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Added regression test for literal propagation and for scalar pair propagation
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4 files changed

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‎src/test/mir-opt/const_prop/scalar_literal_propagation.rs

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// EMIT_MIR rustc.main.ConstProp.diff
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fn main() {
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let x = 1;
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consume(x);
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}
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#[inline(never)]
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fn consume(_: u32) { }

‎src/test/mir-opt/const_prop/scalar_literal_propagation/rustc.main.ConstProp.diff

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- // MIR for `main` before ConstProp
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+ // MIR for `main` after ConstProp
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fn main() -> () {
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let mut _0: (); // return place in scope 0 at $DIR/scalar_literal_propagation.rs:2:11: 2:11
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let _1: u32; // in scope 0 at $DIR/scalar_literal_propagation.rs:3:9: 3:10
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let _2: (); // in scope 0 at $DIR/scalar_literal_propagation.rs:4:5: 4:15
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let mut _3: u32; // in scope 0 at $DIR/scalar_literal_propagation.rs:4:13: 4:14
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scope 1 {
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debug x => _1; // in scope 1 at $DIR/scalar_literal_propagation.rs:3:9: 3:10
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}
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bb0: {
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StorageLive(_1); // scope 0 at $DIR/scalar_literal_propagation.rs:3:9: 3:10
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_1 = const 1u32; // scope 0 at $DIR/scalar_literal_propagation.rs:3:13: 3:14
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// ty::Const
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// + ty: u32
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// + val: Value(Scalar(0x00000001))
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// mir::Constant
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// + span: $DIR/scalar_literal_propagation.rs:3:13: 3:14
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// + literal: Const { ty: u32, val: Value(Scalar(0x00000001)) }
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StorageLive(_2); // scope 1 at $DIR/scalar_literal_propagation.rs:4:5: 4:15
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StorageLive(_3); // scope 1 at $DIR/scalar_literal_propagation.rs:4:13: 4:14
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_3 = _1; // scope 1 at $DIR/scalar_literal_propagation.rs:4:13: 4:14
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_2 = const consume(move _3) -> bb1; // scope 1 at $DIR/scalar_literal_propagation.rs:4:5: 4:15
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// ty::Const
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// + ty: fn(u32) {consume}
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// + val: Value(Scalar(<ZST>))
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// mir::Constant
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// + span: $DIR/scalar_literal_propagation.rs:4:5: 4:12
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// + literal: Const { ty: fn(u32) {consume}, val: Value(Scalar(<ZST>)) }
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}
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bb1: {
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StorageDead(_3); // scope 1 at $DIR/scalar_literal_propagation.rs:4:14: 4:15
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StorageDead(_2); // scope 1 at $DIR/scalar_literal_propagation.rs:4:15: 4:16
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_0 = const (); // scope 0 at $DIR/scalar_literal_propagation.rs:2:11: 5:2
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// ty::Const
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// + ty: ()
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// + val: Value(Scalar(<ZST>))
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// mir::Constant
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// + span: $DIR/scalar_literal_propagation.rs:2:11: 5:2
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// + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
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StorageDead(_1); // scope 0 at $DIR/scalar_literal_propagation.rs:5:1: 5:2
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return; // scope 0 at $DIR/scalar_literal_propagation.rs:5:2: 5:2
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}
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}
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‎src/test/mir-opt/const_prop/tuple_literal_propagation.rs

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// EMIT_MIR rustc.main.ConstProp.diff
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fn main() {
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let x = (1, 2);
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consume(x);
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}
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#[inline(never)]
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fn consume(_: (u32, u32)) { }

‎src/test/mir-opt/const_prop/tuple_literal_propagation/rustc.main.ConstProp.diff

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- // MIR for `main` before ConstProp
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+ // MIR for `main` after ConstProp
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fn main() -> () {
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let mut _0: (); // return place in scope 0 at $DIR/tuple_literal_propagation.rs:2:11: 2:11
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let _1: (u32, u32); // in scope 0 at $DIR/tuple_literal_propagation.rs:3:9: 3:10
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let _2: (); // in scope 0 at $DIR/tuple_literal_propagation.rs:5:5: 5:15
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let mut _3: (u32, u32); // in scope 0 at $DIR/tuple_literal_propagation.rs:5:13: 5:14
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scope 1 {
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debug x => _1; // in scope 1 at $DIR/tuple_literal_propagation.rs:3:9: 3:10
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}
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bb0: {
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StorageLive(_1); // scope 0 at $DIR/tuple_literal_propagation.rs:3:9: 3:10
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_1 = (const 1u32, const 2u32); // scope 0 at $DIR/tuple_literal_propagation.rs:3:13: 3:19
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// ty::Const
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// + ty: u32
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// + val: Value(Scalar(0x00000001))
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// mir::Constant
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- // + span: $DIR/tuple_literal_propagation.rs:3:14: 3:15
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+ // + span: $DIR/tuple_literal_propagation.rs:3:13: 3:19
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// + literal: Const { ty: u32, val: Value(Scalar(0x00000001)) }
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// ty::Const
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// + ty: u32
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// + val: Value(Scalar(0x00000002))
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// mir::Constant
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- // + span: $DIR/tuple_literal_propagation.rs:3:17: 3:18
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+ // + span: $DIR/tuple_literal_propagation.rs:3:13: 3:19
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// + literal: Const { ty: u32, val: Value(Scalar(0x00000002)) }
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StorageLive(_2); // scope 1 at $DIR/tuple_literal_propagation.rs:5:5: 5:15
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StorageLive(_3); // scope 1 at $DIR/tuple_literal_propagation.rs:5:13: 5:14
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_3 = _1; // scope 1 at $DIR/tuple_literal_propagation.rs:5:13: 5:14
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_2 = const consume(move _3) -> bb1; // scope 1 at $DIR/tuple_literal_propagation.rs:5:5: 5:15
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// ty::Const
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// + ty: fn((u32, u32)) {consume}
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// + val: Value(Scalar(<ZST>))
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// mir::Constant
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// + span: $DIR/tuple_literal_propagation.rs:5:5: 5:12
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// + literal: Const { ty: fn((u32, u32)) {consume}, val: Value(Scalar(<ZST>)) }
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}
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bb1: {
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StorageDead(_3); // scope 1 at $DIR/tuple_literal_propagation.rs:5:14: 5:15
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StorageDead(_2); // scope 1 at $DIR/tuple_literal_propagation.rs:5:15: 5:16
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_0 = const (); // scope 0 at $DIR/tuple_literal_propagation.rs:2:11: 6:2
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// ty::Const
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// + ty: ()
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// + val: Value(Scalar(<ZST>))
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// mir::Constant
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// + span: $DIR/tuple_literal_propagation.rs:2:11: 6:2
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// + literal: Const { ty: (), val: Value(Scalar(<ZST>)) }
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StorageDead(_1); // scope 0 at $DIR/tuple_literal_propagation.rs:6:1: 6:2
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return; // scope 0 at $DIR/tuple_literal_propagation.rs:6:2: 6:2
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}
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}
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