From 30f4db0d0ca544491708a54ec8bb771fd697c48c Mon Sep 17 00:00:00 2001 From: zack Date: Wed, 18 Aug 2004 22:31:03 +0000 Subject: * insn-notes.def, reg-notes.def: New files. * rtl.h: Use them to define enum insn_note and enum reg_note. * rtl.c: Use them to define note_insn_name and reg_note_name. * modulo-sched.c, sched-rgn.c, final.c: NOTE_DISABLE_SCHED_OF_BLOCK renamed to NOTE_INSN_DISABLE_SCHED_OF_BLOCK. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@86212 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/insn-notes.def | 108 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 gcc/insn-notes.def (limited to 'gcc/insn-notes.def') diff --git a/gcc/insn-notes.def b/gcc/insn-notes.def new file mode 100644 index 00000000000..3b164e8629e --- /dev/null +++ b/gcc/insn-notes.def @@ -0,0 +1,108 @@ +/* Insn note definitions. + Copyright (C) 2004 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 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. */ + +/* This file defines all the codes that may appear in the + NOTE_LINE_NUMBER field of a NOTE insn for kinds of notes that are + not line numbers. Source files define DEF_INSN_NOTE appropriately + before including this file. + + We are slowly removing the concept of insn-chain notes from the + compiler. Adding new codes to this file is STRONGLY DISCOURAGED. + If you think you need one, look for other ways to express what you + mean, such as register notes or bits in the basic-block structure. */ + +/* Shorthand. */ +#define INSN_NOTE(NAME) DEF_INSN_NOTE (NOTE_INSN_##NAME) + +/* This note is used to get rid of an insn when it isn't safe to patch + the insn out of the chain. */ +INSN_NOTE (DELETED) + +/* Generated in place of user-declared labels when they are deleted. */ +INSN_NOTE (DELETED_LABEL) + +/* These are used to mark the beginning and end of a lexical block. + See NOTE_BLOCK and reorder_blocks. */ +INSN_NOTE (BLOCK_BEG) +INSN_NOTE (BLOCK_END) + +/* These mark the extremes of a loop. */ +INSN_NOTE (LOOP_BEG) +INSN_NOTE (LOOP_END) + +/* Generated at the place in a loop that `continue' jumps to. */ +INSN_NOTE (LOOP_CONT) +/* Generated at the start of a duplicated exit test. */ +INSN_NOTE (LOOP_VTOP) + +/* This note indicates the start of the real body of the function, + i.e. the point just after all of the parms have been moved into + their homes, etc. */ +INSN_NOTE (FUNCTION_BEG) + +/* This kind of note is generated at the end of the function body, + just before the return insn or return label. In an optimizing + compilation it is deleted by the first jump optimization, after + enabling that optimizer to determine whether control can fall + off the end of the function body without a return statement. */ +INSN_NOTE (FUNCTION_END) + +/* This marks the point immediately after the last prologue insn. */ +INSN_NOTE (PROLOGUE_END) + +/* This marks the point immediately prior to the first epilogue insn. */ +INSN_NOTE (EPILOGUE_BEG) + +/* These note where exception handling regions begin and end. + Uses NOTE_EH_HANDLER to identify the region in question. */ +INSN_NOTE (EH_REGION_BEG) +INSN_NOTE (EH_REGION_END) + +/* Generated whenever a duplicate line number note is output. + For example, one is output after the end of an inline function, + in order to prevent the line containing the inline call from + being counted twice in gcov. */ +INSN_NOTE (REPEATED_LINE_NUMBER) + +/* The location of a variable. */ +INSN_NOTE (VAR_LOCATION) + +/* Record the expected value of a register at a location. Uses + NOTE_EXPECTED_VALUE; stored as (eq (reg) (const_int)). */ +INSN_NOTE (EXPECTED_VALUE) + +/* Record the struct for the following basic block. Uses + NOTE_BASIC_BLOCK. FIXME: Redundant with the basic block pointer + now included in every insn. */ +INSN_NOTE (BASIC_BLOCK) + +/* Record that the current basic block is unlikely to be executed and + should be moved to the UNLIKELY_EXECUTED_TEXT_SECTION. FIXME: Make + this a bit on the basic block structure. */ +INSN_NOTE (UNLIKELY_EXECUTED_CODE) + +/* Mark that a block shouldn't be scheduled. This is currently used + in modulo scheduling. Modulo scheduling adds this note to the + blocks of the modulo-scheduled loops to disable scheduling them in + the later traditional scheduling passes. FIXME: Make this a bit on + the basic block structure. */ +INSN_NOTE (DISABLE_SCHED_OF_BLOCK) + +#undef INSN_NOTE -- cgit v1.2.1