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d32c2865
编写于
10月 20, 2019
作者:
S
Santiago Pastorino
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Intern place projection
上级
a19aed22
变更
31
隐藏空白更改
内联
并排
Showing
31 changed file
with
346 addition
and
185 deletion
+346
-185
src/librustc/mir/mod.rs
src/librustc/mir/mod.rs
+47
-29
src/librustc/mir/visit.rs
src/librustc/mir/visit.rs
+7
-3
src/librustc/ty/codec.rs
src/librustc/ty/codec.rs
+23
-2
src/librustc/ty/context.rs
src/librustc/ty/context.rs
+5
-0
src/librustc_mir/borrow_check/conflict_errors.rs
src/librustc_mir/borrow_check/conflict_errors.rs
+4
-2
src/librustc_mir/borrow_check/nll/renumber.rs
src/librustc_mir/borrow_check/nll/renumber.rs
+5
-1
src/librustc_mir/build/expr/as_place.rs
src/librustc_mir/build/expr/as_place.rs
+7
-7
src/librustc_mir/build/expr/as_rvalue.rs
src/librustc_mir/build/expr/as_rvalue.rs
+10
-5
src/librustc_mir/build/expr/into.rs
src/librustc_mir/build/expr/into.rs
+1
-1
src/librustc_mir/build/matches/mod.rs
src/librustc_mir/build/matches/mod.rs
+2
-2
src/librustc_mir/build/matches/simplify.rs
src/librustc_mir/build/matches/simplify.rs
+2
-2
src/librustc_mir/build/matches/test.rs
src/librustc_mir/build/matches/test.rs
+3
-2
src/librustc_mir/build/matches/util.rs
src/librustc_mir/build/matches/util.rs
+5
-4
src/librustc_mir/dataflow/move_paths/builder.rs
src/librustc_mir/dataflow/move_paths/builder.rs
+3
-3
src/librustc_mir/shim.rs
src/librustc_mir/shim.rs
+13
-12
src/librustc_mir/transform/cleanup_post_borrowck.rs
src/librustc_mir/transform/cleanup_post_borrowck.rs
+10
-4
src/librustc_mir/transform/const_prop.rs
src/librustc_mir/transform/const_prop.rs
+4
-0
src/librustc_mir/transform/copy_prop.rs
src/librustc_mir/transform/copy_prop.rs
+14
-5
src/librustc_mir/transform/deaggregator.rs
src/librustc_mir/transform/deaggregator.rs
+1
-0
src/librustc_mir/transform/erase_regions.rs
src/librustc_mir/transform/erase_regions.rs
+4
-0
src/librustc_mir/transform/generator.rs
src/librustc_mir/transform/generator.rs
+48
-22
src/librustc_mir/transform/inline.rs
src/librustc_mir/transform/inline.rs
+8
-1
src/librustc_mir/transform/instcombine.rs
src/librustc_mir/transform/instcombine.rs
+8
-5
src/librustc_mir/transform/mod.rs
src/librustc_mir/transform/mod.rs
+3
-3
src/librustc_mir/transform/no_landing_pads.rs
src/librustc_mir/transform/no_landing_pads.rs
+16
-4
src/librustc_mir/transform/promote_consts.rs
src/librustc_mir/transform/promote_consts.rs
+7
-3
src/librustc_mir/transform/simplify.rs
src/librustc_mir/transform/simplify.rs
+8
-3
src/librustc_mir/transform/uniform_array_move_out.rs
src/librustc_mir/transform/uniform_array_move_out.rs
+35
-32
src/librustc_mir/util/aggregate.rs
src/librustc_mir/util/aggregate.rs
+5
-4
src/librustc_mir/util/def_use.rs
src/librustc_mir/util/def_use.rs
+29
-15
src/librustc_mir/util/elaborate_drops.rs
src/librustc_mir/util/elaborate_drops.rs
+9
-9
未找到文件。
src/librustc/mir/mod.rs
浏览文件 @
d32c2865
...
...
@@ -15,8 +15,7 @@
use
crate
::
ty
::
print
::{
FmtPrinter
,
Printer
};
use
crate
::
ty
::
subst
::{
Subst
,
SubstsRef
};
use
crate
::
ty
::{
self
,
AdtDef
,
CanonicalUserTypeAnnotations
,
Region
,
Ty
,
TyCtxt
,
UserTypeAnnotationIndex
,
self
,
AdtDef
,
CanonicalUserTypeAnnotations
,
List
,
Region
,
Ty
,
TyCtxt
,
UserTypeAnnotationIndex
,
};
use
polonius_engine
::
Atom
;
...
...
@@ -1712,15 +1711,17 @@ fn fmt(&self, fmt: &mut Formatter<'_>) -> fmt::Result {
/// A path to a value; something that can be evaluated without
/// changing or disturbing program state.
#[derive(
Clone,
PartialEq,
Eq,
PartialOrd,
Ord,
Hash,
RustcEncodable,
RustcDecodable,
HashStable,
Clone,
PartialEq,
Eq,
PartialOrd,
Ord,
Hash,
RustcEncodable,
HashStable,
)]
pub
struct
Place
<
'tcx
>
{
pub
base
:
PlaceBase
<
'tcx
>
,
/// projection out of a place (access a field, deref a pointer, etc)
pub
projection
:
Box
<
[
PlaceElem
<
'tcx
>
]
>
,
pub
projection
:
&
'tcx
List
<
PlaceElem
<
'tcx
>
>
,
}
impl
<
'tcx
>
rustc_serialize
::
UseSpecializedDecodable
for
Place
<
'tcx
>
{}
#[derive(
Clone,
PartialEq,
Eq,
PartialOrd,
Ord,
Hash,
RustcEncodable,
RustcDecodable,
HashStable,
)]
...
...
@@ -1848,50 +1849,56 @@ pub struct PlaceRef<'a, 'tcx> {
}
impl
<
'tcx
>
Place
<
'tcx
>
{
// FIXME change this back to a const when projection is a shared slice.
//
// pub const RETURN_PLACE: Place<'tcx> = Place {
// base: PlaceBase::Local(RETURN_PLACE),
// projection: &[],
// };
// FIXME change this to a const fn by also making List::empty a const fn.
pub
fn
return_place
()
->
Place
<
'tcx
>
{
Place
{
base
:
PlaceBase
::
Local
(
RETURN_PLACE
),
projection
:
Box
::
new
([]
),
projection
:
List
::
empty
(
),
}
}
pub
fn
field
(
self
,
f
:
Field
,
ty
:
Ty
<
'tcx
>
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Field
(
f
,
ty
))
pub
fn
field
(
self
,
f
:
Field
,
ty
:
Ty
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Field
(
f
,
ty
)
,
tcx
)
}
pub
fn
deref
(
self
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Deref
)
pub
fn
deref
(
self
,
tcx
:
TyCtxt
<
'tcx
>
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Deref
,
tcx
)
}
pub
fn
downcast
(
self
,
adt_def
:
&
'tcx
AdtDef
,
variant_index
:
VariantIdx
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Downcast
(
Some
(
adt_def
.variants
[
variant_index
]
.ident.name
),
variant_index
,
))
pub
fn
downcast
(
self
,
adt_def
:
&
'tcx
AdtDef
,
variant_index
:
VariantIdx
,
tcx
:
TyCtxt
<
'tcx
>
,
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Downcast
(
Some
(
adt_def
.variants
[
variant_index
]
.ident.name
),
variant_index
,
),
tcx
,
)
}
pub
fn
downcast_unnamed
(
self
,
variant_index
:
VariantIdx
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Downcast
(
None
,
variant_index
))
pub
fn
downcast_unnamed
(
self
,
variant_index
:
VariantIdx
,
tcx
:
TyCtxt
<
'tcx
>
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Downcast
(
None
,
variant_index
)
,
tcx
)
}
pub
fn
index
(
self
,
index
:
Local
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Index
(
index
))
pub
fn
index
(
self
,
index
:
Local
,
tcx
:
TyCtxt
<
'tcx
>
)
->
Place
<
'tcx
>
{
self
.elem
(
ProjectionElem
::
Index
(
index
)
,
tcx
)
}
pub
fn
elem
(
self
,
elem
:
PlaceElem
<
'tcx
>
)
->
Place
<
'tcx
>
{
// FIXME(spastorino): revisit this again once projection is not a Box<[T]> anymore
let
mut
projection
=
self
.projection
.into_vec
();
/// This method copies `Place`'s projection, add an element and reintern it. Should not be used
/// to build a full `Place` it's just a convenient way to grab a projection and modify it in
/// flight.
// FIXME: It may be a better idea to move all these methods to `PlaceBuilder`
pub
fn
elem
(
self
,
elem
:
PlaceElem
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
)
->
Place
<
'tcx
>
{
let
mut
projection
=
self
.projection
.to_vec
();
projection
.push
(
elem
);
Place
{
base
:
self
.base
,
projection
:
projection
.into_boxed_slice
(
),
projection
:
tcx
.intern_place_elems
(
&
projection
),
}
}
...
...
@@ -1939,7 +1946,7 @@ impl From<Local> for Place<'_> {
fn
from
(
local
:
Local
)
->
Self
{
Place
{
base
:
local
.into
(),
projection
:
Box
::
new
([]
),
projection
:
List
::
empty
(
),
}
}
}
...
...
@@ -3190,6 +3197,17 @@ fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool {
}
}
impl
<
'tcx
>
TypeFoldable
<
'tcx
>
for
&
'tcx
ty
::
List
<
PlaceElem
<
'tcx
>>
{
fn
super_fold_with
<
F
:
TypeFolder
<
'tcx
>>
(
&
self
,
folder
:
&
mut
F
)
->
Self
{
let
v
=
self
.iter
()
.map
(|
t
|
t
.fold_with
(
folder
))
.collect
::
<
Vec
<
_
>>
();
folder
.tcx
()
.intern_place_elems
(
&
v
)
}
fn
super_visit_with
<
V
:
TypeVisitor
<
'tcx
>>
(
&
self
,
visitor
:
&
mut
V
)
->
bool
{
self
.iter
()
.any
(|
t
|
t
.visit_with
(
visitor
))
}
}
impl
<
'tcx
>
TypeFoldable
<
'tcx
>
for
Static
<
'tcx
>
{
fn
super_fold_with
<
F
:
TypeFolder
<
'tcx
>>
(
&
self
,
folder
:
&
mut
F
)
->
Self
{
Static
{
...
...
src/librustc/mir/visit.rs
浏览文件 @
d32c2865
...
...
@@ -784,6 +784,8 @@ fn visit_location(&mut self, body: & $($mutability)? Body<'tcx>, location: Locat
macro_rules!
visit_place_fns
{
(
mut
)
=>
(
fn
tcx
<
'a
>
(
&
'a
self
)
->
TyCtxt
<
'tcx
>
;
fn
super_place
(
&
mut
self
,
place
:
&
mut
Place
<
'tcx
>
,
...
...
@@ -793,19 +795,21 @@ fn super_place(
self
.visit_place_base
(
&
mut
place
.base
,
context
,
location
);
if
let
Some
(
new_projection
)
=
self
.process_projection
(
&
place
.projection
)
{
place
.projection
=
new_projection
;
place
.projection
=
self
.tcx
()
.intern_place_elems
(
&
new_projection
)
;
}
}
fn
process_projection
(
&
mut
self
,
projection
:
&
'a
[
PlaceElem
<
'tcx
>
],
)
->
Option
<
Box
<
[
PlaceElem
<
'tcx
>
]
>>
{
)
->
Option
<
Vec
<
PlaceElem
<
'tcx
>
>>
{
let
mut
projection
=
Cow
::
Borrowed
(
projection
);
for
i
in
0
..
projection
.len
()
{
if
let
Some
(
elem
)
=
projection
.get
(
i
)
{
if
let
Some
(
elem
)
=
self
.process_projection_elem
(
elem
)
{
// This converts the borrowed projection into `Cow::Owned(_)` and returns a
// clone of the projection so we can mutate and reintern later.
let
vec
=
projection
.to_mut
();
vec
[
i
]
=
elem
;
}
...
...
@@ -814,7 +818,7 @@ fn process_projection(
match
projection
{
Cow
::
Borrowed
(
_
)
=>
None
,
Cow
::
Owned
(
vec
)
=>
Some
(
vec
.into_boxed_slice
()
),
Cow
::
Owned
(
vec
)
=>
Some
(
vec
),
}
}
...
...
src/librustc/ty/codec.rs
浏览文件 @
d32c2865
...
...
@@ -13,9 +13,9 @@
use
rustc_serialize
::{
Decodable
,
Decoder
,
Encoder
,
Encodable
,
opaque
};
use
std
::
hash
::
Hash
;
use
std
::
intrinsics
;
use
crate
::
ty
::{
self
,
Ty
,
TyCtxt
};
use
crate
::
ty
::{
self
,
List
,
Ty
,
TyCtxt
};
use
crate
::
ty
::
subst
::
SubstsRef
;
use
crate
::
mir
::
interpret
::
Allocation
;
use
crate
::
mir
::
{
self
,
interpret
::
Allocation
}
;
use
syntax_pos
::
Span
;
/// The shorthand encoding uses an enum's variant index `usize`
...
...
@@ -218,6 +218,18 @@ pub fn decode_substs<D>(decoder: &mut D) -> Result<SubstsRef<'tcx>, D::Error>
Ok
(
tcx
.mk_substs
((
0
..
len
)
.map
(|
_
|
Decodable
::
decode
(
decoder
)))
?
)
}
#[inline]
pub
fn
decode_place
<
D
>
(
decoder
:
&
mut
D
)
->
Result
<
mir
::
Place
<
'tcx
>
,
D
::
Error
>
where
D
:
TyDecoder
<
'tcx
>
,
{
let
base
:
mir
::
PlaceBase
<
'tcx
>
=
Decodable
::
decode
(
decoder
)
?
;
let
len
=
decoder
.read_usize
()
?
;
let
projection
:
&
'tcx
List
<
mir
::
PlaceElem
<
'tcx
>>
=
decoder
.tcx
()
.mk_place_elems
((
0
..
len
)
.map
(|
_
|
Decodable
::
decode
(
decoder
)))
?
;
Ok
(
mir
::
Place
{
base
,
projection
})
}
#[inline]
pub
fn
decode_region
<
D
>
(
decoder
:
&
mut
D
)
->
Result
<
ty
::
Region
<
'tcx
>
,
D
::
Error
>
where
...
...
@@ -413,6 +425,15 @@ fn specialized_decode(&mut self) -> Result<SubstsRef<'tcx>, Self::Error> {
}
}
impl
<
$
(
$typaram
),
*>
SpecializedDecoder
<
$crate
::
mir
::
Place
<
'tcx
>>
for
$DecoderName
<
$
(
$typaram
),
*>
{
fn
specialized_decode
(
&
mut
self
)
->
Result
<
$crate
::
mir
::
Place
<
'tcx
>
,
Self
::
Error
>
{
decode_place
(
self
)
}
}
impl
<
$
(
$typaram
),
*>
SpecializedDecoder
<
ty
::
Region
<
'tcx
>>
for
$DecoderName
<
$
(
$typaram
),
*>
{
fn
specialized_decode
(
&
mut
self
)
->
Result
<
ty
::
Region
<
'tcx
>
,
Self
::
Error
>
{
...
...
src/librustc/ty/context.rs
浏览文件 @
d32c2865
...
...
@@ -2711,6 +2711,11 @@ pub fn mk_substs<I: InternAs<[GenericArg<'tcx>],
iter
.intern_with
(|
xs
|
self
.intern_substs
(
xs
))
}
pub
fn
mk_place_elems
<
I
:
InternAs
<
[
PlaceElem
<
'tcx
>
],
&
'tcx
List
<
PlaceElem
<
'tcx
>>>>
(
self
,
iter
:
I
)
->
I
::
Output
{
iter
.intern_with
(|
xs
|
self
.intern_place_elems
(
xs
))
}
pub
fn
mk_substs_trait
(
self
,
self_ty
:
Ty
<
'tcx
>
,
rest
:
&
[
GenericArg
<
'tcx
>
])
...
...
src/librustc_mir/borrow_check/conflict_errors.rs
浏览文件 @
d32c2865
...
...
@@ -707,10 +707,12 @@ pub(super) fn report_borrowed_value_does_not_live_long_enough(
_
=>
drop_span
,
};
let
root_place_projection
=
self
.infcx.tcx
.intern_place_elems
(
root_place
.projection
);
if
self
.access_place_error_reported
.contains
(
&
(
Place
{
base
:
root_place
.base
.clone
(),
projection
:
root_place
.projection
.to_vec
()
.into_boxed_slice
()
,
projection
:
root_place
_projection
,
},
borrow_span
))
{
debug!
(
...
...
@@ -723,7 +725,7 @@ pub(super) fn report_borrowed_value_does_not_live_long_enough(
self
.access_place_error_reported
.insert
((
Place
{
base
:
root_place
.base
.clone
(),
projection
:
root_place
.projection
.to_vec
()
.into_boxed_slice
()
,
projection
:
root_place
_projection
,
},
borrow_span
));
if
let
StorageDeadOrDrop
::
Destructor
(
dropped_ty
)
=
...
...
src/librustc_mir/borrow_check/nll/renumber.rs
浏览文件 @
d32c2865
use
rustc
::
ty
::
subst
::
SubstsRef
;
use
rustc
::
ty
::{
self
,
Ty
,
TypeFoldable
};
use
rustc
::
ty
::{
self
,
Ty
,
Ty
Ctxt
,
Ty
peFoldable
};
use
rustc
::
mir
::{
Body
,
Location
,
PlaceElem
,
Promoted
};
use
rustc
::
mir
::
visit
::{
MutVisitor
,
TyContext
};
use
rustc
::
infer
::{
InferCtxt
,
NLLRegionVariableOrigin
};
...
...
@@ -54,6 +54,10 @@ fn renumber_regions<T>(&mut self, value: &T) -> T
}
impl
<
'a
,
'tcx
>
MutVisitor
<
'tcx
>
for
NLLVisitor
<
'a
,
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.infcx.tcx
}
fn
visit_ty
(
&
mut
self
,
ty
:
&
mut
Ty
<
'tcx
>
,
ty_context
:
TyContext
)
{
debug!
(
"visit_ty(ty={:?}, ty_context={:?})"
,
ty
,
ty_context
);
...
...
src/librustc_mir/build/expr/as_place.rs
浏览文件 @
d32c2865
...
...
@@ -6,7 +6,7 @@
use
crate
::
hair
::
*
;
use
rustc
::
mir
::
interpret
::{
PanicInfo
::
BoundsCheck
};
use
rustc
::
mir
::
*
;
use
rustc
::
ty
::{
CanonicalUserTypeAnnotation
,
Ty
,
Variance
};
use
rustc
::
ty
::{
CanonicalUserTypeAnnotation
,
Ty
,
TyCtxt
,
Variance
};
use
rustc_index
::
vec
::
Idx
;
...
...
@@ -23,10 +23,10 @@ struct PlaceBuilder<'tcx> {
}
impl
PlaceBuilder
<
'tcx
>
{
fn
into_place
(
self
)
->
Place
<
'tcx
>
{
fn
into_place
(
self
,
tcx
:
TyCtxt
<
'tcx
>
)
->
Place
<
'tcx
>
{
Place
{
base
:
self
.base
,
projection
:
self
.projection
.into_boxed_slice
(
),
projection
:
tcx
.intern_place_elems
(
&
self
.projection
),
}
}
...
...
@@ -73,7 +73,7 @@ pub fn as_place<M>(&mut self, mut block: BasicBlock, expr: M) -> BlockAnd<Place<
M
:
Mirror
<
'tcx
,
Output
=
Expr
<
'tcx
>>
,
{
let
place_builder
=
unpack!
(
block
=
self
.as_place_builder
(
block
,
expr
));
block
.and
(
place_builder
.into_place
())
block
.and
(
place_builder
.into_place
(
self
.hir
.tcx
()
))
}
/// This is used when constructing a compound `Place`, so that we can avoid creating
...
...
@@ -96,7 +96,7 @@ pub fn as_read_only_place<M>(&mut self, mut block: BasicBlock, expr: M) -> Block
M
:
Mirror
<
'tcx
,
Output
=
Expr
<
'tcx
>>
,
{
let
place_builder
=
unpack!
(
block
=
self
.as_read_only_place_builder
(
block
,
expr
));
block
.and
(
place_builder
.into_place
())
block
.and
(
place_builder
.into_place
(
self
.hir
.tcx
()
))
}
/// This is used when constructing a compound `Place`, so that we can avoid creating
...
...
@@ -165,7 +165,7 @@ fn expr_as_place(
Mutability
::
Not
,
));
let
slice
=
place_builder
.clone
()
.into_place
();
let
slice
=
place_builder
.clone
()
.into_place
(
this
.hir
.tcx
()
);
// bounds check:
let
(
len
,
lt
)
=
(
this
.temp
(
usize_ty
.clone
(),
expr_span
),
...
...
@@ -225,7 +225,7 @@ fn expr_as_place(
}
);
let
place
=
place_builder
.clone
()
.into_place
();
let
place
=
place_builder
.clone
()
.into_place
(
this
.hir
.tcx
()
);
this
.cfg
.push
(
block
,
Statement
{
...
...
src/librustc_mir/build/expr/as_rvalue.rs
浏览文件 @
d32c2865
...
...
@@ -139,7 +139,7 @@ fn expr_as_rvalue(
// initialize the box contents:
unpack!
(
block
=
this
.into
(
&
Place
::
from
(
result
)
.deref
(),
&
Place
::
from
(
result
)
.deref
(
this
.hir
.tcx
()
),
block
,
value
)
);
...
...
@@ -296,8 +296,13 @@ fn expr_as_rvalue(
.zip
(
field_types
.into_iter
())
.map
(|(
n
,
ty
)|
match
fields_map
.get
(
&
n
)
{
Some
(
v
)
=>
v
.clone
(),
None
=>
this
.consume_by_copy_or_move
(
base
.clone
()
.field
(
n
,
ty
)),
})
.collect
()
None
=>
this
.consume_by_copy_or_move
(
base
.clone
()
.field
(
n
,
ty
,
this
.hir
.tcx
(),
)),
})
.collect
()
}
else
{
field_names
.iter
()
...
...
@@ -397,8 +402,8 @@ pub fn build_binary_op(
let
val_fld
=
Field
::
new
(
0
);
let
of_fld
=
Field
::
new
(
1
);
let
val
=
result_value
.clone
()
.field
(
val_fld
,
ty
);
let
of
=
result_value
.field
(
of_fld
,
bool_ty
);
let
val
=
result_value
.clone
()
.field
(
val_fld
,
ty
,
self
.hir
.tcx
()
);
let
of
=
result_value
.field
(
of_fld
,
bool_ty
,
self
.hir
.tcx
()
);
let
err
=
PanicInfo
::
Overflow
(
op
);
...
...
src/librustc_mir/build/expr/into.rs
浏览文件 @
d32c2865
...
...
@@ -235,7 +235,7 @@ pub fn into_expr(
});
let
ptr_temp
=
Place
::
from
(
ptr_temp
);
let
block
=
unpack!
(
this
.into
(
&
ptr_temp
,
block
,
ptr
));
this
.into
(
&
ptr_temp
.deref
(),
block
,
val
)
this
.into
(
&
ptr_temp
.deref
(
this
.hir
.tcx
()
),
block
,
val
)
}
else
{
let
args
:
Vec
<
_
>
=
args
.into_iter
()
...
...
src/librustc_mir/build/matches/mod.rs
浏览文件 @
d32c2865
...
...
@@ -948,7 +948,7 @@ fn select_matched_candidates(
fake_borrows
.insert
(
Place
{
base
:
source
.base
.clone
(),
projection
:
proj_base
.to_vec
()
.into_boxed_slice
(
),
projection
:
self
.hir
.tcx
()
.intern_place_elems
(
proj_base
),
});
}
}
...
...
@@ -1488,7 +1488,7 @@ fn bind_and_guard_matched_candidate<'pat>(
BorrowKind
::
Shallow
,
Place
{
base
:
place
.base
.clone
(),
projection
:
place
.projection
.to_vec
()
.into_boxed_slice
(
),
projection
:
tcx
.intern_place_elems
(
place
.projection
),
},
);
self
.cfg
.push_assign
(
...
...
src/librustc_mir/build/matches/simplify.rs
浏览文件 @
d32c2865
...
...
@@ -166,7 +166,7 @@ fn simplify_match_pair<'pat>(&mut self,
}
});
if
irrefutable
{
let
place
=
match_pair
.place
.downcast
(
adt_def
,
variant_index
);
let
place
=
match_pair
.place
.downcast
(
adt_def
,
variant_index
,
tcx
);
candidate
.match_pairs
.extend
(
self
.field_match_pairs
(
place
,
subpatterns
));
Ok
(())
}
else
{
...
...
@@ -191,7 +191,7 @@ fn simplify_match_pair<'pat>(&mut self,
}
PatKind
::
Deref
{
ref
subpattern
}
=>
{
let
place
=
match_pair
.place
.deref
();
let
place
=
match_pair
.place
.deref
(
tcx
);
candidate
.match_pairs
.push
(
MatchPair
::
new
(
place
,
subpattern
));
Ok
(())
}
...
...
src/librustc_mir/build/matches/test.rs
浏览文件 @
d32c2865
...
...
@@ -749,13 +749,14 @@ fn candidate_after_variant_switch<'pat>(
// `(x as Variant).0 @ P1` and `(x as Variant).1 @ P1`.
let
elem
=
ProjectionElem
::
Downcast
(
Some
(
adt_def
.variants
[
variant_index
]
.ident.name
),
variant_index
);
let
downcast_place
=
match_pair
.place
.elem
(
elem
);
// `(x as Variant)`
let
downcast_place
=
match_pair
.place
.elem
(
elem
,
self
.hir
.tcx
()
);
// `(x as Variant)`
let
consequent_match_pairs
=
subpatterns
.iter
()
.map
(|
subpattern
|
{
// e.g., `(x as Variant).0`
let
place
=
downcast_place
.clone
()
.field
(
subpattern
.field
,
subpattern
.pattern.ty
);
subpattern
.pattern.ty
,
self
.hir
.tcx
());
// e.g., `(x as Variant).0 @ P1`
MatchPair
::
new
(
place
,
&
subpattern
.pattern
)
});
...
...
src/librustc_mir/build/matches/util.rs
浏览文件 @
d32c2865
...
...
@@ -13,7 +13,8 @@ pub fn field_match_pairs<'pat>(&mut self,
subpatterns
.iter
()
.map
(|
fieldpat
|
{
let
place
=
place
.clone
()
.field
(
fieldpat
.field
,
fieldpat
.pattern.ty
);
fieldpat
.pattern.ty
,
self
.hir
.tcx
());
MatchPair
::
new
(
place
,
&
fieldpat
.pattern
)
})
.collect
()
...
...
@@ -37,7 +38,7 @@ pub fn prefix_slice_suffix<'pat>(&mut self,
min_length
,
from_end
:
false
,
};
let
place
=
place
.clone
()
.elem
(
elem
);
let
place
=
place
.clone
()
.elem
(
elem
,
self
.hir
.tcx
()
);
MatchPair
::
new
(
place
,
subpattern
)
})
);
...
...
@@ -46,7 +47,7 @@ pub fn prefix_slice_suffix<'pat>(&mut self,
let
subslice
=
place
.clone
()
.elem
(
ProjectionElem
::
Subslice
{
from
:
prefix
.len
()
as
u32
,
to
:
suffix
.len
()
as
u32
});
}
,
self
.hir
.tcx
()
);
match_pairs
.push
(
MatchPair
::
new
(
subslice
,
subslice_pat
));
}
...
...
@@ -60,7 +61,7 @@ pub fn prefix_slice_suffix<'pat>(&mut self,
min_length
,
from_end
:
true
,
};
let
place
=
place
.clone
()
.elem
(
elem
);
let
place
=
place
.clone
()
.elem
(
elem
,
self
.hir
.tcx
()
);
MatchPair
::
new
(
place
,
subpattern
)
})
);
...
...
src/librustc_mir/dataflow/move_paths/builder.rs
浏览文件 @
d32c2865
...
...
@@ -114,7 +114,7 @@ fn move_path_for(&mut self, place: &Place<'tcx>) -> Result<MovePathIndex, MoveEr
BorrowedContent
{
target_place
:
Place
{
base
:
place
.base
.clone
(),
projection
:
proj
.to_vec
()
.into_boxed_slice
(
),
projection
:
tcx
.intern_place_elems
(
proj
),
},
},
));
...
...
@@ -172,7 +172,7 @@ fn move_path_for(&mut self, place: &Place<'tcx>) -> Result<MovePathIndex, MoveEr
Some
(
base
),
Place
{
base
:
place
.base
.clone
(),
projection
:
proj
.to_vec
()
.into_boxed_slice
(
),
projection
:
tcx
.intern_place_elems
(
proj
),
},
);
ent
.insert
(
path
);
...
...
@@ -274,7 +274,7 @@ fn gather_statement(&mut self, stmt: &Statement<'tcx>) {
// Box starts out uninitialized - need to create a separate
// move-path for the interior so it will be separate from
// the exterior.
self
.create_move_path
(
&
place
.clone
()
.deref
());
self
.create_move_path
(
&
place
.clone
()
.deref
(
self
.builder.tcx
));
self
.gather_init
(
place
.as_ref
(),
InitKind
::
Shallow
);
}
else
{
self
.gather_init
(
place
.as_ref
(),
InitKind
::
Deep
);
...
...
src/librustc_mir/shim.rs
浏览文件 @
d32c2865
...
...
@@ -117,7 +117,7 @@ fn make_shim<'tcx>(tcx: TyCtxt<'tcx>, instance: ty::InstanceDef<'tcx>) -> &'tcx
run_passes
(
tcx
,
&
mut
result
,
instance
,
None
,
MirPhase
::
Const
,
&
[
&
add_moves_for_packed_drops
::
AddMovesForPackedDrops
,
&
no_landing_pads
::
NoLandingPads
,
&
no_landing_pads
::
NoLandingPads
::
new
(
tcx
)
,
&
remove_noop_landing_pads
::
RemoveNoopLandingPads
,
&
simplify
::
SimplifyCfg
::
new
(
"make_shim"
),
&
add_call_guards
::
CriticalCallEdges
,
...
...
@@ -231,7 +231,7 @@ fn build_drop_shim<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId, ty: Option<Ty<'tcx>>)
tcx
,
param_env
};
let
dropee
=
dropee_ptr
.deref
();
let
dropee
=
dropee_ptr
.deref
(
tcx
);
let
resume_block
=
elaborator
.patch
.resume_block
();
elaborate_drops
::
elaborate_drop
(
&
mut
elaborator
,
...
...
@@ -312,7 +312,7 @@ fn build_clone_shim<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId, self_ty: Ty<'tcx>) -
let
is_copy
=
self_ty
.is_copy_modulo_regions
(
tcx
,
param_env
,
builder
.span
);
let
dest
=
Place
::
return_place
();
let
src
=
Place
::
from
(
Local
::
new
(
1
+
0
))
.deref
();
let
src
=
Place
::
from
(
Local
::
new
(
1
+
0
))
.deref
(
tcx
);
match
self_ty
.kind
{
_
if
is_copy
=>
builder
.copy_shim
(),
...
...
@@ -415,7 +415,7 @@ fn make_statement(&self, kind: StatementKind<'tcx>) -> Statement<'tcx> {
}
fn
copy_shim
(
&
mut
self
)
{
let
rcvr
=
Place
::
from
(
Local
::
new
(
1
+
0
))
.deref
();
let
rcvr
=
Place
::
from
(
Local
::
new
(
1
+
0
))
.deref
(
self
.tcx
);
let
ret_statement
=
self
.make_statement
(
StatementKind
::
Assign
(
box
(
...
...
@@ -561,8 +561,8 @@ fn array_shim(&mut self, dest: Place<'tcx>, src: Place<'tcx>, ty: Ty<'tcx>, len:
// BB #2
// `dest[i] = Clone::clone(src[beg])`;
// Goto #3 if ok, #5 if unwinding happens.
let
dest_field
=
dest
.clone
()
.index
(
beg
);
let
src_field
=
src
.index
(
beg
);
let
dest_field
=
dest
.clone
()
.index
(
beg
,
self
.tcx
);
let
src_field
=
src
.index
(
beg
,
self
.tcx
);
self
.make_clone_call
(
dest_field
,
src_field
,
ty
,
BasicBlock
::
new
(
3
),
BasicBlock
::
new
(
5
));
...
...
@@ -616,7 +616,7 @@ fn array_shim(&mut self, dest: Place<'tcx>, src: Place<'tcx>, ty: Ty<'tcx>, len:
// BB #7 (cleanup)
// `drop(dest[beg])`;
self
.block
(
vec!
[],
TerminatorKind
::
Drop
{
location
:
dest
.index
(
beg
),
location
:
dest
.index
(
beg
,
self
.tcx
),
target
:
BasicBlock
::
new
(
8
),
unwind
:
None
,
},
true
);
...
...
@@ -648,9 +648,9 @@ fn tuple_like_shim<I>(&mut self, dest: Place<'tcx>,
let
mut
previous_field
=
None
;
for
(
i
,
ity
)
in
tys
.enumerate
()
{
let
field
=
Field
::
new
(
i
);
let
src_field
=
src
.clone
()
.field
(
field
,
ity
);
let
src_field
=
src
.clone
()
.field
(
field
,
ity
,
self
.tcx
);
let
dest_field
=
dest
.clone
()
.field
(
field
,
ity
);
let
dest_field
=
dest
.clone
()
.field
(
field
,
ity
,
self
.tcx
);
// #(2i + 1) is the cleanup block for the previous clone operation
let
cleanup_block
=
self
.block_index_offset
(
1
);
...
...
@@ -721,14 +721,14 @@ fn build_call_shim<'tcx>(
let
rcvr
=
match
rcvr_adjustment
{
Adjustment
::
Identity
=>
Operand
::
Move
(
rcvr_l
),
Adjustment
::
Deref
=>
Operand
::
Copy
(
rcvr_l
.deref
()),
Adjustment
::
Deref
=>
Operand
::
Copy
(
rcvr_l
.deref
(
tcx
)),
Adjustment
::
DerefMove
=>
{
// fn(Self, ...) -> fn(*mut Self, ...)
let
arg_ty
=
local_decls
[
rcvr_arg
]
.ty
;
debug_assert!
(
tcx
.generics_of
(
def_id
)
.has_self
&&
arg_ty
==
tcx
.types.self_param
);
local_decls
[
rcvr_arg
]
.ty
=
tcx
.mk_mut_ptr
(
arg_ty
);
Operand
::
Move
(
rcvr_l
.deref
())
Operand
::
Move
(
rcvr_l
.deref
(
tcx
))
}
Adjustment
::
RefMut
=>
{
// let rcvr = &mut rcvr;
...
...
@@ -772,7 +772,7 @@ fn build_call_shim<'tcx>(
if
let
Some
(
untuple_args
)
=
untuple_args
{
args
.extend
(
untuple_args
.iter
()
.enumerate
()
.map
(|(
i
,
ity
)|
{
let
arg_place
=
Place
::
from
(
Local
::
new
(
1
+
1
));
Operand
::
Move
(
arg_place
.field
(
Field
::
new
(
i
),
*
ity
))
Operand
::
Move
(
arg_place
.field
(
Field
::
new
(
i
),
*
ity
,
tcx
))
}));
}
else
{
args
.extend
((
1
..
sig
.inputs
()
.len
())
.map
(|
i
|
{
...
...
@@ -901,6 +901,7 @@ pub fn build_adt_ctor(tcx: TyCtxt<'_>, ctor_id: DefId) -> &Body<'_> {
)),
AggregateKind
::
Adt
(
adt_def
,
variant_index
,
substs
,
None
,
None
),
source_info
,
tcx
,
)
.collect
();
let
start_block
=
BasicBlockData
{
...
...
src/librustc_mir/transform/cleanup_post_borrowck.rs
浏览文件 @
d32c2865
...
...
@@ -24,16 +24,22 @@
pub
struct
CleanupNonCodegenStatements
;
pub
struct
DeleteNonCodegenStatements
;
pub
struct
DeleteNonCodegenStatements
<
'tcx
>
{
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
<
'tcx
>
MirPass
<
'tcx
>
for
CleanupNonCodegenStatements
{
fn
run_pass
(
&
self
,
_
tcx
:
TyCtxt
<
'tcx
>
,
_
source
:
MirSource
<
'tcx
>
,
body
:
&
mut
Body
<
'tcx
>
)
{
let
mut
delete
=
DeleteNonCodegenStatements
;
fn
run_pass
(
&
self
,
tcx
:
TyCtxt
<
'tcx
>
,
_
source
:
MirSource
<
'tcx
>
,
body
:
&
mut
Body
<
'tcx
>
)
{
let
mut
delete
=
DeleteNonCodegenStatements
{
tcx
}
;
delete
.visit_body
(
body
);
}
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
DeleteNonCodegenStatements
{
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
DeleteNonCodegenStatements
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_statement
(
&
mut
self
,
statement
:
&
mut
Statement
<
'tcx
>
,
location
:
Location
)
{
...
...
src/librustc_mir/transform/const_prop.rs
浏览文件 @
d32c2865
...
...
@@ -687,6 +687,10 @@ fn visit_local(
}
impl
<
'mir
,
'tcx
>
MutVisitor
<
'tcx
>
for
ConstPropagator
<
'mir
,
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_constant
(
&
mut
self
,
constant
:
&
mut
Constant
<
'tcx
>
,
...
...
src/librustc_mir/transform/copy_prop.rs
浏览文件 @
d32c2865
...
...
@@ -126,7 +126,8 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, _source: MirSource<'tcx>, body: &mut Body<
}
}
changed
=
action
.perform
(
body
,
&
def_use_analysis
,
dest_local
,
location
)
||
changed
;
changed
=
action
.perform
(
body
,
&
def_use_analysis
,
dest_local
,
location
,
tcx
)
||
changed
;
// FIXME(pcwalton): Update the use-def chains to delete the instructions instead of
// regenerating the chains.
break
...
...
@@ -244,7 +245,8 @@ fn perform(self,
body
:
&
mut
Body
<
'tcx
>
,
def_use_analysis
:
&
DefUseAnalysis
,
dest_local
:
Local
,
location
:
Location
)
location
:
Location
,
tcx
:
TyCtxt
<
'tcx
>
)
->
bool
{
match
self
{
Action
::
PropagateLocalCopy
(
src_local
)
=>
{
...
...
@@ -268,7 +270,7 @@ fn perform(self,
}
// Replace all uses of the destination local with the source local.
def_use_analysis
.replace_all_defs_and_uses_with
(
dest_local
,
body
,
src_local
);
def_use_analysis
.replace_all_defs_and_uses_with
(
dest_local
,
body
,
src_local
,
tcx
);
// Finally, zap the now-useless assignment instruction.
debug!
(
" Deleting assignment"
);
...
...
@@ -292,7 +294,8 @@ fn perform(self,
// Replace all uses of the destination local with the constant.
let
mut
visitor
=
ConstantPropagationVisitor
::
new
(
dest_local
,
src_constant
);
src_constant
,
tcx
);
for
dest_place_use
in
&
dest_local_info
.defs_and_uses
{
visitor
.visit_location
(
body
,
dest_place_use
.location
)
}
...
...
@@ -324,21 +327,27 @@ fn perform(self,
struct
ConstantPropagationVisitor
<
'tcx
>
{
dest_local
:
Local
,
constant
:
Constant
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
,
uses_replaced
:
usize
,
}
impl
<
'tcx
>
ConstantPropagationVisitor
<
'tcx
>
{
fn
new
(
dest_local
:
Local
,
constant
:
Constant
<
'tcx
>
)
fn
new
(
dest_local
:
Local
,
constant
:
Constant
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
)
->
ConstantPropagationVisitor
<
'tcx
>
{
ConstantPropagationVisitor
{
dest_local
,
constant
,
tcx
,
uses_replaced
:
0
,
}
}
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
ConstantPropagationVisitor
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_operand
(
&
mut
self
,
operand
:
&
mut
Operand
<
'tcx
>
,
location
:
Location
)
{
self
.super_operand
(
operand
,
location
);
...
...
src/librustc_mir/transform/deaggregator.rs
浏览文件 @
d32c2865
...
...
@@ -45,6 +45,7 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, _source: MirSource<'tcx>, body: &mut Body<
}),
*
kind
,
source_info
,
tcx
,
))
});
}
...
...
src/librustc_mir/transform/erase_regions.rs
浏览文件 @
d32c2865
...
...
@@ -23,6 +23,10 @@ pub fn new(tcx: TyCtxt<'tcx>) -> Self {
}
impl
MutVisitor
<
'tcx
>
for
EraseRegionsVisitor
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_ty
(
&
mut
self
,
ty
:
&
mut
Ty
<
'tcx
>
,
_
:
TyContext
)
{
*
ty
=
self
.tcx
.erase_regions
(
ty
);
}
...
...
src/librustc_mir/transform/generator.rs
浏览文件 @
d32c2865
...
...
@@ -74,12 +74,17 @@
pub
struct
StateTransform
;
struct
RenameLocalVisitor
{
struct
RenameLocalVisitor
<
'tcx
>
{
from
:
Local
,
to
:
Local
,
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
RenameLocalVisitor
{
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
RenameLocalVisitor
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_local
(
&
mut
self
,
local
:
&
mut
Local
,
_
:
PlaceContext
,
...
...
@@ -102,9 +107,15 @@ fn process_projection_elem(
}
}
struct
DerefArgVisitor
;
struct
DerefArgVisitor
<
'tcx
>
{
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
DerefArgVisitor
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
DerefArgVisitor
{
fn
visit_local
(
&
mut
self
,
local
:
&
mut
Local
,
_
:
PlaceContext
,
...
...
@@ -119,8 +130,8 @@ fn visit_place(&mut self,
if
place
.base
==
PlaceBase
::
Local
(
self_arg
())
{
replace_base
(
place
,
Place
{
base
:
PlaceBase
::
Local
(
self_arg
()),
projection
:
Box
::
new
(
[
ProjectionElem
::
Deref
]),
});
projection
:
self
.tcx
()
.intern_place_elems
(
&
vec!
[
ProjectionElem
::
Deref
]),
}
,
self
.tcx
);
}
else
{
self
.visit_place_base
(
&
mut
place
.base
,
context
,
location
);
...
...
@@ -135,9 +146,14 @@ fn visit_place(&mut self,
struct
PinArgVisitor
<
'tcx
>
{
ref_gen_ty
:
Ty
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
PinArgVisitor
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_local
(
&
mut
self
,
local
:
&
mut
Local
,
_
:
PlaceContext
,
...
...
@@ -145,15 +161,19 @@ fn visit_local(&mut self,
assert_ne!
(
*
local
,
self_arg
());
}
fn
visit_place
(
&
mut
self
,
place
:
&
mut
Place
<
'tcx
>
,
context
:
PlaceContext
,
location
:
Location
)
{
fn
visit_place
(
&
mut
self
,
place
:
&
mut
Place
<
'tcx
>
,
context
:
PlaceContext
,
location
:
Location
)
{
if
place
.base
==
PlaceBase
::
Local
(
self_arg
())
{
replace_base
(
place
,
Place
{
base
:
PlaceBase
::
Local
(
self_arg
()),
projection
:
Box
::
new
([
ProjectionElem
::
Field
(
Field
::
new
(
0
),
self
.ref_gen_ty
)]),
});
replace_base
(
place
,
Place
{
base
:
PlaceBase
::
Local
(
self_arg
()),
projection
:
self
.tcx
()
.intern_place_elems
(
&
vec!
[
ProjectionElem
::
Field
(
Field
::
new
(
0
),
self
.ref_gen_ty
,
)]),
},
self
.tcx
,
);
}
else
{
self
.visit_place_base
(
&
mut
place
.base
,
context
,
location
);
...
...
@@ -166,13 +186,13 @@ fn visit_place(&mut self,
}
}
fn
replace_base
(
place
:
&
mut
Place
<
'tcx
>
,
new_base
:
Place
<
'tcx
>
)
{
fn
replace_base
<
'tcx
>
(
place
:
&
mut
Place
<
'tcx
>
,
new_base
:
Place
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
)
{
place
.base
=
new_base
.base
;
let
mut
new_projection
=
new_base
.projection
.to_vec
();
new_projection
.append
(
&
mut
place
.projection
.to_vec
());
place
.projection
=
new_projection
.into_boxed_slice
(
);
place
.projection
=
tcx
.intern_place_elems
(
&
new_projection
);
}
fn
self_arg
()
->
Local
{
...
...
@@ -226,13 +246,13 @@ fn make_state(&self, idx: VariantIdx, val: Operand<'tcx>) -> Rvalue<'tcx> {
// Create a Place referencing a generator struct field
fn
make_field
(
&
self
,
variant_index
:
VariantIdx
,
idx
:
usize
,
ty
:
Ty
<
'tcx
>
)
->
Place
<
'tcx
>
{
let
self_place
=
Place
::
from
(
self_arg
());
let
base
=
self_place
.downcast_unnamed
(
variant_index
);
let
base
=
self_place
.downcast_unnamed
(
variant_index
,
self
.tcx
);
let
mut
projection
=
base
.projection
.to_vec
();
projection
.push
(
ProjectionElem
::
Field
(
Field
::
new
(
idx
),
ty
));
Place
{
base
:
base
.base
,
projection
:
projection
.into_boxed_slice
(
),
projection
:
self
.tcx
.intern_place_elems
(
&
projection
),
}
}
...
...
@@ -264,6 +284,10 @@ fn get_discr(&self, body: &mut Body<'tcx>) -> (Statement<'tcx>, Place<'tcx>) {
}
impl
MutVisitor
<
'tcx
>
for
TransformVisitor
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_local
(
&
mut
self
,
local
:
&
mut
Local
,
_
:
PlaceContext
,
...
...
@@ -280,7 +304,7 @@ fn visit_place(
if
let
PlaceBase
::
Local
(
l
)
=
place
.base
{
// Replace an Local in the remap with a generator struct access
if
let
Some
(
&
(
ty
,
variant_index
,
idx
))
=
self
.remap
.get
(
&
l
)
{
replace_base
(
place
,
self
.make_field
(
variant_index
,
idx
,
ty
));
replace_base
(
place
,
self
.make_field
(
variant_index
,
idx
,
ty
)
,
self
.tcx
);
}
}
else
{
self
.visit_place_base
(
&
mut
place
.base
,
context
,
location
);
...
...
@@ -375,7 +399,7 @@ fn make_generator_state_argument_indirect<'tcx>(
body
.local_decls.raw
[
1
]
.ty
=
ref_gen_ty
;
// Add a deref to accesses of the generator state
DerefArgVisitor
.visit_body
(
body
);
DerefArgVisitor
{
tcx
}
.visit_body
(
body
);
}
fn
make_generator_state_argument_pinned
<
'tcx
>
(
tcx
:
TyCtxt
<
'tcx
>
,
body
:
&
mut
Body
<
'tcx
>
)
{
...
...
@@ -390,12 +414,13 @@ fn make_generator_state_argument_pinned<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body
body
.local_decls.raw
[
1
]
.ty
=
pin_ref_gen_ty
;
// Add the Pin field access to accesses of the generator state
PinArgVisitor
{
ref_gen_ty
}
.visit_body
(
body
);
PinArgVisitor
{
ref_gen_ty
,
tcx
}
.visit_body
(
body
);
}
fn
replace_result_variable
<
'tcx
>
(
ret_ty
:
Ty
<
'tcx
>
,
body
:
&
mut
Body
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
,
)
->
Local
{
let
source_info
=
source_info
(
body
);
let
new_ret
=
LocalDecl
{
...
...
@@ -416,6 +441,7 @@ fn replace_result_variable<'tcx>(
RenameLocalVisitor
{
from
:
RETURN_PLACE
,
to
:
new_ret_local
,
tcx
,
}
.visit_body
(
body
);
new_ret_local
...
...
@@ -1182,7 +1208,7 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, source: MirSource<'tcx>, body: &mut Body<'
// We rename RETURN_PLACE which has type mir.return_ty to new_ret_local
// RETURN_PLACE then is a fresh unused local with type ret_ty.
let
new_ret_local
=
replace_result_variable
(
ret_ty
,
body
);
let
new_ret_local
=
replace_result_variable
(
ret_ty
,
body
,
tcx
);
// Extract locals which are live across suspension point into `layout`
// `remap` gives a mapping from local indices onto generator struct indices
...
...
src/librustc_mir/transform/inline.rs
浏览文件 @
d32c2865
...
...
@@ -461,7 +461,7 @@ fn dest_needs_borrow(place: &Place<'_>) -> bool {
};
caller_body
[
callsite
.bb
]
.statements
.push
(
stmt
);
tmp
.deref
()
tmp
.deref
(
self
.tcx
)
}
else
{
destination
.0
};
...
...
@@ -481,6 +481,7 @@ fn dest_needs_borrow(place: &Place<'_>) -> bool {
return_block
,
cleanup_block
:
cleanup
,
in_cleanup_block
:
false
,
tcx
:
self
.tcx
,
};
...
...
@@ -562,6 +563,7 @@ fn make_call_args(
let
tuple_field
=
Operand
::
Move
(
tuple
.clone
()
.field
(
Field
::
new
(
i
),
ty
.expect_ty
(),
tcx
,
));
// Spill to a local to make e.g., `tmp0`.
...
...
@@ -638,6 +640,7 @@ struct Integrator<'a, 'tcx> {
return_block
:
BasicBlock
,
cleanup_block
:
Option
<
BasicBlock
>
,
in_cleanup_block
:
bool
,
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
<
'a
,
'tcx
>
Integrator
<
'a
,
'tcx
>
{
...
...
@@ -665,6 +668,10 @@ fn make_integrate_local(&self, local: &Local) -> Local {
}
impl
<
'a
,
'tcx
>
MutVisitor
<
'tcx
>
for
Integrator
<
'a
,
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_local
(
&
mut
self
,
local
:
&
mut
Local
,
...
...
src/librustc_mir/transform/instcombine.rs
浏览文件 @
d32c2865
...
...
@@ -29,29 +29,32 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, _: MirSource<'tcx>, body: &mut Body<'tcx>)
};
// Then carry out those optimizations.
MutVisitor
::
visit_body
(
&
mut
InstCombineVisitor
{
optimizations
},
body
);
MutVisitor
::
visit_body
(
&
mut
InstCombineVisitor
{
optimizations
,
tcx
},
body
);
}
}
pub
struct
InstCombineVisitor
<
'tcx
>
{
optimizations
:
OptimizationList
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
InstCombineVisitor
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_rvalue
(
&
mut
self
,
rvalue
:
&
mut
Rvalue
<
'tcx
>
,
location
:
Location
)
{
if
self
.optimizations.and_stars
.remove
(
&
location
)
{
debug!
(
"replacing `&*`: {:?}"
,
rvalue
);
let
new_place
=
match
rvalue
{
Rvalue
::
Ref
(
_
,
_
,
place
)
=>
{
if
let
&
[
ref
proj_l
@
..
,
proj_r
]
=
place
.projection
.as_ref
()
{
let
new_projection
=
proj_l
.to_vec
()
.into_boxed_slice
();
place
.projection
=
vec!
[
proj_r
.clone
()]
.into_boxed_slice
();
place
.projection
=
self
.tcx
()
.intern_place_elems
(
&
vec!
[
proj_r
.clone
()]);
Place
{
// Replace with dummy
base
:
mem
::
replace
(
&
mut
place
.base
,
PlaceBase
::
Local
(
Local
::
new
(
0
))),
projection
:
new_projection
,
projection
:
self
.tcx
()
.intern_place_elems
(
proj_l
)
,
}
}
else
{
unreachable!
();
...
...
src/librustc_mir/transform/mod.rs
浏览文件 @
d32c2865
...
...
@@ -228,7 +228,7 @@ fn run_optimization_passes<'tcx>(
)
{
run_passes
(
tcx
,
body
,
InstanceDef
::
Item
(
def_id
),
promoted
,
MirPhase
::
Optimized
,
&
[
// Remove all things only needed by analysis
&
no_landing_pads
::
NoLandingPads
,
&
no_landing_pads
::
NoLandingPads
::
new
(
tcx
)
,
&
simplify_branches
::
SimplifyBranches
::
new
(
"initial"
),
&
remove_noop_landing_pads
::
RemoveNoopLandingPads
,
&
cleanup_post_borrowck
::
CleanupNonCodegenStatements
,
...
...
@@ -238,7 +238,7 @@ fn run_optimization_passes<'tcx>(
// These next passes must be executed together
&
add_call_guards
::
CriticalCallEdges
,
&
elaborate_drops
::
ElaborateDrops
,
&
no_landing_pads
::
NoLandingPads
,
&
no_landing_pads
::
NoLandingPads
::
new
(
tcx
)
,
// AddMovesForPackedDrops needs to run after drop
// elaboration.
&
add_moves_for_packed_drops
::
AddMovesForPackedDrops
,
...
...
@@ -257,7 +257,7 @@ fn run_optimization_passes<'tcx>(
// Optimizations begin.
&
uniform_array_move_out
::
RestoreSubsliceArrayMoveOut
,
&
uniform_array_move_out
::
RestoreSubsliceArrayMoveOut
::
new
(
tcx
)
,
&
inline
::
Inline
,
// Lowering generator control-flow and variables
...
...
src/librustc_mir/transform/no_landing_pads.rs
浏览文件 @
d32c2865
...
...
@@ -6,9 +6,17 @@
use
rustc
::
mir
::
visit
::
MutVisitor
;
use
crate
::
transform
::{
MirPass
,
MirSource
};
pub
struct
NoLandingPads
;
pub
struct
NoLandingPads
<
'tcx
>
{
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
<
'tcx
>
NoLandingPads
<
'tcx
>
{
pub
fn
new
(
tcx
:
TyCtxt
<
'tcx
>
)
->
Self
{
NoLandingPads
{
tcx
}
}
}
impl
<
'tcx
>
MirPass
<
'tcx
>
for
NoLandingPads
{
impl
<
'tcx
>
MirPass
<
'tcx
>
for
NoLandingPads
<
'tcx
>
{
fn
run_pass
(
&
self
,
tcx
:
TyCtxt
<
'tcx
>
,
_
:
MirSource
<
'tcx
>
,
body
:
&
mut
Body
<
'tcx
>
)
{
no_landing_pads
(
tcx
,
body
)
}
...
...
@@ -16,11 +24,15 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, _: MirSource<'tcx>, body: &mut Body<'tcx>)
pub
fn
no_landing_pads
<
'tcx
>
(
tcx
:
TyCtxt
<
'tcx
>
,
body
:
&
mut
Body
<
'tcx
>
)
{
if
tcx
.sess
.no_landing_pads
()
{
NoLandingPads
.visit_body
(
body
);
NoLandingPads
::
new
(
tcx
)
.visit_body
(
body
);
}
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
NoLandingPads
{
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
NoLandingPads
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_terminator_kind
(
&
mut
self
,
kind
:
&
mut
TerminatorKind
<
'tcx
>
,
location
:
Location
)
{
...
...
src/librustc_mir/transform/promote_consts.rs
浏览文件 @
d32c2865
...
...
@@ -17,7 +17,7 @@
use
rustc
::
mir
::
visit
::{
PlaceContext
,
MutatingUseContext
,
MutVisitor
,
Visitor
};
use
rustc
::
mir
::
traversal
::
ReversePostorder
;
use
rustc
::
ty
::
subst
::
InternalSubsts
;
use
rustc
::
ty
::
TyCtxt
;
use
rustc
::
ty
::
{
List
,
TyCtxt
}
;
use
syntax_pos
::
Span
;
use
rustc_index
::
vec
::{
IndexVec
,
Idx
};
...
...
@@ -321,7 +321,7 @@ fn promote_candidate(
ty
,
def_id
,
}),
projection
:
box
[]
,
projection
:
List
::
empty
()
,
}
};
let
(
blocks
,
local_decls
)
=
self
.source
.basic_blocks_and_local_decls_mut
();
...
...
@@ -339,7 +339,7 @@ fn promote_candidate(
&
mut
place
.base
,
promoted_place
(
ty
,
span
)
.base
,
),
projection
:
box
[]
,
projection
:
List
::
empty
()
,
})
}
_
=>
bug!
()
...
...
@@ -396,6 +396,10 @@ fn promote_candidate(
/// Replaces all temporaries with their promoted counterparts.
impl
<
'a
,
'tcx
>
MutVisitor
<
'tcx
>
for
Promoter
<
'a
,
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_local
(
&
mut
self
,
local
:
&
mut
Local
,
_
:
PlaceContext
,
...
...
src/librustc_mir/transform/simplify.rs
浏览文件 @
d32c2865
...
...
@@ -319,7 +319,7 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, source: MirSource<'tcx>, body: &mut Body<'
let
map
=
make_local_map
(
&
mut
body
.local_decls
,
locals
);
// Update references to all vars and tmps now
LocalUpdater
{
map
}
.visit_body
(
body
);
LocalUpdater
{
map
,
tcx
}
.visit_body
(
body
);
body
.local_decls
.shrink_to_fit
();
}
}
...
...
@@ -374,11 +374,16 @@ fn visit_local(&mut self, local: &Local, ctx: PlaceContext, location: Location)
}
}
struct
LocalUpdater
{
struct
LocalUpdater
<
'tcx
>
{
map
:
IndexVec
<
Local
,
Option
<
Local
>>
,
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
LocalUpdater
{
impl
<
'tcx
>
MutVisitor
<
'tcx
>
for
LocalUpdater
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_basic_block_data
(
&
mut
self
,
block
:
BasicBlock
,
data
:
&
mut
BasicBlockData
<
'tcx
>
)
{
// Remove unnecessary StorageLive and StorageDead annotations.
data
.statements
.retain
(|
stmt
|
{
...
...
src/librustc_mir/transform/uniform_array_move_out.rs
浏览文件 @
d32c2865
...
...
@@ -116,16 +116,13 @@ fn uniform(&mut self,
min_length
:
size
,
from_end
:
false
,
});
self
.patch
.add_assign
(
location
,
Place
::
from
(
temp
),
Rvalue
::
Use
(
Operand
::
Move
(
Place
{
base
:
base
.clone
(),
projection
:
projection
.into_boxed_slice
(),
}
)
)
self
.patch
.add_assign
(
location
,
Place
::
from
(
temp
),
Rvalue
::
Use
(
Operand
::
Move
(
Place
{
base
:
base
.clone
(),
projection
:
self
.tcx
.intern_place_elems
(
&
projection
),
})),
);
temp
})
.collect
();
...
...
@@ -153,16 +150,13 @@ fn uniform(&mut self,
min_length
:
size
,
from_end
:
false
,
});
self
.patch
.add_assign
(
location
,
dst_place
.clone
(),
Rvalue
::
Use
(
Operand
::
Move
(
Place
{
base
:
base
.clone
(),
projection
:
projection
.into_boxed_slice
(),
}
)
)
self
.patch
.add_assign
(
location
,
dst_place
.clone
(),
Rvalue
::
Use
(
Operand
::
Move
(
Place
{
base
:
base
.clone
(),
projection
:
self
.tcx
.intern_place_elems
(
&
projection
),
})),
);
}
_
=>
{}
...
...
@@ -185,9 +179,11 @@ fn uniform(&mut self,
//
// replaced by _10 = move _2[:-1];
pub
struct
RestoreSubsliceArrayMoveOut
;
pub
struct
RestoreSubsliceArrayMoveOut
<
'tcx
>
{
tcx
:
TyCtxt
<
'tcx
>
}
impl
<
'tcx
>
MirPass
<
'tcx
>
for
RestoreSubsliceArrayMoveOut
{
impl
<
'tcx
>
MirPass
<
'tcx
>
for
RestoreSubsliceArrayMoveOut
<
'tcx
>
{
fn
run_pass
(
&
self
,
tcx
:
TyCtxt
<
'tcx
>
,
src
:
MirSource
<
'tcx
>
,
body
:
&
mut
Body
<
'tcx
>
)
{
let
mut
patch
=
MirPatch
::
new
(
body
);
let
param_env
=
tcx
.param_env
(
src
.def_id
());
...
...
@@ -229,7 +225,9 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, src: MirSource<'tcx>, body: &mut Body<'tcx
None
}
});
Self
::
check_and_patch
(
*
candidate
,
&
items
,
opt_size
,
&
mut
patch
,
dst_place
);
let
restore_subslice
=
RestoreSubsliceArrayMoveOut
{
tcx
};
restore_subslice
.check_and_patch
(
*
candidate
,
&
items
,
opt_size
,
&
mut
patch
,
dst_place
);
}
}
}
...
...
@@ -238,15 +236,20 @@ fn run_pass(&self, tcx: TyCtxt<'tcx>, src: MirSource<'tcx>, body: &mut Body<'tcx
}
}
impl
RestoreSubsliceArrayMoveOut
{
impl
RestoreSubsliceArrayMoveOut
<
'tcx
>
{
pub
fn
new
(
tcx
:
TyCtxt
<
'tcx
>
)
->
Self
{
RestoreSubsliceArrayMoveOut
{
tcx
}
}
// Checks that source has size, all locals are inited from same source place and
// indices is an integer interval. If all checks pass do the replacent.
// items are Vec<Option<LocalUse, index in source array, source place for init local>>
fn
check_and_patch
<
'tcx
>
(
candidate
:
Location
,
items
:
&
[
Option
<
(
&
LocalUse
,
u32
,
PlaceRef
<
'_
,
'tcx
>
)
>
],
opt_size
:
Option
<
u64
>
,
patch
:
&
mut
MirPatch
<
'tcx
>
,
dst_place
:
&
Place
<
'tcx
>
)
{
fn
check_and_patch
(
&
self
,
candidate
:
Location
,
items
:
&
[
Option
<
(
&
LocalUse
,
u32
,
PlaceRef
<
'_
,
'tcx
>
)
>
],
opt_size
:
Option
<
u64
>
,
patch
:
&
mut
MirPatch
<
'tcx
>
,
dst_place
:
&
Place
<
'tcx
>
)
{
let
opt_src_place
=
items
.first
()
.and_then
(|
x
|
*
x
)
.map
(|
x
|
x
.2
);
if
opt_size
.is_some
()
&&
items
.iter
()
.all
(
...
...
@@ -279,14 +282,14 @@ fn check_and_patch<'tcx>(candidate: Location,
dst_place
.clone
(),
Rvalue
::
Use
(
Operand
::
Move
(
Place
{
base
:
src_place
.base
.clone
(),
projection
:
projection
.into_boxed_slice
(
),
projection
:
self
.tcx
.intern_place_elems
(
&
projection
),
})),
);
}
}
fn
try_get_item_source
<
'a
,
'tcx
>
(
local_use
:
&
LocalUse
,
body
:
&
'a
Body
<
'tcx
>
)
->
Option
<
(
u32
,
PlaceRef
<
'a
,
'tcx
>
)
>
{
fn
try_get_item_source
<
'a
>
(
local_use
:
&
LocalUse
,
body
:
&
'a
Body
<
'tcx
>
)
->
Option
<
(
u32
,
PlaceRef
<
'a
,
'tcx
>
)
>
{
if
let
Some
(
location
)
=
local_use
.first_use
{
let
block
=
&
body
[
location
.block
];
if
block
.statements
.len
()
>
location
.statement_index
{
...
...
src/librustc_mir/util/aggregate.rs
浏览文件 @
d32c2865
use
rustc
::
mir
::
*
;
use
rustc
::
ty
::
Ty
;
use
rustc
::
ty
::
{
Ty
,
TyCtxt
}
;
use
rustc
::
ty
::
layout
::
VariantIdx
;
use
rustc_index
::
vec
::
Idx
;
...
...
@@ -17,6 +17,7 @@ pub fn expand_aggregate<'tcx>(
operands
:
impl
Iterator
<
Item
=
(
Operand
<
'tcx
>
,
Ty
<
'tcx
>
)
>
+
TrustedLen
,
kind
:
AggregateKind
<
'tcx
>
,
source_info
:
SourceInfo
,
tcx
:
TyCtxt
<
'tcx
>
,
)
->
impl
Iterator
<
Item
=
Statement
<
'tcx
>>
+
TrustedLen
{
let
mut
set_discriminant
=
None
;
let
active_field_index
=
match
kind
{
...
...
@@ -29,7 +30,7 @@ pub fn expand_aggregate<'tcx>(
},
source_info
,
});
lhs
=
lhs
.downcast
(
adt_def
,
variant_index
);
lhs
=
lhs
.downcast
(
adt_def
,
variant_index
,
tcx
);
}
active_field_index
}
...
...
@@ -63,10 +64,10 @@ pub fn expand_aggregate<'tcx>(
// FIXME(eddyb) `min_length` doesn't appear to be used.
min_length
:
offset
+
1
,
from_end
:
false
})
}
,
tcx
)
}
else
{
let
field
=
Field
::
new
(
active_field_index
.unwrap_or
(
i
));
lhs
.clone
()
.field
(
field
,
ty
)
lhs
.clone
()
.field
(
field
,
ty
,
tcx
)
};
Statement
{
source_info
,
...
...
src/librustc_mir/util/def_use.rs
浏览文件 @
d32c2865
...
...
@@ -2,6 +2,7 @@
use
rustc
::
mir
::{
Body
,
Local
,
Location
,
PlaceElem
};
use
rustc
::
mir
::
visit
::{
PlaceContext
,
MutVisitor
,
Visitor
};
use
rustc
::
ty
::
TyCtxt
;
use
rustc_index
::
vec
::
IndexVec
;
use
std
::
mem
;
...
...
@@ -47,20 +48,26 @@ pub fn local_info(&self, local: Local) -> &Info {
&
self
.info
[
local
]
}
fn
mutate_defs_and_uses
(
&
self
,
local
:
Local
,
body
:
&
mut
Body
<
'_
>
,
new_local
:
Local
)
{
fn
mutate_defs_and_uses
(
&
self
,
local
:
Local
,
body
:
&
mut
Body
<
'tcx
>
,
new_local
:
Local
,
tcx
:
TyCtxt
<
'tcx
>
,
)
{
for
place_use
in
&
self
.info
[
local
]
.defs_and_uses
{
MutateUseVisitor
::
new
(
local
,
new_local
,
body
)
.visit_location
(
body
,
place_use
.location
)
MutateUseVisitor
::
new
(
local
,
new_local
,
body
,
tcx
)
.visit_location
(
body
,
place_use
.location
)
}
}
// FIXME(pcwalton): this should update the def-use chains.
pub
fn
replace_all_defs_and_uses_with
(
&
self
,
local
:
Local
,
body
:
&
mut
Body
<
'_
>
,
new_local
:
Local
)
{
self
.mutate_defs_and_uses
(
local
,
body
,
new_local
)
body
:
&
mut
Body
<
'tcx
>
,
new_local
:
Local
,
tcx
:
TyCtxt
<
'tcx
>
)
{
self
.mutate_defs_and_uses
(
local
,
body
,
new_local
,
tcx
)
}
}
...
...
@@ -114,21 +121,28 @@ pub fn use_count(&self) -> usize {
}
}
struct
MutateUseVisitor
{
struct
MutateUseVisitor
<
'tcx
>
{
query
:
Local
,
new_local
:
Local
,
tcx
:
TyCtxt
<
'tcx
>
,
}
impl
MutateUseVisitor
{
fn
new
(
query
:
Local
,
new_local
:
Local
,
_
:
&
Body
<
'_
>
)
->
MutateUseVisitor
{
MutateUseVisitor
{
query
,
new_local
,
}
impl
MutateUseVisitor
<
'tcx
>
{
fn
new
(
query
:
Local
,
new_local
:
Local
,
_
:
&
Body
<
'tcx
>
,
tcx
:
TyCtxt
<
'tcx
>
,
)
->
MutateUseVisitor
<
'tcx
>
{
MutateUseVisitor
{
query
,
new_local
,
tcx
}
}
}
impl
MutVisitor
<
'_
>
for
MutateUseVisitor
{
impl
MutVisitor
<
'tcx
>
for
MutateUseVisitor
<
'tcx
>
{
fn
tcx
(
&
self
)
->
TyCtxt
<
'tcx
>
{
self
.tcx
}
fn
visit_local
(
&
mut
self
,
local
:
&
mut
Local
,
_
context
:
PlaceContext
,
...
...
src/librustc_mir/util/elaborate_drops.rs
浏览文件 @
d32c2865
...
...
@@ -206,7 +206,7 @@ fn move_paths_for_fields(&self,
self
.elaborator
.param_env
(),
f
.ty
(
self
.tcx
(),
substs
),
);
(
base_place
.clone
()
.field
(
field
,
field_ty
),
subpath
)
(
base_place
.clone
()
.field
(
field
,
field_ty
,
self
.tcx
()
),
subpath
)
})
.collect
()
}
...
...
@@ -323,7 +323,7 @@ fn open_drop_for_tuple(&mut self, tys: &[Ty<'tcx>]) -> BasicBlock {
debug!
(
"open_drop_for_tuple({:?}, {:?})"
,
self
,
tys
);
let
fields
=
tys
.iter
()
.enumerate
()
.map
(|(
i
,
&
ty
)|
{
(
self
.place
.clone
()
.field
(
Field
::
new
(
i
),
ty
),
(
self
.place
.clone
()
.field
(
Field
::
new
(
i
),
ty
,
self
.tcx
()
),
self
.elaborator
.field_subpath
(
self
.path
,
Field
::
new
(
i
)))
})
.collect
();
...
...
@@ -334,7 +334,7 @@ fn open_drop_for_tuple(&mut self, tys: &[Ty<'tcx>]) -> BasicBlock {
fn
open_drop_for_box
(
&
mut
self
,
adt
:
&
'tcx
ty
::
AdtDef
,
substs
:
SubstsRef
<
'tcx
>
)
->
BasicBlock
{
debug!
(
"open_drop_for_box({:?}, {:?}, {:?})"
,
self
,
adt
,
substs
);
let
interior
=
self
.place
.clone
()
.deref
();
let
interior
=
self
.place
.clone
()
.deref
(
self
.tcx
()
);
let
interior_path
=
self
.elaborator
.deref_subpath
(
self
.path
);
let
succ
=
self
.succ
;
// FIXME(#43234)
...
...
@@ -413,7 +413,7 @@ fn open_drop_for_multivariant(&mut self, adt: &'tcx ty::AdtDef,
if
let
Some
(
variant_path
)
=
subpath
{
let
base_place
=
self
.place
.clone
()
.elem
(
ProjectionElem
::
Downcast
(
Some
(
adt
.variants
[
variant_index
]
.ident.name
),
variant_index
));
variant_index
)
,
self
.tcx
()
);
let
fields
=
self
.move_paths_for_fields
(
&
base_place
,
variant_path
,
...
...
@@ -586,7 +586,7 @@ fn drop_loop(
BorrowKind
::
Mut
{
allow_two_phase_borrow
:
false
},
Place
{
base
:
PlaceBase
::
Local
(
cur
),
projection
:
Box
::
new
(
[
ProjectionElem
::
Deref
]),
projection
:
self
.tcx
()
.intern_place_elems
(
&
vec!
[
ProjectionElem
::
Deref
]),
}
),
Rvalue
::
BinaryOp
(
BinOp
::
Offset
,
move_
(
&
Place
::
from
(
cur
)),
one
))
...
...
@@ -594,7 +594,7 @@ fn drop_loop(
(
Rvalue
::
Ref
(
tcx
.lifetimes.re_erased
,
BorrowKind
::
Mut
{
allow_two_phase_borrow
:
false
},
self
.place
.clone
()
.index
(
cur
)),
self
.place
.clone
()
.index
(
cur
,
self
.tcx
()
)),
Rvalue
::
BinaryOp
(
BinOp
::
Add
,
move_
(
&
Place
::
from
(
cur
)),
one
))
};
...
...
@@ -627,7 +627,7 @@ fn drop_loop(
let
loop_block
=
self
.elaborator
.patch
()
.new_block
(
loop_block
);
self
.elaborator
.patch
()
.patch_terminator
(
drop_block
,
TerminatorKind
::
Drop
{
location
:
ptr
.clone
()
.deref
(),
location
:
ptr
.clone
()
.deref
(
tcx
),
target
:
loop_block
,
unwind
:
unwind
.into_option
()
});
...
...
@@ -653,7 +653,7 @@ fn open_drop_for_array(&mut self, ety: Ty<'tcx>, opt_size: Option<u64>) -> Basic
offset
:
i
,
min_length
:
size
,
from_end
:
false
}),
}
,
self
.tcx
()
),
self
.elaborator
.array_subpath
(
self
.path
,
i
,
size
))
})
.collect
();
...
...
@@ -901,7 +901,7 @@ fn unelaborated_free_block(
let
args
=
adt
.variants
[
VariantIdx
::
new
(
0
)]
.fields
.iter
()
.enumerate
()
.map
(|(
i
,
f
)|
{
let
field
=
Field
::
new
(
i
);
let
field_ty
=
f
.ty
(
self
.tcx
(),
substs
);
Operand
::
Move
(
self
.place
.clone
()
.field
(
field
,
field_ty
))
Operand
::
Move
(
self
.place
.clone
()
.field
(
field
,
field_ty
,
self
.tcx
()
))
})
.collect
();
let
call
=
TerminatorKind
::
Call
{
...
...
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