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体验新版 GitCode,发现更多精彩内容 >>
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032be94d
编写于
4月 10, 2020
作者:
D
Dylan MacKenzie
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差异文件
Rename `live_locals` -> `live_locals_at_any_suspension_point`
上级
d0086166
变更
1
隐藏空白更改
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Showing
1 changed file
with
12 addition
and
11 deletion
+12
-11
src/librustc_mir/transform/generator.rs
src/librustc_mir/transform/generator.rs
+12
-11
未找到文件。
src/librustc_mir/transform/generator.rs
浏览文件 @
032be94d
...
...
@@ -467,12 +467,13 @@ fn locals_live_across_suspend_points(
dataflow
::
ResultsCursor
::
new
(
body_ref
,
&
requires_storage_results
);
// Calculate the liveness of MIR locals ignoring borrows.
let
mut
live_locals
=
liveness
::
LiveVarSet
::
new_empty
(
body
.local_decls
.len
());
let
mut
liveness
=
liveness
::
liveness_of_locals
(
body
);
liveness
::
dump_mir
(
tcx
,
"generator_liveness"
,
source
,
body_ref
,
&
liveness
);
let
mut
storage_liveness_map
=
IndexVec
::
from_elem
(
None
,
body
.basic_blocks
());
let
mut
live_locals_at_suspension_points
=
Vec
::
new
();
let
mut
live_locals_at_any_suspension_point
=
liveness
::
LiveVarSet
::
new_empty
(
body
.local_decls
.len
());
for
(
block
,
data
)
in
body
.basic_blocks
()
.iter_enumerated
()
{
if
let
TerminatorKind
::
Yield
{
..
}
=
data
.terminator
()
.kind
{
...
...
@@ -509,39 +510,39 @@ fn locals_live_across_suspend_points(
// Locals live are live at this point only if they are used across
// suspension points (the `liveness` variable)
// and their storage is required (the `storage_required` variable)
let
mut
live_locals
_here
=
storage_required
;
live_locals
_here
.intersect
(
&
liveness
.outs
[
block
]);
let
mut
live_locals
=
storage_required
;
live_locals
.intersect
(
&
liveness
.outs
[
block
]);
// The generator argument is ignored.
live_locals
_here
.remove
(
SELF_ARG
);
live_locals
.remove
(
SELF_ARG
);
debug!
(
"loc = {:?}, live_locals
_here = {:?}"
,
loc
,
live_locals_here
);
debug!
(
"loc = {:?}, live_locals
= {:?}"
,
loc
,
live_locals
);
// Add the locals live at this suspension point to the set of locals which live across
// any suspension points
live_locals
.union
(
&
live_locals_here
);
live_locals
_at_any_suspension_point
.union
(
&
live_locals
);
live_locals_at_suspension_points
.push
(
live_locals
_here
);
live_locals_at_suspension_points
.push
(
live_locals
);
}
}
debug!
(
"live_locals
= {:?}"
,
live_locals
);
debug!
(
"live_locals
_anywhere = {:?}"
,
live_locals_at_any_suspension_point
);
// Renumber our liveness_map bitsets to include only the locals we are
// saving.
let
live_locals_at_suspension_points
=
live_locals_at_suspension_points
.iter
()
.map
(|
live_here
|
renumber_bitset
(
&
live_here
,
&
live_locals
))
.map
(|
live_here
|
renumber_bitset
(
&
live_here
,
&
live_locals
_at_any_suspension_point
))
.collect
();
let
storage_conflicts
=
compute_storage_conflicts
(
body_ref
,
&
live_locals
,
&
live_locals
_at_any_suspension_point
,
always_live_locals
.clone
(),
requires_storage_results
,
);
LivenessInfo
{
live_locals
,
live_locals
:
live_locals_at_any_suspension_point
,
live_locals_at_suspension_points
,
storage_conflicts
,
storage_liveness
:
storage_liveness_map
,
...
...
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