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|
- // 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 _ 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;
}
}
|
