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Testcase for PR1421

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37357 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-05-30 06:10:46 +00:00
parent ad5ace4038
commit 661c2ce9c5
1 changed files with 23 additions and 0 deletions
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test/Transforms/ScalarRepl/2007-05-29-MemcpyPreserve.ll Normal file
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; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | grep memcpy
; PR1421
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"
target triple = "i686-apple-darwin8"
%struct.LongestMember = type { i8, i32 }
%struct.MyString = type { i32 }
%struct.UnionType = type { %struct.LongestMember }
define void @_Z4testP9UnionTypePS0_(%struct.UnionType* %p, %struct.UnionType** %pointerToUnion) {
entry:
%tmp = alloca %struct.UnionType, align 8 ; <%struct.UnionType*> [#uses=2]
%tmp2 = getelementptr %struct.UnionType* %tmp, i32 0, i32 0, i32 0 ; <i8*> [#uses=1]
%tmp13 = getelementptr %struct.UnionType* %p, i32 0, i32 0, i32 0 ; <i8*> [#uses=1]
call void @llvm.memcpy.i32( i8* %tmp2, i8* %tmp13, i32 8, i32 0 )
%tmp5 = load %struct.UnionType** %pointerToUnion ; <%struct.UnionType*> [#uses=1]
%tmp56 = getelementptr %struct.UnionType* %tmp5, i32 0, i32 0, i32 0 ; <i8*> [#uses=1]
%tmp7 = getelementptr %struct.UnionType* %tmp, i32 0, i32 0, i32 0 ; <i8*> [#uses=1]
call void @llvm.memcpy.i32( i8* %tmp56, i8* %tmp7, i32 8, i32 0 )
ret void
}
declare void @llvm.memcpy.i32(i8*, i8*, i32, i32)