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#![feature(coverage_attribute)]
//@ edition: 2021
//@ compile-flags: -Zcoverage-options=branch
//@ llvm-cov-flags: --show-branches=count
macro_rules! no_merge {
() => {
for _ in 0..1 {}
};
}
fn branch_not(a: bool) {
no_merge!();
if a {
say("a")
}
if !a {
say("not a");
}
if !!a {
say("not not a");
}
if !!!a {
say("not not not a");
}
}
fn branch_not_as(a: bool) {
no_merge!();
if !(a as bool) {
say("not (a as bool)");
}
if !!(a as bool) {
say("not not (a as bool)");
}
if !!!(a as bool) {
say("not not (a as bool)");
}
}
fn branch_and(a: bool, b: bool) {
no_merge!();
if a && b {
say("both");
} else {
say("not both");
}
}
fn branch_or(a: bool, b: bool) {
no_merge!();
if a || b {
say("either");
} else {
say("neither");
}
}
#[coverage(off)]
fn say(message: &str) {
core::hint::black_box(message);
}
#[coverage(off)]
fn main() {
for a in [false, true, true] {
branch_not(a);
branch_not_as(a);
}
for a in [false, true, true, true, true] {
for b in [false, true, true] {
branch_and(a, b);
branch_or(a, b);
}
}
}
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