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