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8640e67e
编写于
9月 17, 2011
作者:
T
Tim Chevalier
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Add a precondition to GEP_tup_like
上级
2b98eccf
变更
3
显示空白变更内容
内联
并排
Showing
3 changed file
with
73 addition
and
4 deletion
+73
-4
src/comp/middle/trans.rs
src/comp/middle/trans.rs
+49
-4
src/comp/middle/trans_alt.rs
src/comp/middle/trans_alt.rs
+8
-0
src/comp/middle/trans_objects.rs
src/comp/middle/trans_objects.rs
+16
-0
未找到文件。
src/comp/middle/trans.rs
浏览文件 @
8640e67e
...
...
@@ -610,6 +610,8 @@ fn align_elements(cx: @block_ctxt, elts: [ty::t]) -> result {
}
fn
dynamic_align_of
(
cx
:
@
block_ctxt
,
t
:
ty
::
t
)
->
result
{
// FIXME: Typestate constraint that shows this alt is
// exhaustive
alt
ty
::
struct
(
bcx_tcx
(
cx
),
t
)
{
ty
::
ty_param
(
p
,
_
)
{
let
aptr
=
field_of_tydesc
(
cx
,
t
,
false
,
abi
::
tydesc_field_align
);
...
...
@@ -668,9 +670,8 @@ fn bump_ptr(bcx: @block_ctxt, t: ty::t, base: ValueRef, sz: ValueRef) ->
// ty::struct and knows what to do when it runs into a ty_param stuck in the
// middle of the thing it's GEP'ing into. Much like size_of and align_of,
// above.
fn
GEP_tup_like
(
cx
:
@
block_ctxt
,
t
:
ty
::
t
,
base
:
ValueRef
,
ixs
:
[
int
])
->
result
{
assert
(
ty
::
type_is_tup_like
(
bcx_tcx
(
cx
),
t
));
fn
GEP_tup_like
(
cx
:
@
block_ctxt
,
t
:
ty
::
t
,
base
:
ValueRef
,
ixs
:
[
int
])
:
type_is_tup_like
(
cx
,
t
)
->
result
{
// It might be a static-known type. Handle this.
if
!
ty
::
type_has_dynamic_size
(
bcx_tcx
(
cx
),
t
)
{
ret
rslt
(
cx
,
GEPi
(
cx
,
base
,
ixs
));
...
...
@@ -785,6 +786,8 @@ fn GEP_tag(cx: @block_ctxt, llblobptr: ValueRef, tag_id: ast::def_id,
}
else
{
llunionptr
=
llblobptr
;
}
// Do the GEP_tup_like().
// Silly check -- postcondition on mk_tup?
check
type_is_tup_like
(
cx
,
tup_ty
);
let
rs
=
GEP_tup_like
(
cx
,
tup_ty
,
llunionptr
,
[
0
,
ix
as
int
]);
// Cast the result to the appropriate type, if necessary.
...
...
@@ -1403,12 +1406,15 @@ fn trans_res_drop(cx: @block_ctxt, rs: ValueRef, did: ast::def_id,
let
drop_cx
=
new_sub_block_ctxt
(
cx
,
"drop res"
);
let
next_cx
=
new_sub_block_ctxt
(
cx
,
"next"
);
// Silly check
check
type_is_tup_like
(
cx
,
tup_ty
);
let
drop_flag
=
GEP_tup_like
(
cx
,
tup_ty
,
rs
,
[
0
,
0
]);
cx
=
drop_flag
.bcx
;
let
null_test
=
IsNull
(
cx
,
Load
(
cx
,
drop_flag
.val
));
CondBr
(
cx
,
null_test
,
next_cx
.llbb
,
drop_cx
.llbb
);
cx
=
drop_cx
;
check
type_is_tup_like
(
cx
,
tup_ty
);
let
val
=
GEP_tup_like
(
cx
,
tup_ty
,
rs
,
[
0
,
1
]);
cx
=
val
.bcx
;
// Find and call the actual destructor.
...
...
@@ -1641,10 +1647,15 @@ fn iter_variant(cx: @block_ctxt, a_tup: ValueRef,
ret
cx
;
}
/*
Typestate constraint that shows the unimpl case doesn't happen?
*/
alt
ty
::
struct
(
bcx_tcx
(
cx
),
t
)
{
ty
::
ty_rec
(
fields
)
{
let
i
:
int
=
0
;
for
fld
:
ty
::
field
in
fields
{
// Silly check
check
type_is_tup_like
(
cx
,
t
);
let
{
bcx
:
bcx
,
val
:
llfld_a
}
=
GEP_tup_like
(
cx
,
t
,
av
,
[
0
,
i
]);
cx
=
f
(
bcx
,
llfld_a
,
fld
.mt.ty
);
i
+=
1
;
...
...
@@ -1653,6 +1664,8 @@ fn iter_variant(cx: @block_ctxt, a_tup: ValueRef,
ty
::
ty_tup
(
args
)
{
let
i
=
0
;
for
arg
in
args
{
// Silly check
check
type_is_tup_like
(
cx
,
t
);
let
{
bcx
:
bcx
,
val
:
llfld_a
}
=
GEP_tup_like
(
cx
,
t
,
av
,
[
0
,
i
]);
cx
=
f
(
bcx
,
llfld_a
,
arg
);
i
+=
1
;
...
...
@@ -1663,6 +1676,8 @@ fn iter_variant(cx: @block_ctxt, a_tup: ValueRef,
let
inner1
=
ty
::
substitute_type_params
(
tcx
,
tps
,
inner
);
let
inner_t_s
=
ty
::
substitute_type_params
(
tcx
,
tps
,
inner
);
let
tup_t
=
ty
::
mk_tup
(
tcx
,
[
ty
::
mk_int
(
tcx
),
inner_t_s
]);
// Silly check
check
type_is_tup_like
(
cx
,
tup_t
);
let
{
bcx
:
bcx
,
val
:
llfld_a
}
=
GEP_tup_like
(
cx
,
tup_t
,
av
,
[
0
,
1
]);
ret
f
(
bcx
,
llfld_a
,
inner1
);
}
...
...
@@ -2543,11 +2558,15 @@ fn build_environment(bcx: @block_ctxt, lltydescs: [ValueRef],
// Copy expr values into boxed bindings.
let
i
=
0u
;
// Silly check
check
type_is_tup_like
(
bcx
,
closure_ty
);
let
bindings
=
GEP_tup_like
(
bcx
,
closure_ty
,
closure
,
[
0
,
abi
::
closure_elt_bindings
]);
bcx
=
bindings
.bcx
;
for
lv
:
lval_result
in
bound_vals
{
// Also a silly check
check
type_is_tup_like
(
bcx
,
bindings_ty
);
let
bound
=
GEP_tup_like
(
bcx
,
bindings_ty
,
bindings
.val
,
[
0
,
i
as
int
]);
bcx
=
bound
.bcx
;
...
...
@@ -2559,6 +2578,8 @@ fn build_environment(bcx: @block_ctxt, lltydescs: [ValueRef],
// If necessary, copy tydescs describing type parameters into the
// appropriate slot in the closure.
// Silly check as well
check
type_is_tup_like
(
bcx
,
closure_ty
);
let
ty_params_slot
=
GEP_tup_like
(
bcx
,
closure_ty
,
closure
,
[
0
,
abi
::
closure_elt_ty_params
]);
...
...
@@ -2663,6 +2684,8 @@ fn load_environment(enclosing_cx: @block_ctxt, fcx: @fn_ctxt, envty: ty::t,
// If this is an aliasing closure/for-each body, we need to load
// the iterbody.
if
!
copying
&&
!
option
::
is_none
(
enclosing_cx
.fcx.lliterbody
)
{
// Silly check
check
type_is_tup_like
(
bcx
,
ty
);
let
iterbodyptr
=
GEP_tup_like
(
bcx
,
ty
,
llclosure
,
path
+
[
0
]);
fcx
.lliterbody
=
some
(
Load
(
bcx
,
iterbodyptr
.val
));
bcx
=
iterbodyptr
.bcx
;
...
...
@@ -2671,6 +2694,8 @@ fn load_environment(enclosing_cx: @block_ctxt, fcx: @fn_ctxt, envty: ty::t,
// Load the actual upvars.
for
upvar_def
in
*
upvars
{
// Silly check
check
type_is_tup_like
(
bcx
,
ty
);
let
upvarptr
=
GEP_tup_like
(
bcx
,
ty
,
llclosure
,
path
+
[
i
as
int
]);
bcx
=
upvarptr
.bcx
;
let
llupvarptr
=
upvarptr
.val
;
...
...
@@ -2984,7 +3009,10 @@ fn trans_field_inner(cx: @block_ctxt, sp: span, v: ValueRef, t0: ty::t,
alt
ty
::
struct
(
bcx_tcx
(
cx
),
t
)
{
ty
::
ty_rec
(
fields
)
{
let
ix
:
uint
=
ty
::
field_idx
(
bcx_ccx
(
cx
)
.sess
,
sp
,
field
,
fields
);
let
v
=
GEP_tup_like
(
r
.bcx
,
t
,
r
.val
,
[
0
,
ix
as
int
]);
let
r_bcx
=
r
.bcx
;
// Silly check
check
type_is_tup_like
(
r_bcx
,
t
);
let
v
=
GEP_tup_like
(
r_bcx
,
t
,
r
.val
,
[
0
,
ix
as
int
]);
ret
lval_no_env
(
v
.bcx
,
v
.val
,
true
);
}
ty
::
ty_obj
(
methods
)
{
...
...
@@ -3329,6 +3357,8 @@ fn trans_bind_thunk(cx: @local_ctxt, sp: span, incoming_fty: ty::t,
(
fptr
,
C_null
(
T_opaque_closure_ptr
(
*
bcx_ccx
(
bcx
))),
0
)
}
none
.
{
// Silly check
check
type_is_tup_like
(
bcx
,
closure_ty
);
let
{
bcx
:
cx
,
val
:
pair
}
=
GEP_tup_like
(
bcx
,
closure_ty
,
llclosure
,
[
0
,
abi
::
box_rc_field_body
,
...
...
@@ -3368,6 +3398,8 @@ fn trans_bind_thunk(cx: @local_ctxt, sp: span, incoming_fty: ty::t,
// Copy in the type parameters.
let
i
:
uint
=
0u
;
while
i
<
ty_param_count
{
// Silly check
check
type_is_tup_like
(
copy_args_bcx
,
closure_ty
);
let
lltyparam_ptr
=
GEP_tup_like
(
copy_args_bcx
,
closure_ty
,
llclosure
,
[
0
,
abi
::
box_rc_field_body
,
...
...
@@ -3391,6 +3423,8 @@ fn trans_bind_thunk(cx: @local_ctxt, sp: span, incoming_fty: ty::t,
// Arg provided at binding time; thunk copies it from
// closure.
some
(
e
)
{
// Silly check
check
type_is_tup_like
(
bcx
,
closure_ty
);
let
bound_arg
=
GEP_tup_like
(
bcx
,
closure_ty
,
llclosure
,
[
0
,
abi
::
box_rc_field_body
,
...
...
@@ -3914,6 +3948,8 @@ fn trans_tup(cx: @block_ctxt, elts: [@ast::expr], id: ast::node_id) ->
let
e_ty
=
ty
::
expr_ty
(
cx
.fcx.lcx.ccx.tcx
,
e
);
let
src
=
trans_lval
(
bcx
,
e
);
bcx
=
src
.bcx
;
// FIXME: constraint on argument?
check
type_is_tup_like
(
bcx
,
t
);
let
dst_res
=
GEP_tup_like
(
bcx
,
t
,
tup_val
,
[
0
,
i
]);
bcx
=
move_val_if_temp
(
dst_res
.bcx
,
INIT
,
dst_res
.val
,
src
,
e_ty
);
i
+=
1
;
...
...
@@ -3943,6 +3979,8 @@ fn trans_rec(cx: @block_ctxt, fields: [ast::field],
alt
ty
::
struct
(
bcx_tcx
(
cx
),
t
)
{
ty
::
ty_rec
(
flds
)
{
ty_fields
=
flds
;
}
}
for
tf
:
ty
::
field
in
ty_fields
{
let
e_ty
=
tf
.mt.ty
;
// FIXME: constraint on argument?
check
type_is_tup_like
(
bcx
,
t
);
let
dst_res
=
GEP_tup_like
(
bcx
,
t
,
rec_val
,
[
0
,
i
]);
bcx
=
dst_res
.bcx
;
let
expr_provided
=
false
;
...
...
@@ -3956,6 +3994,8 @@ fn trans_rec(cx: @block_ctxt, fields: [ast::field],
}
}
if
!
expr_provided
{
// FIXME: constraint on argument?
check
type_is_tup_like
(
bcx
,
t
);
let
src_res
=
GEP_tup_like
(
bcx
,
t
,
base_val
,
[
0
,
i
]);
src_res
=
rslt
(
src_res
.bcx
,
load_if_immediate
(
bcx
,
src_res
.val
,
e_ty
));
...
...
@@ -5100,6 +5140,8 @@ fn populate_fn_ctxt_from_llself(fcx: @fn_ctxt, llself: val_self_pair) {
}
i
=
0
;
for
f
:
ast
::
obj_field
in
fcx
.lcx.obj_fields
{
// FIXME: silly check
check
type_is_tup_like
(
bcx
,
fields_tup_ty
);
let
rslt
=
GEP_tup_like
(
bcx
,
fields_tup_ty
,
obj_fields
,
[
0
,
i
]);
bcx
=
llstaticallocas_block_ctxt
(
fcx
);
let
llfield
=
rslt
.val
;
...
...
@@ -5248,9 +5290,12 @@ fn trans_res_ctor(cx: @local_ctxt, sp: span, dtor: ast::_fn,
llretptr
=
BitCast
(
bcx
,
llretptr
,
llret_t
);
}
// FIXME: silly checks
check
type_is_tup_like
(
bcx
,
tup_t
);
let
dst
=
GEP_tup_like
(
bcx
,
tup_t
,
llretptr
,
[
0
,
1
]);
bcx
=
dst
.bcx
;
bcx
=
copy_val
(
bcx
,
INIT
,
dst
.val
,
arg
,
arg_t
);
check
type_is_tup_like
(
bcx
,
tup_t
);
let
flag
=
GEP_tup_like
(
bcx
,
tup_t
,
llretptr
,
[
0
,
0
]);
bcx
=
flag
.bcx
;
Store
(
bcx
,
C_int
(
1
),
flag
.val
);
...
...
src/comp/middle/trans_alt.rs
浏览文件 @
8640e67e
...
...
@@ -342,6 +342,8 @@ fn compile_submatch(bcx: @block_ctxt, m: match, vals: [ValueRef], f: mk_fail,
for
field_name
:
ast
::
ident
in
rec_fields
{
let
ix
:
uint
=
ty
::
field_idx
(
ccx
.sess
,
dummy_sp
(),
field_name
,
fields
);
// not sure how to get rid of this check
check
type_is_tup_like
(
bcx
,
rec_ty
);
let
r
=
trans
::
GEP_tup_like
(
bcx
,
rec_ty
,
val
,
[
0
,
ix
as
int
]);
rec_vals
+=
[
r
.val
];
bcx
=
r
.bcx
;
...
...
@@ -359,6 +361,8 @@ fn compile_submatch(bcx: @block_ctxt, m: match, vals: [ValueRef], f: mk_fail,
};
let
tup_vals
=
[],
i
=
0u
;
while
i
<
n_tup_elts
{
// how to get rid of this check?
check
type_is_tup_like
(
bcx
,
tup_ty
);
let
r
=
trans
::
GEP_tup_like
(
bcx
,
tup_ty
,
val
,
[
0
,
i
as
int
]);
tup_vals
+=
[
r
.val
];
bcx
=
r
.bcx
;
...
...
@@ -603,6 +607,8 @@ fn bind_irrefutable_pat(bcx: @block_ctxt, pat: @ast::pat, val: ValueRef,
for
f
:
ast
::
field_pat
in
fields
{
let
ix
:
uint
=
ty
::
field_idx
(
ccx
.sess
,
pat
.span
,
f
.ident
,
rec_fields
);
// how to get rid of this check?
check
type_is_tup_like
(
bcx
,
rec_ty
);
let
r
=
trans
::
GEP_tup_like
(
bcx
,
rec_ty
,
val
,
[
0
,
ix
as
int
]);
bcx
=
bind_irrefutable_pat
(
r
.bcx
,
f
.pat
,
r
.val
,
table
,
make_copy
);
}
...
...
@@ -611,6 +617,8 @@ fn bind_irrefutable_pat(bcx: @block_ctxt, pat: @ast::pat, val: ValueRef,
let
tup_ty
=
ty
::
node_id_to_monotype
(
ccx
.tcx
,
pat
.id
);
let
i
=
0u
;
for
elem
in
elems
{
// how to get rid of this check?
check
type_is_tup_like
(
bcx
,
tup_ty
);
let
r
=
trans
::
GEP_tup_like
(
bcx
,
tup_ty
,
val
,
[
0
,
i
as
int
]);
bcx
=
bind_irrefutable_pat
(
r
.bcx
,
elem
,
r
.val
,
table
,
make_copy
);
i
+=
1u
;
...
...
src/comp/middle/trans_objects.rs
浏览文件 @
8640e67e
...
...
@@ -121,11 +121,14 @@ fn trans_obj(cx: @local_ctxt, sp: span, ob: ast::_obj, ctor_id: ast::node_id,
// the types of the object's fields, so that the fields can be freed
// later.
// postcondition on create_object_body_type?
check
type_is_tup_like
(
bcx
,
body_ty
);
let
body_tydesc
=
GEP_tup_like
(
bcx
,
body_ty
,
body
,
[
0
,
abi
::
obj_body_elt_tydesc
]);
bcx
=
body_tydesc
.bcx
;
let
ti
=
none
;
check
type_is_tup_like
(
bcx
,
body_ty
);
let
r
=
GEP_tup_like
(
bcx
,
body_ty
,
body
,
[
0
,
abi
::
obj_body_elt_typarams
]);
bcx
=
r
.bcx
;
...
...
@@ -151,6 +154,8 @@ fn trans_obj(cx: @local_ctxt, sp: span, ob: ast::_obj, ctor_id: ast::node_id,
let
i
:
int
=
0
;
for
tp
:
ast
::
ty_param
in
ty_params
{
let
typaram
=
bcx
.fcx.lltydescs
[
i
];
// Silly check
check
type_is_tup_like
(
bcx
,
typarams_ty
);
let
capture
=
GEP_tup_like
(
bcx
,
typarams_ty
,
body_typarams
,
[
0
,
i
]);
bcx
=
capture
.bcx
;
...
...
@@ -159,6 +164,8 @@ fn trans_obj(cx: @local_ctxt, sp: span, ob: ast::_obj, ctor_id: ast::node_id,
}
// Copy args into body fields.
// how to get rid of this check?
check
type_is_tup_like
(
bcx
,
body_ty
);
let
body_fields
=
GEP_tup_like
(
bcx
,
body_ty
,
body
,
[
0
,
abi
::
obj_body_elt_fields
]);
bcx
=
body_fields
.bcx
;
...
...
@@ -169,6 +176,8 @@ fn trans_obj(cx: @local_ctxt, sp: span, ob: ast::_obj, ctor_id: ast::node_id,
let
arg
=
load_if_immediate
(
bcx
,
arg1
,
arg_tys
[
i
]
.ty
);
// TODO: can we just get fields_ty out of body_ty instead?
let
fields_ty
:
ty
::
t
=
ty
::
mk_tup
(
ccx
.tcx
,
obj_fields
);
// Silly check
check
type_is_tup_like
(
bcx
,
fields_ty
);
let
field
=
GEP_tup_like
(
bcx
,
fields_ty
,
body_fields
.val
,
[
0
,
i
]);
bcx
=
field
.bcx
;
...
...
@@ -314,6 +323,8 @@ fn trans_anon_obj(bcx: @block_ctxt, sp: span, anon_obj: ast::anon_obj,
// the user of the object. So the tydesc is needed to keep track of
// the types of the object's fields, so that the fields can be freed
// later.
// postcondition on create_object_body_type?
check
type_is_tup_like
(
bcx
,
body_ty
);
let
body_tydesc
=
GEP_tup_like
(
bcx
,
body_ty
,
body
,
[
0
,
abi
::
obj_body_elt_tydesc
]);
bcx
=
body_tydesc
.bcx
;
...
...
@@ -328,6 +339,7 @@ fn trans_anon_obj(bcx: @block_ctxt, sp: span, anon_obj: ast::anon_obj,
// body. (This is something like saving the lexical environment of a
// function in its closure: the fields were passed to the object
// constructor and are now available to the object's methods.
check
type_is_tup_like
(
bcx
,
body_ty
);
let
body_fields
=
GEP_tup_like
(
bcx
,
body_ty
,
body
,
[
0
,
abi
::
obj_body_elt_fields
]);
bcx
=
body_fields
.bcx
;
...
...
@@ -338,6 +350,8 @@ fn trans_anon_obj(bcx: @block_ctxt, sp: span, anon_obj: ast::anon_obj,
load_if_immediate
(
bcx
,
additional_field_vals
[
i
]
.val
,
additional_field_tys
[
i
]);
let
fields_ty
:
ty
::
t
=
ty
::
mk_tup
(
ccx
.tcx
,
additional_field_tys
);
// Silly check
check
type_is_tup_like
(
bcx
,
fields_ty
);
let
field
=
GEP_tup_like
(
bcx
,
fields_ty
,
body_fields
.val
,
[
0
,
i
]);
bcx
=
field
.bcx
;
bcx
=
...
...
@@ -356,6 +370,7 @@ fn trans_anon_obj(bcx: @block_ctxt, sp: span, anon_obj: ast::anon_obj,
// value) wrapped in a result.
let
inner_obj_val
:
result
=
trans_expr
(
bcx
,
e
);
check
type_is_tup_like
(
bcx
,
body_ty
);
let
body_inner_obj
=
GEP_tup_like
(
bcx
,
body_ty
,
body
,
[
0
,
abi
::
obj_body_elt_inner_obj
]);
...
...
@@ -776,6 +791,7 @@ fn process_fwding_mthd(cx: @local_ctxt, sp: span, m: @ty::method,
T_ptr
(
type_of
(
cx_ccx
,
sp
,
body_ty
)));
// Now, reach into the body and grab the inner_obj.
check
type_is_tup_like
(
bcx
,
body_ty
);
let
llinner_obj
=
GEP_tup_like
(
bcx
,
body_ty
,
llself_obj_body
,
[
0
,
abi
::
obj_body_elt_inner_obj
]);
...
...
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