1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; Test that the strpbrk library call simplifier works correctly. 3; 4; RUN: opt < %s -passes=instcombine -S | FileCheck %s 5 6target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" 7 8@hello = constant [12 x i8] c"hello world\00" 9@w = constant [2 x i8] c"w\00" 10@null = constant [1 x i8] zeroinitializer 11 12declare ptr @strpbrk(ptr, ptr) 13 14; Check strpbrk(s, "") -> NULL. 15 16define ptr @test_simplify1(ptr %str) { 17; CHECK-LABEL: @test_simplify1( 18; CHECK-NEXT: ret ptr null 19; 20 21 %ret = call ptr @strpbrk(ptr %str, ptr @null) 22 ret ptr %ret 23} 24 25; Check strpbrk("", s) -> NULL. 26 27define ptr @test_simplify2(ptr %pat) { 28; CHECK-LABEL: @test_simplify2( 29; CHECK-NEXT: ret ptr null 30; 31 32 %ret = call ptr @strpbrk(ptr @null, ptr %pat) 33 ret ptr %ret 34} 35 36; Check strpbrk(s1, s2), where s1 and s2 are constants. 37 38define ptr @test_simplify3() { 39; CHECK-LABEL: @test_simplify3( 40; CHECK-NEXT: ret ptr getelementptr inbounds nuw (i8, ptr @hello, i32 6) 41; 42 43 %ret = call ptr @strpbrk(ptr @hello, ptr @w) 44 ret ptr %ret 45} 46 47; Check strpbrk(s, "a") -> strchr(s, 'a'). 48 49define ptr @test_simplify4(ptr %str) { 50; CHECK-LABEL: @test_simplify4( 51; CHECK-NEXT: [[STRCHR:%.*]] = call ptr @strchr(ptr noundef nonnull dereferenceable(1) [[STR:%.*]], i32 119) 52; CHECK-NEXT: ret ptr [[STRCHR]] 53; 54 55 %ret = call ptr @strpbrk(ptr %str, ptr @w) 56 ret ptr %ret 57} 58 59; Check cases that shouldn't be simplified. 60 61define ptr @test_no_simplify1(ptr %str, ptr %pat) { 62; CHECK-LABEL: @test_no_simplify1( 63; CHECK-NEXT: [[RET:%.*]] = call ptr @strpbrk(ptr [[STR:%.*]], ptr [[PAT:%.*]]) 64; CHECK-NEXT: ret ptr [[RET]] 65; 66 67 %ret = call ptr @strpbrk(ptr %str, ptr %pat) 68 ret ptr %ret 69} 70