1; RUN: opt -memcpyopt -S < %s | FileCheck %s
2; rdar://8875553
3
4; Memcpyopt shouldn't optimize the second memcpy using the first
5; because the first has a smaller size.
6
7; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp, i8* getelementptr inbounds (%struct.s* @cell, i32 0, i32 0, i32 0), i32 16, i32 4, i1 false)
8
9target datalayout = "e-p:32:32:32"
10
11%struct.s = type { [11 x i8], i32 }
12
13@.str = private constant [11 x i8] c"0123456789\00"
14@cell = external global %struct.s
15
16declare void @check(%struct.s* byval %p) nounwind
17declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
18
19define void @foo() nounwind {
20entry:
21  %agg.tmp = alloca %struct.s, align 4
22  store i32 99, i32* getelementptr inbounds (%struct.s* @cell, i32 0, i32 1), align 4
23  call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds (%struct.s* @cell, i32 0, i32 0, i32 0), i8* getelementptr inbounds ([11 x i8]* @.str, i32 0, i32 0), i32 11, i32 1, i1 false)
24  %tmp = getelementptr inbounds %struct.s* %agg.tmp, i32 0, i32 0, i32 0
25  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp, i8* getelementptr inbounds (%struct.s* @cell, i32 0, i32 0, i32 0), i32 16, i32 4, i1 false)
26  call void @check(%struct.s* byval %agg.tmp)
27  ret void
28}
29