mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 22:41:50 +00:00
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
|
|
+ // MIR for `main` after Inline
|
|
|
|
fn main() -> () {
|
|
let mut _0: ();
|
|
let _1: ();
|
|
+ scope 1 (inlined <() as G>::call) {
|
|
+ let _2: ();
|
|
+ let _3: ();
|
|
+ let _4: ();
|
|
+ scope 2 (inlined <() as F>::call) {
|
|
+ let _5: ();
|
|
+ let _6: ();
|
|
+ let _7: ();
|
|
+ scope 3 (inlined <() as E>::call) {
|
|
+ let _8: ();
|
|
+ let _9: ();
|
|
+ let _10: ();
|
|
+ scope 4 (inlined <() as D>::call) {
|
|
+ let _11: ();
|
|
+ let _12: ();
|
|
+ let _13: ();
|
|
+ scope 5 (inlined <() as C>::call) {
|
|
+ let _14: ();
|
|
+ let _15: ();
|
|
+ let _16: ();
|
|
+ scope 6 (inlined <() as B>::call) {
|
|
+ let _17: ();
|
|
+ let _18: ();
|
|
+ let _19: ();
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
|
|
bb0: {
|
|
StorageLive(_1);
|
|
- _1 = <() as G>::call() -> [return: bb1, unwind continue];
|
|
+ StorageLive(_2);
|
|
+ StorageLive(_3);
|
|
+ StorageLive(_4);
|
|
+ StorageLive(_5);
|
|
+ StorageLive(_6);
|
|
+ StorageLive(_7);
|
|
+ StorageLive(_8);
|
|
+ StorageLive(_9);
|
|
+ StorageLive(_10);
|
|
+ StorageLive(_11);
|
|
+ StorageLive(_12);
|
|
+ StorageLive(_13);
|
|
+ StorageLive(_14);
|
|
+ StorageLive(_15);
|
|
+ StorageLive(_16);
|
|
+ StorageLive(_17);
|
|
+ StorageLive(_18);
|
|
+ StorageLive(_19);
|
|
+ _17 = <() as A>::call() -> [return: bb12, unwind continue];
|
|
}
|
|
|
|
bb1: {
|
|
+ StorageDead(_4);
|
|
+ StorageDead(_3);
|
|
+ StorageDead(_2);
|
|
StorageDead(_1);
|
|
_0 = const ();
|
|
return;
|
|
+ }
|
|
+
|
|
+ bb2: {
|
|
+ _4 = <() as F>::call() -> [return: bb1, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb3: {
|
|
+ StorageDead(_7);
|
|
+ StorageDead(_6);
|
|
+ StorageDead(_5);
|
|
+ _3 = <() as F>::call() -> [return: bb2, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb4: {
|
|
+ _7 = <() as E>::call() -> [return: bb3, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb5: {
|
|
+ StorageDead(_10);
|
|
+ StorageDead(_9);
|
|
+ StorageDead(_8);
|
|
+ _6 = <() as E>::call() -> [return: bb4, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb6: {
|
|
+ _10 = <() as D>::call() -> [return: bb5, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb7: {
|
|
+ StorageDead(_13);
|
|
+ StorageDead(_12);
|
|
+ StorageDead(_11);
|
|
+ _9 = <() as D>::call() -> [return: bb6, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb8: {
|
|
+ _13 = <() as C>::call() -> [return: bb7, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb9: {
|
|
+ StorageDead(_16);
|
|
+ StorageDead(_15);
|
|
+ StorageDead(_14);
|
|
+ _12 = <() as C>::call() -> [return: bb8, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb10: {
|
|
+ _16 = <() as B>::call() -> [return: bb9, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb11: {
|
|
+ StorageDead(_19);
|
|
+ StorageDead(_18);
|
|
+ StorageDead(_17);
|
|
+ _15 = <() as B>::call() -> [return: bb10, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb12: {
|
|
+ _18 = <() as A>::call() -> [return: bb13, unwind continue];
|
|
+ }
|
|
+
|
|
+ bb13: {
|
|
+ _19 = <() as A>::call() -> [return: bb11, unwind continue];
|
|
}
|
|
}
|
|
|