ba15d186e5
During the ISO C++ Committee meeting plenary session the C++23 Standard has been voted as technical complete. This updates the reference to c++2b to c++23 and updates the __cplusplus macro. Drive-by fixes c++1z -> c++17 and c++2a -> c++20 when seen. Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D149553
56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
// RUN: %clang_cc1 -std=c++23 %s -emit-llvm -o - | FileCheck %s
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void should_be_used_1();
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void should_be_used_2();
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void should_be_used_3();
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constexpr void should_not_be_used() {}
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constexpr void f() {
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if consteval {
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should_not_be_used(); // CHECK-NOT: call {{.*}}should_not_be_used
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} else {
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should_be_used_1(); // CHECK: call {{.*}}should_be_used_1
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}
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if !consteval {
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should_be_used_2(); // CHECK: call {{.*}}should_be_used_2
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}
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if !consteval {
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should_be_used_3(); // CHECK: call {{.*}}should_be_used_3
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} else {
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should_not_be_used(); // CHECK-NOT: call {{.*}}should_not_be_used
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}
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}
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void g() {
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f();
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}
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namespace GH55638 {
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constexpr bool is_constant_evaluated() noexcept {
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if consteval { return true; } else { return false; }
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}
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constexpr int compiletime(int) {
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return 2;
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}
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constexpr int runtime(int) {
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return 1;
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}
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constexpr int test(int x) {
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if(is_constant_evaluated())
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return compiletime(x); // CHECK-NOT: call {{.*}}compiletime
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return runtime(x); // CHECK: call {{.*}}runtime
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}
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int f(int x) {
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x = test(x);
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return x;
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}
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}
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