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1be1c2ebcf
Inlining creates additional statements to be executed along the return edge: an assignment to the destination, storage end for temporaries. Previously those statements where inserted directly into a call target, but this is incorrect when the target has other predecessors. Avoid the issue by creating a new dedicated block for those statements. When the block happens to be redundant it will be removed by CFG simplification that follows inlining. Fixes #117355
135 lines
3.5 KiB
Diff
135 lines
3.5 KiB
Diff
- // MIR for `main` before Inline
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+ // MIR for `main` after Inline
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fn main() -> () {
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let mut _0: ();
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let _1: ();
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+ scope 1 (inlined <() as G>::call) {
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+ let _2: ();
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+ let _3: ();
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+ let _4: ();
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+ scope 2 (inlined <() as F>::call) {
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+ let _5: ();
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+ let _6: ();
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+ let _7: ();
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+ scope 3 (inlined <() as E>::call) {
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+ let _8: ();
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+ let _9: ();
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+ let _10: ();
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+ scope 4 (inlined <() as D>::call) {
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+ let _11: ();
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+ let _12: ();
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+ let _13: ();
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+ scope 5 (inlined <() as C>::call) {
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+ let _14: ();
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+ let _15: ();
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+ let _16: ();
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+ scope 6 (inlined <() as B>::call) {
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+ let _17: ();
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+ let _18: ();
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+ let _19: ();
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+ }
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+ }
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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(_1);
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- _1 = <() as G>::call() -> [return: bb1, unwind unreachable];
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+ StorageLive(_2);
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+ StorageLive(_3);
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+ StorageLive(_4);
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+ StorageLive(_5);
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+ StorageLive(_6);
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+ StorageLive(_7);
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+ StorageLive(_8);
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+ StorageLive(_9);
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+ StorageLive(_10);
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+ StorageLive(_11);
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+ StorageLive(_12);
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+ StorageLive(_13);
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+ StorageLive(_14);
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+ StorageLive(_15);
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+ StorageLive(_16);
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+ StorageLive(_17);
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+ StorageLive(_18);
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+ StorageLive(_19);
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+ _17 = <() as A>::call() -> [return: bb12, unwind unreachable];
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}
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bb1: {
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+ StorageDead(_4);
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+ StorageDead(_3);
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+ StorageDead(_2);
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StorageDead(_1);
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_0 = const ();
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return;
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+ }
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+
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+ bb2: {
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+ _4 = <() as F>::call() -> [return: bb1, unwind unreachable];
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+ }
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+
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+ bb3: {
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+ StorageDead(_7);
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+ StorageDead(_6);
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+ StorageDead(_5);
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+ _3 = <() as F>::call() -> [return: bb2, unwind unreachable];
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+ }
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+
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+ bb4: {
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+ _7 = <() as E>::call() -> [return: bb3, unwind unreachable];
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+ }
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+
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+ bb5: {
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+ StorageDead(_10);
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+ StorageDead(_9);
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+ StorageDead(_8);
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+ _6 = <() as E>::call() -> [return: bb4, unwind unreachable];
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+ }
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+
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+ bb6: {
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+ _10 = <() as D>::call() -> [return: bb5, unwind unreachable];
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+ }
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+
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+ bb7: {
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+ StorageDead(_13);
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+ StorageDead(_12);
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+ StorageDead(_11);
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+ _9 = <() as D>::call() -> [return: bb6, unwind unreachable];
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+ }
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+
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+ bb8: {
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+ _13 = <() as C>::call() -> [return: bb7, unwind unreachable];
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+ }
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+
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+ bb9: {
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+ StorageDead(_16);
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+ StorageDead(_15);
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+ StorageDead(_14);
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+ _12 = <() as C>::call() -> [return: bb8, unwind unreachable];
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+ }
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+
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+ bb10: {
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+ _16 = <() as B>::call() -> [return: bb9, unwind unreachable];
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+ }
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+
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+ bb11: {
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+ StorageDead(_19);
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+ StorageDead(_18);
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+ StorageDead(_17);
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+ _15 = <() as B>::call() -> [return: bb10, unwind unreachable];
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+ }
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+
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+ bb12: {
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+ _18 = <() as A>::call() -> [return: bb13, unwind unreachable];
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+ }
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+
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+ bb13: {
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+ _19 = <() as A>::call() -> [return: bb11, unwind unreachable];
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}
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}
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