1 ; Test that the StrChrOptimizer works correctly
2 ; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
4 ; This transformation requires the pointer size, as it assumes that size_t is
5 ; the size of a pointer.
6 target datalayout = "-p:64:64:64"
8 @hello = constant [14 x i8] c"hello world\5Cn\00"
9 @null = constant [1 x i8] zeroinitializer
11 declare i8* @strchr(i8*, i32)
13 define i32 @foo(i32 %index) {
14 %hello_p = getelementptr [14 x i8]* @hello, i32 0, i32 0
15 %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0
16 %world = call i8* @strchr(i8* %hello_p, i32 119)
17 ; CHECK: getelementptr i8* %hello_p, i64 6
18 %ignore = call i8* @strchr(i8* %null_p, i32 119)
19 ; CHECK-NOT: call i8* strchr
20 %null = call i8* @strchr(i8* %hello_p, i32 0)
21 ; CHECK: getelementptr i8* %hello_p, i64 13
22 %result = call i8* @strchr(i8* %hello_p, i32 %index)
23 ; CHECK: call i8* @memchr(i8* %hello_p, i32 %index, i64 14)