| Dan Gohman | 8fb25c5 | 2011-01-21 22:07:57 +0000 | [diff] [blame] | 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 | |
| 9 | target 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 | |
| 16 | declare void @check(%struct.s* byval %p) nounwind |
| 17 | declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind |
| 18 | |
| 19 | define void @foo() nounwind { |
| 20 | entry: |
| 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 | } |