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authorSteven Bosscher <steven@gcc.gnu.org>2010-06-05 20:33:22 +0000
committerSteven Bosscher <steven@gcc.gnu.org>2010-06-05 20:33:22 +0000
commit39dabefd0e5e21b7829ec4ddf811ab19346983d7 (patch)
tree68de2ea9a7798604f2afa24cac397e87b3bf94d7 /gcc/c-gimplify.c
parentad06ee51fe9e658817b79f5db44a431fc1854288 (diff)
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c-common.c: Move to c-family/.
gcc/ChangeLog: * c-common.c: Move to c-family/. * c-common.def: Likewise. * c-common.h: Likewise. * c-cppbuiltin.c: Likewise. * c-dump.c: Likewise. * c-format.c: Likewise. * c-format.h : Likewise. * c-gimplify.c: Likewise. * c-lex.c: Likewise. * c-omp.c: Likewise. * c.opt: Likewise. * c-opts.c: Likewise. * c-pch.c: Likewise. * c-ppoutput.c: Likewise. * c-pragma.c: Likewise. * c-pragma.h: Likewise. * c-pretty-print.c: Likewise. * c-pretty-print.h: Likewise. * c-semantics.c: Likewise. * stub-objc.c: Likewise. * gengtype.c (get_file_langdir): Special-case files in c-family/. (get_output_file_with_visibility): Fix name for c-common.h. * c-config-lang.in: Update paths in gtfiles for files in c-family/. * c-tree.h: Update include path for moved files. * c-lang.c: Likewise. * c-lang.h: Likewise. * c-parser.c: Likewise. * c-convert.c: Likewise. * c-decl.c: Likewise. * c-objc-common.c: Likewise. * configure.ac: Make sure c-family/ exists in the build directory. * configure: Regenerate. * Makefile.in: Update paths for moved files. Regroup files per location and update dependencies. Move generated_files down after ALL_GTFILES_H. * config/spu/spu-c.c: Update paths for moved files. * config/mep/mep-pragma.c: Likewise. * config/darwin-c.c: Likewise. * config/i386/msformat-c.c: Likewise. * config/i386/i386-c.c: Likewise. * config/avr/avr-c.c: Likewise. * config/sol2-c.c: Likewise. * config/ia64/ia64-c.c: Likewise. * config/rs6000/rs6000-c.c: Likewise. * config/arm/arm.c: Likewise. * config/arm/arm-c.c: Likewise. * config/h8300/h8300.c: Likewise. * config/v850/v850-c.c: Likewise. * config/t-darwin: Fix dependencies for moved files. * config/t-sol2: Fix dependencies for moved files. * config/mep/t-mep: Fix dependencies for moved files. * config/ia64/t-ia64: Fix dependencies for moved files. * config/rs6000/t-rs6000: Fix dependencies for moved files. * config/v850/t-v850: Fix dependencies for moved files. * config/v850/t-v850e: Fix dependencies for moved files. * config/m32c/m32c-pragma.c * po/exgettext: Look in c-family/ also. c-family/ChangeLog: * c-common.c: Include gt-c-family-c-common.h. * c-pragma.c: Include gt-c-family-c-pragma.h. objc/ChangeLog: * objc-act.c: Update include path for moved files. * objc-lang.c: Likewise. * config-lang.in: Update paths in gtfiles for files in c-family/. objcp/ChangeLog: * objcp-lang.c: Update include path for moved files. * config-lang.in: Update paths in gtfiles for files in c-family/. cp/ChangeLog: * typeck.c: Update include path for moved files. * decl.c: Likewise. * rtti.c: Likewise. * cp-gimplify.c: Likewise. * cp-lang.c: Likewise. * pt.c: Likewise. * semantics.c: Likewise. * cxx-pretty-print.h: Likewise. * decl2.c: Likewise. * parser.c: Likewise. * cp-objcp-common.c: Likewise. * cp-tree.h: Likewise. * name-lookup.c: Likewise. * lex.c: Likewise. * name-lookup.h: Likewise. * config-lang.in: Update paths in gtfiles for files in c-family/. * Make-lang.in: Likewise. From-SVN: r160330
Diffstat (limited to 'gcc/c-gimplify.c')
-rw-r--r--gcc/c-gimplify.c190
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diff --git a/gcc/c-gimplify.c b/gcc/c-gimplify.c
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-/* Tree lowering pass. This pass gimplifies the tree representation built
- by the C-based front ends. The structure of gimplified, or
- language-independent, trees is dictated by the grammar described in this
- file.
- Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
- Lowering of expressions contributed by Sebastian Pop <s.pop@laposte.net>
- Re-written to support lowering of whole function trees, documentation
- and miscellaneous cleanups by Diego Novillo <dnovillo@redhat.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 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/>. */
-
-#include "config.h"
-#include "system.h"
-#include "coretypes.h"
-#include "tm.h"
-#include "tree.h"
-#include "c-common.h"
-#include "gimple.h"
-#include "basic-block.h"
-#include "tree-flow.h"
-#include "tree-inline.h"
-#include "diagnostic-core.h"
-#include "langhooks.h"
-#include "langhooks-def.h"
-#include "flags.h"
-#include "toplev.h"
-#include "tree-dump.h"
-#include "c-pretty-print.h"
-#include "cgraph.h"
-
-
-/* The gimplification pass converts the language-dependent trees
- (ld-trees) emitted by the parser into language-independent trees
- (li-trees) that are the target of SSA analysis and transformations.
-
- Language-independent trees are based on the SIMPLE intermediate
- representation used in the McCAT compiler framework:
-
- "Designing the McCAT Compiler Based on a Family of Structured
- Intermediate Representations,"
- L. Hendren, C. Donawa, M. Emami, G. Gao, Justiani, and B. Sridharan,
- Proceedings of the 5th International Workshop on Languages and
- Compilers for Parallel Computing, no. 757 in Lecture Notes in
- Computer Science, New Haven, Connecticut, pp. 406-420,
- Springer-Verlag, August 3-5, 1992.
-
- http://www-acaps.cs.mcgill.ca/info/McCAT/McCAT.html
-
- Basically, we walk down gimplifying the nodes that we encounter. As we
- walk back up, we check that they fit our constraints, and copy them
- into temporaries if not. */
-
-/* Gimplification of statement trees. */
-
-/* Convert the tree representation of FNDECL from C frontend trees to
- GENERIC. */
-
-void
-c_genericize (tree fndecl)
-{
- FILE *dump_orig;
- int local_dump_flags;
- struct cgraph_node *cgn;
-
- /* Dump the C-specific tree IR. */
- dump_orig = dump_begin (TDI_original, &local_dump_flags);
- if (dump_orig)
- {
- fprintf (dump_orig, "\n;; Function %s",
- lang_hooks.decl_printable_name (fndecl, 2));
- fprintf (dump_orig, " (%s)\n",
- (!DECL_ASSEMBLER_NAME_SET_P (fndecl) ? "null"
- : IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (fndecl))));
- fprintf (dump_orig, ";; enabled by -%s\n", dump_flag_name (TDI_original));
- fprintf (dump_orig, "\n");
-
- if (local_dump_flags & TDF_RAW)
- dump_node (DECL_SAVED_TREE (fndecl),
- TDF_SLIM | local_dump_flags, dump_orig);
- else
- print_c_tree (dump_orig, DECL_SAVED_TREE (fndecl));
- fprintf (dump_orig, "\n");
-
- dump_end (TDI_original, dump_orig);
- }
-
- /* Dump all nested functions now. */
- cgn = cgraph_node (fndecl);
- for (cgn = cgn->nested; cgn ; cgn = cgn->next_nested)
- c_genericize (cgn->decl);
-}
-
-static void
-add_block_to_enclosing (tree block)
-{
- unsigned i;
- tree enclosing;
- gimple bind;
- VEC(gimple, heap) *stack = gimple_bind_expr_stack ();
-
- for (i = 0; VEC_iterate (gimple, stack, i, bind); i++)
- if (gimple_bind_block (bind))
- break;
-
- enclosing = gimple_bind_block (bind);
- BLOCK_SUBBLOCKS (enclosing) = chainon (BLOCK_SUBBLOCKS (enclosing), block);
-}
-
-/* Genericize a scope by creating a new BIND_EXPR.
- BLOCK is either a BLOCK representing the scope or a chain of _DECLs.
- In the latter case, we need to create a new BLOCK and add it to the
- BLOCK_SUBBLOCKS of the enclosing block.
- BODY is a chain of C _STMT nodes for the contents of the scope, to be
- genericized. */
-
-tree
-c_build_bind_expr (location_t loc, tree block, tree body)
-{
- tree decls, bind;
-
- if (block == NULL_TREE)
- decls = NULL_TREE;
- else if (TREE_CODE (block) == BLOCK)
- decls = BLOCK_VARS (block);
- else
- {
- decls = block;
- if (DECL_ARTIFICIAL (decls))
- block = NULL_TREE;
- else
- {
- block = make_node (BLOCK);
- BLOCK_VARS (block) = decls;
- add_block_to_enclosing (block);
- }
- }
-
- if (!body)
- body = build_empty_stmt (loc);
- if (decls || block)
- {
- bind = build3 (BIND_EXPR, void_type_node, decls, body, block);
- TREE_SIDE_EFFECTS (bind) = 1;
- SET_EXPR_LOCATION (bind, loc);
- }
- else
- bind = body;
-
- return bind;
-}
-
-/* Gimplification of expression trees. */
-
-/* Do C-specific gimplification on *EXPR_P. PRE_P and POST_P are as in
- gimplify_expr. */
-
-int
-c_gimplify_expr (tree *expr_p, gimple_seq *pre_p ATTRIBUTE_UNUSED,
- gimple_seq *post_p ATTRIBUTE_UNUSED)
-{
- enum tree_code code = TREE_CODE (*expr_p);
-
- /* This is handled mostly by gimplify.c, but we have to deal with
- not warning about int x = x; as it is a GCC extension to turn off
- this warning but only if warn_init_self is zero. */
- if (code == DECL_EXPR
- && TREE_CODE (DECL_EXPR_DECL (*expr_p)) == VAR_DECL
- && !DECL_EXTERNAL (DECL_EXPR_DECL (*expr_p))
- && !TREE_STATIC (DECL_EXPR_DECL (*expr_p))
- && (DECL_INITIAL (DECL_EXPR_DECL (*expr_p)) == DECL_EXPR_DECL (*expr_p))
- && !warn_init_self)
- TREE_NO_WARNING (DECL_EXPR_DECL (*expr_p)) = 1;
-
- return GS_UNHANDLED;
-}