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Add test for repr(transparent) with scalar
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@ -614,7 +614,7 @@ impl Map {
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}
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}
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/// Register fields of the given (local, projection) place.
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/// Potentially register the (local, projection) place and its fields, recursively.
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///
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/// Invariant: The projection must only contain fields.
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fn register_with_filter_rec<'tcx>(
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@ -626,13 +626,16 @@ impl Map {
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filter: &mut impl FnMut(Ty<'tcx>) -> bool,
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exclude: &FxHashSet<Place<'tcx>>,
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) {
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if exclude.contains(&Place { local, projection: tcx.intern_place_elems(projection) }) {
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let place = Place { local, projection: tcx.intern_place_elems(projection) };
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if exclude.contains(&place) {
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// This will also exclude all projections of the excluded place.
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return;
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}
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// Note: The framework supports only scalars for now.
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if filter(ty) && ty.is_scalar() {
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trace!("registering place: {:?}", place);
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// We know that the projection only contains trackable elements.
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let place = self.make_place(local, projection).unwrap();
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@ -0,0 +1,44 @@
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- // MIR for `main` before DataflowConstProp
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+ // MIR for `main` after DataflowConstProp
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fn main() -> () {
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let mut _0: (); // return place in scope 0 at $DIR/repr_transparent.rs:+0:11: +0:11
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let _1: I32; // in scope 0 at $DIR/repr_transparent.rs:+1:9: +1:10
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let mut _3: i32; // in scope 0 at $DIR/repr_transparent.rs:+2:17: +2:26
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let mut _4: i32; // in scope 0 at $DIR/repr_transparent.rs:+2:17: +2:20
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let mut _5: i32; // in scope 0 at $DIR/repr_transparent.rs:+2:23: +2:26
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scope 1 {
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debug x => _1; // in scope 1 at $DIR/repr_transparent.rs:+1:9: +1:10
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let _2: I32; // in scope 1 at $DIR/repr_transparent.rs:+2:9: +2:10
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scope 2 {
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debug y => _2; // in scope 2 at $DIR/repr_transparent.rs:+2:9: +2:10
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}
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}
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bb0: {
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StorageLive(_1); // scope 0 at $DIR/repr_transparent.rs:+1:9: +1:10
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Deinit(_1); // scope 0 at $DIR/repr_transparent.rs:+1:13: +1:19
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(_1.0: i32) = const 0_i32; // scope 0 at $DIR/repr_transparent.rs:+1:13: +1:19
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StorageLive(_2); // scope 1 at $DIR/repr_transparent.rs:+2:9: +2:10
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StorageLive(_3); // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:26
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StorageLive(_4); // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:20
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- _4 = (_1.0: i32); // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:20
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+ _4 = const 0_i32; // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:20
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StorageLive(_5); // scope 1 at $DIR/repr_transparent.rs:+2:23: +2:26
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- _5 = (_1.0: i32); // scope 1 at $DIR/repr_transparent.rs:+2:23: +2:26
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- _3 = Add(move _4, move _5); // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:26
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+ _5 = const 0_i32; // scope 1 at $DIR/repr_transparent.rs:+2:23: +2:26
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+ _3 = const 0_i32; // scope 1 at $DIR/repr_transparent.rs:+2:17: +2:26
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StorageDead(_5); // scope 1 at $DIR/repr_transparent.rs:+2:25: +2:26
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StorageDead(_4); // scope 1 at $DIR/repr_transparent.rs:+2:25: +2:26
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Deinit(_2); // scope 1 at $DIR/repr_transparent.rs:+2:13: +2:27
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- (_2.0: i32) = move _3; // scope 1 at $DIR/repr_transparent.rs:+2:13: +2:27
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+ (_2.0: i32) = const 0_i32; // scope 1 at $DIR/repr_transparent.rs:+2:13: +2:27
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StorageDead(_3); // scope 1 at $DIR/repr_transparent.rs:+2:26: +2:27
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_0 = const (); // scope 0 at $DIR/repr_transparent.rs:+0:11: +3:2
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StorageDead(_2); // scope 1 at $DIR/repr_transparent.rs:+3:1: +3:2
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StorageDead(_1); // scope 0 at $DIR/repr_transparent.rs:+3:1: +3:2
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return; // scope 0 at $DIR/repr_transparent.rs:+3:2: +3:2
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}
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}
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12
src/test/mir-opt/dataflow-const-prop/repr_transparent.rs
Normal file
12
src/test/mir-opt/dataflow-const-prop/repr_transparent.rs
Normal file
@ -0,0 +1,12 @@
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// unit-test: DataflowConstProp
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// The struct has scalar ABI, but is not a scalar type.
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// Make sure that we handle this correctly.
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#[repr(transparent)]
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struct I32(i32);
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// EMIT_MIR repr_transparent.main.DataflowConstProp.diff
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fn main() {
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let x = I32(0);
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let y = I32(x.0 + x.0);
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}
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