From 31a4ef4dc19b0c04c243cb2485d0a6cd44d799eb Mon Sep 17 00:00:00 2001
From: Reid Spencer <rspencer@reidspencer.com>
Date: Mon, 22 Jan 2007 05:51:25 +0000
Subject: [PATCH] Cleanup checks in the load and store of casted pointer
 transforms. Two changes: (1) don't special case for i1 any more, (2) use the
 new TargetData::getTypeSizeInBits method to ensure source and dest are the
 same bit width.

llvm-svn: 33427
---
 .../Transforms/Scalar/InstructionCombining.cpp    | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
index a87a8ad575c6..d38c7c46c2ce 100644
--- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -7990,8 +7990,8 @@ static Instruction *InstCombineLoadCast(InstCombiner &IC, LoadInst &LI) {
   if (const PointerType *SrcTy = dyn_cast<PointerType>(CastOp->getType())) {
     const Type *SrcPTy = SrcTy->getElementType();
 
-    if ((DestPTy->isInteger() && DestPTy != Type::Int1Ty) ||
-        isa<PointerType>(DestPTy) || isa<PackedType>(DestPTy)) {
+    if (DestPTy->isInteger() || isa<PointerType>(DestPTy) || 
+         isa<PackedType>(DestPTy)) {
       // If the source is an array, the code below will not succeed.  Check to
       // see if a trivial 'gep P, 0, 0' will help matters.  Only do this for
       // constants.
@@ -8004,13 +8004,13 @@ static Instruction *InstCombineLoadCast(InstCombiner &IC, LoadInst &LI) {
             SrcPTy = SrcTy->getElementType();
           }
 
-      if (((SrcPTy->isInteger() && SrcPTy != Type::Int1Ty) ||
-           isa<PointerType>(SrcPTy) || isa<PackedType>(SrcPTy)) &&
+      if ((SrcPTy->isInteger() || isa<PointerType>(SrcPTy) || 
+            isa<PackedType>(SrcPTy)) &&
           // Do not allow turning this into a load of an integer, which is then
           // casted to a pointer, this pessimizes pointer analysis a lot.
           (isa<PointerType>(SrcPTy) == isa<PointerType>(LI.getType())) &&
-          IC.getTargetData().getTypeSize(SrcPTy) ==
-               IC.getTargetData().getTypeSize(DestPTy)) {
+          IC.getTargetData().getTypeSizeInBits(SrcPTy) ==
+               IC.getTargetData().getTypeSizeInBits(DestPTy)) {
 
         // Okay, we are casting from one integer or pointer type to another of
         // the same size.  Instead of casting the pointer before the load, cast
@@ -8178,8 +8178,7 @@ static Instruction *InstCombineStoreToCast(InstCombiner &IC, StoreInst &SI) {
   if (const PointerType *SrcTy = dyn_cast<PointerType>(CastOp->getType())) {
     const Type *SrcPTy = SrcTy->getElementType();
 
-    if ((DestPTy->isInteger() && DestPTy != Type::Int1Ty) ||
-        isa<PointerType>(DestPTy)) {
+    if (DestPTy->isInteger() || isa<PointerType>(DestPTy)) {
       // If the source is an array, the code below will not succeed.  Check to
       // see if a trivial 'gep P, 0, 0' will help matters.  Only do this for
       // constants.