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体验新版 GitCode,发现更多精彩内容 >>
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4053e25b
编写于
3月 13, 2018
作者:
E
Emilio Cobos Álvarez
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电子邮件补丁
差异文件
librustc_trans: Mark some profiler symbols as exported to avoid LTO removing them.
上级
8a4cebd1
变更
3
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3 changed file
with
33 addition
and
0 deletion
+33
-0
src/librustc_trans/back/symbol_export.rs
src/librustc_trans/back/symbol_export.rs
+14
-0
src/test/run-make/pgo-gen-lto/Makefile
src/test/run-make/pgo-gen-lto/Makefile
+8
-0
src/test/run-make/pgo-gen-lto/test.rs
src/test/run-make/pgo-gen-lto/test.rs
+11
-0
未找到文件。
src/librustc_trans/back/symbol_export.rs
浏览文件 @
4053e25b
...
@@ -223,6 +223,20 @@ fn exported_symbols_provider_local<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
...
@@ -223,6 +223,20 @@ fn exported_symbols_provider_local<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
}
}
}
}
if
tcx
.sess.opts.debugging_opts.pgo_gen
.is_some
()
{
// These are weak symbols that point to the profile version and the
// profile name, which need to be treated as exported so LTO doesn't nix
// them.
const
PROFILER_WEAK_SYMBOLS
:
[
&
'static
str
;
2
]
=
[
"__llvm_profile_raw_version"
,
"__llvm_profile_filename"
,
];
for
sym
in
&
PROFILER_WEAK_SYMBOLS
{
let
exported_symbol
=
ExportedSymbol
::
NoDefId
(
SymbolName
::
new
(
sym
));
symbols
.push
((
exported_symbol
,
SymbolExportLevel
::
C
));
}
}
if
tcx
.sess.crate_types
.borrow
()
.contains
(
&
config
::
CrateTypeDylib
)
{
if
tcx
.sess.crate_types
.borrow
()
.contains
(
&
config
::
CrateTypeDylib
)
{
let
symbol_name
=
metadata_symbol_name
(
tcx
);
let
symbol_name
=
metadata_symbol_name
(
tcx
);
let
exported_symbol
=
ExportedSymbol
::
NoDefId
(
SymbolName
::
new
(
&
symbol_name
));
let
exported_symbol
=
ExportedSymbol
::
NoDefId
(
SymbolName
::
new
(
&
symbol_name
));
...
...
src/test/run-make/pgo-gen-lto/Makefile
0 → 100644
浏览文件 @
4053e25b
-include
../tools.mk
all
:
ifeq
($(PROFILER_SUPPORT),1)
$(RUSTC)
-Copt-level
=
3
-Clto
=
fat
-Z
pgo-gen
=
test.profraw test.rs
$(
call
RUN,test
)
||
exit
1
[
-e
"
$(TMPDIR)
/test.profraw"
]
||
(
echo
"No .profraw file"
;
exit
1
)
endif
src/test/run-make/pgo-gen-lto/test.rs
0 → 100644
浏览文件 @
4053e25b
// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
fn
main
()
{}
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