rust/src/test/mir-opt/simplify_locals_fixedpoint.foo.SimplifyLocals.diff
Rich Kadel def932ca86 Combination of commits
Fixes multiple issue with counters, with simplification

  Includes a change to the implicit else span in ast_lowering, so coverage
  of the implicit else no longer spans the `then` block.

  Adds coverage for unused closures and async function bodies.

  Fixes: #78542

Adding unreachable regions for known MIR missing from coverage map

Cleaned up PR commits, and removed link-dead-code requirement and tests

  Coverage no longer depends on Issue #76038 (`-C link-dead-code` is
  no longer needed or enforced, so MSVC can use the same tests as
  Linux and MacOS now)

Restrict adding unreachable regions to covered files

  Improved the code that adds coverage for uncalled functions (with MIR
  but not-codegenned) to avoid generating coverage in files not already
  included in the files with covered functions.

Resolved last known issue requiring --emit llvm-ir workaround

  Fixed bugs in how unreachable code spans were added.
2020-12-03 09:50:10 -08:00

78 lines
4.8 KiB
Diff

- // MIR for `foo` before SimplifyLocals
+ // MIR for `foo` after SimplifyLocals
fn foo() -> () {
let mut _0: (); // return place in scope 0 at $DIR/simplify-locals-fixedpoint.rs:3:13: 3:13
let mut _1: (std::option::Option<u8>, std::option::Option<T>); // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
let mut _2: std::option::Option<u8>; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
let mut _3: std::option::Option<T>; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
let mut _4: isize; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
let mut _5: isize; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
let _6: u8; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
let mut _7: bool; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
let mut _8: u8; // in scope 0 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
scope 1 {
debug a => _6; // in scope 1 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
StorageLive(_2); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
discriminant(_2) = 0; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
StorageLive(_3); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
discriminant(_3) = 0; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
(_1.0: std::option::Option<u8>) = move _2; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
(_1.1: std::option::Option<T>) = move _3; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
StorageDead(_3); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:68: 4:69
StorageDead(_2); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:68: 4:69
_5 = discriminant((_1.0: std::option::Option<u8>)); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
switchInt(move _5) -> [1_isize: bb2, otherwise: bb1]; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
}
bb1: {
_0 = const (); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:8:6: 8:6
goto -> bb7; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:5: 8:6
}
bb2: {
_4 = discriminant((_1.1: std::option::Option<T>)); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
switchInt(move _4) -> [0_isize: bb3, otherwise: bb1]; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
}
bb3: {
StorageLive(_6); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
_6 = (((_1.0: std::option::Option<u8>) as Some).0: u8); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
StorageLive(_7); // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
StorageLive(_8); // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
_8 = _6; // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
_7 = Gt(move _8, const 42_u8); // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
StorageDead(_8); // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:19: 5:20
switchInt(_7) -> [false: bb4, otherwise: bb5]; // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:9: 7:10
}
bb4: {
_0 = const (); // scope 1 at $DIR/simplify-locals-fixedpoint.rs:7:10: 7:10
goto -> bb6; // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:9: 7:10
}
bb5: {
_0 = const (); // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:21: 7:10
goto -> bb6; // scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:9: 7:10
}
bb6: {
StorageDead(_7); // scope 1 at $DIR/simplify-locals-fixedpoint.rs:8:5: 8:6
StorageDead(_6); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:8:5: 8:6
goto -> bb7; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:5: 8:6
}
bb7: {
drop(_1) -> bb8; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:1: 9:2
}
bb8: {
StorageDead(_1); // scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:1: 9:2
return; // scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:2: 9:2
}
}