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Add test case

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This commit is contained in:
Wesley Wiser 2020-04-03 18:40:08 -04:00
parent df768c5c8f
commit 0e0a71a393
2 changed files with 80 additions and 0 deletions
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15
src/test/mir-opt/simplify-locals-fixedpoint.rs Normal file
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// compile-flags: -Zmir-opt-level=1
fn foo<T>() {
if let (Some(a), None) = (Option::<u8>::None, Option::<T>::None) {
if a > 42u8 {
}
}
}
fn main() {
foo::<()>();
}
// EMIT_MIR rustc.foo.SimplifyLocals.diff

65
src/test/mir-opt/simplify-locals-fixedpoint/rustc.foo.SimplifyLocals.diff Normal file
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- // 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); // bb0[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
StorageLive(_2); // bb0[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
discriminant(_2) = 0; // bb0[2]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:31: 4:49
StorageLive(_3); // bb0[3]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
discriminant(_3) = 0; // bb0[4]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:51: 4:68
(_1.0: std::option::Option<u8>) = move _2; // bb0[5]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
(_1.1: std::option::Option<T>) = move _3; // bb0[6]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:30: 4:69
StorageDead(_3); // bb0[7]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:68: 4:69
StorageDead(_2); // bb0[8]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:68: 4:69
_5 = discriminant((_1.0: std::option::Option<u8>)); // bb0[9]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
switchInt(move _5) -> [1isize: bb1, otherwise: bb3]; // bb0[10]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:13: 4:20
}
bb1: {
_4 = discriminant((_1.1: std::option::Option<T>)); // bb1[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
switchInt(move _4) -> [0isize: bb2, otherwise: bb3]; // bb1[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:22: 4:26
}
bb2: {
StorageLive(_6); // bb2[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
_6 = (((_1.0: std::option::Option<u8>) as Some).0: u8); // bb2[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:18: 4:19
StorageLive(_7); // bb2[2]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
StorageLive(_8); // bb2[3]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
_8 = _6; // bb2[4]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:13
_7 = Gt(move _8, const 42u8); // bb2[5]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:12: 5:20
// ty::Const
// + ty: u8
// + val: Value(Scalar(0x2a))
// mir::Constant
// + span: $DIR/simplify-locals-fixedpoint.rs:5:16: 5:20
// + literal: Const { ty: u8, val: Value(Scalar(0x2a)) }
StorageDead(_8); // bb2[6]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:5:19: 5:20
StorageDead(_7); // bb2[7]: scope 1 at $DIR/simplify-locals-fixedpoint.rs:8:5: 8:6
StorageDead(_6); // bb2[8]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:8:5: 8:6
goto -> bb3; // bb2[9]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:4:5: 8:6
}
bb3: {
drop(_1) -> bb4; // bb3[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:1: 9:2
}
bb4: {
StorageDead(_1); // bb4[0]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:1: 9:2
return; // bb4[1]: scope 0 at $DIR/simplify-locals-fixedpoint.rs:9:2: 9:2
}
}