypeSize(Ty); } else { const StructType *STy = cast(Ty); assert(Idx[CurIDX]->getType() == Type::UByteTy && "Illegal struct idx"); -- cgit v1.2.3