Patchwork [21/27] Add apply_args_{mode,result} to the target structure

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Submitter Richard Sandiford
Date July 7, 2010, 9:25 p.m.
Message ID <87k4p7rnks.fsf@firetop.home>
Download mbox | patch
Permalink /patch/58188/
State New
Headers show

Comments

Richard Sandiford - July 7, 2010, 9:25 p.m.
This patch continues adding extra stuff to the target globals structures.
This time it's apply_args_mode and apply_args_result.  Admittedly they
are border-line cases, since subtargets would usually be ABI-compatible
with each other.  The contents are fundamentally target-dependent though,
so it seems better to add them to the target globals than not.

Richard


gcc/
	* Makefile.in (target-globals.o): Depend on builtins.h.
	* builtins.h: New file.
	* builtins.c: Include builtins.h.
	(default_target_builtins): New variable.
	(this_target_builtins): New conditional variable.
	(apply_args_mode, apply_result_mode): Redefine as macros.
	* target-globals.h (this_target_builtins): Declare.
	(target_globals): Add a builtins field.
	(restore_target_globals): Copy the builtins field to
	this_target_builtins.
	* target-globals.c: Include builtins.h.
	(default_target_globals): Initialize the builtins field.
	(save_target_globals): Likewise.

Patch

Index: gcc/Makefile.in
===================================================================
--- gcc/Makefile.in	2010-07-07 22:17:34.000000000 +0100
+++ gcc/Makefile.in	2010-07-07 22:21:40.000000000 +0100
@@ -3479,7 +3479,7 @@  lower-subreg.o : lower-subreg.c $(CONFIG
 target-globals.o : target-globals.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
    $(TM_H) insn-config.h $(MACHMODE_H) $(GGC_H) $(TOPLEV_H) target-globals.h \
    $(FLAGS_H) $(REGS_H) $(RTL_H) reload.h expmed.h $(EXPR_H) $(OPTABS_H) \
-   $(LIBFUNCS_H) $(CFGLOOP_H) $(IRA_INT_H)
+   $(LIBFUNCS_H) $(CFGLOOP_H) $(IRA_INT_H) builtins.h
 
 $(out_object_file): $(out_file) $(CONFIG_H) coretypes.h $(TM_H) $(TREE_H) \
    $(RTL_H) $(REGS_H) hard-reg-set.h insn-config.h conditions.h \
Index: gcc/builtins.h
===================================================================
--- /dev/null	2010-07-07 22:25:18.139280603 +0100
+++ gcc/builtins.h	2010-07-07 22:21:40.000000000 +0100
@@ -0,0 +1,49 @@ 
+/* Expand builtin functions.
+   Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_BUILTINS_H
+#define GCC_BUILTINS_H
+
+/* Target-dependent globals.  */
+struct target_builtins {
+  /* For each register that may be used for calling a function, this
+     gives a mode used to copy the register's value.  VOIDmode indicates
+     the register is not used for calling a function.  If the machine
+     has register windows, this gives only the outbound registers.
+     INCOMING_REGNO gives the corresponding inbound register.  */
+  enum machine_mode x_apply_args_mode[FIRST_PSEUDO_REGISTER];
+
+  /* For each register that may be used for returning values, this gives
+     a mode used to copy the register's value.  VOIDmode indicates the
+     register is not used for returning values.  If the machine has
+     register windows, this gives only the outbound registers.
+     INCOMING_REGNO gives the corresponding inbound register.  */
+  enum machine_mode x_apply_result_mode[FIRST_PSEUDO_REGISTER];
+};
+
+extern GTY(()) struct target_builtins default_target_builtins;
+#if SWITCHABLE_TARGET
+extern struct target_builtins *this_target_builtins;
+#else
+#define this_target_builtins (&default_target_builtins)
+#endif
+
+#endif
Index: gcc/builtins.c
===================================================================
--- gcc/builtins.c	2010-07-07 21:30:42.000000000 +0100
+++ gcc/builtins.c	2010-07-07 22:21:40.000000000 +0100
@@ -50,6 +50,7 @@  Software Foundation; either version 3, o
 #include "tree-flow.h"
 #include "value-prof.h"
 #include "diagnostic-core.h"
+#include "builtins.h"
 
 #ifndef SLOW_UNALIGNED_ACCESS
 #define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) STRICT_ALIGNMENT
@@ -60,6 +61,11 @@  #define PAD_VARARGS_DOWN BYTES_BIG_ENDIA
 #endif
 static tree do_mpc_arg1 (tree, tree, int (*)(mpc_ptr, mpc_srcptr, mpc_rnd_t));
 
+struct target_builtins default_target_builtins;
+#if SWITCHABLE_TARGET
+struct target_builtins *this_target_builtins = &default_target_builtins;
+#endif
+
 /* Define the names of the builtin function types and codes.  */
 const char *const built_in_class_names[4]
   = {"NOT_BUILT_IN", "BUILT_IN_FRONTEND", "BUILT_IN_MD", "BUILT_IN_NORMAL"};
@@ -1249,19 +1255,10 @@  get_memory_rtx (tree exp, tree len)
 
 /* Built-in functions to perform an untyped call and return.  */
 
-/* For each register that may be used for calling a function, this
-   gives a mode used to copy the register's value.  VOIDmode indicates
-   the register is not used for calling a function.  If the machine
-   has register windows, this gives only the outbound registers.
-   INCOMING_REGNO gives the corresponding inbound register.  */
-static enum machine_mode apply_args_mode[FIRST_PSEUDO_REGISTER];
-
-/* For each register that may be used for returning values, this gives
-   a mode used to copy the register's value.  VOIDmode indicates the
-   register is not used for returning values.  If the machine has
-   register windows, this gives only the outbound registers.
-   INCOMING_REGNO gives the corresponding inbound register.  */
-static enum machine_mode apply_result_mode[FIRST_PSEUDO_REGISTER];
+#define apply_args_mode \
+  (this_target_builtins->x_apply_args_mode)
+#define apply_result_mode \
+  (this_target_builtins->x_apply_result_mode)
 
 /* Return the size required for the block returned by __builtin_apply_args,
    and initialize apply_args_mode.  */
Index: gcc/target-globals.h
===================================================================
--- gcc/target-globals.h	2010-07-07 22:17:34.000000000 +0100
+++ gcc/target-globals.h	2010-07-07 22:21:40.000000000 +0100
@@ -32,6 +32,7 @@  #define TARGET_GLOBALS_H 1
 extern struct target_cfgloop *this_target_cfgloop;
 extern struct target_ira *this_target_ira;
 extern struct target_ira_int *this_target_ira_int;
+extern struct target_builtins *this_target_builtins;
 
 struct GTY(()) target_globals {
   struct target_flag_state *GTY((skip)) flag_state;
@@ -45,6 +46,7 @@  struct GTY(()) target_globals {
   struct target_cfgloop *GTY((skip)) cfgloop;
   struct target_ira *GTY((skip)) ira;
   struct target_ira_int *GTY((skip)) ira_int;
+  struct target_builtins *GTY((skip)) builtins;
 };
 
 extern struct target_globals default_target_globals;
@@ -65,6 +67,7 @@  restore_target_globals (struct target_gl
   this_target_cfgloop = g->cfgloop;
   this_target_ira = g->ira;
   this_target_ira_int = g->ira_int;
+  this_target_builtins = g->builtins;
 }
 #endif
 
Index: gcc/target-globals.c
===================================================================
--- gcc/target-globals.c	2010-07-07 22:17:34.000000000 +0100
+++ gcc/target-globals.c	2010-07-07 22:21:40.000000000 +0100
@@ -37,6 +37,7 @@  Software Foundation; either version 3, o
 #include "libfuncs.h"
 #include "cfgloop.h"
 #include "ira-int.h"
+#include "builtins.h"
 
 #if SWITCHABLE_TARGET
 struct target_globals default_target_globals = {
@@ -50,7 +51,8 @@  struct target_globals default_target_glo
   &default_target_libfuncs,
   &default_target_cfgloop,
   &default_target_ira,
-  &default_target_ira_int
+  &default_target_ira_int,
+  &default_target_builtins
 };
 
 struct target_globals *
@@ -70,6 +72,7 @@  save_target_globals (void)
   g->cfgloop = XCNEW (struct target_cfgloop);
   g->ira = XCNEW (struct target_ira);
   g->ira_int = XCNEW (struct target_ira_int);
+  g->builtins = XCNEW (struct target_builtins);
   restore_target_globals (g);
   target_reinit ();
   return g;