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cgraphunit.c (process_function_and_variable_attributes): Mark dllexport-ed function/variables as needed. 

2010-11-25  Kai Tietz  <kai.tietz@onevision.com>

	* cgraphunit.c (process_function_and_variable_attributes):
	Mark dllexport-ed function/variables as needed.
	* ipa.c (cgraph_externally_visible_p): Make dllexport-ed
	as externally visible.

2010-11-25  Kai Tietz  <kai.tietz@onevision.com>

	* gcc.dg/dll-8.c: New.

From-SVN: r167144
This commit is contained in:
Kai Tietz 2010-11-25 12:30:07 +00:00 committed by Kai Tietz
parent c8230704c4
commit 9d602c5900
5 changed files with 48 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2010-11-25 Kai Tietz <kai.tietz@onevision.com>
* cgraphunit.c (process_function_and_variable_attributes):
Mark dllexport-ed function/variables as needed.
* ipa.c (cgraph_externally_visible_p): Make dllexport-ed
as externally visible.
2010-11-25 Alexander Monakov <amonakov@ispras.ru> 2010-11-25 Alexander Monakov <amonakov@ispras.ru>
PR rtl-optimization/46585 PR rtl-optimization/46585

18
gcc/cgraphunit.c
View File

@ -816,7 +816,14 @@ process_function_and_variable_attributes (struct cgraph_node *first,
tree decl = node->decl; tree decl = node->decl;
if (DECL_PRESERVE_P (decl)) if (DECL_PRESERVE_P (decl))
cgraph_mark_needed_node (node); cgraph_mark_needed_node (node);
if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl))) if (TARGET_DLLIMPORT_DECL_ATTRIBUTES
&& lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl))
&& TREE_PUBLIC (node->decl))
{
if (node->local.finalized)
cgraph_mark_needed_node (node);
}
else if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl)))
{ {
if (! TREE_PUBLIC (node->decl)) if (! TREE_PUBLIC (node->decl))
warning_at (DECL_SOURCE_LOCATION (node->decl), OPT_Wattributes, warning_at (DECL_SOURCE_LOCATION (node->decl), OPT_Wattributes,
@ -835,7 +842,14 @@ process_function_and_variable_attributes (struct cgraph_node *first,
if (vnode->finalized) if (vnode->finalized)
varpool_mark_needed_node (vnode); varpool_mark_needed_node (vnode);
} }
if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl))) if (TARGET_DLLIMPORT_DECL_ATTRIBUTES
&& lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl))
&& TREE_PUBLIC (node->decl))
{
if (vnode->finalized)
varpool_mark_needed_node (vnode);
}
else if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (decl)))
{ {
if (! TREE_PUBLIC (vnode->decl)) if (! TREE_PUBLIC (vnode->decl))
warning_at (DECL_SOURCE_LOCATION (vnode->decl), OPT_Wattributes, warning_at (DECL_SOURCE_LOCATION (vnode->decl), OPT_Wattributes,

8
gcc/ipa.c
View File

@ -662,7 +662,9 @@ cgraph_externally_visible_p (struct cgraph_node *node, bool whole_program, bool
return true; return true;
if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (node->decl))) if (lookup_attribute ("externally_visible", DECL_ATTRIBUTES (node->decl)))
return true; return true;
if (TARGET_DLLIMPORT_DECL_ATTRIBUTES
&& lookup_attribute ("dllexport", DECL_ATTRIBUTES (node->decl)))
return true;
/* When doing LTO or whole program, we can bring COMDAT functoins static. /* When doing LTO or whole program, we can bring COMDAT functoins static.
This improves code quality and we know we will duplicate them at most twice This improves code quality and we know we will duplicate them at most twice
(in the case that we are not using plugin and link with object file (in the case that we are not using plugin and link with object file
@ -724,6 +726,10 @@ varpool_externally_visible_p (struct varpool_node *vnode, bool aliased)
if (lookup_attribute ("externally_visible", if (lookup_attribute ("externally_visible",
DECL_ATTRIBUTES (vnode->decl))) DECL_ATTRIBUTES (vnode->decl)))
return true; return true;
if (TARGET_DLLIMPORT_DECL_ATTRIBUTES
&& lookup_attribute ("dllexport",
DECL_ATTRIBUTES (vnode->decl)))
return true;
/* See if we have linker information about symbol not being used or /* See if we have linker information about symbol not being used or
if we need to make guess based on the declaration. if we need to make guess based on the declaration.

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2010-11-25 Kai Tietz <kai.tietz@onevision.com>
* gcc.dg/dll-8.c: New.
2010-11-25 Eric Botcazou <ebotcazou@adacore.com> 2010-11-25 Eric Botcazou <ebotcazou@adacore.com>
* gnat.dg/loop_optimization7.adb: Remove dg-require-effective-target. * gnat.dg/loop_optimization7.adb: Remove dg-require-effective-target.

14
gcc/testsuite/gcc.dg/dll-8.c Executable file
View File

@ -0,0 +1,14 @@
/* { dg-do compile { target i?86-pc-cygwin } } */
/* { dg-do compile { target i?86-*-mingw* x86_64-*-mingw*} } */
/* { dg-options "-O3 -fwhole-program" } */
/* { dg-final { scan-assembler "foo1" } } */
/* { dg-final { scan-assembler-not "foo2" } } */
/* { dg-final { scan-assembler "doo1" } } */
/* { dg-final { scan-assembler-not "doo2" } } */
__declspec(dllexport) int doo1 = 2;
int doo2 = 3;
__declspec(dllexport) int foo1 (void) { return 0; }
int foo2 (void) { return 1; }
int main() { return 0; }