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// RUN: %libomp-cxx20-compile-and-run | FileCheck %s --match-full-lines
#ifndef HEADER
#define HEADER
#include <cstdlib>
#include <cstdarg>
#include <cstdio>
#include <vector>
struct Reporter {
const char *name;
Reporter(const char *name) : name(name) { print("ctor"); }
Reporter() : name("<anon>") { print("ctor"); }
Reporter(const Reporter &that) : name(that.name) { print("copy ctor"); }
Reporter(Reporter &&that) : name(that.name) { print("move ctor"); }
~Reporter() { print("dtor"); }
const Reporter &operator=(const Reporter &that) {
print("copy assign");
this->name = that.name;
return *this;
}
const Reporter &operator=(Reporter &&that) {
print("move assign");
this->name = that.name;
return *this;
}
struct Iterator {
const Reporter *owner;
int pos;
Iterator(const Reporter *owner, int pos) : owner(owner), pos(pos) {}
Iterator(const Iterator &that) : owner(that.owner), pos(that.pos) {
owner->print("iterator copy ctor");
}
Iterator(Iterator &&that) : owner(that.owner), pos(that.pos) {
owner->print("iterator move ctor");
}
~Iterator() { owner->print("iterator dtor"); }
const Iterator &operator=(const Iterator &that) {
owner->print("iterator copy assign");
this->owner = that.owner;
this->pos = that.pos;
return *this;
}
const Iterator &operator=(Iterator &&that) {
owner->print("iterator move assign");
this->owner = that.owner;
this->pos = that.pos;
return *this;
}
bool operator==(const Iterator &that) const {
owner->print("iterator %d == %d", 2 - this->pos, 2 - that.pos);
return this->pos == that.pos;
}
Iterator &operator++() {
owner->print("iterator prefix ++");
pos -= 1;
return *this;
}
Iterator operator++(int) {
owner->print("iterator postfix ++");
auto result = *this;
pos -= 1;
return result;
}
int operator*() const {
int result = 2 - pos;
owner->print("iterator deref: %i", result);
return result;
}
size_t operator-(const Iterator &that) const {
int result = (2 - this->pos) - (2 - that.pos);
owner->print("iterator distance: %d", result);
return result;
}
Iterator operator+(int steps) const {
owner->print("iterator advance: %i += %i", 2 - this->pos, steps);
return Iterator(owner, pos - steps);
}
void print(const char *msg) const { owner->print(msg); }
};
Iterator begin() const {
print("begin()");
return Iterator(this, 2);
}
Iterator end() const {
print("end()");
return Iterator(this, -1);
}
void print(const char *msg, ...) const {
va_list args;
va_start(args, msg);
printf("[%s] ", name);
vprintf(msg, args);
printf("\n");
va_end(args);
}
};
int main() {
printf("do\n");
#pragma omp reverse
for (Reporter c{"init-stmt"}; auto &&v : Reporter("range"))
printf("v=%d\n", v);
printf("done\n");
return EXIT_SUCCESS;
}
#endif /* HEADER */
// CHECK: do
// CHECK-NEXT: [init-stmt] ctor
// CHECK-NEXT: [range] ctor
// CHECK-NEXT: [range] end()
// CHECK-NEXT: [range] begin()
// CHECK-NEXT: [range] begin()
// CHECK-NEXT: [range] iterator distance: 3
// CHECK-NEXT: [range] iterator advance: 0 += 2
// CHECK-NEXT: [range] iterator move assign
// CHECK-NEXT: [range] iterator deref: 2
// CHECK-NEXT: v=2
// CHECK-NEXT: [range] iterator dtor
// CHECK-NEXT: [range] iterator advance: 0 += 1
// CHECK-NEXT: [range] iterator move assign
// CHECK-NEXT: [range] iterator deref: 1
// CHECK-NEXT: v=1
// CHECK-NEXT: [range] iterator dtor
// CHECK-NEXT: [range] iterator advance: 0 += 0
// CHECK-NEXT: [range] iterator move assign
// CHECK-NEXT: [range] iterator deref: 0
// CHECK-NEXT: v=0
// CHECK-NEXT: [range] iterator dtor
// CHECK-NEXT: [range] iterator dtor
// CHECK-NEXT: [range] iterator dtor
// CHECK-NEXT: [range] iterator dtor
// CHECK-NEXT: [range] dtor
// CHECK-NEXT: [init-stmt] dtor
// CHECK-NEXT: done
|
