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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; Test that the strpbrk library call simplifier works correctly.3;4; RUN: opt < %s -passes=instcombine -S | FileCheck %s5 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] zeroinitializer11 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 null19;20 21 %ret = call ptr @strpbrk(ptr %str, ptr @null)22 ret ptr %ret23}24 25; Check strpbrk("", s) -> NULL.26 27define ptr @test_simplify2(ptr %pat) {28; CHECK-LABEL: @test_simplify2(29; CHECK-NEXT: ret ptr null30;31 32 %ret = call ptr @strpbrk(ptr @null, ptr %pat)33 ret ptr %ret34}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 %ret45}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 %ret57}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 %ret69}70