mathieu/os-rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add mir-opt test.

Browse source
This commit is contained in:
Camille GILLOT 2023-02-18 09:35:52 +00:00
parent 9aa5c24b7d
commit 650683756f
2 changed files with 99 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

83
tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.diff Normal file
View file

@ -0,0 +1,83 @@
- // MIR for `multiple` before DataflowConstProp
+ // MIR for `multiple` after DataflowConstProp
fn multiple(_1: bool, _2: u8) -> () {
debug x => _1; // in scope 0 at $DIR/enum.rs:+0:13: +0:14
debug i => _2; // in scope 0 at $DIR/enum.rs:+0:22: +0:23
let mut _0: (); // return place in scope 0 at $DIR/enum.rs:+0:29: +0:29
let _3: std::option::Option<u8>; // in scope 0 at $DIR/enum.rs:+1:9: +1:10
let mut _4: bool; // in scope 0 at $DIR/enum.rs:+1:16: +1:17
let mut _5: u8; // in scope 0 at $DIR/enum.rs:+2:14: +2:15
let mut _7: isize; // in scope 0 at $DIR/enum.rs:+9:23: +9:30
scope 1 {
debug e => _3; // in scope 1 at $DIR/enum.rs:+1:9: +1:10
let _6: u8; // in scope 1 at $DIR/enum.rs:+9:9: +9:10
let _8: u8; // in scope 1 at $DIR/enum.rs:+9:28: +9:29
scope 2 {
debug x => _6; // in scope 2 at $DIR/enum.rs:+9:9: +9:10
let _9: u8; // in scope 2 at $DIR/enum.rs:+11:9: +11:10
scope 4 {
debug y => _9; // in scope 4 at $DIR/enum.rs:+11:9: +11:10
}
}
scope 3 {
debug i => _8; // in scope 3 at $DIR/enum.rs:+9:28: +9:29
}
}
bb0: {
StorageLive(_3); // scope 0 at $DIR/enum.rs:+1:9: +1:10
StorageLive(_4); // scope 0 at $DIR/enum.rs:+1:16: +1:17
_4 = _1; // scope 0 at $DIR/enum.rs:+1:16: +1:17
switchInt(move _4) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/enum.rs:+1:16: +1:17
}
bb1: {
StorageLive(_5); // scope 0 at $DIR/enum.rs:+2:14: +2:15
_5 = _2; // scope 0 at $DIR/enum.rs:+2:14: +2:15
_3 = Option::<u8>::Some(move _5); // scope 0 at $DIR/enum.rs:+2:9: +2:16
StorageDead(_5); // scope 0 at $DIR/enum.rs:+2:15: +2:16
goto -> bb3; // scope 0 at $DIR/enum.rs:+1:13: +5:6
}
bb2: {
_3 = Option::<u8>::None; // scope 0 at $DIR/enum.rs:+4:9: +4:13
goto -> bb3; // scope 0 at $DIR/enum.rs:+1:13: +5:6
}
bb3: {
StorageDead(_4); // scope 0 at $DIR/enum.rs:+5:5: +5:6
StorageLive(_6); // scope 1 at $DIR/enum.rs:+9:9: +9:10
_7 = discriminant(_3); // scope 1 at $DIR/enum.rs:+9:19: +9:20
switchInt(move _7) -> [0: bb4, 1: bb6, otherwise: bb5]; // scope 1 at $DIR/enum.rs:+9:13: +9:20
}
bb4: {
_6 = const 0_u8; // scope 1 at $DIR/enum.rs:+9:45: +9:46
goto -> bb7; // scope 1 at $DIR/enum.rs:+9:45: +9:46
}
bb5: {
unreachable; // scope 1 at $DIR/enum.rs:+9:19: +9:20
}
bb6: {
StorageLive(_8); // scope 1 at $DIR/enum.rs:+9:28: +9:29
_8 = ((_3 as Some).0: u8); // scope 1 at $DIR/enum.rs:+9:28: +9:29
_6 = _8; // scope 3 at $DIR/enum.rs:+9:34: +9:35
StorageDead(_8); // scope 1 at $DIR/enum.rs:+9:34: +9:35
goto -> bb7; // scope 1 at $DIR/enum.rs:+9:34: +9:35
}
bb7: {
StorageLive(_9); // scope 2 at $DIR/enum.rs:+11:9: +11:10
- _9 = _6; // scope 2 at $DIR/enum.rs:+11:13: +11:14
+ _9 = const 0_u8; // scope 2 at $DIR/enum.rs:+11:13: +11:14
_0 = const (); // scope 0 at $DIR/enum.rs:+0:29: +12:2
StorageDead(_9); // scope 2 at $DIR/enum.rs:+12:1: +12:2
StorageDead(_6); // scope 1 at $DIR/enum.rs:+12:1: +12:2
StorageDead(_3); // scope 0 at $DIR/enum.rs:+12:1: +12:2
return; // scope 0 at $DIR/enum.rs:+12:2: +12:2
}
}

16
tests/mir-opt/dataflow-const-prop/enum.rs
View file

@ -46,7 +46,23 @@ fn mutate_discriminant() -> u8 {
)
}
// EMIT_MIR enum.multiple.DataflowConstProp.diff
fn multiple(x: bool, i: u8) {
let e = if x {
Some(i)
} else {
None
};
// The dataflow state must have:
// discriminant(e) => Top
// (e as Some).0 => Top
let x = match e { Some(i) => i, None => 0 };
// Therefore, `x` should be `Top` here, and no replacement shall happen.
let y = x;
}
fn main() {
simple();
mutate_discriminant();
multiple(false, 5);
}