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4f7ab0e1
编写于
5月 27, 2016
作者:
M
Michael Woerister
浏览文件
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浏览文件
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电子邮件补丁
差异文件
Emit "no-frame-pointer-elim" attribute for closures, shims, and glue.
上级
36d5dc7c
变更
7
隐藏空白更改
内联
并排
Showing
7 changed file
with
27 addition
and
13 deletion
+27
-13
src/librustc/session/mod.rs
src/librustc/session/mod.rs
+6
-1
src/librustc_trans/attributes.rs
src/librustc_trans/attributes.rs
+13
-11
src/librustc_trans/callee.rs
src/librustc_trans/callee.rs
+1
-1
src/librustc_trans/closure.rs
src/librustc_trans/closure.rs
+2
-0
src/librustc_trans/glue.rs
src/librustc_trans/glue.rs
+2
-0
src/librustc_trans/meth.rs
src/librustc_trans/meth.rs
+2
-0
src/librustc_trans/monomorphize.rs
src/librustc_trans/monomorphize.rs
+1
-0
未找到文件。
src/librustc/session/mod.rs
浏览文件 @
4f7ab0e1
...
...
@@ -15,7 +15,7 @@
use
middle
::
cstore
::
CrateStore
;
use
middle
::
dependency_format
;
use
session
::
search_paths
::
PathKind
;
use
session
::
config
::
PanicStrategy
;
use
session
::
config
::
{
DebugInfoLevel
,
PanicStrategy
}
;
use
ty
::
tls
;
use
util
::
nodemap
::{
NodeMap
,
FnvHashMap
};
use
mir
::
transform
as
mir_pass
;
...
...
@@ -315,6 +315,11 @@ pub fn nonzeroing_move_hints(&self) -> bool {
self
.opts.debugging_opts.enable_nonzeroing_move_hints
}
pub
fn
must_not_eliminate_frame_pointers
(
&
self
)
->
bool
{
self
.opts.debuginfo
!=
DebugInfoLevel
::
NoDebugInfo
||
!
self
.target.target.options.eliminate_frame_pointer
}
/// Returns the symbol name for the registrar function,
/// given the crate Svh and the function DefIndex.
pub
fn
generate_plugin_registrar_symbol
(
&
self
,
svh
:
&
Svh
,
index
:
DefIndex
)
...
...
src/librustc_trans/attributes.rs
浏览文件 @
4f7ab0e1
...
...
@@ -11,7 +11,6 @@
use
libc
::
c_uint
;
use
llvm
::{
self
,
ValueRef
};
use
session
::
config
::
NoDebugInfo
;
pub
use
syntax
::
attr
::
InlineAttr
;
use
syntax
::
ast
;
use
context
::
CrateContext
;
...
...
@@ -74,25 +73,28 @@ pub fn naked(val: ValueRef, is_naked: bool) {
}
}
/// Composite function which sets LLVM attributes for function depending on its AST (#[attribute])
/// attributes.
pub
fn
from_fn_attrs
(
ccx
:
&
CrateContext
,
attrs
:
&
[
ast
::
Attribute
],
llfn
:
ValueRef
)
{
use
syntax
::
attr
::
*
;
inline
(
llfn
,
find_inline_attr
(
Some
(
ccx
.sess
()
.diagnostic
()),
attrs
));
pub
fn
set_frame_pointer_elimination
(
ccx
:
&
CrateContext
,
llfn
:
ValueRef
)
{
// FIXME: #11906: Omitting frame pointers breaks retrieving the value of a
// parameter.
let
no_fp_elim
=
(
ccx
.sess
()
.opts.debuginfo
!=
NoDebugInfo
)
||
!
ccx
.sess
()
.target.target.options.eliminate_frame_pointer
;
if
no_fp_elim
{
if
ccx
.sess
()
.must_not_eliminate_frame_pointers
()
{
unsafe
{
let
attr
=
"no-frame-pointer-elim
\0
"
.as_ptr
()
as
*
const
_
;
let
val
=
"true
\0
"
.as_ptr
()
as
*
const
_
;
llvm
::
LLVMAddFunctionAttrStringValue
(
llfn
,
llvm
::
FunctionIndex
as
c_uint
,
attr
,
val
);
attr
,
val
);
}
}
}
/// Composite function which sets LLVM attributes for function depending on its AST (#[attribute])
/// attributes.
pub
fn
from_fn_attrs
(
ccx
:
&
CrateContext
,
attrs
:
&
[
ast
::
Attribute
],
llfn
:
ValueRef
)
{
use
syntax
::
attr
::
*
;
inline
(
llfn
,
find_inline_attr
(
Some
(
ccx
.sess
()
.diagnostic
()),
attrs
));
set_frame_pointer_elimination
(
ccx
,
llfn
);
for
attr
in
attrs
{
if
attr
.check_name
(
"cold"
)
{
...
...
src/librustc_trans/callee.rs
浏览文件 @
4f7ab0e1
...
...
@@ -381,7 +381,7 @@ pub fn trans_fn_pointer_shim<'a, 'tcx>(
bare_fn_ty
,
"fn_pointer_shim"
);
let
llfn
=
declare
::
define_internal_fn
(
ccx
,
&
function_name
,
tuple_fn_ty
);
attributes
::
set_frame_pointer_elimination
(
ccx
,
llfn
);
//
let
(
block_arena
,
fcx
):
(
TypedArena
<
_
>
,
FunctionContext
);
block_arena
=
TypedArena
::
new
();
...
...
src/librustc_trans/closure.rs
浏览文件 @
4f7ab0e1
...
...
@@ -171,6 +171,7 @@ fn get_or_create_closure_declaration<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
// set an inline hint for all closures
attributes
::
inline
(
llfn
,
attributes
::
InlineAttr
::
Hint
);
attributes
::
set_frame_pointer_elimination
(
ccx
,
llfn
);
debug!
(
"get_or_create_declaration_if_closure(): inserting new
\
closure {:?}: {:?}"
,
...
...
@@ -377,6 +378,7 @@ fn trans_fn_once_adapter_shim<'a, 'tcx>(
let
function_name
=
symbol_names
::
internal_name_from_type_and_suffix
(
ccx
,
llonce_fn_ty
,
"once_shim"
);
let
lloncefn
=
declare
::
define_internal_fn
(
ccx
,
&
function_name
,
llonce_fn_ty
);
attributes
::
set_frame_pointer_elimination
(
ccx
,
lloncefn
);
let
(
block_arena
,
fcx
):
(
TypedArena
<
_
>
,
FunctionContext
);
block_arena
=
TypedArena
::
new
();
...
...
src/librustc_trans/glue.rs
浏览文件 @
4f7ab0e1
...
...
@@ -14,6 +14,7 @@
use
std
;
use
attributes
;
use
back
::
symbol_names
;
use
llvm
;
use
llvm
::{
ValueRef
,
get_param
};
...
...
@@ -272,6 +273,7 @@ fn get_drop_glue_core<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
let
fn_nm
=
symbol_names
::
internal_name_from_type_and_suffix
(
ccx
,
t
,
suffix
);
assert
!
(
declare
::
get_defined_value
(
ccx
,
&
fn_nm
)
.is_none
());
let
llfn
=
declare
::
declare_cfn
(
ccx
,
&
fn_nm
,
llfnty
);
attributes
::
set_frame_pointer_elimination
(
ccx
,
llfn
);
ccx
.available_drop_glues
()
.borrow_mut
()
.insert
(
g
,
fn_nm
);
ccx
.drop_glues
()
.borrow_mut
()
.insert
(
g
,
llfn
);
...
...
src/librustc_trans/meth.rs
浏览文件 @
4f7ab0e1
...
...
@@ -10,6 +10,7 @@
use
std
::
rc
::
Rc
;
use
attributes
;
use
arena
::
TypedArena
;
use
back
::
symbol_names
;
use
llvm
::{
ValueRef
,
get_params
};
...
...
@@ -91,6 +92,7 @@ pub fn trans_object_shim<'a, 'tcx>(ccx: &'a CrateContext<'a, 'tcx>,
let
function_name
=
symbol_names
::
internal_name_from_type_and_suffix
(
ccx
,
method_ty
,
"object_shim"
);
let
llfn
=
declare
::
define_internal_fn
(
ccx
,
&
function_name
,
method_ty
);
attributes
::
set_frame_pointer_elimination
(
ccx
,
llfn
);
let
(
block_arena
,
fcx
):
(
TypedArena
<
_
>
,
FunctionContext
);
block_arena
=
TypedArena
::
new
();
...
...
src/librustc_trans/monomorphize.rs
浏览文件 @
4f7ab0e1
...
...
@@ -151,6 +151,7 @@ pub fn monomorphic_fn<'a, 'tcx>(ccx: &CrateContext<'a, 'tcx>,
_
=>
bug!
()
};
attributes
::
inline
(
lldecl
,
attributes
::
InlineAttr
::
Hint
);
attributes
::
set_frame_pointer_elimination
(
ccx
,
lldecl
);
base
::
trans_ctor_shim
(
ccx
,
fn_node_id
,
disr
,
psubsts
,
lldecl
);
}
...
...
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