coverage: Reactivate -Cinstrument-coverage=branch

rust-lang · Mar 5, 2024 · 5f36f54 · 5f36f54
1 parent 1036262
commit 5f36f54
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Showing 7 changed files with 196 additions and 82 deletions.
diff --git a/compiler/rustc_session/src/session.rs b/compiler/rustc_session/src/session.rs
@@ -356,10 +356,6 @@ impl Session {
     }
 
     pub fn instrument_coverage_branch(&self) -> bool {
-        // Temporarily deactivate `-Cinstrument-coverage=branch`.
-        if true {
-            return false;
-        }
         self.opts.cg.instrument_coverage() == InstrumentCoverage::Branch
     }
 

diff --git a/tests/coverage/branch_generics.cov-map b/tests/coverage/branch_generics.cov-map
@@ -1,43 +1,52 @@
 Function name: branch_generics::print_size::<()>
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 06, 01, 01, 24, 05, 01, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
+Raw bytes (35): 0x[01, 01, 02, 01, 05, 05, 02, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
 Number of expressions: 2
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
 - expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-Number of file 0 mappings: 4
+Number of file 0 mappings: 5
 - Code(Counter(0)) at (prev + 6, 1) to (start + 1, 36)
-- Code(Counter(1)) at (prev + 1, 37) to (start + 2, 6)
+- Branch { true: Counter(1), false: Expression(0, Sub) } at (prev + 1, 8) to (start + 0, 36)
+    true  = c1
+    false = (c0 - c1)
+- Code(Counter(1)) at (prev + 0, 37) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 2, 6)
     = (c0 - c1)
 - Code(Expression(1, Add)) at (prev + 3, 1) to (start + 0, 2)
     = (c1 + (c0 - c1))
 
 Function name: branch_generics::print_size::<u32>
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 06, 01, 01, 24, 05, 01, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
+Raw bytes (35): 0x[01, 01, 02, 01, 05, 05, 02, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
 Number of expressions: 2
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
 - expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-Number of file 0 mappings: 4
+Number of file 0 mappings: 5
 - Code(Counter(0)) at (prev + 6, 1) to (start + 1, 36)
-- Code(Counter(1)) at (prev + 1, 37) to (start + 2, 6)
+- Branch { true: Counter(1), false: Expression(0, Sub) } at (prev + 1, 8) to (start + 0, 36)
+    true  = c1
+    false = (c0 - c1)
+- Code(Counter(1)) at (prev + 0, 37) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 2, 6)
     = (c0 - c1)
 - Code(Expression(1, Add)) at (prev + 3, 1) to (start + 0, 2)
     = (c1 + (c0 - c1))
 
 Function name: branch_generics::print_size::<u64>
-Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 06, 01, 01, 24, 05, 01, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
+Raw bytes (35): 0x[01, 01, 02, 01, 05, 05, 02, 05, 01, 06, 01, 01, 24, 20, 05, 02, 01, 08, 00, 24, 05, 00, 25, 02, 06, 02, 02, 0c, 02, 06, 07, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
 Number of expressions: 2
 - expression 0 operands: lhs = Counter(0), rhs = Counter(1)
 - expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
-Number of file 0 mappings: 4
+Number of file 0 mappings: 5
 - Code(Counter(0)) at (prev + 6, 1) to (start + 1, 36)
-- Code(Counter(1)) at (prev + 1, 37) to (start + 2, 6)
+- Branch { true: Counter(1), false: Expression(0, Sub) } at (prev + 1, 8) to (start + 0, 36)
+    true  = c1
+    false = (c0 - c1)
+- Code(Counter(1)) at (prev + 0, 37) to (start + 2, 6)
 - Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 2, 6)
     = (c0 - c1)
 - Code(Expression(1, Add)) at (prev + 3, 1) to (start + 0, 2)

diff --git a/tests/coverage/branch_generics.coverage b/tests/coverage/branch_generics.coverage
@@ -5,6 +5,11 @@
    LL|       |
    LL|      3|fn print_size<T>() {
    LL|      3|    if std::mem::size_of::<T>() > 4 {
+  ------------------
+  |  Branch (LL:8): [True: 0, False: 1]
+  |  Branch (LL:8): [True: 0, False: 1]
+  |  Branch (LL:8): [True: 1, False: 0]
+  ------------------
    LL|      1|        println!("size > 4");
    LL|      2|    } else {
    LL|      2|        println!("size <= 4");
@@ -14,6 +19,9 @@
   | branch_generics::print_size::<()>:
   |   LL|      1|fn print_size<T>() {
   |   LL|      1|    if std::mem::size_of::<T>() > 4 {
+  |  ------------------
+  |  |  Branch (LL:8): [True: 0, False: 1]
+  |  ------------------
   |   LL|      0|        println!("size > 4");
   |   LL|      1|    } else {
   |   LL|      1|        println!("size <= 4");
@@ -23,6 +31,9 @@
   | branch_generics::print_size::<u32>:
   |   LL|      1|fn print_size<T>() {
   |   LL|      1|    if std::mem::size_of::<T>() > 4 {
+  |  ------------------
+  |  |  Branch (LL:8): [True: 0, False: 1]
+  |  ------------------
   |   LL|      0|        println!("size > 4");
   |   LL|      1|    } else {
   |   LL|      1|        println!("size <= 4");
@@ -32,6 +43,9 @@
   | branch_generics::print_size::<u64>:
   |   LL|      1|fn print_size<T>() {
   |   LL|      1|    if std::mem::size_of::<T>() > 4 {
+  |  ------------------
+  |  |  Branch (LL:8): [True: 1, False: 0]
+  |  ------------------
   |   LL|      1|        println!("size > 4");
   |   LL|      1|    } else {
   |   LL|      0|        println!("size <= 4");

diff --git a/tests/coverage/branch_if.cov-map b/tests/coverage/branch_if.cov-map
@@ -1,93 +1,130 @@
 Function name: branch_if::branch_and
-Raw bytes (40): 0x[01, 01, 03, 06, 0d, 05, 09, 11, 03, 06, 01, 1d, 01, 01, 10, 05, 03, 08, 00, 09, 09, 00, 0d, 00, 0e, 11, 00, 0f, 02, 06, 03, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
+Raw bytes (56): 0x[01, 01, 04, 05, 09, 0d, 02, 11, 0f, 0d, 02, 08, 01, 1d, 01, 01, 10, 05, 03, 08, 00, 09, 20, 09, 02, 00, 08, 00, 09, 09, 00, 0d, 00, 0e, 20, 11, 0d, 00, 0d, 00, 0e, 11, 00, 0f, 02, 06, 0f, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 3
-- expression 0 operands: lhs = Expression(1, Sub), rhs = Counter(3)
-- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
-- expression 2 operands: lhs = Counter(4), rhs = Expression(0, Add)
-Number of file 0 mappings: 6
+Number of expressions: 4
+- expression 0 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 1 operands: lhs = Counter(3), rhs = Expression(0, Sub)
+- expression 2 operands: lhs = Counter(4), rhs = Expression(3, Add)
+- expression 3 operands: lhs = Counter(3), rhs = Expression(0, Sub)
+Number of file 0 mappings: 8
 - Code(Counter(0)) at (prev + 29, 1) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 3, 8) to (start + 0, 9)
+- Branch { true: Counter(2), false: Expression(0, Sub) } at (prev + 0, 8) to (start + 0, 9)
+    true  = c2
+    false = (c1 - c2)
 - Code(Counter(2)) at (prev + 0, 13) to (start + 0, 14)
+- Branch { true: Counter(4), false: Counter(3) } at (prev + 0, 13) to (start + 0, 14)
+    true  = c4
+    false = c3
 - Code(Counter(4)) at (prev + 0, 15) to (start + 2, 6)
-- Code(Expression(0, Add)) at (prev + 2, 12) to (start + 2, 6)
-    = ((c1 - c2) + c3)
+- Code(Expression(3, Add)) at (prev + 2, 12) to (start + 2, 6)
+    = (c3 + (c1 - c2))
 - Code(Expression(2, Add)) at (prev + 3, 1) to (start + 0, 2)
-    = (c4 + ((c1 - c2) + c3))
+    = (c4 + (c3 + (c1 - c2)))
 
 Function name: branch_if::branch_not
-Raw bytes (132): 0x[01, 01, 1d, 05, 09, 09, 02, 73, 0d, 09, 02, 0d, 6e, 73, 0d, 09, 02, 6b, 11, 0d, 6e, 73, 0d, 09, 02, 11, 66, 6b, 11, 0d, 6e, 73, 0d, 09, 02, 63, 15, 11, 66, 6b, 11, 0d, 6e, 73, 0d, 09, 02, 15, 5e, 63, 15, 11, 66, 6b, 11, 0d, 6e, 73, 0d, 09, 02, 0e, 01, 0c, 01, 01, 10, 05, 03, 08, 00, 09, 09, 01, 09, 00, 11, 02, 01, 06, 00, 07, 73, 01, 08, 00, 0a, 6e, 00, 0b, 02, 06, 0d, 02, 06, 00, 07, 6b, 01, 08, 00, 0b, 11, 00, 0c, 02, 06, 66, 02, 06, 00, 07, 63, 01, 08, 00, 0c, 5e, 00, 0d, 02, 06, 15, 02, 06, 00, 07, 5b, 01, 01, 00, 02]
+Raw bytes (224): 0x[01, 01, 29, 05, 09, 09, 02, a3, 01, 0d, 09, 02, a3, 01, 0d, 09, 02, 0d, 9e, 01, a3, 01, 0d, 09, 02, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 11, 96, 01, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 93, 01, 15, 11, 96, 01, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 93, 01, 15, 11, 96, 01, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 15, 8e, 01, 93, 01, 15, 11, 96, 01, 9b, 01, 11, 0d, 9e, 01, a3, 01, 0d, 09, 02, 12, 01, 0c, 01, 01, 10, 05, 03, 08, 00, 09, 20, 09, 02, 00, 08, 00, 09, 09, 01, 09, 00, 11, 02, 01, 06, 00, 07, a3, 01, 01, 08, 00, 0a, 20, 9e, 01, 0d, 00, 08, 00, 0a, 9e, 01, 00, 0b, 02, 06, 0d, 02, 06, 00, 07, 9b, 01, 01, 08, 00, 0b, 20, 11, 96, 01, 00, 08, 00, 0b, 11, 00, 0c, 02, 06, 96, 01, 02, 06, 00, 07, 93, 01, 01, 08, 00, 0c, 20, 8e, 01, 15, 00, 08, 00, 0c, 8e, 01, 00, 0d, 02, 06, 15, 02, 06, 00, 07, 8b, 01, 01, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
-Number of expressions: 29
+Number of expressions: 41
 - expression 0 operands: lhs = Counter(1), rhs = Counter(2)
 - expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 2 operands: lhs = Expression(28, Add), rhs = Counter(3)
+- expression 2 operands: lhs = Expression(40, Add), rhs = Counter(3)
 - expression 3 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 4 operands: lhs = Counter(3), rhs = Expression(27, Sub)
-- expression 5 operands: lhs = Expression(28, Add), rhs = Counter(3)
-- expression 6 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 7 operands: lhs = Expression(26, Add), rhs = Counter(4)
-- expression 8 operands: lhs = Counter(3), rhs = Expression(27, Sub)
-- expression 9 operands: lhs = Expression(28, Add), rhs = Counter(3)
-- expression 10 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 11 operands: lhs = Counter(4), rhs = Expression(25, Sub)
-- expression 12 operands: lhs = Expression(26, Add), rhs = Counter(4)
-- expression 13 operands: lhs = Counter(3), rhs = Expression(27, Sub)
-- expression 14 operands: lhs = Expression(28, Add), rhs = Counter(3)
-- expression 15 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 16 operands: lhs = Expression(24, Add), rhs = Counter(5)
-- expression 17 operands: lhs = Counter(4), rhs = Expression(25, Sub)
-- expression 18 operands: lhs = Expression(26, Add), rhs = Counter(4)
-- expression 19 operands: lhs = Counter(3), rhs = Expression(27, Sub)
-- expression 20 operands: lhs = Expression(28, Add), rhs = Counter(3)
+- expression 4 operands: lhs = Expression(40, Add), rhs = Counter(3)
+- expression 5 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+- expression 6 operands: lhs = Counter(3), rhs = Expression(39, Sub)
+- expression 7 operands: lhs = Expression(40, Add), rhs = Counter(3)
+- expression 8 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+- expression 9 operands: lhs = Expression(38, Add), rhs = Counter(4)
+- expression 10 operands: lhs = Counter(3), rhs = Expression(39, Sub)
+- expression 11 operands: lhs = Expression(40, Add), rhs = Counter(3)
+- expression 12 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+- expression 13 operands: lhs = Expression(38, Add), rhs = Counter(4)
+- expression 14 operands: lhs = Counter(3), rhs = Expression(39, Sub)
+- expression 15 operands: lhs = Expression(40, Add), rhs = Counter(3)
+- expression 16 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+- expression 17 operands: lhs = Counter(4), rhs = Expression(37, Sub)
+- expression 18 operands: lhs = Expression(38, Add), rhs = Counter(4)
+- expression 19 operands: lhs = Counter(3), rhs = Expression(39, Sub)
+- expression 20 operands: lhs = Expression(40, Add), rhs = Counter(3)
 - expression 21 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-- expression 22 operands: lhs = Counter(5), rhs = Expression(23, Sub)
-- expression 23 operands: lhs = Expression(24, Add), rhs = Counter(5)
-- expression 24 operands: lhs = Counter(4), rhs = Expression(25, Sub)
-- expression 25 operands: lhs = Expression(26, Add), rhs = Counter(4)
-- expression 26 operands: lhs = Counter(3), rhs = Expression(27, Sub)
-- expression 27 operands: lhs = Expression(28, Add), rhs = Counter(3)
-- expression 28 operands: lhs = Counter(2), rhs = Expression(0, Sub)
-Number of file 0 mappings: 14
+- expression 22 operands: lhs = Expression(36, Add), rhs = Counter(5)
+- expression 23 operands: lhs = Counter(4), rhs = Expression(37, Sub)
+- expression 24 operands: lhs = Expression(38, Add), rhs = Counter(4)
+- expression 25 operands: lhs = Counter(3), rhs = Expression(39, Sub)
+- expression 26 operands: lhs = Expression(40, Add), rhs = Counter(3)
+- expression 27 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+- expression 28 operands: lhs = Expression(36, Add), rhs = Counter(5)
+- expression 29 operands: lhs = Counter(4), rhs = Expression(37, Sub)
+- expression 30 operands: lhs = Expression(38, Add), rhs = Counter(4)
+- expression 31 operands: lhs = Counter(3), rhs = Expression(39, Sub)
+- expression 32 operands: lhs = Expression(40, Add), rhs = Counter(3)
+- expression 33 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+- expression 34 operands: lhs = Counter(5), rhs = Expression(35, Sub)
+- expression 35 operands: lhs = Expression(36, Add), rhs = Counter(5)
+- expression 36 operands: lhs = Counter(4), rhs = Expression(37, Sub)
+- expression 37 operands: lhs = Expression(38, Add), rhs = Counter(4)
+- expression 38 operands: lhs = Counter(3), rhs = Expression(39, Sub)
+- expression 39 operands: lhs = Expression(40, Add), rhs = Counter(3)
+- expression 40 operands: lhs = Counter(2), rhs = Expression(0, Sub)
+Number of file 0 mappings: 18
 - Code(Counter(0)) at (prev + 12, 1) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 3, 8) to (start + 0, 9)
+- Branch { true: Counter(2), false: Expression(0, Sub) } at (prev + 0, 8) to (start + 0, 9)
+    true  = c2
+    false = (c1 - c2)
 - Code(Counter(2)) at (prev + 1, 9) to (start + 0, 17)
 - Code(Expression(0, Sub)) at (prev + 1, 6) to (start + 0, 7)
     = (c1 - c2)
-- Code(Expression(28, Add)) at (prev + 1, 8) to (start + 0, 10)
+- Code(Expression(40, Add)) at (prev + 1, 8) to (start + 0, 10)
     = (c2 + (c1 - c2))
-- Code(Expression(27, Sub)) at (prev + 0, 11) to (start + 2, 6)
+- Branch { true: Expression(39, Sub), false: Counter(3) } at (prev + 0, 8) to (start + 0, 10)
+    true  = ((c2 + (c1 - c2)) - c3)
+    false = c3
+- Code(Expression(39, Sub)) at (prev + 0, 11) to (start + 2, 6)
     = ((c2 + (c1 - c2)) - c3)
 - Code(Counter(3)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(26, Add)) at (prev + 1, 8) to (start + 0, 11)
+- Code(Expression(38, Add)) at (prev + 1, 8) to (start + 0, 11)
     = (c3 + ((c2 + (c1 - c2)) - c3))
+- Branch { true: Counter(4), false: Expression(37, Sub) } at (prev + 0, 8) to (start + 0, 11)
+    true  = c4
+    false = ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)
 - Code(Counter(4)) at (prev + 0, 12) to (start + 2, 6)
-- Code(Expression(25, Sub)) at (prev + 2, 6) to (start + 0, 7)
+- Code(Expression(37, Sub)) at (prev + 2, 6) to (start + 0, 7)
     = ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)
-- Code(Expression(24, Add)) at (prev + 1, 8) to (start + 0, 12)
+- Code(Expression(36, Add)) at (prev + 1, 8) to (start + 0, 12)
     = (c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4))
-- Code(Expression(23, Sub)) at (prev + 0, 13) to (start + 2, 6)
+- Branch { true: Expression(35, Sub), false: Counter(5) } at (prev + 0, 8) to (start + 0, 12)
+    true  = ((c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)) - c5)
+    false = c5
+- Code(Expression(35, Sub)) at (prev + 0, 13) to (start + 2, 6)
     = ((c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)) - c5)
 - Code(Counter(5)) at (prev + 2, 6) to (start + 0, 7)
-- Code(Expression(22, Add)) at (prev + 1, 1) to (start + 0, 2)
+- Code(Expression(34, Add)) at (prev + 1, 1) to (start + 0, 2)
     = (c5 + ((c4 + ((c3 + ((c2 + (c1 - c2)) - c3)) - c4)) - c5))
 
 Function name: branch_if::branch_or
-Raw bytes (42): 0x[01, 01, 04, 05, 09, 09, 0d, 0f, 11, 09, 0d, 06, 01, 27, 01, 01, 10, 05, 03, 08, 00, 09, 02, 00, 0d, 00, 0e, 0f, 00, 0f, 02, 06, 11, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
+Raw bytes (56): 0x[01, 01, 04, 05, 09, 09, 0d, 0f, 11, 09, 0d, 08, 01, 27, 01, 01, 10, 05, 03, 08, 00, 09, 20, 09, 02, 00, 08, 00, 09, 02, 00, 0d, 00, 0e, 20, 0d, 11, 00, 0d, 00, 0e, 0f, 00, 0f, 02, 06, 11, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
 Number of files: 1
 - file 0 => global file 1
 Number of expressions: 4
 - expression 0 operands: lhs = Counter(1), rhs = Counter(2)
 - expression 1 operands: lhs = Counter(2), rhs = Counter(3)
 - expression 2 operands: lhs = Expression(3, Add), rhs = Counter(4)
 - expression 3 operands: lhs = Counter(2), rhs = Counter(3)
-Number of file 0 mappings: 6
+Number of file 0 mappings: 8
 - Code(Counter(0)) at (prev + 39, 1) to (start + 1, 16)
 - Code(Counter(1)) at (prev + 3, 8) to (start + 0, 9)
+- Branch { true: Counter(2), false: Expression(0, Sub) } at (prev + 0, 8) to (start + 0, 9)
+    true  = c2
+    false = (c1 - c2)
 - Code(Expression(0, Sub)) at (prev + 0, 13) to (start + 0, 14)
     = (c1 - c2)
+- Branch { true: Counter(3), false: Counter(4) } at (prev + 0, 13) to (start + 0, 14)
+    true  = c3
+    false = c4
 - Code(Expression(3, Add)) at (prev + 0, 15) to (start + 2, 6)
     = (c2 + c3)
 - Code(Counter(4)) at (prev + 2, 12) to (start + 2, 6)

diff --git a/tests/coverage/branch_if.coverage b/tests/coverage/branch_if.coverage
@@ -13,16 +13,28 @@
    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|}
@@ -32,6 +44,10 @@
    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");
@@ -43,6 +59,10 @@
    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");