diff options
Diffstat (limited to 'tests/mir-opt/sroa')
12 files changed, 833 insertions, 0 deletions
diff --git a/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..579587a43 --- /dev/null +++ b/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff @@ -0,0 +1,214 @@ +- // MIR for `foo` before ScalarReplacementOfAggregates ++ // MIR for `foo` after ScalarReplacementOfAggregates + + fn foo() -> () { + let mut _0: (); // return place in scope 0 at $DIR/lifetimes.rs:+0:18: +0:18 + let _1: Foo<T>; // in scope 0 at $DIR/lifetimes.rs:+1:9: +1:12 + let mut _2: std::result::Result<std::boxed::Box<dyn std::fmt::Display>, <T as Err>::Err>; // in scope 0 at $DIR/lifetimes.rs:+2:12: +2:31 + let mut _3: std::boxed::Box<dyn std::fmt::Display>; // in scope 0 at $DIR/lifetimes.rs:+2:15: +2:30 + let mut _4: std::boxed::Box<u32>; // in scope 0 at $DIR/lifetimes.rs:+2:15: +2:30 + let mut _7: isize; // in scope 0 at $DIR/lifetimes.rs:+9:12: +9:17 + let _9: (); // in scope 0 at $SRC_DIR/std/src/macros.rs:LL:COL + let _10: (); // in scope 0 at $SRC_DIR/std/src/macros.rs:LL:COL + let mut _11: std::fmt::Arguments<'_>; // in scope 0 at $SRC_DIR/std/src/macros.rs:LL:COL + let mut _12: &[&str]; // in scope 0 at $DIR/lifetimes.rs:+10:19: +10:28 + let mut _13: &[&str; 3]; // in scope 0 at $DIR/lifetimes.rs:+10:19: +10:28 + let _14: &[&str; 3]; // in scope 0 at $DIR/lifetimes.rs:+10:19: +10:28 + let _15: [&str; 3]; // in scope 0 at $DIR/lifetimes.rs:+10:19: +10:28 + let mut _16: &[core::fmt::ArgumentV1<'_>]; // in scope 0 at $SRC_DIR/std/src/macros.rs:LL:COL + let mut _17: &[core::fmt::ArgumentV1<'_>; 2]; // in scope 0 at $SRC_DIR/std/src/macros.rs:LL:COL + let _18: &[core::fmt::ArgumentV1<'_>; 2]; // in scope 0 at $SRC_DIR/std/src/macros.rs:LL:COL + let _19: [core::fmt::ArgumentV1<'_>; 2]; // in scope 0 at $SRC_DIR/std/src/macros.rs:LL:COL + let mut _20: core::fmt::ArgumentV1<'_>; // in scope 0 at $DIR/lifetimes.rs:+10:20: +10:23 + let mut _21: &std::boxed::Box<dyn std::fmt::Display>; // in scope 0 at $DIR/lifetimes.rs:+10:20: +10:23 + let _22: &std::boxed::Box<dyn std::fmt::Display>; // in scope 0 at $DIR/lifetimes.rs:+10:20: +10:23 + let mut _23: core::fmt::ArgumentV1<'_>; // in scope 0 at $DIR/lifetimes.rs:+10:24: +10:27 + let mut _24: &u32; // in scope 0 at $DIR/lifetimes.rs:+10:24: +10:27 + let _25: &u32; // in scope 0 at $DIR/lifetimes.rs:+10:24: +10:27 + let mut _27: bool; // in scope 0 at $DIR/lifetimes.rs:+12:1: +12:2 + let mut _28: isize; // in scope 0 at $DIR/lifetimes.rs:+12:1: +12:2 + let mut _29: isize; // in scope 0 at $DIR/lifetimes.rs:+12:1: +12:2 + let mut _30: isize; // in scope 0 at $DIR/lifetimes.rs:+12:1: +12:2 ++ let _31: std::result::Result<std::boxed::Box<dyn std::fmt::Display>, <T as Err>::Err>; // in scope 0 at $DIR/lifetimes.rs:+1:9: +1:12 ++ let _32: u32; // in scope 0 at $DIR/lifetimes.rs:+1:9: +1:12 + scope 1 { +- debug foo => _1; // in scope 1 at $DIR/lifetimes.rs:+1:9: +1:12 ++ debug foo => Foo<T>{ .0 => _31, .1 => _32, }; // in scope 1 at $DIR/lifetimes.rs:+1:9: +1:12 + let _5: std::result::Result<std::boxed::Box<dyn std::fmt::Display>, <T as Err>::Err>; // in scope 1 at $DIR/lifetimes.rs:+6:9: +6:10 + scope 2 { + debug x => _5; // in scope 2 at $DIR/lifetimes.rs:+6:9: +6:10 + let _6: u32; // in scope 2 at $DIR/lifetimes.rs:+7:9: +7:10 + scope 3 { + debug y => _6; // in scope 3 at $DIR/lifetimes.rs:+7:9: +7:10 + scope 4 { + debug x => _8; // in scope 4 at $DIR/lifetimes.rs:+9:15: +9:16 + let _8: std::boxed::Box<dyn std::fmt::Display>; // in scope 4 at $DIR/lifetimes.rs:+9:15: +9:16 + let mut _26: &[&str; 3]; // in scope 4 at $DIR/lifetimes.rs:+10:19: +10:28 + } + } + } + } + + bb0: { + _27 = const false; // scope 0 at $DIR/lifetimes.rs:+1:9: +1:12 +- StorageLive(_1); // scope 0 at $DIR/lifetimes.rs:+1:9: +1:12 ++ StorageLive(_31); // scope 0 at $DIR/lifetimes.rs:+1:9: +1:12 ++ StorageLive(_32); // scope 0 at $DIR/lifetimes.rs:+1:9: +1:12 ++ nop; // scope 0 at $DIR/lifetimes.rs:+1:9: +1:12 + StorageLive(_2); // scope 0 at $DIR/lifetimes.rs:+2:12: +2:31 + StorageLive(_3); // scope 0 at $DIR/lifetimes.rs:+2:15: +2:30 + StorageLive(_4); // scope 0 at $DIR/lifetimes.rs:+2:15: +2:30 + _4 = Box::<u32>::new(const 5_u32) -> [return: bb1, unwind unreachable]; // scope 0 at $DIR/lifetimes.rs:+2:15: +2:30 + // mir::Constant + // + span: $DIR/lifetimes.rs:19:15: 19:23 + // + user_ty: UserType(1) + // + literal: Const { ty: fn(u32) -> Box<u32> {Box::<u32>::new}, val: Value(<ZST>) } + } + + bb1: { + _3 = move _4 as std::boxed::Box<dyn std::fmt::Display> (Pointer(Unsize)); // scope 0 at $DIR/lifetimes.rs:+2:15: +2:30 + StorageDead(_4); // scope 0 at $DIR/lifetimes.rs:+2:29: +2:30 + _2 = Result::<Box<dyn std::fmt::Display>, <T as Err>::Err>::Ok(move _3); // scope 0 at $DIR/lifetimes.rs:+2:12: +2:31 + StorageDead(_3); // scope 0 at $DIR/lifetimes.rs:+2:30: +2:31 +- _1 = Foo::<T> { x: move _2, y: const 7_u32 }; // scope 0 at $DIR/lifetimes.rs:+1:23: +4:6 ++ _31 = move _2; // scope 0 at $DIR/lifetimes.rs:+1:23: +4:6 ++ _32 = const 7_u32; // scope 0 at $DIR/lifetimes.rs:+1:23: +4:6 ++ nop; // scope 0 at $DIR/lifetimes.rs:+1:23: +4:6 + StorageDead(_2); // scope 0 at $DIR/lifetimes.rs:+4:5: +4:6 + StorageLive(_5); // scope 1 at $DIR/lifetimes.rs:+6:9: +6:10 + _27 = const true; // scope 1 at $DIR/lifetimes.rs:+6:13: +6:18 +- _5 = move (_1.0: std::result::Result<std::boxed::Box<dyn std::fmt::Display>, <T as Err>::Err>); // scope 1 at $DIR/lifetimes.rs:+6:13: +6:18 ++ _5 = move _31; // scope 1 at $DIR/lifetimes.rs:+6:13: +6:18 + StorageLive(_6); // scope 2 at $DIR/lifetimes.rs:+7:9: +7:10 +- _6 = (_1.1: u32); // scope 2 at $DIR/lifetimes.rs:+7:13: +7:18 ++ _6 = _32; // scope 2 at $DIR/lifetimes.rs:+7:13: +7:18 + _7 = discriminant(_5); // scope 4 at $DIR/lifetimes.rs:+9:12: +9:17 + switchInt(move _7) -> [0: bb2, otherwise: bb7]; // scope 4 at $DIR/lifetimes.rs:+9:12: +9:17 + } + + bb2: { + StorageLive(_8); // scope 4 at $DIR/lifetimes.rs:+9:15: +9:16 + _27 = const false; // scope 4 at $DIR/lifetimes.rs:+9:15: +9:16 + _8 = move ((_5 as Ok).0: std::boxed::Box<dyn std::fmt::Display>); // scope 4 at $DIR/lifetimes.rs:+9:15: +9:16 + StorageLive(_9); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageLive(_10); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageLive(_11); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageLive(_12); // scope 4 at $DIR/lifetimes.rs:+10:19: +10:28 + StorageLive(_13); // scope 4 at $DIR/lifetimes.rs:+10:19: +10:28 + StorageLive(_14); // scope 4 at $DIR/lifetimes.rs:+10:19: +10:28 + _26 = const _; // scope 4 at $DIR/lifetimes.rs:+10:19: +10:28 + // mir::Constant + // + span: $DIR/lifetimes.rs:27:19: 27:28 + // + literal: Const { ty: &[&str; 3], val: Unevaluated(foo, [T], Some(promoted[0])) } + _14 = &(*_26); // scope 4 at $DIR/lifetimes.rs:+10:19: +10:28 + _13 = &(*_14); // scope 4 at $DIR/lifetimes.rs:+10:19: +10:28 + _12 = move _13 as &[&str] (Pointer(Unsize)); // scope 4 at $DIR/lifetimes.rs:+10:19: +10:28 + StorageDead(_13); // scope 4 at $DIR/lifetimes.rs:+10:27: +10:28 + StorageLive(_16); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageLive(_17); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageLive(_18); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageLive(_19); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageLive(_20); // scope 4 at $DIR/lifetimes.rs:+10:20: +10:23 + StorageLive(_21); // scope 4 at $DIR/lifetimes.rs:+10:20: +10:23 + StorageLive(_22); // scope 4 at $DIR/lifetimes.rs:+10:20: +10:23 + _22 = &_8; // scope 4 at $DIR/lifetimes.rs:+10:20: +10:23 + _21 = &(*_22); // scope 4 at $DIR/lifetimes.rs:+10:20: +10:23 + _20 = core::fmt::ArgumentV1::<'_>::new_display::<Box<dyn std::fmt::Display>>(move _21) -> [return: bb3, unwind unreachable]; // scope 4 at $DIR/lifetimes.rs:+10:20: +10:23 + // mir::Constant + // + span: $DIR/lifetimes.rs:27:20: 27:23 + // + user_ty: UserType(4) + // + literal: Const { ty: for<'b> fn(&'b Box<dyn std::fmt::Display>) -> core::fmt::ArgumentV1<'b> {core::fmt::ArgumentV1::<'_>::new_display::<Box<dyn std::fmt::Display>>}, val: Value(<ZST>) } + } + + bb3: { + StorageDead(_21); // scope 4 at $DIR/lifetimes.rs:+10:22: +10:23 + StorageLive(_23); // scope 4 at $DIR/lifetimes.rs:+10:24: +10:27 + StorageLive(_24); // scope 4 at $DIR/lifetimes.rs:+10:24: +10:27 + StorageLive(_25); // scope 4 at $DIR/lifetimes.rs:+10:24: +10:27 + _25 = &_6; // scope 4 at $DIR/lifetimes.rs:+10:24: +10:27 + _24 = &(*_25); // scope 4 at $DIR/lifetimes.rs:+10:24: +10:27 + _23 = core::fmt::ArgumentV1::<'_>::new_display::<u32>(move _24) -> [return: bb4, unwind unreachable]; // scope 4 at $DIR/lifetimes.rs:+10:24: +10:27 + // mir::Constant + // + span: $DIR/lifetimes.rs:27:24: 27:27 + // + user_ty: UserType(5) + // + literal: Const { ty: for<'b> fn(&'b u32) -> core::fmt::ArgumentV1<'b> {core::fmt::ArgumentV1::<'_>::new_display::<u32>}, val: Value(<ZST>) } + } + + bb4: { + StorageDead(_24); // scope 4 at $DIR/lifetimes.rs:+10:26: +10:27 + _19 = [move _20, move _23]; // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_23); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_20); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + _18 = &_19; // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + _17 = &(*_18); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + _16 = move _17 as &[core::fmt::ArgumentV1<'_>] (Pointer(Unsize)); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_17); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + _11 = Arguments::<'_>::new_v1(move _12, move _16) -> [return: bb5, unwind unreachable]; // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + // mir::Constant + // + span: $SRC_DIR/std/src/macros.rs:LL:COL + // + user_ty: UserType(3) + // + literal: Const { ty: fn(&[&'static str], &[core::fmt::ArgumentV1<'_>]) -> Arguments<'_> {Arguments::<'_>::new_v1}, val: Value(<ZST>) } + } + + bb5: { + StorageDead(_16); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_12); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + _10 = _eprint(move _11) -> [return: bb6, unwind unreachable]; // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + // mir::Constant + // + span: $SRC_DIR/std/src/macros.rs:LL:COL + // + literal: Const { ty: for<'a> fn(Arguments<'a>) {_eprint}, val: Value(<ZST>) } + } + + bb6: { + StorageDead(_11); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_25); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_22); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_19); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_18); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_14); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_10); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + _9 = const (); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + StorageDead(_9); // scope 4 at $SRC_DIR/std/src/macros.rs:LL:COL + _0 = const (); // scope 4 at $DIR/lifetimes.rs:+9:22: +11:6 + drop(_8) -> [return: bb8, unwind unreachable]; // scope 3 at $DIR/lifetimes.rs:+11:5: +11:6 + } + + bb7: { + _0 = const (); // scope 3 at $DIR/lifetimes.rs:+11:6: +11:6 + goto -> bb9; // scope 3 at $DIR/lifetimes.rs:+9:5: +11:6 + } + + bb8: { + StorageDead(_8); // scope 3 at $DIR/lifetimes.rs:+11:5: +11:6 + goto -> bb9; // scope 3 at $DIR/lifetimes.rs:+9:5: +11:6 + } + + bb9: { + StorageDead(_6); // scope 2 at $DIR/lifetimes.rs:+12:1: +12:2 + _28 = discriminant(_5); // scope 1 at $DIR/lifetimes.rs:+12:1: +12:2 + switchInt(move _28) -> [0: bb11, otherwise: bb13]; // scope 1 at $DIR/lifetimes.rs:+12:1: +12:2 + } + + bb10: { + _27 = const false; // scope 1 at $DIR/lifetimes.rs:+12:1: +12:2 + StorageDead(_5); // scope 1 at $DIR/lifetimes.rs:+12:1: +12:2 +- StorageDead(_1); // scope 0 at $DIR/lifetimes.rs:+12:1: +12:2 ++ StorageDead(_31); // scope 0 at $DIR/lifetimes.rs:+12:1: +12:2 ++ StorageDead(_32); // scope 0 at $DIR/lifetimes.rs:+12:1: +12:2 ++ nop; // scope 0 at $DIR/lifetimes.rs:+12:1: +12:2 + return; // scope 0 at $DIR/lifetimes.rs:+12:2: +12:2 + } + + bb11: { + switchInt(_27) -> [0: bb10, otherwise: bb12]; // scope 1 at $DIR/lifetimes.rs:+12:1: +12:2 + } + + bb12: { + drop(((_5 as Ok).0: std::boxed::Box<dyn std::fmt::Display>)) -> [return: bb10, unwind unreachable]; // scope 1 at $DIR/lifetimes.rs:+12:1: +12:2 + } + + bb13: { + drop(_5) -> [return: bb10, unwind unreachable]; // scope 1 at $DIR/lifetimes.rs:+12:1: +12:2 + } + } + diff --git a/tests/mir-opt/sroa/lifetimes.rs b/tests/mir-opt/sroa/lifetimes.rs new file mode 100644 index 000000000..2356d212f --- /dev/null +++ b/tests/mir-opt/sroa/lifetimes.rs @@ -0,0 +1,37 @@ +// unit-test: ScalarReplacementOfAggregates +// compile-flags: -Cpanic=abort +// no-prefer-dynamic + +trait Err { + type Err; +} + +struct Foo<T: Err> { + // Check that the `'static` lifetime is erased when creating the local for `x`, + // even if we fail to normalize the type. + x: Result<Box<dyn std::fmt::Display + 'static>, <T as Err>::Err>, + y: u32, +} + +// EMIT_MIR lifetimes.foo.ScalarReplacementOfAggregates.diff +fn foo<T: Err>() { + let foo: Foo<T> = Foo { + x: Ok(Box::new(5_u32)), + y: 7_u32, + }; + + let x = foo.x; + let y = foo.y; + + if let Ok(x) = x { + eprintln!("{x} {y}"); + } +} + +impl Err for () { + type Err = (); +} + +fn main() { + foo::<()>() +} diff --git a/tests/mir-opt/sroa/structs.constant.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.constant.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..647681f0e --- /dev/null +++ b/tests/mir-opt/sroa/structs.constant.ScalarReplacementOfAggregates.diff @@ -0,0 +1,46 @@ +- // MIR for `constant` before ScalarReplacementOfAggregates ++ // MIR for `constant` after ScalarReplacementOfAggregates + + fn constant() -> () { + let mut _0: (); // return place in scope 0 at $DIR/structs.rs:+0:15: +0:15 + let _1: (usize, u8); // in scope 0 at $DIR/structs.rs:+2:9: +2:10 ++ let _4: usize; // in scope 0 at $DIR/structs.rs:+2:9: +2:10 ++ let _5: u8; // in scope 0 at $DIR/structs.rs:+2:9: +2:10 + scope 1 { +- debug y => _1; // in scope 1 at $DIR/structs.rs:+2:9: +2:10 ++ debug y => (usize, u8){ .0 => _4, .1 => _5, }; // in scope 1 at $DIR/structs.rs:+2:9: +2:10 + let _2: usize; // in scope 1 at $DIR/structs.rs:+3:9: +3:10 + scope 2 { + debug t => _2; // in scope 2 at $DIR/structs.rs:+3:9: +3:10 + let _3: u8; // in scope 2 at $DIR/structs.rs:+4:9: +4:10 + scope 3 { + debug u => _3; // in scope 3 at $DIR/structs.rs:+4:9: +4:10 + } + } + } + + bb0: { +- StorageLive(_1); // scope 0 at $DIR/structs.rs:+2:9: +2:10 ++ StorageLive(_4); // scope 0 at $DIR/structs.rs:+2:9: +2:10 ++ StorageLive(_5); // scope 0 at $DIR/structs.rs:+2:9: +2:10 ++ nop; // scope 0 at $DIR/structs.rs:+2:9: +2:10 + _1 = const _; // scope 0 at $DIR/structs.rs:+2:13: +2:14 ++ _4 = move (_1.0: usize); // scope 1 at $DIR/structs.rs:+3:9: +3:10 ++ _5 = move (_1.1: u8); // scope 1 at $DIR/structs.rs:+3:9: +3:10 + StorageLive(_2); // scope 1 at $DIR/structs.rs:+3:9: +3:10 +- _2 = (_1.0: usize); // scope 1 at $DIR/structs.rs:+3:13: +3:16 ++ _2 = _4; // scope 1 at $DIR/structs.rs:+3:13: +3:16 + StorageLive(_3); // scope 2 at $DIR/structs.rs:+4:9: +4:10 +- _3 = (_1.1: u8); // scope 2 at $DIR/structs.rs:+4:13: +4:16 ++ _3 = _5; // scope 2 at $DIR/structs.rs:+4:13: +4:16 + _0 = const (); // scope 0 at $DIR/structs.rs:+0:15: +5:2 + StorageDead(_3); // scope 2 at $DIR/structs.rs:+5:1: +5:2 + StorageDead(_2); // scope 1 at $DIR/structs.rs:+5:1: +5:2 +- StorageDead(_1); // scope 0 at $DIR/structs.rs:+5:1: +5:2 ++ StorageDead(_4); // scope 0 at $DIR/structs.rs:+5:1: +5:2 ++ StorageDead(_5); // scope 0 at $DIR/structs.rs:+5:1: +5:2 ++ nop; // scope 0 at $DIR/structs.rs:+5:1: +5:2 + return; // scope 0 at $DIR/structs.rs:+5:2: +5:2 + } + } + diff --git a/tests/mir-opt/sroa/structs.copies.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.copies.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..b0b0da886 --- /dev/null +++ b/tests/mir-opt/sroa/structs.copies.ScalarReplacementOfAggregates.diff @@ -0,0 +1,91 @@ +- // MIR for `copies` before ScalarReplacementOfAggregates ++ // MIR for `copies` after ScalarReplacementOfAggregates + + fn copies(_1: Foo) -> () { + debug x => _1; // in scope 0 at $DIR/structs.rs:+0:11: +0:12 + let mut _0: (); // return place in scope 0 at $DIR/structs.rs:+0:19: +0:19 + let _2: Foo; // in scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ let _11: u8; // in scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ let _12: (); // in scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ let _13: &str; // in scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ let _14: std::option::Option<isize>; // in scope 0 at $DIR/structs.rs:+1:9: +1:10 + scope 1 { +- debug y => _2; // in scope 1 at $DIR/structs.rs:+1:9: +1:10 ++ debug y => Foo{ .0 => _11, .1 => _12, .2 => _13, .3 => _14, }; // in scope 1 at $DIR/structs.rs:+1:9: +1:10 + let _3: u8; // in scope 1 at $DIR/structs.rs:+2:9: +2:10 + scope 2 { + debug t => _3; // in scope 2 at $DIR/structs.rs:+2:9: +2:10 + let _4: &str; // in scope 2 at $DIR/structs.rs:+3:9: +3:10 + scope 3 { + debug u => _4; // in scope 3 at $DIR/structs.rs:+3:9: +3:10 + let _5: Foo; // in scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ let _7: u8; // in scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ let _8: (); // in scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ let _9: &str; // in scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ let _10: std::option::Option<isize>; // in scope 3 at $DIR/structs.rs:+4:9: +4:10 + scope 4 { +- debug z => _5; // in scope 4 at $DIR/structs.rs:+4:9: +4:10 ++ debug z => Foo{ .0 => _7, .1 => _8, .2 => _9, .3 => _10, }; // in scope 4 at $DIR/structs.rs:+4:9: +4:10 + let _6: (); // in scope 4 at $DIR/structs.rs:+5:9: +5:10 + scope 5 { + debug a => _6; // in scope 5 at $DIR/structs.rs:+5:9: +5:10 + } + } + } + } + } + + bb0: { +- StorageLive(_2); // scope 0 at $DIR/structs.rs:+1:9: +1:10 +- _2 = _1; // scope 0 at $DIR/structs.rs:+1:13: +1:14 ++ StorageLive(_11); // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ StorageLive(_12); // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ StorageLive(_13); // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ StorageLive(_14); // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ nop; // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ _11 = (_1.0: u8); // scope 0 at $DIR/structs.rs:+1:13: +1:14 ++ _12 = (_1.1: ()); // scope 0 at $DIR/structs.rs:+1:13: +1:14 ++ _13 = (_1.2: &str); // scope 0 at $DIR/structs.rs:+1:13: +1:14 ++ _14 = (_1.3: std::option::Option<isize>); // scope 0 at $DIR/structs.rs:+1:13: +1:14 ++ nop; // scope 0 at $DIR/structs.rs:+1:13: +1:14 + StorageLive(_3); // scope 1 at $DIR/structs.rs:+2:9: +2:10 +- _3 = (_2.0: u8); // scope 1 at $DIR/structs.rs:+2:13: +2:16 ++ _3 = _11; // scope 1 at $DIR/structs.rs:+2:13: +2:16 + StorageLive(_4); // scope 2 at $DIR/structs.rs:+3:9: +3:10 +- _4 = (_2.2: &str); // scope 2 at $DIR/structs.rs:+3:13: +3:16 +- StorageLive(_5); // scope 3 at $DIR/structs.rs:+4:9: +4:10 +- _5 = _2; // scope 3 at $DIR/structs.rs:+4:13: +4:14 ++ _4 = _13; // scope 2 at $DIR/structs.rs:+3:13: +3:16 ++ StorageLive(_7); // scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ StorageLive(_8); // scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ StorageLive(_9); // scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ StorageLive(_10); // scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ nop; // scope 3 at $DIR/structs.rs:+4:9: +4:10 ++ _7 = _11; // scope 3 at $DIR/structs.rs:+4:13: +4:14 ++ _8 = _12; // scope 3 at $DIR/structs.rs:+4:13: +4:14 ++ _9 = _13; // scope 3 at $DIR/structs.rs:+4:13: +4:14 ++ _10 = _14; // scope 3 at $DIR/structs.rs:+4:13: +4:14 ++ nop; // scope 3 at $DIR/structs.rs:+4:13: +4:14 + StorageLive(_6); // scope 4 at $DIR/structs.rs:+5:9: +5:10 +- _6 = (_5.1: ()); // scope 4 at $DIR/structs.rs:+5:13: +5:16 ++ _6 = _8; // scope 4 at $DIR/structs.rs:+5:13: +5:16 + _0 = const (); // scope 0 at $DIR/structs.rs:+0:19: +6:2 + StorageDead(_6); // scope 4 at $DIR/structs.rs:+6:1: +6:2 +- StorageDead(_5); // scope 3 at $DIR/structs.rs:+6:1: +6:2 ++ StorageDead(_7); // scope 3 at $DIR/structs.rs:+6:1: +6:2 ++ StorageDead(_8); // scope 3 at $DIR/structs.rs:+6:1: +6:2 ++ StorageDead(_9); // scope 3 at $DIR/structs.rs:+6:1: +6:2 ++ StorageDead(_10); // scope 3 at $DIR/structs.rs:+6:1: +6:2 ++ nop; // scope 3 at $DIR/structs.rs:+6:1: +6:2 + StorageDead(_4); // scope 2 at $DIR/structs.rs:+6:1: +6:2 + StorageDead(_3); // scope 1 at $DIR/structs.rs:+6:1: +6:2 +- StorageDead(_2); // scope 0 at $DIR/structs.rs:+6:1: +6:2 ++ StorageDead(_11); // scope 0 at $DIR/structs.rs:+6:1: +6:2 ++ StorageDead(_12); // scope 0 at $DIR/structs.rs:+6:1: +6:2 ++ StorageDead(_13); // scope 0 at $DIR/structs.rs:+6:1: +6:2 ++ StorageDead(_14); // scope 0 at $DIR/structs.rs:+6:1: +6:2 ++ nop; // scope 0 at $DIR/structs.rs:+6:1: +6:2 + return; // scope 0 at $DIR/structs.rs:+6:2: +6:2 + } + } + diff --git a/tests/mir-opt/sroa/structs.dropping.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.dropping.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..d378c260a --- /dev/null +++ b/tests/mir-opt/sroa/structs.dropping.ScalarReplacementOfAggregates.diff @@ -0,0 +1,44 @@ +- // MIR for `dropping` before ScalarReplacementOfAggregates ++ // MIR for `dropping` after ScalarReplacementOfAggregates + + fn dropping() -> () { + let mut _0: (); // return place in scope 0 at $DIR/structs.rs:+0:19: +0:19 + let _1: Tag; // in scope 0 at $DIR/structs.rs:+1:5: +1:32 + let mut _2: S; // in scope 0 at $DIR/structs.rs:+1:5: +1:30 + let mut _3: Tag; // in scope 0 at $DIR/structs.rs:+1:7: +1:13 + let mut _4: Tag; // in scope 0 at $DIR/structs.rs:+1:15: +1:21 + let mut _5: Tag; // in scope 0 at $DIR/structs.rs:+1:23: +1:29 + + bb0: { + StorageLive(_1); // scope 0 at $DIR/structs.rs:+1:5: +1:32 + StorageLive(_2); // scope 0 at $DIR/structs.rs:+1:5: +1:30 + StorageLive(_3); // scope 0 at $DIR/structs.rs:+1:7: +1:13 + _3 = Tag(const 0_usize); // scope 0 at $DIR/structs.rs:+1:7: +1:13 + StorageLive(_4); // scope 0 at $DIR/structs.rs:+1:15: +1:21 + _4 = Tag(const 1_usize); // scope 0 at $DIR/structs.rs:+1:15: +1:21 + StorageLive(_5); // scope 0 at $DIR/structs.rs:+1:23: +1:29 + _5 = Tag(const 2_usize); // scope 0 at $DIR/structs.rs:+1:23: +1:29 + _2 = S(move _3, move _4, move _5); // scope 0 at $DIR/structs.rs:+1:5: +1:30 + StorageDead(_5); // scope 0 at $DIR/structs.rs:+1:29: +1:30 + StorageDead(_4); // scope 0 at $DIR/structs.rs:+1:29: +1:30 + StorageDead(_3); // scope 0 at $DIR/structs.rs:+1:29: +1:30 + _1 = move (_2.1: Tag); // scope 0 at $DIR/structs.rs:+1:5: +1:32 + drop(_1) -> [return: bb1, unwind unreachable]; // scope 0 at $DIR/structs.rs:+1:32: +1:33 + } + + bb1: { + drop((_2.0: Tag)) -> [return: bb3, unwind unreachable]; // scope 0 at $DIR/structs.rs:+1:32: +1:33 + } + + bb2: { + StorageDead(_2); // scope 0 at $DIR/structs.rs:+1:32: +1:33 + StorageDead(_1); // scope 0 at $DIR/structs.rs:+1:32: +1:33 + _0 = const (); // scope 0 at $DIR/structs.rs:+0:19: +2:2 + return; // scope 0 at $DIR/structs.rs:+2:2: +2:2 + } + + bb3: { + drop((_2.2: Tag)) -> [return: bb2, unwind unreachable]; // scope 0 at $DIR/structs.rs:+1:32: +1:33 + } + } + diff --git a/tests/mir-opt/sroa/structs.enums.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.enums.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..ff1e30c2d --- /dev/null +++ b/tests/mir-opt/sroa/structs.enums.ScalarReplacementOfAggregates.diff @@ -0,0 +1,43 @@ +- // MIR for `enums` before ScalarReplacementOfAggregates ++ // MIR for `enums` after ScalarReplacementOfAggregates + + fn enums(_1: usize) -> usize { + debug a => _1; // in scope 0 at $DIR/structs.rs:+0:14: +0:15 + let mut _0: usize; // return place in scope 0 at $DIR/structs.rs:+0:27: +0:32 + let mut _2: std::option::Option<usize>; // in scope 0 at $DIR/structs.rs:+1:22: +1:29 + let mut _3: usize; // in scope 0 at $DIR/structs.rs:+1:27: +1:28 + let mut _4: isize; // in scope 0 at $DIR/structs.rs:+1:12: +1:19 + scope 1 { + debug a => _5; // in scope 1 at $DIR/structs.rs:+1:17: +1:18 + let _5: usize; // in scope 1 at $DIR/structs.rs:+1:17: +1:18 + } + + bb0: { + StorageLive(_2); // scope 1 at $DIR/structs.rs:+1:22: +1:29 + StorageLive(_3); // scope 1 at $DIR/structs.rs:+1:27: +1:28 + _3 = _1; // scope 1 at $DIR/structs.rs:+1:27: +1:28 + _2 = Option::<usize>::Some(move _3); // scope 1 at $DIR/structs.rs:+1:22: +1:29 + StorageDead(_3); // scope 1 at $DIR/structs.rs:+1:28: +1:29 + _4 = discriminant(_2); // scope 1 at $DIR/structs.rs:+1:12: +1:19 + switchInt(move _4) -> [1: bb1, otherwise: bb2]; // scope 1 at $DIR/structs.rs:+1:12: +1:19 + } + + bb1: { + StorageLive(_5); // scope 1 at $DIR/structs.rs:+1:17: +1:18 + _5 = ((_2 as Some).0: usize); // scope 1 at $DIR/structs.rs:+1:17: +1:18 + _0 = _5; // scope 1 at $DIR/structs.rs:+1:32: +1:33 + StorageDead(_5); // scope 0 at $DIR/structs.rs:+1:34: +1:35 + goto -> bb3; // scope 0 at $DIR/structs.rs:+1:5: +1:46 + } + + bb2: { + _0 = const 0_usize; // scope 0 at $DIR/structs.rs:+1:43: +1:44 + goto -> bb3; // scope 0 at $DIR/structs.rs:+1:5: +1:46 + } + + bb3: { + StorageDead(_2); // scope 0 at $DIR/structs.rs:+2:1: +2:2 + return; // scope 0 at $DIR/structs.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/sroa/structs.escaping.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.escaping.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..3074fcbdf --- /dev/null +++ b/tests/mir-opt/sroa/structs.escaping.ScalarReplacementOfAggregates.diff @@ -0,0 +1,44 @@ +- // MIR for `escaping` before ScalarReplacementOfAggregates ++ // MIR for `escaping` after ScalarReplacementOfAggregates + + fn escaping() -> () { + let mut _0: (); // return place in scope 0 at $DIR/structs.rs:+0:19: +0:19 + let _1: (); // in scope 0 at $DIR/structs.rs:+1:5: +1:42 + let mut _2: *const u32; // in scope 0 at $DIR/structs.rs:+1:7: +1:41 + let _3: &u32; // in scope 0 at $DIR/structs.rs:+1:7: +1:41 + let _4: Escaping; // in scope 0 at $DIR/structs.rs:+1:8: +1:39 + let mut _5: u32; // in scope 0 at $DIR/structs.rs:+1:34: +1:37 + + bb0: { + StorageLive(_1); // scope 0 at $DIR/structs.rs:+1:5: +1:42 + StorageLive(_2); // scope 0 at $DIR/structs.rs:+1:7: +1:41 + StorageLive(_3); // scope 0 at $DIR/structs.rs:+1:7: +1:41 + StorageLive(_4); // scope 0 at $DIR/structs.rs:+1:8: +1:39 + StorageLive(_5); // scope 0 at $DIR/structs.rs:+1:34: +1:37 + _5 = g() -> [return: bb1, unwind unreachable]; // scope 0 at $DIR/structs.rs:+1:34: +1:37 + // mir::Constant + // + span: $DIR/structs.rs:78:34: 78:35 + // + literal: Const { ty: fn() -> u32 {g}, val: Value(<ZST>) } + } + + bb1: { + _4 = Escaping { a: const 1_u32, b: const 2_u32, c: move _5 }; // scope 0 at $DIR/structs.rs:+1:8: +1:39 + StorageDead(_5); // scope 0 at $DIR/structs.rs:+1:38: +1:39 + _3 = &(_4.0: u32); // scope 0 at $DIR/structs.rs:+1:7: +1:41 + _2 = &raw const (*_3); // scope 0 at $DIR/structs.rs:+1:7: +1:41 + _1 = f(move _2) -> [return: bb2, unwind unreachable]; // scope 0 at $DIR/structs.rs:+1:5: +1:42 + // mir::Constant + // + span: $DIR/structs.rs:78:5: 78:6 + // + literal: Const { ty: fn(*const u32) {f}, val: Value(<ZST>) } + } + + bb2: { + StorageDead(_2); // scope 0 at $DIR/structs.rs:+1:41: +1:42 + StorageDead(_4); // scope 0 at $DIR/structs.rs:+1:42: +1:43 + StorageDead(_3); // scope 0 at $DIR/structs.rs:+1:42: +1:43 + StorageDead(_1); // scope 0 at $DIR/structs.rs:+1:42: +1:43 + _0 = const (); // scope 0 at $DIR/structs.rs:+0:19: +2:2 + return; // scope 0 at $DIR/structs.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/sroa/structs.flat.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.flat.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..1aa11d17b --- /dev/null +++ b/tests/mir-opt/sroa/structs.flat.ScalarReplacementOfAggregates.diff @@ -0,0 +1,80 @@ +- // MIR for `flat` before ScalarReplacementOfAggregates ++ // MIR for `flat` after ScalarReplacementOfAggregates + + fn flat() -> () { + let mut _0: (); // return place in scope 0 at $DIR/structs.rs:+0:15: +0:15 + let _1: u8; // in scope 0 at $DIR/structs.rs:+1:15: +1:16 + let _2: (); // in scope 0 at $DIR/structs.rs:+1:18: +1:19 + let _3: &str; // in scope 0 at $DIR/structs.rs:+1:21: +1:22 + let _4: std::option::Option<isize>; // in scope 0 at $DIR/structs.rs:+1:24: +1:25 + let mut _5: Foo; // in scope 0 at $DIR/structs.rs:+1:30: +1:70 + let mut _6: (); // in scope 0 at $DIR/structs.rs:+1:45: +1:47 + let mut _7: std::option::Option<isize>; // in scope 0 at $DIR/structs.rs:+1:60: +1:68 ++ let mut _8: u8; // in scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ let mut _9: (); // in scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ let mut _10: &str; // in scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ let mut _11: std::option::Option<isize>; // in scope 0 at $DIR/structs.rs:+1:30: +1:70 + scope 1 { + debug a => _1; // in scope 1 at $DIR/structs.rs:+1:15: +1:16 + debug b => _2; // in scope 1 at $DIR/structs.rs:+1:18: +1:19 + debug c => _3; // in scope 1 at $DIR/structs.rs:+1:21: +1:22 + debug d => _4; // in scope 1 at $DIR/structs.rs:+1:24: +1:25 + scope 2 { + scope 3 { + scope 4 { + scope 5 { + } + } + } + } + } + + bb0: { +- StorageLive(_5); // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ StorageLive(_8); // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ StorageLive(_9); // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ StorageLive(_10); // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ StorageLive(_11); // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ nop; // scope 0 at $DIR/structs.rs:+1:30: +1:70 + StorageLive(_6); // scope 0 at $DIR/structs.rs:+1:45: +1:47 + _6 = (); // scope 0 at $DIR/structs.rs:+1:45: +1:47 + StorageLive(_7); // scope 0 at $DIR/structs.rs:+1:60: +1:68 + _7 = Option::<isize>::Some(const -4_isize); // scope 0 at $DIR/structs.rs:+1:60: +1:68 +- _5 = Foo { a: const 5_u8, b: move _6, c: const "a", d: move _7 }; // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ _8 = const 5_u8; // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ _9 = move _6; // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ _10 = const "a"; // scope 0 at $DIR/structs.rs:+1:30: +1:70 + // mir::Constant + // + span: $DIR/structs.rs:53:52: 53:55 + // + literal: Const { ty: &str, val: Value(Slice(..)) } ++ _11 = move _7; // scope 0 at $DIR/structs.rs:+1:30: +1:70 ++ nop; // scope 0 at $DIR/structs.rs:+1:30: +1:70 + StorageDead(_7); // scope 0 at $DIR/structs.rs:+1:69: +1:70 + StorageDead(_6); // scope 0 at $DIR/structs.rs:+1:69: +1:70 + StorageLive(_1); // scope 0 at $DIR/structs.rs:+1:15: +1:16 +- _1 = (_5.0: u8); // scope 0 at $DIR/structs.rs:+1:15: +1:16 ++ _1 = _8; // scope 0 at $DIR/structs.rs:+1:15: +1:16 + StorageLive(_2); // scope 0 at $DIR/structs.rs:+1:18: +1:19 +- _2 = (_5.1: ()); // scope 0 at $DIR/structs.rs:+1:18: +1:19 ++ _2 = _9; // scope 0 at $DIR/structs.rs:+1:18: +1:19 + StorageLive(_3); // scope 0 at $DIR/structs.rs:+1:21: +1:22 +- _3 = (_5.2: &str); // scope 0 at $DIR/structs.rs:+1:21: +1:22 ++ _3 = _10; // scope 0 at $DIR/structs.rs:+1:21: +1:22 + StorageLive(_4); // scope 0 at $DIR/structs.rs:+1:24: +1:25 +- _4 = (_5.3: std::option::Option<isize>); // scope 0 at $DIR/structs.rs:+1:24: +1:25 +- StorageDead(_5); // scope 0 at $DIR/structs.rs:+1:70: +1:71 ++ _4 = _11; // scope 0 at $DIR/structs.rs:+1:24: +1:25 ++ StorageDead(_8); // scope 0 at $DIR/structs.rs:+1:70: +1:71 ++ StorageDead(_9); // scope 0 at $DIR/structs.rs:+1:70: +1:71 ++ StorageDead(_10); // scope 0 at $DIR/structs.rs:+1:70: +1:71 ++ StorageDead(_11); // scope 0 at $DIR/structs.rs:+1:70: +1:71 ++ nop; // scope 0 at $DIR/structs.rs:+1:70: +1:71 + _0 = const (); // scope 0 at $DIR/structs.rs:+0:15: +6:2 + StorageDead(_4); // scope 0 at $DIR/structs.rs:+6:1: +6:2 + StorageDead(_3); // scope 0 at $DIR/structs.rs:+6:1: +6:2 + StorageDead(_2); // scope 0 at $DIR/structs.rs:+6:1: +6:2 + StorageDead(_1); // scope 0 at $DIR/structs.rs:+6:1: +6:2 + return; // scope 0 at $DIR/structs.rs:+6:2: +6:2 + } + } + diff --git a/tests/mir-opt/sroa/structs.ref_copies.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.ref_copies.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..7b09ac182 --- /dev/null +++ b/tests/mir-opt/sroa/structs.ref_copies.ScalarReplacementOfAggregates.diff @@ -0,0 +1,56 @@ +- // MIR for `ref_copies` before ScalarReplacementOfAggregates ++ // MIR for `ref_copies` after ScalarReplacementOfAggregates + + fn ref_copies(_1: &Foo) -> () { + debug x => _1; // in scope 0 at $DIR/structs.rs:+0:15: +0:16 + let mut _0: (); // return place in scope 0 at $DIR/structs.rs:+0:24: +0:24 + let _2: Foo; // in scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ let _5: u8; // in scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ let _6: (); // in scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ let _7: &str; // in scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ let _8: std::option::Option<isize>; // in scope 0 at $DIR/structs.rs:+1:9: +1:10 + scope 1 { +- debug y => _2; // in scope 1 at $DIR/structs.rs:+1:9: +1:10 ++ debug y => Foo{ .0 => _5, .1 => _6, .2 => _7, .3 => _8, }; // in scope 1 at $DIR/structs.rs:+1:9: +1:10 + let _3: u8; // in scope 1 at $DIR/structs.rs:+2:9: +2:10 + scope 2 { + debug t => _3; // in scope 2 at $DIR/structs.rs:+2:9: +2:10 + let _4: &str; // in scope 2 at $DIR/structs.rs:+3:9: +3:10 + scope 3 { + debug u => _4; // in scope 3 at $DIR/structs.rs:+3:9: +3:10 + } + } + } + + bb0: { +- StorageLive(_2); // scope 0 at $DIR/structs.rs:+1:9: +1:10 +- _2 = (*_1); // scope 0 at $DIR/structs.rs:+1:13: +1:15 ++ StorageLive(_5); // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ StorageLive(_6); // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ StorageLive(_7); // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ StorageLive(_8); // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ nop; // scope 0 at $DIR/structs.rs:+1:9: +1:10 ++ _5 = ((*_1).0: u8); // scope 0 at $DIR/structs.rs:+1:13: +1:15 ++ _6 = ((*_1).1: ()); // scope 0 at $DIR/structs.rs:+1:13: +1:15 ++ _7 = ((*_1).2: &str); // scope 0 at $DIR/structs.rs:+1:13: +1:15 ++ _8 = ((*_1).3: std::option::Option<isize>); // scope 0 at $DIR/structs.rs:+1:13: +1:15 ++ nop; // scope 0 at $DIR/structs.rs:+1:13: +1:15 + StorageLive(_3); // scope 1 at $DIR/structs.rs:+2:9: +2:10 +- _3 = (_2.0: u8); // scope 1 at $DIR/structs.rs:+2:13: +2:16 ++ _3 = _5; // scope 1 at $DIR/structs.rs:+2:13: +2:16 + StorageLive(_4); // scope 2 at $DIR/structs.rs:+3:9: +3:10 +- _4 = (_2.2: &str); // scope 2 at $DIR/structs.rs:+3:13: +3:16 ++ _4 = _7; // scope 2 at $DIR/structs.rs:+3:13: +3:16 + _0 = const (); // scope 0 at $DIR/structs.rs:+0:24: +4:2 + StorageDead(_4); // scope 2 at $DIR/structs.rs:+4:1: +4:2 + StorageDead(_3); // scope 1 at $DIR/structs.rs:+4:1: +4:2 +- StorageDead(_2); // scope 0 at $DIR/structs.rs:+4:1: +4:2 ++ StorageDead(_5); // scope 0 at $DIR/structs.rs:+4:1: +4:2 ++ StorageDead(_6); // scope 0 at $DIR/structs.rs:+4:1: +4:2 ++ StorageDead(_7); // scope 0 at $DIR/structs.rs:+4:1: +4:2 ++ StorageDead(_8); // scope 0 at $DIR/structs.rs:+4:1: +4:2 ++ nop; // scope 0 at $DIR/structs.rs:+4:1: +4:2 + return; // scope 0 at $DIR/structs.rs:+4:2: +4:2 + } + } + diff --git a/tests/mir-opt/sroa/structs.rs b/tests/mir-opt/sroa/structs.rs new file mode 100644 index 000000000..7946eeaea --- /dev/null +++ b/tests/mir-opt/sroa/structs.rs @@ -0,0 +1,122 @@ +// unit-test: ScalarReplacementOfAggregates +// compile-flags: -Cpanic=abort +// no-prefer-dynamic + +struct Tag(usize); + +#[repr(C)] +struct S(Tag, Tag, Tag); + +impl Drop for Tag { + #[inline(never)] + fn drop(&mut self) {} +} + +pub fn dropping() { + S(Tag(0), Tag(1), Tag(2)).1; +} + +pub fn enums(a: usize) -> usize { + if let Some(a) = Some(a) { a } else { 0 } +} + +pub fn structs(a: f32) -> f32 { + struct U { + _foo: usize, + a: f32, + } + + U { _foo: 0, a }.a +} + +pub fn unions(a: f32) -> u32 { + union Repr { + f: f32, + u: u32, + } + unsafe { Repr { f: a }.u } +} + +#[derive(Copy, Clone)] +struct Foo { + a: u8, + b: (), + c: &'static str, + d: Option<isize>, +} + +fn g() -> u32 { + 3 +} + +pub fn flat() { + let Foo { a, b, c, d } = Foo { a: 5, b: (), c: "a", d: Some(-4) }; + let _ = a; + let _ = b; + let _ = c; + let _ = d; +} + +#[repr(C)] +struct Escaping { + a: u32, + b: u32, + c: u32, +} + +fn f(a: *const u32) { + println!("{}", unsafe { *a.add(2) }); +} + +// `f` uses the `&e.a` to access `e.c`. This is UB according to Miri today; however, +// T-opsem has not finalized that decision and as such rustc should not rely on +// it. If SROA were to rely on it, it would be (almost) correct to turn `e` into +// three distinct locals - one for each field - and pass a reference to only one +// of them to `f`. However, this would lead to a miscompilation because `b` and `c` +// might no longer appear right after `a` in memory. +pub fn escaping() { + f(&Escaping { a: 1, b: 2, c: g() }.a); +} + +fn copies(x: Foo) { + let y = x; + let t = y.a; + let u = y.c; + let z = y; + let a = z.b; +} + +fn ref_copies(x: &Foo) { + let y = *x; + let t = y.a; + let u = y.c; +} + +fn constant() { + const U: (usize, u8) = (5, 9); + let y = U; + let t = y.0; + let u = y.1; +} + +fn main() { + dropping(); + enums(5); + structs(5.); + unions(5.); + flat(); + escaping(); + copies(Foo { a: 5, b: (), c: "a", d: Some(-4) }); + ref_copies(&Foo { a: 5, b: (), c: "a", d: Some(-4) }); + constant(); +} + +// EMIT_MIR structs.dropping.ScalarReplacementOfAggregates.diff +// EMIT_MIR structs.enums.ScalarReplacementOfAggregates.diff +// EMIT_MIR structs.structs.ScalarReplacementOfAggregates.diff +// EMIT_MIR structs.unions.ScalarReplacementOfAggregates.diff +// EMIT_MIR structs.flat.ScalarReplacementOfAggregates.diff +// EMIT_MIR structs.escaping.ScalarReplacementOfAggregates.diff +// EMIT_MIR structs.copies.ScalarReplacementOfAggregates.diff +// EMIT_MIR structs.ref_copies.ScalarReplacementOfAggregates.diff +// EMIT_MIR structs.constant.ScalarReplacementOfAggregates.diff diff --git a/tests/mir-opt/sroa/structs.structs.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.structs.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..c94e4b137 --- /dev/null +++ b/tests/mir-opt/sroa/structs.structs.ScalarReplacementOfAggregates.diff @@ -0,0 +1,33 @@ +- // MIR for `structs` before ScalarReplacementOfAggregates ++ // MIR for `structs` after ScalarReplacementOfAggregates + + fn structs(_1: f32) -> f32 { + debug a => _1; // in scope 0 at $DIR/structs.rs:+0:16: +0:17 + let mut _0: f32; // return place in scope 0 at $DIR/structs.rs:+0:27: +0:30 + let mut _2: structs::U; // in scope 0 at $DIR/structs.rs:+6:5: +6:21 + let mut _3: f32; // in scope 0 at $DIR/structs.rs:+6:18: +6:19 ++ let mut _4: usize; // in scope 0 at $DIR/structs.rs:+6:5: +6:21 ++ let mut _5: f32; // in scope 0 at $DIR/structs.rs:+6:5: +6:21 + + bb0: { +- StorageLive(_2); // scope 0 at $DIR/structs.rs:+6:5: +6:21 ++ StorageLive(_4); // scope 0 at $DIR/structs.rs:+6:5: +6:21 ++ StorageLive(_5); // scope 0 at $DIR/structs.rs:+6:5: +6:21 ++ nop; // scope 0 at $DIR/structs.rs:+6:5: +6:21 + StorageLive(_3); // scope 0 at $DIR/structs.rs:+6:18: +6:19 + _3 = _1; // scope 0 at $DIR/structs.rs:+6:18: +6:19 +- _2 = U { _foo: const 0_usize, a: move _3 }; // scope 0 at $DIR/structs.rs:+6:5: +6:21 ++ _4 = const 0_usize; // scope 0 at $DIR/structs.rs:+6:5: +6:21 ++ _5 = move _3; // scope 0 at $DIR/structs.rs:+6:5: +6:21 ++ nop; // scope 0 at $DIR/structs.rs:+6:5: +6:21 + StorageDead(_3); // scope 0 at $DIR/structs.rs:+6:20: +6:21 +- _0 = (_2.1: f32); // scope 0 at $DIR/structs.rs:+6:5: +6:23 +- StorageDead(_2); // scope 0 at $DIR/structs.rs:+7:1: +7:2 ++ _0 = _5; // scope 0 at $DIR/structs.rs:+6:5: +6:23 ++ StorageDead(_4); // scope 0 at $DIR/structs.rs:+7:1: +7:2 ++ StorageDead(_5); // scope 0 at $DIR/structs.rs:+7:1: +7:2 ++ nop; // scope 0 at $DIR/structs.rs:+7:1: +7:2 + return; // scope 0 at $DIR/structs.rs:+7:2: +7:2 + } + } + diff --git a/tests/mir-opt/sroa/structs.unions.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.unions.ScalarReplacementOfAggregates.diff new file mode 100644 index 000000000..5aa054589 --- /dev/null +++ b/tests/mir-opt/sroa/structs.unions.ScalarReplacementOfAggregates.diff @@ -0,0 +1,23 @@ +- // MIR for `unions` before ScalarReplacementOfAggregates ++ // MIR for `unions` after ScalarReplacementOfAggregates + + fn unions(_1: f32) -> u32 { + debug a => _1; // in scope 0 at $DIR/structs.rs:+0:15: +0:16 + let mut _0: u32; // return place in scope 0 at $DIR/structs.rs:+0:26: +0:29 + let mut _2: unions::Repr; // in scope 0 at $DIR/structs.rs:+5:14: +5:27 + let mut _3: f32; // in scope 0 at $DIR/structs.rs:+5:24: +5:25 + scope 1 { + } + + bb0: { + StorageLive(_2); // scope 1 at $DIR/structs.rs:+5:14: +5:27 + StorageLive(_3); // scope 1 at $DIR/structs.rs:+5:24: +5:25 + _3 = _1; // scope 1 at $DIR/structs.rs:+5:24: +5:25 + _2 = Repr { f: move _3 }; // scope 1 at $DIR/structs.rs:+5:14: +5:27 + StorageDead(_3); // scope 1 at $DIR/structs.rs:+5:26: +5:27 + _0 = (_2.1: u32); // scope 1 at $DIR/structs.rs:+5:14: +5:29 + StorageDead(_2); // scope 0 at $DIR/structs.rs:+6:1: +6:2 + return; // scope 0 at $DIR/structs.rs:+6:2: +6:2 + } + } + |