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 } 24
