From 67a806ed90a25d80989f247aff956bfcd40a0dcc Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 21 Aug 2002 22:10:52 +0000
Subject: Do not create load/stores with indexes

llvm-svn: 3420
---
 llvm/lib/Transforms/IPO/MutateStructTypes.cpp | 30 ++++++++++++++-------------
 1 file changed, 16 insertions(+), 14 deletions(-)

(limited to 'llvm/lib/Transforms')

diff --git a/llvm/lib/Transforms/IPO/MutateStructTypes.cpp b/llvm/lib/Transforms/IPO/MutateStructTypes.cpp
index f0dc16f3e2b..2059f9f2a90 100644
--- a/llvm/lib/Transforms/IPO/MutateStructTypes.cpp
+++ b/llvm/lib/Transforms/IPO/MutateStructTypes.cpp
@@ -413,26 +413,28 @@ void MutateStructTypes::transformFunction(Function *m) {
         break;
 
       case Instruction::Load:
+        assert(cast<MemAccessInst>(I).idx_begin() ==
+               cast<MemAccessInst>(I).idx_end() &&
+               "Indexing loads not supported!");
+        NewI = new LoadInst(ConvertValue(I.getOperand(0)));
+        break;
       case Instruction::Store:
+        assert(cast<MemAccessInst>(I).idx_begin() ==
+               cast<MemAccessInst>(I).idx_end() &&
+               "Indexing loads not supported!");
+        NewI = new StoreInst(ConvertValue(I.getOperand(0)),
+                             ConvertValue(I.getOperand(1)));
+        break;
       case Instruction::GetElementPtr: {
-        const MemAccessInst &MAI = cast<MemAccessInst>(I);
-        vector<Value*> Indices(MAI.idx_begin(), MAI.idx_end());
-        const Value *Ptr = MAI.getPointerOperand();
-        Value *NewPtr = ConvertValue(Ptr);
+        const GetElementPtrInst &GEP = cast<GetElementPtrInst>(I);
+        vector<Value*> Indices(GEP.idx_begin(), GEP.idx_end());
         if (!Indices.empty()) {
-          const Type *PTy = cast<PointerType>(Ptr->getType())->getElementType();
+          const Type *PTy =
+            cast<PointerType>(GEP.getOperand(0)->getType())->getElementType();
           AdjustIndices(cast<CompositeType>(PTy), Indices);
         }
 
-        if (isa<LoadInst>(I)) {
-          NewI = new LoadInst(NewPtr, Indices);
-        } else if (isa<StoreInst>(I)) {
-          NewI = new StoreInst(ConvertValue(I.getOperand(0)), NewPtr, Indices);
-        } else if (isa<GetElementPtrInst>(I)) {
-          NewI = new GetElementPtrInst(NewPtr, Indices);
-        } else {
-          assert(0 && "Unknown memory access inst!!!");
-        }
+        NewI = new GetElementPtrInst(ConvertValue(GEP.getOperand(0)), Indices);
         break;
       }
 
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