| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 1 | ; Test that the StrChrOptimizer works correctly |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 2 | ; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | \ |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 3 | ; RUN: not grep {call.*%strchr} |
| 4 | |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 5 | @hello = constant [14 x i8] c"hello world\5Cn\00" ; <[14 x i8]*> [#uses=1] |
| 6 | @null = constant [1 x i8] zeroinitializer ; <[1 x i8]*> [#uses=1] |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 7 | |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 8 | declare i8* @strchr(i8*, i32) |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 9 | |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 10 | declare i32 @puts(i8*) |
| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame] | 11 | |
| Tanya Lattner | 003eae5 | 2008-03-10 07:21:50 +0000 | [diff] [blame^] | 12 | define i32 @main() { |
| 13 | %hello_p = getelementptr [14 x i8]* @hello, i32 0, i32 0 ; <i8*> [#uses=2] |
| 14 | %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0 ; <i8*> [#uses=1] |
| 15 | %world = call i8* @strchr( i8* %hello_p, i32 119 ) ; <i8*> [#uses=1] |
| 16 | %ignore = call i8* @strchr( i8* %null_p, i32 119 ) ; <i8*> [#uses=0] |
| 17 | %len = call i32 @puts( i8* %world ) ; <i32> [#uses=1] |
| 18 | %index = add i32 %len, 112 ; <i32> [#uses=2] |
| 19 | %result = call i8* @strchr( i8* %hello_p, i32 %index ) ; <i8*> [#uses=0] |
| 20 | ret i32 %index |
| 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 | |