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Fix PR3335 by not turning a store to one address space into a store to another.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62351 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-01-16 20:12:52 +00:00
parent 1b8eaf5109
commit 71759c491c
2 changed files with 16 additions and 1 deletions
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6
lib/Transforms/Scalar/InstructionCombining.cpp
View File

@ -11169,7 +11169,11 @@ static Instruction *InstCombineStoreToCast(InstCombiner &IC, StoreInst &SI) {
if (!SrcPTy->isInteger() && !isa<PointerType>(SrcPTy))
return 0;
if (IC.getTargetData().getTypeSizeInBits(SrcPTy) !=
// If the pointers point into different address spaces or if they point to
// values with different sizes, we can't do the transformation.
if (SrcTy->getAddressSpace() !=
cast<PointerType>(CI->getType())->getAddressSpace() ||
IC.getTargetData().getTypeSizeInBits(SrcPTy) !=
IC.getTargetData().getTypeSizeInBits(DestPTy))
return 0;

11
test/Transforms/InstCombine/2009-01-16-PointerAddrSpace.ll Normal file
View File

@ -0,0 +1,11 @@
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {store.*addrspace(1)}
; PR3335
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin9.6"
define i32 @test(i32* %P) nounwind {
entry:
%Q = bitcast i32* %P to i32 addrspace(1)*
store i32 0, i32 addrspace(1)* %Q, align 4
ret i32 0
}