File: cxx2b-static-subscript-operator.cpp

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (66 lines) | stat: -rw-r--r-- 1,877 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
// RUN: %clang_cc1 -std=c++23 %s -emit-llvm -triple x86_64-linux -o - | FileCheck %s
// RUN: %clang_cc1 -std=c++23 %s -emit-llvm -triple x86_64-windows-msvc -o - | FileCheck %s

struct Functor {
  static int operator[](int x, int y) {
    return x + y;
  }
};

void call_static_subscript_operator() {
  Functor f;
  f[101, 102];
  f.operator[](201, 202);
  Functor{}[301, 302];
  Functor::operator[](401, 402);
}

// CHECK:      define {{.*}}call_static_subscript_operator{{.*}}
// CHECK-NEXT: entry:
// CHECK:        {{.*}} = call noundef i32 {{.*}}Functor{{.*}}(i32 noundef 101, i32 noundef 102)
// CHECK-NEXT:   {{.*}} = call noundef i32 {{.*}}Functor{{.*}}(i32 noundef 201, i32 noundef 202)
// CHECK-NEXT:   {{.*}} = call noundef i32 {{.*}}Functor{{.*}}(i32 noundef 301, i32 noundef 302)
// CHECK-NEXT:   {{.*}} = call noundef i32 {{.*}}Functor{{.*}}(i32 noundef 401, i32 noundef 402)
// CHECK-NEXT:   ret void
// CHECK-NEXT: }

struct FunctorConsteval {
  consteval static int operator[](int x, int y) {
      return x + y;
  }
};

struct FunctorConstexpr {
  constexpr static int operator[](int x, int y) {
      return x + y;
  }
};

void test_consteval_constexpr() {
  int x = 0;
  int y = FunctorConstexpr{}[x, 2];
  constexpr int z1 = FunctorConsteval{}[2, 2];
  constexpr int z2 = FunctorConstexpr{}[2, 2];
  
  static_assert(z1 == 4);
  static_assert(z2 == 4);
}

template <class T>
struct DepFunctor {
  static int operator[](T t) {
    return int(t);
  }
};

void test_dep_functors() {
  int x = DepFunctor<float>{}[1.0f];
  int y = DepFunctor<bool>{}[true];
}

// CHECK:      define {{.*}}test_dep_functors{{.*}}
// CHECK-NEXT: entry:
// CHECK:        %call = call noundef i32 {{.*}}DepFunctor{{.*}}(float noundef 1.000000e+00)
// CHECK:        %call1 = call noundef i32 {{.*}}DepFunctor{{.*}}(i1 noundef zeroext true)
// CHECK:        ret void
// CHECK-NEXT: }