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|
LL| |#![feature(coverage_attribute)]
LL| |//@ edition: 2021
LL| |//@ compile-flags: -Zcoverage-options=branch
LL| |//@ llvm-cov-flags: --show-branches=count
LL| |
LL| |macro_rules! no_merge {
LL| | () => {
LL| | for _ in 0..1 {}
LL| | };
LL| |}
LL| |
LL| 3|fn branch_not(a: bool) {
LL| 3| no_merge!();
LL| |
LL| 3| if a {
------------------
| Branch (LL:8): [True: 2, False: 1]
------------------
LL| 2| say("a")
LL| 1| }
LL| 3| if !a {
------------------
| Branch (LL:8): [True: 1, False: 2]
------------------
LL| 1| say("not a");
LL| 2| }
LL| 3| if !!a {
------------------
| Branch (LL:8): [True: 2, False: 1]
------------------
LL| 2| say("not not a");
LL| 2| }
^1
LL| 3| if !!!a {
------------------
| Branch (LL:8): [True: 1, False: 2]
------------------
LL| 1| say("not not not a");
LL| 2| }
LL| 3|}
LL| |
LL| 3|fn branch_not_as(a: bool) {
LL| 3| no_merge!();
LL| |
LL| 3| if !(a as bool) {
------------------
| Branch (LL:8): [True: 1, False: 2]
------------------
LL| 1| say("not (a as bool)");
LL| 2| }
LL| 3| if !!(a as bool) {
------------------
| Branch (LL:8): [True: 2, False: 1]
------------------
LL| 2| say("not not (a as bool)");
LL| 2| }
^1
LL| 3| if !!!(a as bool) {
------------------
| Branch (LL:8): [True: 1, False: 2]
------------------
LL| 1| say("not not (a as bool)");
LL| 2| }
LL| 3|}
LL| |
LL| 15|fn branch_and(a: bool, b: bool) {
LL| 15| no_merge!();
LL| |
LL| 15| if a && b {
^12
------------------
| Branch (LL:8): [True: 12, False: 3]
| Branch (LL:13): [True: 8, False: 4]
------------------
LL| 8| say("both");
LL| 8| } else {
LL| 7| say("not both");
LL| 7| }
LL| 15|}
LL| |
LL| 15|fn branch_or(a: bool, b: bool) {
LL| 15| no_merge!();
LL| |
LL| 15| if a || b {
^3
------------------
| Branch (LL:8): [True: 12, False: 3]
| Branch (LL:13): [True: 2, False: 1]
------------------
LL| 14| say("either");
LL| 14| } else {
LL| 1| say("neither");
LL| 1| }
LL| 15|}
LL| |
LL| |#[coverage(off)]
LL| |fn say(message: &str) {
LL| | core::hint::black_box(message);
LL| |}
LL| |
LL| |#[coverage(off)]
LL| |fn main() {
LL| | for a in [false, true, true] {
LL| | branch_not(a);
LL| | branch_not_as(a);
LL| | }
LL| |
LL| | for a in [false, true, true, true, true] {
LL| | for b in [false, true, true] {
LL| | branch_and(a, b);
LL| | branch_or(a, b);
LL| | }
LL| | }
LL| |}
|
