From 8e22ead3b48ca344347ceda58f80b7d98b0f0364 Mon Sep 17 00:00:00 2001 From: "Vikram S. Adve" Date: Sun, 13 Oct 2002 21:47:44 +0000 Subject: [PATCH] Don't try to compute the size of an "array" element if the index is 0: the size may be unknown, and is not needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4153 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/TargetData.cpp | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/lib/Target/TargetData.cpp b/lib/Target/TargetData.cpp index ec27d9e028e..fae5e103e66 100644 --- a/lib/Target/TargetData.cpp +++ b/lib/Target/TargetData.cpp @@ -170,11 +170,10 @@ 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 this will fail. - // Also, the product needs to be sign-extended from 32 to 64 bits. - int64_t elementSize = (int64_t)getTypeSize(Ty); + // Both must be known constants, or the index shd be 0; else this fails. int64_t arrayIdx = cast(Idx[CurIDX])->getValue(); - Result += (uint64_t)(arrayIdx * elementSize); + Result += arrayIdx == 0? 0 + : (uint64_t) (arrayIdx * (int64_t) getTypeSize(Ty)); } else if (const StructType *STy = dyn_cast(Ty)) { assert(Idx[CurIDX]->getType() == Type::UByteTy && "Illegal struct idx");