97 lines
2.2 KiB
Diff
97 lines
2.2 KiB
Diff
- // MIR for `loop_deref_mut` before GVN
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+ // MIR for `loop_deref_mut` after GVN
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fn loop_deref_mut(_1: &mut Value) -> Value {
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debug val => _1;
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let mut _0: Value;
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let _2: &Value;
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let _3: &Value;
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let mut _4: &Value;
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let mut _6: !;
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let mut _8: isize;
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let mut _9: !;
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let mut _10: ();
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let mut _12: i32;
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let _13: ();
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let mut _14: bool;
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let mut _15: !;
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let mut _16: Value;
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scope 1 {
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debug val_alias => _3;
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let mut _5: bool;
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scope 2 {
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debug stop => _5;
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let _7: i32;
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scope 3 {
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debug v => _7;
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let _11: Value;
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scope 4 {
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debug v => _11;
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}
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}
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}
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}
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bb0: {
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StorageLive(_4);
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_4 = &(*_1);
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_3 = get::<Value>(copy _4) -> [return: bb1, unwind unreachable];
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}
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bb1: {
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StorageDead(_4);
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StorageLive(_5);
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_5 = const false;
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_8 = discriminant((*_3));
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switchInt(move _8) -> [0: bb3, otherwise: bb2];
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}
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bb2: {
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unreachable;
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}
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bb3: {
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- StorageLive(_7);
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+ nop;
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_7 = copy (((*_3) as V0).0: i32);
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goto -> bb4;
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}
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bb4: {
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StorageLive(_11);
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StorageLive(_12);
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_12 = copy _7;
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- _11 = Value::V0(move _12);
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+ _11 = Value::V0(copy _7);
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StorageDead(_12);
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StorageLive(_14);
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_14 = copy _5;
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switchInt(move _14) -> [0: bb6, otherwise: bb5];
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}
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bb5: {
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_0 = move _11;
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StorageDead(_14);
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StorageDead(_11);
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- StorageDead(_7);
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+ nop;
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StorageDead(_5);
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return;
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}
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bb6: {
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StorageDead(_14);
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_5 = const true;
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StorageLive(_16);
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- _16 = Value::V1;
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- (*_1) = move _16;
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+ _16 = const Value::V1;
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+ (*_1) = const Value::V1;
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StorageDead(_16);
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StorageDead(_11);
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goto -> bb4;
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}
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}
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+
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+ ALLOC0 (size: 8, align: 4) { .. }
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