Make the aggregate-then-transmute handling more general
This commit is contained in:
Scott McMurray
parent
293f8e8941
commit
b421a56364
4 changed files with 516 additions and 310 deletions
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@ -1370,12 +1370,14 @@ impl<'body, 'tcx> VnState<'body, 'tcx> {
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loop {
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loop {
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let mut was_updated_this_iteration = false;
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let mut was_updated_this_iteration = false;
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// Transmuting `*const T` <=> `*mut T` is just a pointer cast,
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// Transmuting between raw pointers is just a pointer cast so long as
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// which we might be able to merge with other ones later.
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// they have the same metadata type (like `*const i32` <=> `*mut u64`
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// or `*mut [i32]` <=> `*const [u64]`), including the common special
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// case of `*const T` <=> `*mut T`.
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if let Transmute = kind
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if let Transmute = kind
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&& let ty::RawPtr(from_pointee, _) = from.kind()
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&& from.is_unsafe_ptr()
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&& let ty::RawPtr(to_pointee, _) = to.kind()
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&& to.is_unsafe_ptr()
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&& from_pointee == to_pointee
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&& self.pointers_have_same_metadata(from, to)
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{
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{
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*kind = PtrToPtr;
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*kind = PtrToPtr;
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was_updated_this_iteration = true;
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was_updated_this_iteration = true;
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@ -1400,15 +1402,9 @@ impl<'body, 'tcx> VnState<'body, 'tcx> {
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// Aggregate-then-Transmute can just transmute the original field value,
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// Aggregate-then-Transmute can just transmute the original field value,
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// so long as the bytes of a value from only from a single field.
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// so long as the bytes of a value from only from a single field.
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if let Transmute = kind
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if let Transmute = kind
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&& let Value::Aggregate(
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&& let Value::Aggregate(_aggregate_ty, variant_idx, field_values) = self.get(value)
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AggregateTy::Def(aggregate_did, aggregate_args),
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variant_idx,
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field_values,
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) = self.get(value)
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&& let aggregate_ty =
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self.tcx.type_of(aggregate_did).instantiate(self.tcx, aggregate_args)
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&& let Some((field_idx, field_ty)) =
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&& let Some((field_idx, field_ty)) =
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self.value_is_all_in_one_field(aggregate_ty, *variant_idx)
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self.value_is_all_in_one_field(from, *variant_idx)
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{
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{
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from = field_ty;
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from = field_ty;
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value = field_values[field_idx.as_usize()];
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value = field_values[field_idx.as_usize()];
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@ -1,61 +1,87 @@
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- // MIR for `aggregate_struct_then_transmute` before GVN
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- // MIR for `aggregate_struct_then_transmute` before GVN
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+ // MIR for `aggregate_struct_then_transmute` after GVN
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+ // MIR for `aggregate_struct_then_transmute` after GVN
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fn aggregate_struct_then_transmute(_1: u16) -> () {
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fn aggregate_struct_then_transmute(_1: u16, _2: *const u8) -> () {
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debug id => _1;
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debug id => _1;
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debug thin => _2;
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let mut _0: ();
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let mut _0: ();
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let _2: MyId;
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let _3: MyId;
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let mut _3: u16;
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let mut _4: u16;
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let _4: ();
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let _5: ();
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let mut _5: u16;
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let mut _6: u16;
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let mut _6: MyId;
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let mut _7: MyId;
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let mut _8: u16;
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let mut _9: u16;
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let mut _9: std::marker::PhantomData<std::string::String>;
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let mut _10: std::marker::PhantomData<std::string::String>;
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let _10: ();
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let _11: ();
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let mut _11: u16;
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let mut _12: u16;
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let mut _12: TypedId<std::string::String>;
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let mut _13: TypedId<std::string::String>;
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let mut _14: u16;
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let mut _15: u16;
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let _15: ();
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let _16: ();
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let mut _16: u16;
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let mut _17: u16;
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let mut _17: std::result::Result<Never, u16>;
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let mut _18: std::result::Result<Never, u16>;
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let mut _19: u16;
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let mut _20: u16;
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let _20: ();
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let _21: ();
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let mut _21: u32;
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let mut _22: u32;
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let mut _22: std::option::Option<u16>;
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let mut _23: std::option::Option<u16>;
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let mut _24: u16;
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let mut _25: u16;
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let _25: ();
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let _26: ();
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let mut _26: i16;
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let mut _27: i16;
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let mut _27: MyId;
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let mut _28: MyId;
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let mut _29: u16;
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let mut _30: u16;
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let mut _30: u16;
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let _31: ();
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let mut _31: u16;
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let mut _32: u32;
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let _32: ();
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let mut _33: aggregate_struct_then_transmute::Pair;
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let mut _33: u32;
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let mut _35: u16;
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let mut _34: aggregate_struct_then_transmute::Pair;
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let mut _36: u16;
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let mut _36: u16;
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let _37: ();
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let mut _37: u16;
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let mut _38: u16;
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let _38: ();
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let mut _39: aggregate_struct_then_transmute::Pair;
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let mut _39: u16;
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let mut _40: aggregate_struct_then_transmute::Pair;
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let mut _42: u16;
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let _43: ();
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let mut _44: u16;
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let mut _45: (u16,);
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let mut _47: u16;
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let _48: ();
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let mut _49: u16;
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let mut _50: [u16; 1];
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let mut _52: *const u8;
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let mut _53: ();
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let _54: ();
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let mut _55: *const u8;
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let mut _56: *const i32;
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scope 1 {
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scope 1 {
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debug a => _2;
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debug a => _3;
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let _7: TypedId<std::string::String>;
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let _8: TypedId<std::string::String>;
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scope 2 {
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scope 2 {
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debug b => _7;
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debug b => _8;
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let _13: std::result::Result<Never, u16>;
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let _14: std::result::Result<Never, u16>;
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scope 3 {
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scope 3 {
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debug c => _13;
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debug c => _14;
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let _18: std::option::Option<u16>;
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let _19: std::option::Option<u16>;
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scope 4 {
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scope 4 {
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debug d => _18;
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debug d => _19;
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let _23: MyId;
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let _24: MyId;
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scope 5 {
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scope 5 {
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debug e => _23;
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debug e => _24;
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let _28: aggregate_struct_then_transmute::Pair;
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let _29: aggregate_struct_then_transmute::Pair;
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scope 6 {
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scope 6 {
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debug f => _28;
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debug f => _29;
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let _34: aggregate_struct_then_transmute::Pair;
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let _35: aggregate_struct_then_transmute::Pair;
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scope 7 {
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scope 7 {
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debug g => _34;
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debug g => _35;
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let _41: (u16,);
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scope 8 {
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debug h => _41;
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let _46: [u16; 1];
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scope 9 {
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debug i => _46;
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let _51: *const i32;
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scope 10 {
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debug j => _51;
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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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}
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}
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}
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@ -65,172 +91,245 @@
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}
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}
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bb0: {
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bb0: {
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- StorageLive(_2);
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- StorageLive(_3);
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+ nop;
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+ nop;
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StorageLive(_3);
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_3 = copy _1;
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- _2 = MyId(move _3);
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+ _2 = MyId(copy _1);
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StorageDead(_3);
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StorageLive(_4);
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StorageLive(_4);
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_4 = copy _1;
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- _3 = MyId(move _4);
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+ _3 = MyId(copy _1);
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StorageDead(_4);
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StorageLive(_5);
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StorageLive(_5);
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StorageLive(_6);
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StorageLive(_6);
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- _6 = move _2;
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StorageLive(_7);
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- _5 = move _6 as u16 (Transmute);
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- _7 = move _3;
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+ _6 = copy _2;
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- _6 = move _7 as u16 (Transmute);
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+ _5 = copy _1;
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+ _7 = copy _3;
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StorageDead(_6);
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+ _6 = copy _1;
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- _4 = opaque::<u16>(move _5) -> [return: bb1, unwind unreachable];
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StorageDead(_7);
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+ _4 = opaque::<u16>(copy _1) -> [return: bb1, unwind unreachable];
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- _5 = opaque::<u16>(move _6) -> [return: bb1, unwind unreachable];
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+ _5 = opaque::<u16>(copy _1) -> [return: bb1, unwind unreachable];
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}
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}
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bb1: {
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bb1: {
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StorageDead(_6);
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StorageDead(_5);
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StorageDead(_5);
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StorageDead(_4);
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- StorageLive(_8);
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- StorageLive(_7);
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+ nop;
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+ nop;
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StorageLive(_8);
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_8 = copy _1;
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StorageLive(_9);
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StorageLive(_9);
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- _9 = PhantomData::<String>;
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_9 = copy _1;
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- _7 = TypedId::<String>(move _8, move _9);
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+ _9 = const PhantomData::<String>;
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+ _7 = TypedId::<String>(copy _1, const PhantomData::<String>);
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StorageDead(_9);
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StorageDead(_8);
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StorageLive(_10);
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StorageLive(_10);
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- _10 = PhantomData::<String>;
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- _8 = TypedId::<String>(move _9, move _10);
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+ _10 = const PhantomData::<String>;
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+ _8 = TypedId::<String>(copy _1, const PhantomData::<String>);
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StorageDead(_10);
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StorageDead(_9);
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StorageLive(_11);
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StorageLive(_11);
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StorageLive(_12);
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StorageLive(_12);
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- _12 = move _7;
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StorageLive(_13);
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- _11 = move _12 as u16 (Transmute);
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- _13 = move _8;
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+ _12 = copy _7;
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- _12 = move _13 as u16 (Transmute);
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+ _11 = copy _1;
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+ _13 = copy _8;
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StorageDead(_12);
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+ _12 = copy _1;
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- _10 = opaque::<u16>(move _11) -> [return: bb2, unwind unreachable];
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StorageDead(_13);
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+ _10 = opaque::<u16>(copy _1) -> [return: bb2, unwind unreachable];
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- _11 = opaque::<u16>(move _12) -> [return: bb2, unwind unreachable];
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+ _11 = opaque::<u16>(copy _1) -> [return: bb2, unwind unreachable];
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}
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}
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bb2: {
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bb2: {
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StorageDead(_12);
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StorageDead(_11);
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StorageDead(_11);
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StorageDead(_10);
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- StorageLive(_14);
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- StorageLive(_13);
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+ nop;
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+ nop;
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StorageLive(_14);
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_14 = copy _1;
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- _13 = Result::<Never, u16>::Err(move _14);
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+ _13 = Result::<Never, u16>::Err(copy _1);
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StorageDead(_14);
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StorageLive(_15);
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StorageLive(_15);
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_15 = copy _1;
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- _14 = Result::<Never, u16>::Err(move _15);
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+ _14 = Result::<Never, u16>::Err(copy _1);
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StorageDead(_15);
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StorageLive(_16);
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StorageLive(_16);
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StorageLive(_17);
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StorageLive(_17);
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- _17 = move _13;
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StorageLive(_18);
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- _16 = move _17 as u16 (Transmute);
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- _18 = move _14;
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+ _17 = copy _13;
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- _17 = move _18 as u16 (Transmute);
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+ _16 = copy _1;
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+ _18 = copy _14;
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StorageDead(_17);
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+ _17 = copy _1;
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- _15 = opaque::<u16>(move _16) -> [return: bb3, unwind unreachable];
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StorageDead(_18);
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+ _15 = opaque::<u16>(copy _1) -> [return: bb3, unwind unreachable];
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- _16 = opaque::<u16>(move _17) -> [return: bb3, unwind unreachable];
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+ _16 = opaque::<u16>(copy _1) -> [return: bb3, unwind unreachable];
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}
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}
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bb3: {
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bb3: {
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StorageDead(_17);
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StorageDead(_16);
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StorageDead(_16);
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StorageDead(_15);
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- StorageLive(_19);
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- StorageLive(_18);
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+ nop;
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+ nop;
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StorageLive(_19);
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_19 = copy _1;
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- _18 = Option::<u16>::Some(move _19);
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+ _18 = Option::<u16>::Some(copy _1);
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StorageDead(_19);
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StorageLive(_20);
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StorageLive(_20);
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_20 = copy _1;
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- _19 = Option::<u16>::Some(move _20);
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+ _19 = Option::<u16>::Some(copy _1);
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StorageDead(_20);
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StorageLive(_21);
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StorageLive(_21);
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StorageLive(_22);
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StorageLive(_22);
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_22 = copy _18;
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StorageLive(_23);
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- _21 = move _22 as u32 (Transmute);
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_23 = copy _19;
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+ _21 = copy _18 as u32 (Transmute);
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- _22 = move _23 as u32 (Transmute);
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StorageDead(_22);
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+ _22 = copy _19 as u32 (Transmute);
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_20 = opaque::<u32>(move _21) -> [return: bb4, unwind unreachable];
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StorageDead(_23);
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_21 = opaque::<u32>(move _22) -> [return: bb4, unwind unreachable];
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}
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}
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bb4: {
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bb4: {
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StorageDead(_22);
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StorageDead(_21);
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StorageDead(_21);
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StorageDead(_20);
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StorageLive(_23);
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StorageLive(_24);
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StorageLive(_24);
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_24 = copy _1;
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- _23 = MyId(move _24);
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+ _23 = copy _2;
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StorageDead(_24);
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StorageLive(_25);
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StorageLive(_25);
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_25 = copy _1;
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- _24 = MyId(move _25);
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+ _24 = copy _3;
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StorageDead(_25);
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StorageLive(_26);
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StorageLive(_26);
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StorageLive(_27);
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StorageLive(_27);
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- _27 = move _23;
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StorageLive(_28);
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- _26 = move _27 as i16 (Transmute);
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- _28 = move _24;
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+ _27 = copy _2;
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- _27 = move _28 as i16 (Transmute);
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+ _26 = copy _1 as i16 (Transmute);
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+ _28 = copy _3;
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StorageDead(_27);
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+ _27 = copy _1 as i16 (Transmute);
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_25 = opaque::<i16>(move _26) -> [return: bb5, unwind unreachable];
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StorageDead(_28);
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_26 = opaque::<i16>(move _27) -> [return: bb5, unwind unreachable];
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}
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}
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bb5: {
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bb5: {
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StorageDead(_27);
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StorageDead(_26);
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StorageDead(_26);
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StorageDead(_25);
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- StorageLive(_29);
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- StorageLive(_28);
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+ nop;
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+ nop;
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StorageLive(_29);
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_29 = copy _1;
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StorageLive(_30);
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StorageLive(_30);
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_30 = copy _1;
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_30 = copy _1;
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- _28 = Pair(move _29, move _30);
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+ _28 = Pair(copy _1, copy _1);
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StorageDead(_30);
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StorageDead(_29);
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StorageLive(_31);
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StorageLive(_31);
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_31 = copy _1;
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- _29 = Pair(move _30, move _31);
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+ _29 = Pair(copy _1, copy _1);
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StorageDead(_31);
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StorageDead(_30);
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StorageLive(_32);
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StorageLive(_32);
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StorageLive(_33);
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StorageLive(_33);
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- _33 = move _28;
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StorageLive(_34);
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- _32 = move _33 as u32 (Transmute);
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- _34 = move _29;
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+ _33 = copy _28;
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- _33 = move _34 as u32 (Transmute);
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+ _32 = copy _28 as u32 (Transmute);
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+ _34 = copy _29;
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StorageDead(_33);
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+ _33 = copy _29 as u32 (Transmute);
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_31 = opaque::<u32>(move _32) -> [return: bb6, unwind unreachable];
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StorageDead(_34);
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_32 = opaque::<u32>(move _33) -> [return: bb6, unwind unreachable];
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||||||
}
|
}
|
||||||
|
|
||||||
bb6: {
|
bb6: {
|
||||||
|
StorageDead(_33);
|
||||||
StorageDead(_32);
|
StorageDead(_32);
|
||||||
StorageDead(_31);
|
|
||||||
StorageLive(_34);
|
|
||||||
StorageLive(_35);
|
StorageLive(_35);
|
||||||
_35 = copy _1;
|
|
||||||
StorageLive(_36);
|
StorageLive(_36);
|
||||||
_36 = copy _1;
|
_36 = copy _1;
|
||||||
- _34 = Pair(move _35, move _36);
|
|
||||||
+ _34 = copy _28;
|
|
||||||
StorageDead(_36);
|
|
||||||
StorageDead(_35);
|
|
||||||
StorageLive(_37);
|
StorageLive(_37);
|
||||||
|
_37 = copy _1;
|
||||||
|
- _35 = Pair(move _36, move _37);
|
||||||
|
+ _35 = copy _29;
|
||||||
|
StorageDead(_37);
|
||||||
|
StorageDead(_36);
|
||||||
StorageLive(_38);
|
StorageLive(_38);
|
||||||
StorageLive(_39);
|
StorageLive(_39);
|
||||||
- _39 = move _34;
|
StorageLive(_40);
|
||||||
- _38 = move _39 as u16 (Transmute);
|
- _40 = move _35;
|
||||||
+ _39 = copy _28;
|
- _39 = move _40 as u16 (Transmute);
|
||||||
+ _38 = copy _28 as u16 (Transmute);
|
+ _40 = copy _29;
|
||||||
StorageDead(_39);
|
+ _39 = copy _29 as u16 (Transmute);
|
||||||
_37 = opaque::<u16>(move _38) -> [return: bb7, unwind unreachable];
|
StorageDead(_40);
|
||||||
|
_38 = opaque::<u16>(move _39) -> [return: bb7, unwind unreachable];
|
||||||
}
|
}
|
||||||
|
|
||||||
bb7: {
|
bb7: {
|
||||||
|
StorageDead(_39);
|
||||||
StorageDead(_38);
|
StorageDead(_38);
|
||||||
StorageDead(_37);
|
- StorageLive(_41);
|
||||||
_0 = const ();
|
|
||||||
StorageDead(_34);
|
|
||||||
- StorageDead(_28);
|
|
||||||
+ nop;
|
+ nop;
|
||||||
StorageDead(_23);
|
StorageLive(_42);
|
||||||
- StorageDead(_18);
|
_42 = copy _1;
|
||||||
- StorageDead(_13);
|
- _41 = (move _42,);
|
||||||
- StorageDead(_7);
|
+ _41 = (copy _1,);
|
||||||
- StorageDead(_2);
|
StorageDead(_42);
|
||||||
|
StorageLive(_43);
|
||||||
|
StorageLive(_44);
|
||||||
|
StorageLive(_45);
|
||||||
|
_45 = copy _41;
|
||||||
|
- _44 = move _45 as u16 (Transmute);
|
||||||
|
+ _44 = copy _1;
|
||||||
|
StorageDead(_45);
|
||||||
|
- _43 = opaque::<u16>(move _44) -> [return: bb8, unwind unreachable];
|
||||||
|
+ _43 = opaque::<u16>(copy _1) -> [return: bb8, unwind unreachable];
|
||||||
|
}
|
||||||
|
|
||||||
|
bb8: {
|
||||||
|
StorageDead(_44);
|
||||||
|
StorageDead(_43);
|
||||||
|
- StorageLive(_46);
|
||||||
|
+ nop;
|
||||||
|
StorageLive(_47);
|
||||||
|
_47 = copy _1;
|
||||||
|
- _46 = [move _47];
|
||||||
|
+ _46 = [copy _1];
|
||||||
|
StorageDead(_47);
|
||||||
|
StorageLive(_48);
|
||||||
|
StorageLive(_49);
|
||||||
|
StorageLive(_50);
|
||||||
|
_50 = copy _46;
|
||||||
|
- _49 = move _50 as u16 (Transmute);
|
||||||
|
+ _49 = copy _1;
|
||||||
|
StorageDead(_50);
|
||||||
|
- _48 = opaque::<u16>(move _49) -> [return: bb9, unwind unreachable];
|
||||||
|
+ _48 = opaque::<u16>(copy _1) -> [return: bb9, unwind unreachable];
|
||||||
|
}
|
||||||
|
|
||||||
|
bb9: {
|
||||||
|
StorageDead(_49);
|
||||||
|
StorageDead(_48);
|
||||||
|
- StorageLive(_51);
|
||||||
|
+ nop;
|
||||||
|
StorageLive(_52);
|
||||||
|
_52 = copy _2;
|
||||||
|
StorageLive(_53);
|
||||||
|
- _53 = ();
|
||||||
|
- _51 = *const i32 from (move _52, move _53);
|
||||||
|
+ _53 = const ();
|
||||||
|
+ _51 = *const i32 from (copy _2, const ());
|
||||||
|
StorageDead(_53);
|
||||||
|
StorageDead(_52);
|
||||||
|
StorageLive(_54);
|
||||||
|
StorageLive(_55);
|
||||||
|
StorageLive(_56);
|
||||||
|
_56 = copy _51;
|
||||||
|
- _55 = move _56 as *const u8 (Transmute);
|
||||||
|
+ _55 = copy _2;
|
||||||
|
StorageDead(_56);
|
||||||
|
- _54 = opaque::<*const u8>(move _55) -> [return: bb10, unwind unreachable];
|
||||||
|
+ _54 = opaque::<*const u8>(copy _2) -> [return: bb10, unwind unreachable];
|
||||||
|
}
|
||||||
|
|
||||||
|
bb10: {
|
||||||
|
StorageDead(_55);
|
||||||
|
StorageDead(_54);
|
||||||
|
_0 = const ();
|
||||||
|
- StorageDead(_51);
|
||||||
|
- StorageDead(_46);
|
||||||
|
- StorageDead(_41);
|
||||||
|
+ nop;
|
||||||
|
+ nop;
|
||||||
|
+ nop;
|
||||||
|
StorageDead(_35);
|
||||||
|
- StorageDead(_29);
|
||||||
|
+ nop;
|
||||||
|
StorageDead(_24);
|
||||||
|
- StorageDead(_19);
|
||||||
|
- StorageDead(_14);
|
||||||
|
- StorageDead(_8);
|
||||||
|
- StorageDead(_3);
|
||||||
+ nop;
|
+ nop;
|
||||||
+ nop;
|
+ nop;
|
||||||
+ nop;
|
+ nop;
|
||||||
|
|
|
||||||
|
|
@ -1,61 +1,87 @@
|
||||||
- // MIR for `aggregate_struct_then_transmute` before GVN
|
- // MIR for `aggregate_struct_then_transmute` before GVN
|
||||||
+ // MIR for `aggregate_struct_then_transmute` after GVN
|
+ // MIR for `aggregate_struct_then_transmute` after GVN
|
||||||
|
|
||||||
fn aggregate_struct_then_transmute(_1: u16) -> () {
|
fn aggregate_struct_then_transmute(_1: u16, _2: *const u8) -> () {
|
||||||
debug id => _1;
|
debug id => _1;
|
||||||
|
debug thin => _2;
|
||||||
let mut _0: ();
|
let mut _0: ();
|
||||||
let _2: MyId;
|
let _3: MyId;
|
||||||
let mut _3: u16;
|
let mut _4: u16;
|
||||||
let _4: ();
|
let _5: ();
|
||||||
let mut _5: u16;
|
let mut _6: u16;
|
||||||
let mut _6: MyId;
|
let mut _7: MyId;
|
||||||
let mut _8: u16;
|
let mut _9: u16;
|
||||||
let mut _9: std::marker::PhantomData<std::string::String>;
|
let mut _10: std::marker::PhantomData<std::string::String>;
|
||||||
let _10: ();
|
let _11: ();
|
||||||
let mut _11: u16;
|
let mut _12: u16;
|
||||||
let mut _12: TypedId<std::string::String>;
|
let mut _13: TypedId<std::string::String>;
|
||||||
let mut _14: u16;
|
let mut _15: u16;
|
||||||
let _15: ();
|
let _16: ();
|
||||||
let mut _16: u16;
|
let mut _17: u16;
|
||||||
let mut _17: std::result::Result<Never, u16>;
|
let mut _18: std::result::Result<Never, u16>;
|
||||||
let mut _19: u16;
|
let mut _20: u16;
|
||||||
let _20: ();
|
let _21: ();
|
||||||
let mut _21: u32;
|
let mut _22: u32;
|
||||||
let mut _22: std::option::Option<u16>;
|
let mut _23: std::option::Option<u16>;
|
||||||
let mut _24: u16;
|
let mut _25: u16;
|
||||||
let _25: ();
|
let _26: ();
|
||||||
let mut _26: i16;
|
let mut _27: i16;
|
||||||
let mut _27: MyId;
|
let mut _28: MyId;
|
||||||
let mut _29: u16;
|
|
||||||
let mut _30: u16;
|
let mut _30: u16;
|
||||||
let _31: ();
|
let mut _31: u16;
|
||||||
let mut _32: u32;
|
let _32: ();
|
||||||
let mut _33: aggregate_struct_then_transmute::Pair;
|
let mut _33: u32;
|
||||||
let mut _35: u16;
|
let mut _34: aggregate_struct_then_transmute::Pair;
|
||||||
let mut _36: u16;
|
let mut _36: u16;
|
||||||
let _37: ();
|
let mut _37: u16;
|
||||||
let mut _38: u16;
|
let _38: ();
|
||||||
let mut _39: aggregate_struct_then_transmute::Pair;
|
let mut _39: u16;
|
||||||
|
let mut _40: aggregate_struct_then_transmute::Pair;
|
||||||
|
let mut _42: u16;
|
||||||
|
let _43: ();
|
||||||
|
let mut _44: u16;
|
||||||
|
let mut _45: (u16,);
|
||||||
|
let mut _47: u16;
|
||||||
|
let _48: ();
|
||||||
|
let mut _49: u16;
|
||||||
|
let mut _50: [u16; 1];
|
||||||
|
let mut _52: *const u8;
|
||||||
|
let mut _53: ();
|
||||||
|
let _54: ();
|
||||||
|
let mut _55: *const u8;
|
||||||
|
let mut _56: *const i32;
|
||||||
scope 1 {
|
scope 1 {
|
||||||
debug a => _2;
|
debug a => _3;
|
||||||
let _7: TypedId<std::string::String>;
|
let _8: TypedId<std::string::String>;
|
||||||
scope 2 {
|
scope 2 {
|
||||||
debug b => _7;
|
debug b => _8;
|
||||||
let _13: std::result::Result<Never, u16>;
|
let _14: std::result::Result<Never, u16>;
|
||||||
scope 3 {
|
scope 3 {
|
||||||
debug c => _13;
|
debug c => _14;
|
||||||
let _18: std::option::Option<u16>;
|
let _19: std::option::Option<u16>;
|
||||||
scope 4 {
|
scope 4 {
|
||||||
debug d => _18;
|
debug d => _19;
|
||||||
let _23: MyId;
|
let _24: MyId;
|
||||||
scope 5 {
|
scope 5 {
|
||||||
debug e => _23;
|
debug e => _24;
|
||||||
let _28: aggregate_struct_then_transmute::Pair;
|
let _29: aggregate_struct_then_transmute::Pair;
|
||||||
scope 6 {
|
scope 6 {
|
||||||
debug f => _28;
|
debug f => _29;
|
||||||
let _34: aggregate_struct_then_transmute::Pair;
|
let _35: aggregate_struct_then_transmute::Pair;
|
||||||
scope 7 {
|
scope 7 {
|
||||||
debug g => _34;
|
debug g => _35;
|
||||||
|
let _41: (u16,);
|
||||||
|
scope 8 {
|
||||||
|
debug h => _41;
|
||||||
|
let _46: [u16; 1];
|
||||||
|
scope 9 {
|
||||||
|
debug i => _46;
|
||||||
|
let _51: *const i32;
|
||||||
|
scope 10 {
|
||||||
|
debug j => _51;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
@ -65,172 +91,245 @@
|
||||||
}
|
}
|
||||||
|
|
||||||
bb0: {
|
bb0: {
|
||||||
- StorageLive(_2);
|
- StorageLive(_3);
|
||||||
+ nop;
|
+ nop;
|
||||||
StorageLive(_3);
|
|
||||||
_3 = copy _1;
|
|
||||||
- _2 = MyId(move _3);
|
|
||||||
+ _2 = MyId(copy _1);
|
|
||||||
StorageDead(_3);
|
|
||||||
StorageLive(_4);
|
StorageLive(_4);
|
||||||
|
_4 = copy _1;
|
||||||
|
- _3 = MyId(move _4);
|
||||||
|
+ _3 = MyId(copy _1);
|
||||||
|
StorageDead(_4);
|
||||||
StorageLive(_5);
|
StorageLive(_5);
|
||||||
StorageLive(_6);
|
StorageLive(_6);
|
||||||
- _6 = move _2;
|
StorageLive(_7);
|
||||||
- _5 = move _6 as u16 (Transmute);
|
- _7 = move _3;
|
||||||
+ _6 = copy _2;
|
- _6 = move _7 as u16 (Transmute);
|
||||||
+ _5 = copy _1;
|
+ _7 = copy _3;
|
||||||
StorageDead(_6);
|
+ _6 = copy _1;
|
||||||
- _4 = opaque::<u16>(move _5) -> [return: bb1, unwind continue];
|
StorageDead(_7);
|
||||||
+ _4 = opaque::<u16>(copy _1) -> [return: bb1, unwind continue];
|
- _5 = opaque::<u16>(move _6) -> [return: bb1, unwind continue];
|
||||||
|
+ _5 = opaque::<u16>(copy _1) -> [return: bb1, unwind continue];
|
||||||
}
|
}
|
||||||
|
|
||||||
bb1: {
|
bb1: {
|
||||||
|
StorageDead(_6);
|
||||||
StorageDead(_5);
|
StorageDead(_5);
|
||||||
StorageDead(_4);
|
- StorageLive(_8);
|
||||||
- StorageLive(_7);
|
|
||||||
+ nop;
|
+ nop;
|
||||||
StorageLive(_8);
|
|
||||||
_8 = copy _1;
|
|
||||||
StorageLive(_9);
|
StorageLive(_9);
|
||||||
- _9 = PhantomData::<String>;
|
_9 = copy _1;
|
||||||
- _7 = TypedId::<String>(move _8, move _9);
|
|
||||||
+ _9 = const PhantomData::<String>;
|
|
||||||
+ _7 = TypedId::<String>(copy _1, const PhantomData::<String>);
|
|
||||||
StorageDead(_9);
|
|
||||||
StorageDead(_8);
|
|
||||||
StorageLive(_10);
|
StorageLive(_10);
|
||||||
|
- _10 = PhantomData::<String>;
|
||||||
|
- _8 = TypedId::<String>(move _9, move _10);
|
||||||
|
+ _10 = const PhantomData::<String>;
|
||||||
|
+ _8 = TypedId::<String>(copy _1, const PhantomData::<String>);
|
||||||
|
StorageDead(_10);
|
||||||
|
StorageDead(_9);
|
||||||
StorageLive(_11);
|
StorageLive(_11);
|
||||||
StorageLive(_12);
|
StorageLive(_12);
|
||||||
- _12 = move _7;
|
StorageLive(_13);
|
||||||
- _11 = move _12 as u16 (Transmute);
|
- _13 = move _8;
|
||||||
+ _12 = copy _7;
|
- _12 = move _13 as u16 (Transmute);
|
||||||
+ _11 = copy _1;
|
+ _13 = copy _8;
|
||||||
StorageDead(_12);
|
+ _12 = copy _1;
|
||||||
- _10 = opaque::<u16>(move _11) -> [return: bb2, unwind continue];
|
StorageDead(_13);
|
||||||
+ _10 = opaque::<u16>(copy _1) -> [return: bb2, unwind continue];
|
- _11 = opaque::<u16>(move _12) -> [return: bb2, unwind continue];
|
||||||
|
+ _11 = opaque::<u16>(copy _1) -> [return: bb2, unwind continue];
|
||||||
}
|
}
|
||||||
|
|
||||||
bb2: {
|
bb2: {
|
||||||
|
StorageDead(_12);
|
||||||
StorageDead(_11);
|
StorageDead(_11);
|
||||||
StorageDead(_10);
|
- StorageLive(_14);
|
||||||
- StorageLive(_13);
|
|
||||||
+ nop;
|
+ nop;
|
||||||
StorageLive(_14);
|
|
||||||
_14 = copy _1;
|
|
||||||
- _13 = Result::<Never, u16>::Err(move _14);
|
|
||||||
+ _13 = Result::<Never, u16>::Err(copy _1);
|
|
||||||
StorageDead(_14);
|
|
||||||
StorageLive(_15);
|
StorageLive(_15);
|
||||||
|
_15 = copy _1;
|
||||||
|
- _14 = Result::<Never, u16>::Err(move _15);
|
||||||
|
+ _14 = Result::<Never, u16>::Err(copy _1);
|
||||||
|
StorageDead(_15);
|
||||||
StorageLive(_16);
|
StorageLive(_16);
|
||||||
StorageLive(_17);
|
StorageLive(_17);
|
||||||
- _17 = move _13;
|
StorageLive(_18);
|
||||||
- _16 = move _17 as u16 (Transmute);
|
- _18 = move _14;
|
||||||
+ _17 = copy _13;
|
- _17 = move _18 as u16 (Transmute);
|
||||||
+ _16 = copy _1;
|
+ _18 = copy _14;
|
||||||
StorageDead(_17);
|
+ _17 = copy _1;
|
||||||
- _15 = opaque::<u16>(move _16) -> [return: bb3, unwind continue];
|
StorageDead(_18);
|
||||||
+ _15 = opaque::<u16>(copy _1) -> [return: bb3, unwind continue];
|
- _16 = opaque::<u16>(move _17) -> [return: bb3, unwind continue];
|
||||||
|
+ _16 = opaque::<u16>(copy _1) -> [return: bb3, unwind continue];
|
||||||
}
|
}
|
||||||
|
|
||||||
bb3: {
|
bb3: {
|
||||||
|
StorageDead(_17);
|
||||||
StorageDead(_16);
|
StorageDead(_16);
|
||||||
StorageDead(_15);
|
- StorageLive(_19);
|
||||||
- StorageLive(_18);
|
|
||||||
+ nop;
|
+ nop;
|
||||||
StorageLive(_19);
|
|
||||||
_19 = copy _1;
|
|
||||||
- _18 = Option::<u16>::Some(move _19);
|
|
||||||
+ _18 = Option::<u16>::Some(copy _1);
|
|
||||||
StorageDead(_19);
|
|
||||||
StorageLive(_20);
|
StorageLive(_20);
|
||||||
|
_20 = copy _1;
|
||||||
|
- _19 = Option::<u16>::Some(move _20);
|
||||||
|
+ _19 = Option::<u16>::Some(copy _1);
|
||||||
|
StorageDead(_20);
|
||||||
StorageLive(_21);
|
StorageLive(_21);
|
||||||
StorageLive(_22);
|
StorageLive(_22);
|
||||||
_22 = copy _18;
|
StorageLive(_23);
|
||||||
- _21 = move _22 as u32 (Transmute);
|
_23 = copy _19;
|
||||||
+ _21 = copy _18 as u32 (Transmute);
|
- _22 = move _23 as u32 (Transmute);
|
||||||
StorageDead(_22);
|
+ _22 = copy _19 as u32 (Transmute);
|
||||||
_20 = opaque::<u32>(move _21) -> [return: bb4, unwind continue];
|
StorageDead(_23);
|
||||||
|
_21 = opaque::<u32>(move _22) -> [return: bb4, unwind continue];
|
||||||
}
|
}
|
||||||
|
|
||||||
bb4: {
|
bb4: {
|
||||||
|
StorageDead(_22);
|
||||||
StorageDead(_21);
|
StorageDead(_21);
|
||||||
StorageDead(_20);
|
|
||||||
StorageLive(_23);
|
|
||||||
StorageLive(_24);
|
StorageLive(_24);
|
||||||
_24 = copy _1;
|
|
||||||
- _23 = MyId(move _24);
|
|
||||||
+ _23 = copy _2;
|
|
||||||
StorageDead(_24);
|
|
||||||
StorageLive(_25);
|
StorageLive(_25);
|
||||||
|
_25 = copy _1;
|
||||||
|
- _24 = MyId(move _25);
|
||||||
|
+ _24 = copy _3;
|
||||||
|
StorageDead(_25);
|
||||||
StorageLive(_26);
|
StorageLive(_26);
|
||||||
StorageLive(_27);
|
StorageLive(_27);
|
||||||
- _27 = move _23;
|
StorageLive(_28);
|
||||||
- _26 = move _27 as i16 (Transmute);
|
- _28 = move _24;
|
||||||
+ _27 = copy _2;
|
- _27 = move _28 as i16 (Transmute);
|
||||||
+ _26 = copy _1 as i16 (Transmute);
|
+ _28 = copy _3;
|
||||||
StorageDead(_27);
|
+ _27 = copy _1 as i16 (Transmute);
|
||||||
_25 = opaque::<i16>(move _26) -> [return: bb5, unwind continue];
|
StorageDead(_28);
|
||||||
|
_26 = opaque::<i16>(move _27) -> [return: bb5, unwind continue];
|
||||||
}
|
}
|
||||||
|
|
||||||
bb5: {
|
bb5: {
|
||||||
|
StorageDead(_27);
|
||||||
StorageDead(_26);
|
StorageDead(_26);
|
||||||
StorageDead(_25);
|
- StorageLive(_29);
|
||||||
- StorageLive(_28);
|
|
||||||
+ nop;
|
+ nop;
|
||||||
StorageLive(_29);
|
|
||||||
_29 = copy _1;
|
|
||||||
StorageLive(_30);
|
StorageLive(_30);
|
||||||
_30 = copy _1;
|
_30 = copy _1;
|
||||||
- _28 = Pair(move _29, move _30);
|
|
||||||
+ _28 = Pair(copy _1, copy _1);
|
|
||||||
StorageDead(_30);
|
|
||||||
StorageDead(_29);
|
|
||||||
StorageLive(_31);
|
StorageLive(_31);
|
||||||
|
_31 = copy _1;
|
||||||
|
- _29 = Pair(move _30, move _31);
|
||||||
|
+ _29 = Pair(copy _1, copy _1);
|
||||||
|
StorageDead(_31);
|
||||||
|
StorageDead(_30);
|
||||||
StorageLive(_32);
|
StorageLive(_32);
|
||||||
StorageLive(_33);
|
StorageLive(_33);
|
||||||
- _33 = move _28;
|
StorageLive(_34);
|
||||||
- _32 = move _33 as u32 (Transmute);
|
- _34 = move _29;
|
||||||
+ _33 = copy _28;
|
- _33 = move _34 as u32 (Transmute);
|
||||||
+ _32 = copy _28 as u32 (Transmute);
|
+ _34 = copy _29;
|
||||||
StorageDead(_33);
|
+ _33 = copy _29 as u32 (Transmute);
|
||||||
_31 = opaque::<u32>(move _32) -> [return: bb6, unwind continue];
|
StorageDead(_34);
|
||||||
|
_32 = opaque::<u32>(move _33) -> [return: bb6, unwind continue];
|
||||||
}
|
}
|
||||||
|
|
||||||
bb6: {
|
bb6: {
|
||||||
|
StorageDead(_33);
|
||||||
StorageDead(_32);
|
StorageDead(_32);
|
||||||
StorageDead(_31);
|
|
||||||
StorageLive(_34);
|
|
||||||
StorageLive(_35);
|
StorageLive(_35);
|
||||||
_35 = copy _1;
|
|
||||||
StorageLive(_36);
|
StorageLive(_36);
|
||||||
_36 = copy _1;
|
_36 = copy _1;
|
||||||
- _34 = Pair(move _35, move _36);
|
|
||||||
+ _34 = copy _28;
|
|
||||||
StorageDead(_36);
|
|
||||||
StorageDead(_35);
|
|
||||||
StorageLive(_37);
|
StorageLive(_37);
|
||||||
|
_37 = copy _1;
|
||||||
|
- _35 = Pair(move _36, move _37);
|
||||||
|
+ _35 = copy _29;
|
||||||
|
StorageDead(_37);
|
||||||
|
StorageDead(_36);
|
||||||
StorageLive(_38);
|
StorageLive(_38);
|
||||||
StorageLive(_39);
|
StorageLive(_39);
|
||||||
- _39 = move _34;
|
StorageLive(_40);
|
||||||
- _38 = move _39 as u16 (Transmute);
|
- _40 = move _35;
|
||||||
+ _39 = copy _28;
|
- _39 = move _40 as u16 (Transmute);
|
||||||
+ _38 = copy _28 as u16 (Transmute);
|
+ _40 = copy _29;
|
||||||
StorageDead(_39);
|
+ _39 = copy _29 as u16 (Transmute);
|
||||||
_37 = opaque::<u16>(move _38) -> [return: bb7, unwind continue];
|
StorageDead(_40);
|
||||||
|
_38 = opaque::<u16>(move _39) -> [return: bb7, unwind continue];
|
||||||
}
|
}
|
||||||
|
|
||||||
bb7: {
|
bb7: {
|
||||||
|
StorageDead(_39);
|
||||||
StorageDead(_38);
|
StorageDead(_38);
|
||||||
StorageDead(_37);
|
- StorageLive(_41);
|
||||||
_0 = const ();
|
|
||||||
StorageDead(_34);
|
|
||||||
- StorageDead(_28);
|
|
||||||
+ nop;
|
+ nop;
|
||||||
StorageDead(_23);
|
StorageLive(_42);
|
||||||
- StorageDead(_18);
|
_42 = copy _1;
|
||||||
- StorageDead(_13);
|
- _41 = (move _42,);
|
||||||
- StorageDead(_7);
|
+ _41 = (copy _1,);
|
||||||
- StorageDead(_2);
|
StorageDead(_42);
|
||||||
|
StorageLive(_43);
|
||||||
|
StorageLive(_44);
|
||||||
|
StorageLive(_45);
|
||||||
|
_45 = copy _41;
|
||||||
|
- _44 = move _45 as u16 (Transmute);
|
||||||
|
+ _44 = copy _1;
|
||||||
|
StorageDead(_45);
|
||||||
|
- _43 = opaque::<u16>(move _44) -> [return: bb8, unwind continue];
|
||||||
|
+ _43 = opaque::<u16>(copy _1) -> [return: bb8, unwind continue];
|
||||||
|
}
|
||||||
|
|
||||||
|
bb8: {
|
||||||
|
StorageDead(_44);
|
||||||
|
StorageDead(_43);
|
||||||
|
- StorageLive(_46);
|
||||||
|
+ nop;
|
||||||
|
StorageLive(_47);
|
||||||
|
_47 = copy _1;
|
||||||
|
- _46 = [move _47];
|
||||||
|
+ _46 = [copy _1];
|
||||||
|
StorageDead(_47);
|
||||||
|
StorageLive(_48);
|
||||||
|
StorageLive(_49);
|
||||||
|
StorageLive(_50);
|
||||||
|
_50 = copy _46;
|
||||||
|
- _49 = move _50 as u16 (Transmute);
|
||||||
|
+ _49 = copy _1;
|
||||||
|
StorageDead(_50);
|
||||||
|
- _48 = opaque::<u16>(move _49) -> [return: bb9, unwind continue];
|
||||||
|
+ _48 = opaque::<u16>(copy _1) -> [return: bb9, unwind continue];
|
||||||
|
}
|
||||||
|
|
||||||
|
bb9: {
|
||||||
|
StorageDead(_49);
|
||||||
|
StorageDead(_48);
|
||||||
|
- StorageLive(_51);
|
||||||
|
+ nop;
|
||||||
|
StorageLive(_52);
|
||||||
|
_52 = copy _2;
|
||||||
|
StorageLive(_53);
|
||||||
|
- _53 = ();
|
||||||
|
- _51 = *const i32 from (move _52, move _53);
|
||||||
|
+ _53 = const ();
|
||||||
|
+ _51 = *const i32 from (copy _2, const ());
|
||||||
|
StorageDead(_53);
|
||||||
|
StorageDead(_52);
|
||||||
|
StorageLive(_54);
|
||||||
|
StorageLive(_55);
|
||||||
|
StorageLive(_56);
|
||||||
|
_56 = copy _51;
|
||||||
|
- _55 = move _56 as *const u8 (Transmute);
|
||||||
|
+ _55 = copy _2;
|
||||||
|
StorageDead(_56);
|
||||||
|
- _54 = opaque::<*const u8>(move _55) -> [return: bb10, unwind continue];
|
||||||
|
+ _54 = opaque::<*const u8>(copy _2) -> [return: bb10, unwind continue];
|
||||||
|
}
|
||||||
|
|
||||||
|
bb10: {
|
||||||
|
StorageDead(_55);
|
||||||
|
StorageDead(_54);
|
||||||
|
_0 = const ();
|
||||||
|
- StorageDead(_51);
|
||||||
|
- StorageDead(_46);
|
||||||
|
- StorageDead(_41);
|
||||||
|
+ nop;
|
||||||
|
+ nop;
|
||||||
|
+ nop;
|
||||||
|
StorageDead(_35);
|
||||||
|
- StorageDead(_29);
|
||||||
|
+ nop;
|
||||||
|
StorageDead(_24);
|
||||||
|
- StorageDead(_19);
|
||||||
|
- StorageDead(_14);
|
||||||
|
- StorageDead(_8);
|
||||||
|
- StorageDead(_3);
|
||||||
+ nop;
|
+ nop;
|
||||||
+ nop;
|
+ nop;
|
||||||
+ nop;
|
+ nop;
|
||||||
|
|
|
||||||
|
|
@ -933,7 +933,7 @@ fn cast_pointer_eq(p1: *mut u8, p2: *mut u32, p3: *mut u32, p4: *mut [u32]) {
|
||||||
// CHECK: _0 = const ();
|
// CHECK: _0 = const ();
|
||||||
}
|
}
|
||||||
|
|
||||||
unsafe fn aggregate_struct_then_transmute(id: u16) {
|
unsafe fn aggregate_struct_then_transmute(id: u16, thin: *const u8) {
|
||||||
// CHECK: opaque::<u16>(copy _1)
|
// CHECK: opaque::<u16>(copy _1)
|
||||||
let a = MyId(id);
|
let a = MyId(id);
|
||||||
opaque(std::intrinsics::transmute::<_, u16>(a));
|
opaque(std::intrinsics::transmute::<_, u16>(a));
|
||||||
|
|
@ -969,6 +969,18 @@ unsafe fn aggregate_struct_then_transmute(id: u16) {
|
||||||
// CHECK: opaque::<u16>(move [[TEMP]])
|
// CHECK: opaque::<u16>(move [[TEMP]])
|
||||||
let g = Pair(id, id);
|
let g = Pair(id, id);
|
||||||
opaque(std::intrinsics::transmute_unchecked::<_, u16>(g));
|
opaque(std::intrinsics::transmute_unchecked::<_, u16>(g));
|
||||||
|
|
||||||
|
// CHECK: opaque::<u16>(copy _1)
|
||||||
|
let h = (id,);
|
||||||
|
opaque(std::intrinsics::transmute::<_, u16>(h));
|
||||||
|
|
||||||
|
// CHECK: opaque::<u16>(copy _1)
|
||||||
|
let i = [id];
|
||||||
|
opaque(std::intrinsics::transmute::<_, u16>(i));
|
||||||
|
|
||||||
|
// CHECK: opaque::<*const u8>(copy _2)
|
||||||
|
let j: *const i32 = std::intrinsics::aggregate_raw_ptr(thin, ());
|
||||||
|
opaque(std::intrinsics::transmute::<_, *const u8>(j));
|
||||||
}
|
}
|
||||||
|
|
||||||
unsafe fn transmute_then_transmute_again(a: u32, c: char) {
|
unsafe fn transmute_then_transmute_again(a: u32, c: char) {
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue