mirror of https://github.com/rust-lang/rust
105 lines
2.9 KiB
Diff
105 lines
2.9 KiB
Diff
- // MIR for `constant_index_overflow` before GVN
|
|
+ // MIR for `constant_index_overflow` after GVN
|
|
|
|
fn constant_index_overflow(_1: &[T]) -> () {
|
|
debug x => _1;
|
|
let mut _0: ();
|
|
let _2: usize;
|
|
let mut _4: bool;
|
|
let mut _5: usize;
|
|
let mut _6: usize;
|
|
let mut _7: &[T];
|
|
let _8: usize;
|
|
let mut _9: usize;
|
|
let mut _10: bool;
|
|
let _11: usize;
|
|
let mut _12: usize;
|
|
let mut _13: bool;
|
|
let mut _14: T;
|
|
scope 1 {
|
|
debug a => _2;
|
|
let _3: T;
|
|
scope 2 {
|
|
debug b => _3;
|
|
}
|
|
}
|
|
|
|
bb0: {
|
|
- StorageLive(_2);
|
|
- _2 = const core::num::<impl u64>::MAX as usize (IntToInt);
|
|
+ nop;
|
|
+ _2 = const usize::MAX;
|
|
StorageLive(_3);
|
|
StorageLive(_4);
|
|
StorageLive(_5);
|
|
- _5 = _2;
|
|
+ _5 = const usize::MAX;
|
|
StorageLive(_6);
|
|
StorageLive(_7);
|
|
_7 = &(*_1);
|
|
_6 = core::slice::<impl [T]>::len(move _7) -> [return: bb1, unwind unreachable];
|
|
}
|
|
|
|
bb1: {
|
|
StorageDead(_7);
|
|
- _4 = Lt(move _5, move _6);
|
|
+ _4 = Lt(const usize::MAX, move _6);
|
|
switchInt(move _4) -> [0: bb4, otherwise: bb2];
|
|
}
|
|
|
|
bb2: {
|
|
StorageDead(_6);
|
|
StorageDead(_5);
|
|
StorageLive(_8);
|
|
- _8 = _2;
|
|
+ _8 = const usize::MAX;
|
|
_9 = Len((*_1));
|
|
- _10 = Lt(_8, _9);
|
|
- assert(move _10, "index out of bounds: the length is {} but the index is {}", move _9, _8) -> [success: bb3, unwind unreachable];
|
|
+ _10 = Lt(const usize::MAX, _9);
|
|
+ assert(move _10, "index out of bounds: the length is {} but the index is {}", move _9, const usize::MAX) -> [success: bb3, unwind unreachable];
|
|
}
|
|
|
|
bb3: {
|
|
- _3 = (*_1)[_8];
|
|
+ _3 = (*_1)[_2];
|
|
StorageDead(_8);
|
|
goto -> bb6;
|
|
}
|
|
|
|
bb4: {
|
|
StorageDead(_6);
|
|
StorageDead(_5);
|
|
StorageLive(_11);
|
|
_11 = const 0_usize;
|
|
_12 = Len((*_1));
|
|
- _13 = Lt(_11, _12);
|
|
- assert(move _13, "index out of bounds: the length is {} but the index is {}", move _12, _11) -> [success: bb5, unwind unreachable];
|
|
+ _13 = Lt(const 0_usize, _12);
|
|
+ assert(move _13, "index out of bounds: the length is {} but the index is {}", move _12, const 0_usize) -> [success: bb5, unwind unreachable];
|
|
}
|
|
|
|
bb5: {
|
|
- _3 = (*_1)[_11];
|
|
+ _3 = (*_1)[0 of 1];
|
|
StorageDead(_11);
|
|
goto -> bb6;
|
|
}
|
|
|
|
bb6: {
|
|
StorageDead(_4);
|
|
StorageLive(_14);
|
|
_14 = _3;
|
|
_0 = opaque::<T>(move _14) -> [return: bb7, unwind unreachable];
|
|
}
|
|
|
|
bb7: {
|
|
StorageDead(_14);
|
|
StorageDead(_3);
|
|
- StorageDead(_2);
|
|
+ nop;
|
|
return;
|
|
}
|
|
}
|
|
|