rust/tests/mir-opt/gvn_copy_aggregate.nest_cop...

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Diff

- // MIR for `nest_copy` before GVN
+ // MIR for `nest_copy` after GVN
fn nest_copy(_1: &NestCopy) -> NestCopy {
debug v => _1;
let mut _0: NestCopy;
let _2: i32;
let mut _6: i32;
let mut _7: u64;
let mut _8: [i8; 3];
let mut _10: i32;
let mut _11: AllCopy;
scope 1 {
debug a => _2;
let _3: u64;
scope 2 {
debug b => _3;
let _4: [i8; 3];
scope 3 {
debug c => _4;
let _5: AllCopy;
scope 4 {
debug all_copy => _5;
let _9: i32;
scope 5 {
debug d => _9;
}
}
}
}
}
bb0: {
- StorageLive(_2);
+ nop;
_2 = copy (((*_1).1: AllCopy).0: i32);
- StorageLive(_3);
+ nop;
_3 = copy (((*_1).1: AllCopy).1: u64);
- StorageLive(_4);
+ nop;
_4 = copy (((*_1).1: AllCopy).2: [i8; 3]);
- StorageLive(_5);
+ nop;
StorageLive(_6);
_6 = copy _2;
StorageLive(_7);
_7 = copy _3;
StorageLive(_8);
_8 = copy _4;
- _5 = AllCopy { a: move _6, b: move _7, c: move _8 };
+ _5 = copy ((*_1).1: AllCopy);
StorageDead(_8);
StorageDead(_7);
StorageDead(_6);
- StorageLive(_9);
+ nop;
_9 = copy ((*_1).0: i32);
StorageLive(_10);
_10 = copy _9;
StorageLive(_11);
- _11 = move _5;
- _0 = NestCopy { d: move _10, all_copy: move _11 };
+ _11 = copy _5;
+ _0 = copy (*_1);
StorageDead(_11);
StorageDead(_10);
- StorageDead(_9);
- StorageDead(_5);
- StorageDead(_4);
- StorageDead(_3);
- StorageDead(_2);
+ nop;
+ nop;
+ nop;
+ nop;
+ nop;
return;
}
}