| Dan Gohman | 19e30d5 | 2011-01-21 22:07:57 +0000 | [diff] [blame] | 1 | ; RUN: opt -memcpyopt -S < %s | FileCheck %s |
| Sean Silva | 6347df0 | 2016-06-14 02:44:55 +0000 | [diff] [blame] | 2 | ; RUN: opt -passes=memcpyopt -S < %s | FileCheck %s |
| Dan Gohman | 19e30d5 | 2011-01-21 22:07:57 +0000 | [diff] [blame] | 3 | ; rdar://8875553 |
| 4 | |
| 5 | ; Memcpyopt shouldn't optimize the second memcpy using the first |
| 6 | ; because the first has a smaller size. |
| 7 | |
| Pete Cooper | 67cf9a7 | 2015-11-19 05:56:52 +0000 | [diff] [blame] | 8 | ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp, i8* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i32 16, i32 4, i1 false) |
| Dan Gohman | 19e30d5 | 2011-01-21 22:07:57 +0000 | [diff] [blame] | 9 | |
| 10 | target datalayout = "e-p:32:32:32" |
| 11 | |
| 12 | %struct.s = type { [11 x i8], i32 } |
| 13 | |
| 14 | @.str = private constant [11 x i8] c"0123456789\00" |
| 15 | @cell = external global %struct.s |
| 16 | |
| 17 | declare void @check(%struct.s* byval %p) nounwind |
| Pete Cooper | 67cf9a7 | 2015-11-19 05:56:52 +0000 | [diff] [blame] | 18 | declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind |
| Dan Gohman | 19e30d5 | 2011-01-21 22:07:57 +0000 | [diff] [blame] | 19 | |
| 20 | define void @foo() nounwind { |
| 21 | entry: |
| 22 | %agg.tmp = alloca %struct.s, align 4 |
| David Blaikie | f72d05b | 2015-03-13 18:20:45 +0000 | [diff] [blame] | 23 | store i32 99, i32* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 1), align 4 |
| Pete Cooper | 67cf9a7 | 2015-11-19 05:56:52 +0000 | [diff] [blame] | 24 | call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i32 11, i32 1, i1 false) |
| David Blaikie | 79e6c74 | 2015-02-27 19:29:02 +0000 | [diff] [blame] | 25 | %tmp = getelementptr inbounds %struct.s, %struct.s* %agg.tmp, i32 0, i32 0, i32 0 |
| Pete Cooper | 67cf9a7 | 2015-11-19 05:56:52 +0000 | [diff] [blame] | 26 | call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp, i8* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i32 16, i32 4, i1 false) |
| Dan Gohman | 19e30d5 | 2011-01-21 22:07:57 +0000 | [diff] [blame] | 27 | call void @check(%struct.s* byval %agg.tmp) |
| 28 | ret void |
| 29 | } |