| ; Test that the StrRChrOptimizer works correctly |
| ; RUN: opt < %s -simplify-libcalls -S | FileCheck %s |
| |
| target datalayout = "-p:64:64:64" |
| |
| @hello = constant [14 x i8] c"hello world\5Cn\00" |
| @null = constant [1 x i8] zeroinitializer |
| |
| declare i8* @strrchr(i8*, i32) |
| |
| define void @foo(i8* %bar) { |
| %hello_p = getelementptr [14 x i8]* @hello, i32 0, i32 0 |
| %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0 |
| %world = call i8* @strrchr(i8* %hello_p, i32 119) |
| ; CHECK: getelementptr i8* %hello_p, i64 6 |
| %ignore = call i8* @strrchr(i8* %null_p, i32 119) |
| ; CHECK-NOT: call i8* strrchr |
| %null = call i8* @strrchr(i8* %hello_p, i32 0) |
| ; CHECK: getelementptr i8* %hello_p, i64 13 |
| %strchr = call i8* @strrchr(i8* %bar, i32 0) |
| ; CHECK: call i8* @strchr(i8* %bar, i32 0) |
| ret void |
| } |
