| Reid Spencer | e589cc4 | 2005-04-29 23:02:15 +0000 | [diff] [blame] | 1 | ; Test that the StrCpyOptimizer works correctly |
| Tanya Lattner | ceca194 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 2 | ; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | \ |
| Reid Spencer | 43b4003 | 2007-04-16 15:31:49 +0000 | [diff] [blame] | 3 | ; RUN: not grep {call.*strcpy} |
| Reid Spencer | 45254f7 | 2005-04-29 06:01:28 +0000 | [diff] [blame] | 4 | |
| Tanya Lattner | ceca194 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 5 | @hello = constant [6 x i8] c"hello\00" ; <[6 x i8]*> [#uses=1] |
| 6 | @null = constant [1 x i8] zeroinitializer ; <[1 x i8]*> [#uses=1] |
| 7 | @null_hello = constant [7 x i8] c"\00hello\00" ; <[7 x i8]*> [#uses=1] |
| Reid Spencer | 45254f7 | 2005-04-29 06:01:28 +0000 | [diff] [blame] | 8 | |
| Tanya Lattner | ceca194 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 9 | declare i8* @strcpy(i8*, i8*) |
| Reid Spencer | 45254f7 | 2005-04-29 06:01:28 +0000 | [diff] [blame] | 10 | |
| Tanya Lattner | ceca194 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 11 | declare i32 @puts(i8*) |
| 12 | |
| 13 | define i32 @main() { |
| 14 | %target = alloca [1024 x i8] ; <[1024 x i8]*> [#uses=1] |
| 15 | %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0 ; <i8*> [#uses=2] |
| 16 | store i8 0, i8* %arg1 |
| 17 | %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0 ; <i8*> [#uses=1] |
| 18 | %rslt1 = call i8* @strcpy( i8* %arg1, i8* %arg2 ) ; <i8*> [#uses=1] |
| 19 | %arg3 = getelementptr [1 x i8]* @null, i32 0, i32 0 ; <i8*> [#uses=1] |
| 20 | %rslt2 = call i8* @strcpy( i8* %rslt1, i8* %arg3 ) ; <i8*> [#uses=1] |
| 21 | %arg4 = getelementptr [7 x i8]* @null_hello, i32 0, i32 0 ; <i8*> [#uses=1] |
| 22 | %rslt3 = call i8* @strcpy( i8* %rslt2, i8* %arg4 ) ; <i8*> [#uses=1] |
| 23 | call i32 @puts( i8* %rslt3 ) ; <i32>:1 [#uses=0] |
| 24 | ret i32 0 |
| Reid Spencer | 45254f7 | 2005-04-29 06:01:28 +0000 | [diff] [blame] | 25 | } |
| Tanya Lattner | ceca194 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 26 | |