plugins.texi (Plugin callbacks): added PLUGIN_PRAGMAS.

2009-11-06  Basile Starynkevitch  <basile@starynkevitch.net>

	* doc/plugins.texi (Plugin callbacks): added PLUGIN_PRAGMAS.
	* c-pragma.c: Include "plugin.h".
	(init_pragma): Invoke PLUGIN_PRAGMAS.
	* gcc-plugin.h: Added PLUGIN_PRAGMAS.
	* plugin.c (plugin_event_name): Added PLUGIN_PRAGMAS & the missing
	PLUGIN_ATTRIBUTES.
	(register_callback): Added PLUGIN_PRAGMAS. Fixed typo in message
	error for unknown callback event.
	(invoke_plugin_callbacks): Added PLUGIN_PRAGMAS.
	* Makefile.in (c-pragma.o): Added dependency upon plugin.h.
	(PLUGIN_HEADERS): added plugin.h.

2009-11-06  Basile Starynkevitch  <basile@starynkevitch.net>

	* g++.dg/plugin/pragma_plugin-test-1.C: new testcase for
	PLUGIN_PRAGMAS.
	* g++.dg/plugin/pragma_plugin.c: new test plugin for
	PLUGIN_PRAGMAS.
	* g++.dg/plugin/plugin.exp (plugin_test_list): Add pragma_plugin.c and
	pragma_plugin-test-1.C.

From-SVN: r153975
This commit is contained in:
Basile Starynkevitch 2009-11-06 19:20:39 +00:00 committed by Rafael Espindola
parent 87e9286428
commit 7ac8318c2d
9 changed files with 109 additions and 5 deletions

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@ -1982,7 +1982,7 @@ c-convert.o : c-convert.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
c-pragma.o: c-pragma.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) \
$(TREE_H) $(FUNCTION_H) $(C_PRAGMA_H) $(TOPLEV_H) output.h $(GGC_H) $(TM_P_H) \
$(C_COMMON_H) $(TARGET_H) gt-c-pragma.h $(CPPLIB_H) $(FLAGS_H) $(DIAGNOSTIC_H) \
opts.h
opts.h $(PLUGINS_H)
graph.o: graph.c $(SYSTEM_H) coretypes.h $(TM_H) $(TOPLEV_H) $(FLAGS_H) output.h \
$(RTL_H) $(FUNCTION_H) hard-reg-set.h $(BASIC_BLOCK_H) graph.h $(OBSTACK_H) \
$(CONFIG_H)
@ -4260,7 +4260,8 @@ PLUGIN_HEADERS = $(TREE_H) $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
$(host_xm_file_list) $(host_xm_include_list) $(xm_include_list) \
intl.h $(PLUGIN_VERSION_H) $(DIAGNOSTIC_H) $(C_COMMON_H) $(C_PRETTY_PRINT_H) \
tree-iterator.h $(PLUGIN_H) $(TREE_FLOW_H) langhooks.h incpath.h \
tree-ssa-sccvn.h real.h output.h $(IPA_UTILS_H)
tree-ssa-sccvn.h real.h output.h $(IPA_UTILS_H) \
$(C_PRAGMA_H) $(CPPLIB_H) $(FUNCTION_H)
# Install the headers needed to build a plugin.
install-plugin: installdirs lang.install-plugin
@ -4524,7 +4525,7 @@ install-collect2: collect2 installdirs
# Install lto-wrapper.
install-lto-wrapper: lto-wrapper$(exeext)
$(INSTALL_PROGRAM) lto-wrapper$(exeext) $(DESTDIR)$(libexecsubdir)/lto-wrapper$(exeext)
# Cancel installation by deleting the installed files.
uninstall: lang.uninstall
-rm -rf $(DESTDIR)$(libsubdir)

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@ -37,6 +37,7 @@ along with GCC; see the file COPYING3. If not see
#include "target.h"
#include "diagnostic.h"
#include "opts.h"
#include "plugin.h"
#define GCC_BAD(gmsgid) \
do { warning (OPT_Wpragmas, gmsgid); return; } while (0)
@ -1450,6 +1451,9 @@ init_pragma (void)
#ifdef REGISTER_TARGET_PRAGMAS
REGISTER_TARGET_PRAGMAS ();
#endif
/* Allow plugins to register their own pragmas. */
invoke_plugin_callbacks (PLUGIN_PRAGMAS, NULL);
}
#include "gt-c-pragma.h"

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@ -136,6 +136,7 @@ enum plugin_event
PLUGIN_REGISTER_GGC_CACHES, /* Register an extra GGC cache table. */
PLUGIN_ATTRIBUTES, /* Called during attribute registration */
PLUGIN_START_UNIT, /* Called before processing a translation unit. */
PLUGIN_PRAGMAS, /* Called during pragma registration. */
PLUGIN_EVENT_LAST /* Dummy event used for indexing callback
array. */
@};
@ -156,6 +157,11 @@ For the PLUGIN_PASS_MANAGER_SETUP, PLUGIN_INFO, PLUGIN_REGISTER_GGC_ROOTS
and PLUGIN_REGISTER_GGC_CACHES pseudo-events the @code{callback} should be
null, and the @code{user_data} is specific.
When the PLUGIN_PRAGMAS event is triggered (with a null
pointer as data from GCC), plugins may register their own pragmas
using functions like @code{c_register_pragma} or
@code{c_register_pragma_with_expansion}.
@section Interacting with the pass manager
There needs to be a way to add/reorder/remove passes dynamically. This

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@ -43,6 +43,7 @@ enum plugin_event
PLUGIN_REGISTER_GGC_CACHES, /* Register an extra GGC cache table. */
PLUGIN_ATTRIBUTES, /* Called during attribute registration. */
PLUGIN_START_UNIT, /* Called before processing a translation unit. */
PLUGIN_PRAGMAS, /* Called during pragma registration. */
PLUGIN_EVENT_LAST /* Dummy event used for indexing callback
array. */
};

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@ -58,7 +58,9 @@ const char *plugin_event_name[] =
"PLUGIN_GGC_END",
"PLUGIN_REGISTER_GGC_ROOTS",
"PLUGIN_REGISTER_GGC_CACHES",
"PLUGIN_START_UNIT",
"PLUGIN_ATTRIBUTES",
"PLUGIN_START_UNIT",
"PLUGIN_PRAGMAS",
"PLUGIN_EVENT_LAST"
};
@ -325,6 +327,7 @@ register_callback (const char *plugin_name,
case PLUGIN_GGC_MARKING:
case PLUGIN_GGC_END:
case PLUGIN_ATTRIBUTES:
case PLUGIN_PRAGMAS:
case PLUGIN_FINISH:
{
struct callback_info *new_callback;
@ -344,7 +347,7 @@ register_callback (const char *plugin_name,
break;
case PLUGIN_EVENT_LAST:
default:
error ("Unkown callback event registered by plugin %s",
error ("Unknown callback event registered by plugin %s",
plugin_name);
}
}
@ -368,6 +371,7 @@ invoke_plugin_callbacks (enum plugin_event event, void *gcc_data)
case PLUGIN_FINISH_UNIT:
case PLUGIN_CXX_CP_PRE_GENERICIZE:
case PLUGIN_ATTRIBUTES:
case PLUGIN_PRAGMAS:
case PLUGIN_FINISH:
case PLUGIN_GGC_START:
case PLUGIN_GGC_MARKING:

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@ -1,3 +1,12 @@
2009-11-06 Basile Starynkevitch <basile@starynkevitch.net>
* g++.dg/plugin/pragma_plugin-test-1.C: new testcase for
PLUGIN_PRAGMAS.
* g++.dg/plugin/pragma_plugin.c: new test plugin for
PLUGIN_PRAGMAS.
* g++.dg/plugin/plugin.exp (plugin_test_list): Add pragma_plugin.c and
pragma_plugin-test-1.C.
2009-11-06 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR c++/41536

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@ -48,6 +48,7 @@ load_lib plugin-support.exp
# plugin_test_list={ {plugin1 test1 test2 ...} {plugin2 test1 ...} ... }
set plugin_test_list [list \
{ attribute_plugin.c attribute_plugin-test-1.C } \
{ pragma_plugin.c pragma_plugin-test-1.C } \
{ selfassign.c self-assign-test-1.C self-assign-test-2.C self-assign-test-3.C } \
{ dumb_plugin.c dumb-plugin-test-1.C } \
{ header_plugin.c header-plugin-test.C } ]

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@ -0,0 +1,18 @@
// { dg-warning "Callback to register pragmas" "" { target *-*-* } 0 }
int some_func (int c);
#pragma GCCPLUGIN sayhello "here" // { dg-warning "'pragma GCCPLUGIN sayhello' outside of function: here" }
int some_func (const char* s)
{
#pragma GCCPLUGIN sayhello "at start" // { dg-warning "'pragma GCCPLUGIN sayhello' from function 'some_func': at start" }
#define DO_PRAGMA(x) _Pragma(#x)
if (!s)
{
DO_PRAGMA(GCCPLUGIN sayhello "in block"); // { dg-warning "'pragma GCCPLUGIN sayhello' from function 'some_func': in block" }
return 0;
}
return 1;
}

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@ -0,0 +1,60 @@
/* Demonstrates how to add custom pragmas */
#include "gcc-plugin.h"
#include <stdlib.h>
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "rtl.h"
#include "tree.h"
#include "function.h"
#include "c-pragma.h"
#include "cpplib.h"
#include "tree-pass.h"
#include "intl.h"
int plugin_is_GPL_compatible;
/* handler of #pragma GCCPLUGIN sayhello "message" is quite similar to
handler of #pragma GCC message...*/
static void
handle_pragma_sayhello (cpp_reader *dummy)
{
tree message = 0;
if (pragma_lex (&message) != CPP_STRING)
{
warning (OPT_Wpragmas, "%<#pragma GCCPLUGIN sayhello%> is not a string");
return;
}
if (TREE_STRING_LENGTH (message) > 1)
if (cfun)
warning (OPT_Wpragmas,
"%<pragma GCCPLUGIN sayhello%> from function %qE: %s",
cfun->decl, TREE_STRING_POINTER (message));
else
warning (OPT_Wpragmas,
"%<pragma GCCPLUGIN sayhello%> outside of function: %s",
TREE_STRING_POINTER (message));
}
/* Plugin callback called during pragma registration */
static void
register_my_pragma (void *event_data, void *data)
{
warning (0, G_("Callback to register pragmas"));
c_register_pragma ("GCCPLUGIN", "sayhello", handle_pragma_sayhello);
}
int
plugin_init (struct plugin_name_args *plugin_info,
struct plugin_gcc_version *version)
{
const char *plugin_name = plugin_info->base_name;
register_callback (plugin_name, PLUGIN_PRAGMAS, register_my_pragma, NULL);
return 0;
}