| Benjamin Kramer | 06f25cf | 2010-09-29 21:50:51 +0000 | [diff] [blame] | 1 | ; Test that the StrRChrOptimizer works correctly |
| 2 | ; RUN: opt < %s -simplify-libcalls -S | FileCheck %s |
| 3 | |
| 4 | target datalayout = "-p:64:64:64" |
| 5 | |
| 6 | @hello = constant [14 x i8] c"hello world\5Cn\00" |
| 7 | @null = constant [1 x i8] zeroinitializer |
| 8 | |
| 9 | declare i8* @strrchr(i8*, i32) |
| 10 | |
| 11 | define void @foo(i8* %bar) { |
| 12 | %hello_p = getelementptr [14 x i8]* @hello, i32 0, i32 0 |
| 13 | %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0 |
| 14 | %world = call i8* @strrchr(i8* %hello_p, i32 119) |
| 15 | ; CHECK: getelementptr i8* %hello_p, i64 6 |
| 16 | %ignore = call i8* @strrchr(i8* %null_p, i32 119) |
| 17 | ; CHECK-NOT: call i8* strrchr |
| 18 | %null = call i8* @strrchr(i8* %hello_p, i32 0) |
| 19 | ; CHECK: getelementptr i8* %hello_p, i64 13 |
| 20 | %strchr = call i8* @strrchr(i8* %bar, i32 0) |
| 21 | ; CHECK: call i8* @strchr(i8* %bar, i32 0) |
| 22 | ret void |
| 23 | } |