| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 1 | ; Test that the StrCatOptimizer works correctly |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 2 | ; RUN: llvm-as < %s | opt -constprop -simplify-libcalls | \ |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 3 | ; RUN: llvm-dis | not grep {call.*llvm.memcpy.i32} |
| 4 | |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 5 | @h = constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=1] |
| 6 | @hel = constant [4 x i8] c"hel\00" ; <[4 x i8]*> [#uses=1] |
| 7 | @hello_u = constant [8 x i8] c"hello_u\00" ; <[8 x i8]*> [#uses=1] |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 8 | |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 9 | declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 10 | |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 11 | define i32 @main() { |
| 12 | %h_p = getelementptr [2 x i8]* @h, i32 0, i32 0 ; <i8*> [#uses=1] |
| 13 | %hel_p = getelementptr [4 x i8]* @hel, i32 0, i32 0 ; <i8*> [#uses=1] |
| 14 | %hello_u_p = getelementptr [8 x i8]* @hello_u, i32 0, i32 0 ; <i8*> [#uses=1] |
| 15 | %target = alloca [1024 x i8] ; <[1024 x i8]*> [#uses=1] |
| 16 | %target_p = getelementptr [1024 x i8]* %target, i32 0, i32 0 ; <i8*> [#uses=3] |
| 17 | call void @llvm.memcpy.i32( i8* %target_p, i8* %h_p, i32 2, i32 2 ) |
| 18 | call void @llvm.memcpy.i32( i8* %target_p, i8* %hel_p, i32 4, i32 4 ) |
| 19 | call void @llvm.memcpy.i32( i8* %target_p, i8* %hello_u_p, i32 8, i32 8 ) |
| 20 | ret i32 0 |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 21 | } |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 22 | |