463e30f51f
Clang crashes when encountering an `if consteval` statement. This is the minimum fix not to crash. The fix is consistent with the current behavior of if constexpr, which does generate coverage data for the discarded branches. This is of course not correct and a better solution is needed for both if constexpr and if consteval. See https://github.com/llvm/llvm-project/issues/54419. Fixes #57377 Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D132723
82 lines
4.3 KiB
C++
82 lines
4.3 KiB
C++
// RUN: %clang_cc1 -mllvm -emptyline-comment-coverage=false -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -std=c++2b -triple %itanium_abi_triple -main-file-name if.cpp %s | FileCheck %s
|
|
|
|
int nop() { return 0; }
|
|
|
|
// CHECK-LABEL: _Z3foov:
|
|
// CHECK-NEXT: [[@LINE+3]]:12 -> [[@LINE+8]]:2 = #0
|
|
// CHECK-NEXT: [[@LINE+3]]:15 -> [[@LINE+3]]:19 = #0
|
|
// CHECK-NEXT: Branch,File 0, [[@LINE+2]]:15 -> [[@LINE+2]]:19 = 0, 0
|
|
void foo() { // CHECK-NEXT: Gap,File 0, [[@LINE+1]]:21 -> [[@LINE+1]]:22 = #2
|
|
if (int j = true ? nop() // CHECK-NEXT: [[@LINE]]:22 -> [[@LINE]]:27 = #2
|
|
: nop(); // CHECK-NEXT: [[@LINE]]:22 -> [[@LINE]]:27 = (#0 - #2)
|
|
j) // CHECK-NEXT: [[@LINE]]:7 -> [[@LINE]]:8 = #0
|
|
++j; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:7 -> [[@LINE-1]]:8 = #1, (#0 - #1)
|
|
} // CHECK-NEXT: [[@LINE-2]]:9 -> [[@LINE-1]]:5 = #1
|
|
// CHECK-NEXT: [[@LINE-2]]:5 -> [[@LINE-2]]:8 = #1
|
|
|
|
// FIXME: Do not generate coverage for discarded branches in if consteval and if constexpr statements
|
|
constexpr int check_consteval(int i) {
|
|
if consteval {
|
|
i++;
|
|
}
|
|
if !consteval {
|
|
i++;
|
|
}
|
|
if consteval {
|
|
return 42;
|
|
} else {
|
|
return i;
|
|
}
|
|
}
|
|
|
|
// CHECK-LABEL: main:
|
|
int main() { // CHECK: File 0, [[@LINE]]:12 -> {{[0-9]+}}:2 = #0
|
|
int i = 0;
|
|
// CHECK-NEXT: File 0, [[@LINE+3]]:6 -> [[@LINE+3]]:12 = #0
|
|
// CHECK-NEXT: Branch,File 0, [[@LINE+2]]:6 -> [[@LINE+2]]:12 = #1, (#0 - #1)
|
|
// CHECK-NEXT: Gap,File 0, [[@LINE+1]]:13 -> [[@LINE+1]]:14 = #1
|
|
if(i == 0) i = 1; // CHECK-NEXT: File 0, [[@LINE]]:14 -> [[@LINE]]:19 = #1
|
|
|
|
// CHECK-NEXT: File 0, [[@LINE+2]]:6 -> [[@LINE+2]]:12 = #0
|
|
// CHECK-NEXT: Branch,File 0, [[@LINE+1]]:6 -> [[@LINE+1]]:12 = #2, (#0 - #2)
|
|
if(i == 1) // CHECK-NEXT: Gap,File 0, [[@LINE]]:13 -> [[@LINE+1]]:5 = #2
|
|
i = 2; // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:10 = #2
|
|
|
|
// CHECK-NEXT: File 0, [[@LINE+2]]:6 -> [[@LINE+2]]:12 = #0
|
|
// CHECK-NEXT: Branch,File 0, [[@LINE+1]]:6 -> [[@LINE+1]]:12 = #3, (#0 - #3)
|
|
if(i == 0) { i = 1; // CHECK-NEXT: Gap,File 0, [[@LINE]]:13 -> [[@LINE]]:14 = #3
|
|
i = 2; // CHECK-NEXT: File 0, [[@LINE-1]]:14 -> [[@LINE+1]]:4 = #3
|
|
}
|
|
// CHECK-NEXT: File 0, [[@LINE+2]]:6 -> [[@LINE+2]]:12 = #0
|
|
// CHECK-NEXT: Branch,File 0, [[@LINE+1]]:6 -> [[@LINE+1]]:12 = #4, (#0 - #4)
|
|
if(i != 0) { // CHECK-NEXT: Gap,File 0, [[@LINE]]:13 -> [[@LINE]]:14 = #4
|
|
i = 1; // CHECK-NEXT: File 0, [[@LINE-1]]:14 -> [[@LINE+1]]:4 = #4
|
|
} else { // CHECK-NEXT: Gap,File 0, [[@LINE]]:4 -> [[@LINE]]:10 = (#0 - #4)
|
|
i = 3; // CHECK-NEXT: File 0, [[@LINE-1]]:10 -> [[@LINE+1]]:4 = (#0 - #4)
|
|
}
|
|
|
|
// CHECK-NEXT: File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:13 = #0
|
|
// CHECK-NEXT: Branch,File 0, [[@LINE+1]]:7 -> [[@LINE+1]]:13 = #5, (#0 - #5)
|
|
i = i == 0? // CHECK-NEXT: Gap,File 0, [[@LINE]]:14 -> [[@LINE+1]]:9 = #5
|
|
i + 1 : // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:14 = #5
|
|
i + 2; // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:14 = (#0 - #5)
|
|
|
|
// CHECK-NEXT: File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:13 = #0
|
|
// CHECK-NEXT: Branch,File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:13 = #6, (#0 - #6)
|
|
// CHECK-NEXT: File 0, [[@LINE+1]]:14 -> [[@LINE+1]]:20 = #6
|
|
i = i == 0?i + 12:i + 10; // CHECK-NEXT: File 0, [[@LINE]]:21 -> [[@LINE]]:27 = (#0 - #6)
|
|
|
|
// GH-57377
|
|
constexpr int c_i = check_consteval(0);
|
|
check_consteval(i);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define FOO true
|
|
|
|
// CHECK-LABEL: _Z7ternaryv:
|
|
void ternary() {
|
|
true ? FOO : FOO; // CHECK-NOT: Gap,{{.*}}, [[@LINE]]:8 ->
|
|
}
|