Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0.

These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.

1 files changed, 71 insertions, 0 deletions

diff --git a/contrib/gcc/ssa.h b/contrib/gcc/ssa.h
new file mode 100644
index 0000000..a0fc137
--- /dev/null
+++ b/contrib/gcc/ssa.h
@@ -0,0 +1,71 @@
+/* Static Single Assignment (SSA) definitions for GNU C-Compiler
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Written by Jeffrey D. Oldham <oldham@codesourcery.com>.
+
+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 2, 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 COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.  */
+
+
+/* Main SSA routines.  */
+extern void convert_to_ssa		PARAMS ((void));
+extern void convert_from_ssa		PARAMS ((void));
+typedef int (*successor_phi_fn)         PARAMS ((rtx, int, int, void *));
+extern int for_each_successor_phi       PARAMS ((basic_block bb,
+						 successor_phi_fn,
+						 void *));
+void compute_dominance_frontiers	PARAMS ((sbitmap *frontiers, int *idom));
+extern int remove_phi_alternative	PARAMS ((rtx, basic_block));
+
+
+/* Optimizations.  */
+/* In ssa-dce.c */
+extern void ssa_eliminate_dead_code	PARAMS ((void));
+
+/* In ssa-ccp.c */
+extern void ssa_const_prop		PARAMS ((void));
+
+
+/* SSA definitions and uses.  */
+/* This flag is set when the CFG is in SSA form.  */
+extern int in_ssa_form;
+
+/* Element I is the single instruction that sets register I.  */
+extern varray_type ssa_definition;
+
+/* Element I is an INSN_LIST of instructions that use register I.  */
+extern varray_type ssa_uses;
+
+
+/* Specify which hard registers should be converted.  */
+
+/* All pseudo-registers (having register number >=
+   FIRST_PSEUDO_REGISTER) and hard registers satisfying
+   CONVERT_HARD_REGISTER_TO_SSA_P are converted to SSA form.  */
+
+/* Given a hard register number REG_NO, return nonzero if and only if
+   the register should be converted to SSA.  */
+
+#ifndef CONVERT_HARD_REGISTER_TO_SSA_P
+#define CONVERT_HARD_REGISTER_TO_SSA_P(REG_NO) (0) /* default of no hard registers */
+#endif /* CONVERT_HARD_REGISTER_TO_SSA_P  */
+
+/* Given a register number REG_NO, return nonzero if and only if the
+   register should be converted to SSA.  */
+
+#define CONVERT_REGISTER_TO_SSA_P(REG_NO)	\
+	((!HARD_REGISTER_NUM_P (REG_NO)) || \
+	 (CONVERT_HARD_REGISTER_TO_SSA_P (REG_NO)))