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Merged
merged 3 commits into from
Apr 25, 2022
Merged

Implement MIR opt unit tests #96090

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f280a83
Add support for MIR opt unit tests
JakobDegen Apr 11, 2022
699bf7d
Switch some tests over to new MIR opt unit tests
JakobDegen Apr 13, 2022
4534188
Address nits
JakobDegen Apr 16, 2022
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1 change: 1 addition & 0 deletions compiler/rustc_interface/src/tests.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -751,6 +751,7 @@ fn test_debugging_options_tracking_hash() {
tracked!(location_detail, LocationDetail { file: true, line: false, column: false });
tracked!(merge_functions, Some(MergeFunctions::Disabled));
tracked!(mir_emit_retag, true);
tracked!(mir_enable_passes, vec![("DestProp".to_string(), false)]);
tracked!(mir_opt_level, Some(4));
tracked!(move_size_limit, Some(4096));
tracked!(mutable_noalias, Some(true));
Expand Down
21 changes: 17 additions & 4 deletions compiler/rustc_mir_transform/src/pass_manager.rs
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Expand Up @@ -77,17 +77,30 @@ pub fn run_passes<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>, passes: &[&dyn
let mut cnt = 0;

let validate = tcx.sess.opts.debugging_opts.validate_mir;
let overridden_passes = &tcx.sess.opts.debugging_opts.mir_enable_passes;
trace!(?overridden_passes);

if validate {
validate_body(tcx, body, format!("start of phase transition from {:?}", start_phase));
}

for pass in passes {
if !pass.is_enabled(&tcx.sess) {
continue;
}

let name = pass.name();

if let Some((_, polarity)) = overridden_passes.iter().rev().find(|(s, _)| s == &*name) {
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I wonder if we should use a StableMap for overridden_passes. This looks awfully like a n^2 situation, although it'll probably never end up with enough values to make it matter much? One other reason to use a StableMap would be to reduce rebuilds from this option being changed in a ways that don't actually matter (e.g. -Zmir-enable-passes=+InstCombine,-InstCombine has no functional difference compoared to -Zmir-enable-passes=-InstCombine)

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I had considered this but actually intentionally avoided it - my reasoning was that the most important scenario for perf is the one where overridden_passes is empty (since that's what essentially every user will be using), and Vec is a data structure that I can be very certain is very fast in that case.

trace!(
pass = %name,
"{} as requested by flag",
if *polarity { "Running" } else { "Not running" },
);
if !polarity {
continue;
}
} else {
if !pass.is_enabled(&tcx.sess) {
continue;
}
}
let dump_enabled = pass.is_mir_dump_enabled();

if dump_enabled {
Expand Down
19 changes: 19 additions & 0 deletions compiler/rustc_session/src/options.rs
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Expand Up @@ -369,6 +369,8 @@ mod desc {
pub const parse_opt_langid: &str = "a language identifier";
pub const parse_opt_pathbuf: &str = "a path";
pub const parse_list: &str = "a space-separated list of strings";
pub const parse_list_with_polarity: &str =
"a comma-separated list of strings, with elements beginning with + or -";
pub const parse_opt_comma_list: &str = "a comma-separated list of strings";
pub const parse_number: &str = "a number";
pub const parse_opt_number: &str = parse_number;
Expand Down Expand Up @@ -530,6 +532,19 @@ mod parse {
}
}

crate fn parse_list_with_polarity(slot: &mut Vec<(String, bool)>, v: Option<&str>) -> bool {
match v {
Some(s) => {
for s in s.split(",") {
let Some(pass_name) = s.strip_prefix(&['+', '-'][..]) else { return false };
slot.push((pass_name.to_string(), &s[..1] == "+"));
}
true
}
None => false,
}
}

crate fn parse_location_detail(ld: &mut LocationDetail, v: Option<&str>) -> bool {
if let Some(v) = v {
ld.line = false;
Expand Down Expand Up @@ -1319,6 +1334,10 @@ options! {
mir_emit_retag: bool = (false, parse_bool, [TRACKED],
"emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0 \
(default: no)"),
mir_enable_passes: Vec<(String, bool)> = (Vec::new(), parse_list_with_polarity, [TRACKED],
"use like `-Zmir-enable-passes=+DestProp,-InstCombine`. Forces the specified passes to be \
enabled, overriding all other checks. Passes that are not specified are enabled or \
disabled by other flags as usual."),
mir_opt_level: Option<usize> = (None, parse_opt_number, [TRACKED],
"MIR optimization level (0-4; default: 1 in non optimized builds and 2 in optimized builds)"),
move_size_limit: Option<usize> = (None, parse_opt_number, [TRACKED],
Expand Down
2 changes: 1 addition & 1 deletion src/test/mir-opt/combine_clone_of_primitives.rs
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@@ -1,4 +1,4 @@
// compile-flags: -C opt-level=0 -Z inline_mir=no
// unit-test: InstCombine
// ignore-wasm32 compiled with panic=abort by default

// EMIT_MIR combine_clone_of_primitives.{impl#0}-clone.InstCombine.diff
Expand Down
24 changes: 24 additions & 0 deletions src/test/mir-opt/combine_clone_of_primitives.{impl#0}-clone.InstCombine.diff
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Expand Up @@ -23,9 +23,15 @@
}

bb0: {
StorageLive(_2); // scope 0 at $DIR/combine_clone_of_primitives.rs:8:5: 8:9
_2 = &((*_1).0: T); // scope 0 at $DIR/combine_clone_of_primitives.rs:8:5: 8:9
StorageLive(_3); // scope 0 at $DIR/combine_clone_of_primitives.rs:9:5: 9:11
_3 = &((*_1).1: u64); // scope 0 at $DIR/combine_clone_of_primitives.rs:9:5: 9:11
StorageLive(_4); // scope 0 at $DIR/combine_clone_of_primitives.rs:10:5: 10:16
_4 = &((*_1).2: [f32; 3]); // scope 0 at $DIR/combine_clone_of_primitives.rs:10:5: 10:16
StorageLive(_5); // scope 1 at $DIR/combine_clone_of_primitives.rs:8:5: 8:9
StorageLive(_6); // scope 1 at $DIR/combine_clone_of_primitives.rs:8:5: 8:9
StorageLive(_7); // scope 1 at $DIR/combine_clone_of_primitives.rs:8:5: 8:9
- _7 = &(*_2); // scope 1 at $DIR/combine_clone_of_primitives.rs:8:5: 8:9
- _6 = &(*_7); // scope 1 at $DIR/combine_clone_of_primitives.rs:8:5: 8:9
+ _7 = _2; // scope 1 at $DIR/combine_clone_of_primitives.rs:8:5: 8:9
Expand All @@ -37,6 +43,10 @@
}

bb1: {
StorageDead(_6); // scope 1 at $DIR/combine_clone_of_primitives.rs:8:8: 8:9
StorageLive(_8); // scope 1 at $DIR/combine_clone_of_primitives.rs:9:5: 9:11
StorageLive(_9); // scope 1 at $DIR/combine_clone_of_primitives.rs:9:5: 9:11
StorageLive(_10); // scope 1 at $DIR/combine_clone_of_primitives.rs:9:5: 9:11
- _10 = &(*_3); // scope 1 at $DIR/combine_clone_of_primitives.rs:9:5: 9:11
- _9 = &(*_10); // scope 1 at $DIR/combine_clone_of_primitives.rs:9:5: 9:11
- _8 = <u64 as Clone>::clone(move _9) -> [return: bb2, unwind: bb4]; // scope 1 at $DIR/combine_clone_of_primitives.rs:9:5: 9:11
Expand All @@ -50,6 +60,10 @@
}

bb2: {
StorageDead(_9); // scope 1 at $DIR/combine_clone_of_primitives.rs:9:10: 9:11
StorageLive(_11); // scope 1 at $DIR/combine_clone_of_primitives.rs:10:5: 10:16
StorageLive(_12); // scope 1 at $DIR/combine_clone_of_primitives.rs:10:5: 10:16
StorageLive(_13); // scope 1 at $DIR/combine_clone_of_primitives.rs:10:5: 10:16
- _13 = &(*_4); // scope 1 at $DIR/combine_clone_of_primitives.rs:10:5: 10:16
- _12 = &(*_13); // scope 1 at $DIR/combine_clone_of_primitives.rs:10:5: 10:16
- _11 = <[f32; 3] as Clone>::clone(move _12) -> [return: bb3, unwind: bb4]; // scope 1 at $DIR/combine_clone_of_primitives.rs:10:5: 10:16
Expand All @@ -63,10 +77,20 @@
}

bb3: {
StorageDead(_12); // scope 1 at $DIR/combine_clone_of_primitives.rs:10:15: 10:16
Deinit(_0); // scope 1 at $DIR/combine_clone_of_primitives.rs:6:10: 6:15
(_0.0: T) = move _5; // scope 1 at $DIR/combine_clone_of_primitives.rs:6:10: 6:15
(_0.1: u64) = move _8; // scope 1 at $DIR/combine_clone_of_primitives.rs:6:10: 6:15
(_0.2: [f32; 3]) = move _11; // scope 1 at $DIR/combine_clone_of_primitives.rs:6:10: 6:15
StorageDead(_13); // scope 1 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
StorageDead(_11); // scope 1 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
StorageDead(_10); // scope 1 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
StorageDead(_8); // scope 1 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
StorageDead(_7); // scope 1 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
StorageDead(_5); // scope 1 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
StorageDead(_4); // scope 0 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
StorageDead(_3); // scope 0 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
StorageDead(_2); // scope 0 at $DIR/combine_clone_of_primitives.rs:6:14: 6:15
return; // scope 0 at $DIR/combine_clone_of_primitives.rs:6:15: 6:15
}

Expand Down
6 changes: 4 additions & 2 deletions src/test/mir-opt/early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
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Expand Up @@ -68,8 +68,10 @@
+ bb3: {
StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch.rs:8:1: 8:2
return; // scope 0 at $DIR/early_otherwise_branch.rs:8:2: 8:2
+ }
+
}

- bb5 (cleanup): {
- resume; // scope 0 at $DIR/early_otherwise_branch.rs:3:1: 8:2
+ bb4: {
+ StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch.rs:4:5: 4:17
+ switchInt(_7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:4:5: 4:17
Expand Down
6 changes: 3 additions & 3 deletions src/test/mir-opt/early_otherwise_branch.opt2.EarlyOtherwiseBranch.diff
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Expand Up @@ -32,7 +32,7 @@
StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch.rs:12:16: 12:17
StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch.rs:12:16: 12:17
_8 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:12:11: 12:17
- switchInt(move _8) -> [0_isize: bb1, 1_isize: bb3, otherwise: bb7]; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 12:17
- switchInt(move _8) -> [0_isize: bb1, 1_isize: bb3, otherwise: bb2]; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 12:17
+ StorageLive(_11); // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 12:17
+ _11 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 12:17
+ StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 12:17
Expand Down Expand Up @@ -84,8 +84,8 @@
return; // scope 0 at $DIR/early_otherwise_branch.rs:17:2: 17:2
}

- bb7: {
- unreachable; // scope 0 at $DIR/early_otherwise_branch.rs:15:14: 15:15
- bb7 (cleanup): {
- resume; // scope 0 at $DIR/early_otherwise_branch.rs:11:1: 17:2
+ bb5: {
+ StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 12:17
+ switchInt(_8) -> [0_isize: bb3, 1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:12:5: 12:17
Expand Down
6 changes: 4 additions & 2 deletions src/test/mir-opt/early_otherwise_branch.opt3.EarlyOtherwiseBranch.diff
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Expand Up @@ -68,8 +68,10 @@
+ bb3: {
StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch.rs:26:1: 26:2
return; // scope 0 at $DIR/early_otherwise_branch.rs:26:2: 26:2
+ }
+
}

- bb5 (cleanup): {
- resume; // scope 0 at $DIR/early_otherwise_branch.rs:21:1: 26:2
+ bb4: {
+ StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch.rs:22:5: 22:17
+ switchInt(_7) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch.rs:22:5: 22:17
Expand Down
2 changes: 1 addition & 1 deletion src/test/mir-opt/early_otherwise_branch.rs
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@@ -1,4 +1,4 @@
// compile-flags: -Z mir-opt-level=4 -Z unsound-mir-opts
// unit-test: EarlyOtherwiseBranch
// EMIT_MIR early_otherwise_branch.opt1.EarlyOtherwiseBranch.diff
fn opt1(x: Option<u32>, y: Option<u32>) -> u32 {
match (x, y) {
Expand Down
6 changes: 4 additions & 2 deletions src/test/mir-opt/early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
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Expand Up @@ -90,8 +90,10 @@
+ bb4: {
StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:9:1: 9:2
return; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:9:2: 9:2
+ }
+
}

- bb6 (cleanup): {
- resume; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:4:1: 9:2
+ bb5: {
+ StorageDead(_15); // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:5: 5:20
+ switchInt(_10) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/early_otherwise_branch_3_element_tuple.rs:5:5: 5:20
Expand Down
2 changes: 1 addition & 1 deletion src/test/mir-opt/early_otherwise_branch_3_element_tuple.rs
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@@ -1,4 +1,4 @@
// compile-flags: -Z mir-opt-level=4 -Z unsound-mir-opts
// unit-test: EarlyOtherwiseBranch

// EMIT_MIR early_otherwise_branch_3_element_tuple.opt1.EarlyOtherwiseBranch.diff
fn opt1(x: Option<u32>, y: Option<u32>, z: Option<u32>) -> u32 {
Expand Down
30 changes: 19 additions & 11 deletions src/test/mir-opt/early_otherwise_branch_noopt.noopt1.EarlyOtherwiseBranch.diff
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Expand Up @@ -38,54 +38,62 @@
StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:16: 8:17
StorageDead(_4); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:16: 8:17
_8 = discriminant((_3.0: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17
switchInt(move _8) -> [0_isize: bb1, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 8:17
switchInt(move _8) -> [0_isize: bb1, 1_isize: bb4, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 8:17
}

bb1: {
_6 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17
switchInt(move _6) -> [0_isize: bb2, otherwise: bb6]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 8:17
switchInt(move _6) -> [0_isize: bb2, 1_isize: bb7, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 8:17
}

bb2: {
_0 = const 3_u32; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:12:25: 12:26
goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:12:25: 12:26
goto -> bb8; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:12:25: 12:26
}

bb3: {
_7 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17
switchInt(move _7) -> [0_isize: bb5, otherwise: bb4]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 8:17
unreachable; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17
}

bb4: {
_7 = discriminant((_3.1: std::option::Option<u32>)); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:11: 8:17
switchInt(move _7) -> [0_isize: bb6, 1_isize: bb5, otherwise: bb3]; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:8:5: 8:17
}

bb5: {
StorageLive(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:15: 9:16
_9 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:15: 9:16
StorageLive(_10); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25
_10 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:24: 9:25
_0 = const 0_u32; // scope 1 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
StorageDead(_10); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
StorageDead(_9); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
goto -> bb8; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:9:31: 9:32
}

bb5: {
bb6: {
StorageLive(_11); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:15: 10:16
_11 = (((_3.0: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:15: 10:16
_0 = const 1_u32; // scope 2 at $DIR/early_otherwise_branch_noopt.rs:10:28: 10:29
StorageDead(_11); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:28: 10:29
goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:28: 10:29
goto -> bb8; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:10:28: 10:29
}

bb6: {
bb7: {
StorageLive(_12); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:21: 11:22
_12 = (((_3.1: std::option::Option<u32>) as Some).0: u32); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:21: 11:22
_0 = const 2_u32; // scope 3 at $DIR/early_otherwise_branch_noopt.rs:11:28: 11:29
StorageDead(_12); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:28: 11:29
goto -> bb7; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:28: 11:29
goto -> bb8; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:11:28: 11:29
}

bb7: {
bb8: {
StorageDead(_3); // scope 0 at $DIR/early_otherwise_branch_noopt.rs:14:1: 14:2
return; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:14:2: 14:2
}

bb9 (cleanup): {
resume; // scope 0 at $DIR/early_otherwise_branch_noopt.rs:7:1: 14:2
}
}

2 changes: 1 addition & 1 deletion src/test/mir-opt/early_otherwise_branch_noopt.rs
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@@ -1,4 +1,4 @@
// compile-flags: -Z mir-opt-level=4 -Zunsound-mir-opts
// unit-test: EarlyOtherwiseBranch

// must not optimize as it does not follow the pattern of
// left and right hand side being the same variant
Expand Down
14 changes: 11 additions & 3 deletions src/test/mir-opt/early_otherwise_branch_soundness.no_deref_ptr.EarlyOtherwiseBranch.diff
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Expand Up @@ -19,7 +19,7 @@

bb1: {
_0 = const 0_i32; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:25:14: 25:15
return; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:25:14: 25:15
goto -> bb5; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:25:14: 25:15
}

bb2: {
Expand All @@ -29,15 +29,23 @@

bb3: {
_0 = const 0_i32; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:23:18: 23:19
return; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:23:18: 23:19
goto -> bb5; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:23:18: 23:19
}

bb4: {
StorageLive(_5); // scope 0 at $DIR/early_otherwise_branch_soundness.rs:22:18: 22:19
_5 = (((*_2) as Some).0: i32); // scope 0 at $DIR/early_otherwise_branch_soundness.rs:22:18: 22:19
_0 = _5; // scope 1 at $DIR/early_otherwise_branch_soundness.rs:22:24: 22:25
StorageDead(_5); // scope 0 at $DIR/early_otherwise_branch_soundness.rs:22:24: 22:25
return; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:22:24: 22:25
goto -> bb5; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:22:24: 22:25
}

bb5: {
return; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:27:2: 27:2
}

bb6 (cleanup): {
resume; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:18:1: 27:2
}
}

12 changes: 10 additions & 2 deletions src/test/mir-opt/early_otherwise_branch_soundness.no_downcast.EarlyOtherwiseBranch.diff
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Expand Up @@ -19,12 +19,20 @@

bb2: {
_0 = const 1_u32; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:13:38: 13:39
return; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:13:5: 13:52
goto -> bb4; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:13:5: 13:52
}

bb3: {
_0 = const 2_u32; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:13:49: 13:50
return; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:13:5: 13:52
goto -> bb4; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:13:5: 13:52
}

bb4: {
return; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:14:2: 14:2
}

bb5 (cleanup): {
resume; // scope 0 at $DIR/early_otherwise_branch_soundness.rs:12:1: 14:2
}
}

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