--- /dev/null
+/* read-rtl-function.c - Reader for RTL function dumps
+ Copyright (C) 2016-2017 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/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "target.h"
+#include "tree.h"
+#include "diagnostic.h"
+#include "read-md.h"
+#include "rtl.h"
+#include "cfghooks.h"
+#include "stringpool.h"
+#include "function.h"
+#include "tree-cfg.h"
+#include "cfg.h"
+#include "basic-block.h"
+#include "cfgrtl.h"
+#include "memmodel.h"
+#include "emit-rtl.h"
+#include "cgraph.h"
+#include "tree-pass.h"
+#include "toplev.h"
+#include "varasm.h"
+#include "read-rtl-function.h"
+#include "selftest.h"
+#include "selftest-rtl.h"
+
+/* Forward decls. */
+class function_reader;
+class fixup;
+
+/* Edges are recorded when parsing the "insn-chain" directive,
+ and created at the end when all the blocks ought to exist.
+ This struct records an "edge-from" or "edge-to" directive seen
+ at LOC, which will be turned into an actual CFG edge once
+ the "insn-chain" is fully parsed. */
+
+struct deferred_edge
+{
+ deferred_edge (file_location loc, int src_bb_idx, int dest_bb_idx, int flags)
+ : m_loc (loc), m_src_bb_idx (src_bb_idx), m_dest_bb_idx (dest_bb_idx),
+ m_flags (flags)
+ {}
+
+ file_location m_loc;
+ int m_src_bb_idx;
+ int m_dest_bb_idx;
+ int m_flags;
+};
+
+/* Subclass of rtx_reader for reading function dumps. */
+
+class function_reader : public rtx_reader
+{
+ public:
+ function_reader ();
+ ~function_reader ();
+
+ /* Overridden vfuncs of class md_reader. */
+ void handle_unknown_directive (file_location, const char *) FINAL OVERRIDE;
+
+ /* Overridden vfuncs of class rtx_reader. */
+ rtx read_rtx_operand (rtx x, int idx) FINAL OVERRIDE;
+ void handle_any_trailing_information (rtx x) FINAL OVERRIDE;
+ rtx postprocess (rtx) FINAL OVERRIDE;
+ const char *finalize_string (char *stringbuf) FINAL OVERRIDE;
+
+ rtx_insn **get_insn_by_uid (int uid);
+ tree parse_mem_expr (const char *desc);
+
+ private:
+ void parse_function ();
+ void create_function ();
+ void parse_param ();
+ void parse_insn_chain ();
+ void parse_block ();
+ int parse_bb_idx ();
+ void parse_edge (basic_block block, bool from);
+ rtx_insn *parse_insn (file_location loc, const char *name);
+ void parse_cfg (file_location loc);
+ void parse_crtl (file_location loc);
+ void create_edges ();
+
+ int parse_enum_value (int num_values, const char *const *strings);
+
+ void read_rtx_operand_u (rtx x, int idx);
+ void read_rtx_operand_i_or_n (rtx x, int idx, char format_char);
+ rtx read_rtx_operand_r (rtx x);
+ void extra_parsing_for_operand_code_0 (rtx x, int idx);
+
+ void add_fixup_insn_uid (file_location loc, rtx insn, int operand_idx,
+ int insn_uid);
+
+ void add_fixup_note_insn_basic_block (file_location loc, rtx insn,
+ int operand_idx, int bb_idx);
+
+ void add_fixup_source_location (file_location loc, rtx_insn *insn,
+ const char *filename, int lineno);
+
+ void add_fixup_expr (file_location loc, rtx x,
+ const char *desc);
+
+ rtx consolidate_singletons (rtx x);
+ rtx parse_rtx ();
+ void maybe_read_location (rtx_insn *insn);
+
+ void handle_insn_uids ();
+ void apply_fixups ();
+
+ private:
+ struct uid_hash : int_hash <int, -1, -2> {};
+ hash_map<uid_hash, rtx_insn *> m_insns_by_uid;
+ auto_vec<fixup *> m_fixups;
+ rtx_insn *m_first_insn;
+ auto_vec<tree> m_fake_scope;
+ char *m_name;
+ bool m_have_crtl_directive;
+ basic_block m_bb_to_insert_after;
+ auto_vec <deferred_edge> m_deferred_edges;
+ int m_highest_bb_idx;
+};
+
+/* Abstract base class for recording post-processing steps that must be
+ done after reading a .rtl file. */
+
+class fixup
+{
+ public:
+ /* Constructor for a fixup at LOC affecting X. */
+ fixup (file_location loc, rtx x)
+ : m_loc (loc), m_rtx (x)
+ {}
+ virtual ~fixup () {}
+
+ virtual void apply (function_reader *reader) const = 0;
+
+ protected:
+ file_location m_loc;
+ rtx m_rtx;
+};
+
+/* An abstract subclass of fixup for post-processing steps that
+ act on a specific operand of a specific instruction. */
+
+class operand_fixup : public fixup
+{
+ public:
+ /* Constructor for a fixup at LOC affecting INSN's operand
+ with index OPERAND_IDX. */
+ operand_fixup (file_location loc, rtx insn, int operand_idx)
+ : fixup (loc, insn), m_operand_idx (operand_idx)
+ {}
+
+ protected:
+ int m_operand_idx;
+};
+
+/* A concrete subclass of operand_fixup: fixup an rtx_insn *
+ field based on an integer UID. */
+
+class fixup_insn_uid : public operand_fixup
+{
+ public:
+ /* Constructor for a fixup at LOC affecting INSN's operand
+ with index OPERAND_IDX. Record INSN_UID as the uid. */
+ fixup_insn_uid (file_location loc, rtx insn, int operand_idx, int insn_uid)
+ : operand_fixup (loc, insn, operand_idx),
+ m_insn_uid (insn_uid)
+ {}
+
+ void apply (function_reader *reader) const;
+
+ private:
+ int m_insn_uid;
+};
+
+/* A concrete subclass of operand_fixup: fix up a
+ NOTE_INSN_BASIC_BLOCK based on an integer block ID. */
+
+class fixup_note_insn_basic_block : public operand_fixup
+{
+ public:
+ fixup_note_insn_basic_block (file_location loc, rtx insn, int operand_idx,
+ int bb_idx)
+ : operand_fixup (loc, insn, operand_idx),
+ m_bb_idx (bb_idx)
+ {}
+
+ void apply (function_reader *reader) const;
+
+ private:
+ int m_bb_idx;
+};
+
+/* A concrete subclass of fixup (not operand_fixup): fix up
+ the expr of an rtx (REG or MEM) based on a textual dump. */
+
+class fixup_expr : public fixup
+{
+ public:
+ fixup_expr (file_location loc, rtx x, const char *desc)
+ : fixup (loc, x),
+ m_desc (xstrdup (desc))
+ {}
+
+ ~fixup_expr () { free (m_desc); }
+
+ void apply (function_reader *reader) const;
+
+ private:
+ char *m_desc;
+};
+
+/* Return a textual description of the operand of INSN with
+ index OPERAND_IDX. */
+
+static const char *
+get_operand_name (rtx insn, int operand_idx)
+{
+ gcc_assert (is_a <rtx_insn *> (insn));
+ switch (operand_idx)
+ {
+ case 0:
+ return "PREV_INSN";
+ case 1:
+ return "NEXT_INSN";
+ default:
+ return NULL;
+ }
+}
+
+/* Fixup an rtx_insn * field based on an integer UID, as read by READER. */
+
+void
+fixup_insn_uid::apply (function_reader *reader) const
+{
+ rtx_insn **insn_from_uid = reader->get_insn_by_uid (m_insn_uid);
+ if (insn_from_uid)
+ XEXP (m_rtx, m_operand_idx) = *insn_from_uid;
+ else
+ {
+ const char *op_name = get_operand_name (m_rtx, m_operand_idx);
+ if (op_name)
+ error_at (m_loc,
+ "insn with UID %i not found for operand %i (`%s') of insn %i",
+ m_insn_uid, m_operand_idx, op_name, INSN_UID (m_rtx));
+ else
+ error_at (m_loc,
+ "insn with UID %i not found for operand %i of insn %i",
+ m_insn_uid, m_operand_idx, INSN_UID (m_rtx));
+ }
+}
+
+/* Fix up a NOTE_INSN_BASIC_BLOCK based on an integer block ID. */
+
+void
+fixup_note_insn_basic_block::apply (function_reader *) const
+{
+ basic_block bb = BASIC_BLOCK_FOR_FN (cfun, m_bb_idx);
+ gcc_assert (bb);
+ NOTE_BASIC_BLOCK (m_rtx) = bb;
+}
+
+/* Fix up the expr of an rtx (REG or MEM) based on a textual dump
+ read by READER. */
+
+void
+fixup_expr::apply (function_reader *reader) const
+{
+ tree expr = reader->parse_mem_expr (m_desc);
+ switch (GET_CODE (m_rtx))
+ {
+ case REG:
+ set_reg_attrs_for_decl_rtl (expr, m_rtx);
+ break;
+ case MEM:
+ set_mem_expr (m_rtx, expr);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+}
+
+/* Strip trailing whitespace from DESC. */
+
+static void
+strip_trailing_whitespace (char *desc)
+{
+ char *terminator = desc + strlen (desc);
+ while (desc < terminator)
+ {
+ terminator--;
+ if (ISSPACE (*terminator))
+ *terminator = '\0';
+ else
+ break;
+ }
+}
+
+/* Return the numeric value n for GET_NOTE_INSN_NAME (n) for STRING,
+ or fail if STRING isn't recognized. */
+
+static int
+parse_note_insn_name (const char *string)
+{
+ for (int i = 0; i < NOTE_INSN_MAX; i++)
+ if (0 == strcmp (string, GET_NOTE_INSN_NAME (i)))
+ return i;
+ fatal_with_file_and_line ("unrecognized NOTE_INSN name: `%s'", string);
+}
+
+/* Return the register number for NAME, or return -1 if it isn't
+ recognized. */
+
+static int
+lookup_reg_by_dump_name (const char *name)
+{
+ for (int i = 0; i < FIRST_PSEUDO_REGISTER; i++)
+ if (reg_names[i][0]
+ && ! strcmp (name, reg_names[i]))
+ return i;
+
+ /* Also lookup virtuals. */
+ if (!strcmp (name, "virtual-incoming-args"))
+ return VIRTUAL_INCOMING_ARGS_REGNUM;
+ if (!strcmp (name, "virtual-stack-vars"))
+ return VIRTUAL_STACK_VARS_REGNUM;
+ if (!strcmp (name, "virtual-stack-dynamic"))
+ return VIRTUAL_STACK_DYNAMIC_REGNUM;
+ if (!strcmp (name, "virtual-outgoing-args"))
+ return VIRTUAL_OUTGOING_ARGS_REGNUM;
+ if (!strcmp (name, "virtual-cfa"))
+ return VIRTUAL_CFA_REGNUM;
+ if (!strcmp (name, "virtual-preferred-stack-boundary"))
+ return VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM;
+ /* TODO: handle "virtual-reg-%d". */
+
+ /* In compact mode, pseudos are printed with '< and '>' wrapping the regno,
+ offseting it by (LAST_VIRTUAL_REGISTER + 1), so that the
+ first non-virtual pseudo is dumped as "<0>". */
+ if (name[0] == '<' && name[strlen (name) - 1] == '>')
+ {
+ int dump_num = atoi (name + 1);
+ return dump_num + LAST_VIRTUAL_REGISTER + 1;
+ }
+
+ /* Not found. */
+ return -1;
+}
+
+/* class function_reader : public rtx_reader */
+
+/* function_reader's constructor. */
+
+function_reader::function_reader ()
+: rtx_reader (true),
+ m_first_insn (NULL),
+ m_name (NULL),
+ m_have_crtl_directive (false),
+ m_bb_to_insert_after (NULL),
+ m_highest_bb_idx (EXIT_BLOCK)
+{
+}
+
+/* function_reader's destructor. */
+
+function_reader::~function_reader ()
+{
+ int i;
+ fixup *f;
+ FOR_EACH_VEC_ELT (m_fixups, i, f)
+ delete f;
+
+ free (m_name);
+}
+
+/* Implementation of rtx_reader::handle_unknown_directive,
+ for parsing the remainder of a directive with name NAME
+ seen at START_LOC.
+
+ Require a top-level "function" directive, as emitted by
+ print_rtx_function, and parse it. */
+
+void
+function_reader::handle_unknown_directive (file_location start_loc,
+ const char *name)
+{
+ if (strcmp (name, "function"))
+ fatal_at (start_loc, "expected 'function'");
+
+ parse_function ();
+}
+
+/* Parse the output of print_rtx_function (or hand-written data in the
+ same format), having already parsed the "(function" heading, and
+ finishing immediately before the final ")".
+
+ The "param" and "crtl" clauses are optional. */
+
+void
+function_reader::parse_function ()
+{
+ m_name = xstrdup (read_string (0));
+
+ create_function ();
+
+ while (1)
+ {
+ int c = read_skip_spaces ();
+ if (c == ')')
+ {
+ unread_char (c);
+ break;
+ }
+ unread_char (c);
+ require_char ('(');
+ file_location loc = get_current_location ();
+ struct md_name directive;
+ read_name (&directive);
+ if (strcmp (directive.string, "param") == 0)
+ parse_param ();
+ else if (strcmp (directive.string, "insn-chain") == 0)
+ parse_insn_chain ();
+ else if (strcmp (directive.string, "crtl") == 0)
+ parse_crtl (loc);
+ else
+ fatal_with_file_and_line ("unrecognized directive: %s",
+ directive.string);
+ }
+
+ handle_insn_uids ();
+
+ apply_fixups ();
+
+ /* Rebuild the JUMP_LABEL field of any JUMP_INSNs in the chain, and the
+ LABEL_NUSES of any CODE_LABELs.
+
+ This has to happen after apply_fixups, since only after then do
+ LABEL_REFs have their label_ref_label set up. */
+ rebuild_jump_labels (get_insns ());
+
+ crtl->init_stack_alignment ();
+}
+
+/* Set up state for the function *before* fixups are applied.
+
+ Create "cfun" and a decl for the function.
+ By default, every function decl is hardcoded as
+ int test_1 (int i, int j, int k);
+ Set up various other state:
+ - the cfg and basic blocks (edges are created later, *after* fixups
+ are applied).
+ - add the function to the callgraph. */
+
+void
+function_reader::create_function ()
+{
+ /* We start in cfgrtl mode, rather than cfglayout mode. */
+ rtl_register_cfg_hooks ();
+
+ /* Create cfun. */
+ tree fn_name = get_identifier (m_name ? m_name : "test_1");
+ tree int_type = integer_type_node;
+ tree return_type = int_type;
+ tree arg_types[3] = {int_type, int_type, int_type};
+ tree fn_type = build_function_type_array (return_type, 3, arg_types);
+ tree fndecl = build_decl_stat (UNKNOWN_LOCATION, FUNCTION_DECL, fn_name,
+ fn_type);
+ tree resdecl = build_decl (UNKNOWN_LOCATION, RESULT_DECL, NULL_TREE,
+ return_type);
+ DECL_ARTIFICIAL (resdecl) = 1;
+ DECL_IGNORED_P (resdecl) = 1;
+ DECL_RESULT (fndecl) = resdecl;
+ allocate_struct_function (fndecl, false);
+ /* This sets cfun. */
+
+ current_function_decl = fndecl;
+
+ cfun->curr_properties = (PROP_cfg | PROP_rtl);
+
+ /* Do we need this to force cgraphunit.c to output the function? */
+ DECL_EXTERNAL (fndecl) = 0;
+ DECL_PRESERVE_P (fndecl) = 1;
+
+ /* Add to cgraph. */
+ cgraph_node::finalize_function (fndecl, false);
+
+ /* Create bare-bones cfg. This creates the entry and exit blocks. */
+ init_empty_tree_cfg_for_function (cfun);
+ ENTRY_BLOCK_PTR_FOR_FN (cfun)->flags |= BB_RTL;
+ EXIT_BLOCK_PTR_FOR_FN (cfun)->flags |= BB_RTL;
+ init_rtl_bb_info (ENTRY_BLOCK_PTR_FOR_FN (cfun));
+ init_rtl_bb_info (EXIT_BLOCK_PTR_FOR_FN (cfun));
+ m_bb_to_insert_after = ENTRY_BLOCK_PTR_FOR_FN (cfun);
+
+}
+
+/* Look within the the params of FNDECL for a param named NAME.
+ Return NULL_TREE if one isn't found. */
+
+static tree
+find_param_by_name (tree fndecl, const char *name)
+{
+ for (tree arg = DECL_ARGUMENTS (fndecl); arg; arg = TREE_CHAIN (arg))
+ if (strcmp (name, IDENTIFIER_POINTER (DECL_NAME (arg))) == 0)
+ return arg;
+ return NULL_TREE;
+}
+
+/* Parse the content of a "param" directive, having already parsed the
+ "(param". Consume the trailing ')'. */
+
+void
+function_reader::parse_param ()
+{
+ require_char_ws ('"');
+ file_location loc = get_current_location ();
+ char *name = read_quoted_string ();
+
+ /* Lookup param by name. */
+ tree t_param = find_param_by_name (cfun->decl, name);
+ if (!t_param)
+ fatal_at (loc, "param not found: %s", name);
+
+ /* Parse DECL_RTL. */
+ require_char_ws ('(');
+ require_word_ws ("DECL_RTL");
+ DECL_WRTL_CHECK (t_param)->decl_with_rtl.rtl = parse_rtx ();
+ require_char_ws (')');
+
+ /* Parse DECL_RTL_INCOMING. */
+ require_char_ws ('(');
+ require_word_ws ("DECL_RTL_INCOMING");
+ DECL_INCOMING_RTL (t_param) = parse_rtx ();
+ require_char_ws (')');
+
+ require_char_ws (')');
+}
+
+/* Parse zero or more child insn elements within an
+ "insn-chain" element. Consume the trailing ')'. */
+
+void
+function_reader::parse_insn_chain ()
+{
+ while (1)
+ {
+ int c = read_skip_spaces ();
+ file_location loc = get_current_location ();
+ if (c == ')')
+ break;
+ else if (c == '(')
+ {
+ struct md_name directive;
+ read_name (&directive);
+ if (strcmp (directive.string, "block") == 0)
+ parse_block ();
+ else
+ parse_insn (loc, directive.string);
+ }
+ else
+ fatal_at (loc, "expected '(' or ')'");
+ }
+
+ create_edges ();
+}
+
+/* Parse zero or more child directives (edges and insns) within a
+ "block" directive, having already parsed the "(block " heading.
+ Consume the trailing ')'. */
+
+void
+function_reader::parse_block ()
+{
+ /* Parse the index value from the dump. This will be an integer;
+ we don't support "entry" or "exit" here (unlike for edges). */
+ struct md_name name;
+ read_name (&name);
+ int bb_idx = atoi (name.string);
+
+ /* The term "index" has two meanings for basic blocks in a CFG:
+ (a) the "index" field within struct basic_block_def.
+ (b) the index of a basic_block within the cfg's x_basic_block_info
+ vector, as accessed via BASIC_BLOCK_FOR_FN.
+
+ These can get out-of-sync when basic blocks are optimized away.
+ They get back in sync by "compact_blocks".
+ We reconstruct cfun->cfg->x_basic_block_info->m_vecdata with NULL
+ values in it for any missing basic blocks, so that (a) == (b) for
+ all of the blocks we create. The doubly-linked list of basic
+ blocks (next_bb/prev_bb) skips over these "holes". */
+
+ if (m_highest_bb_idx < bb_idx)
+ m_highest_bb_idx = bb_idx;
+
+ size_t new_size = m_highest_bb_idx + 1;
+ if (basic_block_info_for_fn (cfun)->length () < new_size)
+ vec_safe_grow_cleared (basic_block_info_for_fn (cfun), new_size);
+
+ last_basic_block_for_fn (cfun) = new_size;
+
+ /* Create the basic block.
+
+ We can't call create_basic_block and use the regular RTL block-creation
+ hooks, since this creates NOTE_INSN_BASIC_BLOCK instances. We don't
+ want to do that; we want to use the notes we were provided with. */
+ basic_block bb = alloc_block ();
+ init_rtl_bb_info (bb);
+ bb->index = bb_idx;
+ bb->flags = BB_NEW | BB_RTL;
+ link_block (bb, m_bb_to_insert_after);
+ m_bb_to_insert_after = bb;
+
+ n_basic_blocks_for_fn (cfun)++;
+ SET_BASIC_BLOCK_FOR_FN (cfun, bb_idx, bb);
+ BB_SET_PARTITION (bb, BB_UNPARTITIONED);
+
+ /* Handle insns, edge-from and edge-to directives. */
+ while (1)
+ {
+ int c = read_skip_spaces ();
+ file_location loc = get_current_location ();
+ if (c == ')')
+ break;
+ else if (c == '(')
+ {
+ struct md_name directive;
+ read_name (&directive);
+ if (strcmp (directive.string, "edge-from") == 0)
+ parse_edge (bb, true);
+ else if (strcmp (directive.string, "edge-to") == 0)
+ parse_edge (bb, false);
+ else
+ {
+ rtx_insn *insn = parse_insn (loc, directive.string);
+ set_block_for_insn (insn, bb);
+ if (!BB_HEAD (bb))
+ BB_HEAD (bb) = insn;
+ BB_END (bb) = insn;
+ }
+ }
+ else
+ fatal_at (loc, "expected '(' or ')'");
+ }
+}
+
+/* Subroutine of function_reader::parse_edge.
+ Parse a basic block index, handling "entry" and "exit". */
+
+int
+function_reader::parse_bb_idx ()
+{
+ struct md_name name;
+ read_name (&name);
+ if (strcmp (name.string, "entry") == 0)
+ return ENTRY_BLOCK;
+ if (strcmp (name.string, "exit") == 0)
+ return EXIT_BLOCK;
+ return atoi (name.string);
+}
+
+/* Subroutine of parse_edge_flags.
+ Parse TOK, a token such as "FALLTHRU", converting to the flag value.
+ Issue an error if the token is unrecognized. */
+
+static int
+parse_edge_flag_token (const char *tok)
+{
+#define DEF_EDGE_FLAG(NAME,IDX) \
+ do { \
+ if (strcmp (tok, #NAME) == 0) \
+ return EDGE_##NAME; \
+ } while (0);
+#include "cfg-flags.def"
+#undef DEF_EDGE_FLAG
+ error ("unrecognized edge flag: '%s'", tok);
+ return 0;
+}
+
+/* Subroutine of function_reader::parse_edge.
+ Parse STR and convert to a flag value (or issue an error).
+ The parser uses strtok and hence modifiers STR in-place. */
+
+static int
+parse_edge_flags (char *str)
+{
+ int result = 0;
+
+ char *tok = strtok (str, "| ");
+ while (tok)
+ {
+ result |= parse_edge_flag_token (tok);
+ tok = strtok (NULL, "| ");
+ }
+
+ return result;
+}
+
+/* Parse an "edge-from" or "edge-to" directive within the "block"
+ directive for BLOCK, having already parsed the "(edge" heading.
+ Consume the final ")". Record the edge within m_deferred_edges.
+ FROM is true for an "edge-from" directive, false for an "edge-to"
+ directive. */
+
+void
+function_reader::parse_edge (basic_block block, bool from)
+{
+ gcc_assert (block);
+ int this_bb_idx = block->index;
+ file_location loc = get_current_location ();
+ int other_bb_idx = parse_bb_idx ();
+
+ /* "(edge-from 2)" means src = 2, dest = this_bb_idx, whereas
+ "(edge-to 3)" means src = this_bb_idx, dest = 3. */
+ int src_idx = from ? other_bb_idx : this_bb_idx;
+ int dest_idx = from ? this_bb_idx : other_bb_idx;
+
+ /* Optional "(flags)". */
+ int flags = 0;
+ int c = read_skip_spaces ();
+ if (c == '(')
+ {
+ require_word_ws ("flags");
+ require_char_ws ('"');
+ char *str = read_quoted_string ();
+ flags = parse_edge_flags (str);
+ require_char_ws (')');
+ }
+ else
+ unread_char (c);
+
+ require_char_ws (')');
+
+ /* This BB already exists, but the other BB might not yet.
+ For now, save the edges, and create them at the end of insn-chain
+ processing. */
+ /* For now, only process the (edge-from) to this BB, and (edge-to)
+ that go to the exit block.
+ FIXME: we don't yet verify that the edge-from and edge-to directives
+ are consistent. */
+ if (from || dest_idx == EXIT_BLOCK)
+ m_deferred_edges.safe_push (deferred_edge (loc, src_idx, dest_idx, flags));
+}
+
+/* Parse an rtx instruction, having parsed the opening and parenthesis, and
+ name NAME, seen at START_LOC, by calling read_rtx_code, calling
+ set_first_insn and set_last_insn as appropriate, and
+ adding the insn to the insn chain.
+ Consume the trailing ')'. */
+
+rtx_insn *
+function_reader::parse_insn (file_location start_loc, const char *name)
+{
+ rtx x = read_rtx_code (name);
+ if (!x)
+ fatal_at (start_loc, "expected insn type; got '%s'", name);
+ rtx_insn *insn = dyn_cast <rtx_insn *> (x);
+ if (!insn)
+ fatal_at (start_loc, "expected insn type; got '%s'", name);
+
+ /* Consume the trailing ')'. */
+ require_char_ws (')');
+
+ rtx_insn *last_insn = get_last_insn ();
+
+ /* Add "insn" to the insn chain. */
+ if (last_insn)
+ {
+ gcc_assert (NEXT_INSN (last_insn) == NULL);
+ SET_NEXT_INSN (last_insn) = insn;
+ }
+ SET_PREV_INSN (insn) = last_insn;
+
+ /* Add it to the sequence. */
+ set_last_insn (insn);
+ if (!m_first_insn)
+ {
+ m_first_insn = insn;
+ set_first_insn (insn);
+ }
+
+ if (rtx_code_label *label = dyn_cast <rtx_code_label *> (insn))
+ maybe_set_max_label_num (label);
+
+ return insn;
+}
+
+/* Postprocessing subroutine for parse_insn_chain: all the basic blocks
+ should have been created by now; create the edges that were seen. */
+
+void
+function_reader::create_edges ()
+{
+ int i;
+ deferred_edge *de;
+ FOR_EACH_VEC_ELT (m_deferred_edges, i, de)
+ {
+ /* The BBs should already have been created by parse_block. */
+ basic_block src = BASIC_BLOCK_FOR_FN (cfun, de->m_src_bb_idx);
+ if (!src)
+ fatal_at (de->m_loc, "error: block index %i not found",
+ de->m_src_bb_idx);
+ basic_block dst = BASIC_BLOCK_FOR_FN (cfun, de->m_dest_bb_idx);
+ if (!dst)
+ fatal_at (de->m_loc, "error: block with index %i not found",
+ de->m_dest_bb_idx);
+ unchecked_make_edge (src, dst, de->m_flags);
+ }
+}
+
+/* Parse a "crtl" directive, having already parsed the "(crtl" heading
+ at location LOC.
+ Consume the final ")". */
+
+void
+function_reader::parse_crtl (file_location loc)
+{
+ if (m_have_crtl_directive)
+ error_at (loc, "more than one 'crtl' directive");
+ m_have_crtl_directive = true;
+
+ /* return_rtx. */
+ require_char_ws ('(');
+ require_word_ws ("return_rtx");
+ crtl->return_rtx = parse_rtx ();
+ require_char_ws (')');
+
+ require_char_ws (')');
+}
+
+/* Parse operand IDX of X, returning X, or an equivalent rtx
+ expression (for consolidating singletons).
+ This is an overridden implementation of rtx_reader::read_rtx_operand for
+ function_reader, handling various extra data printed by print_rtx,
+ and sometimes calling the base class implementation. */
+
+rtx
+function_reader::read_rtx_operand (rtx x, int idx)
+{
+ RTX_CODE code = GET_CODE (x);
+ const char *format_ptr = GET_RTX_FORMAT (code);
+ const char format_char = format_ptr[idx];
+ struct md_name name;
+
+ /* Override the regular parser for some format codes. */
+ switch (format_char)
+ {
+ case 'e':
+ if (idx == 7 && CALL_P (x))
+ {
+ m_in_call_function_usage = true;
+ return rtx_reader::read_rtx_operand (x, idx);
+ m_in_call_function_usage = false;
+ }
+ else
+ return rtx_reader::read_rtx_operand (x, idx);
+ break;
+
+ case 'u':
+ read_rtx_operand_u (x, idx);
+ /* Don't run regular parser for 'u'. */
+ return x;
+
+ case 'i':
+ case 'n':
+ read_rtx_operand_i_or_n (x, idx, format_char);
+ /* Don't run regular parser for these codes. */
+ return x;
+
+ case 'B':
+ gcc_assert (is_compact ());
+ /* Compact mode doesn't store BBs. */
+ /* Don't run regular parser. */
+ return x;
+
+ case 'r':
+ /* Don't run regular parser for 'r'. */
+ return read_rtx_operand_r (x);
+
+ default:
+ break;
+ }
+
+ /* Call base class implementation. */
+ x = rtx_reader::read_rtx_operand (x, idx);
+
+ /* Handle any additional parsing needed to handle what the dump
+ could contain. */
+ switch (format_char)
+ {
+ case '0':
+ extra_parsing_for_operand_code_0 (x, idx);
+ break;
+
+ case 'w':
+ if (!is_compact ())
+ {
+ /* Strip away the redundant hex dump of the value. */
+ require_char_ws ('[');
+ read_name (&name);
+ require_char_ws (']');
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return x;
+}
+
+/* Parse operand IDX of X, of code 'u', when reading function dumps.
+
+ The RTL file recorded the ID of an insn (or 0 for NULL); we
+ must store this as a pointer, but the insn might not have
+ been loaded yet. Store the ID away for now, via a fixup. */
+
+void
+function_reader::read_rtx_operand_u (rtx x, int idx)
+{
+ /* In compact mode, the PREV/NEXT insn uids are not dumped, so skip
+ the "uu" when reading. */
+ if (is_compact () && GET_CODE (x) != LABEL_REF)
+ return;
+
+ struct md_name name;
+ file_location loc = read_name (&name);
+ int insn_id = atoi (name.string);
+ if (insn_id)
+ add_fixup_insn_uid (loc, x, idx, insn_id);
+}
+
+/* Read a name, looking for a match against a string found in array
+ STRINGS of size NUM_VALUES.
+ Return the index of the the matched string, or emit an error. */
+
+int
+function_reader::parse_enum_value (int num_values, const char *const *strings)
+{
+ struct md_name name;
+ read_name (&name);
+ for (int i = 0; i < num_values; i++)
+ {
+ if (strcmp (name.string, strings[i]) == 0)
+ return i;
+ }
+ error ("unrecognized enum value: '%s'", name.string);
+ return 0;
+}
+
+/* Parse operand IDX of X, of code 'i' or 'n' (as specified by FORMAT_CHAR).
+ Special-cased handling of these, for reading function dumps. */
+
+void
+function_reader::read_rtx_operand_i_or_n (rtx x, int idx,
+ char format_char)
+{
+ /* Handle some of the extra information that print_rtx
+ can write out for these cases. */
+ /* print_rtx only writes out operand 5 for notes
+ for NOTE_KIND values NOTE_INSN_DELETED_LABEL
+ and NOTE_INSN_DELETED_DEBUG_LABEL. */
+ if (idx == 5 && NOTE_P (x))
+ return;
+
+ if (idx == 4 && INSN_P (x))
+ {
+ maybe_read_location (as_a <rtx_insn *> (x));
+ return;
+ }
+
+ /* INSN_CODEs aren't printed in compact mode, so don't attempt to
+ parse them. */
+ if (is_compact ()
+ && INSN_P (x)
+ && &INSN_CODE (x) == &XINT (x, idx))
+ {
+ INSN_CODE (x) = -1;
+ return;
+ }
+
+ /* Handle UNSPEC and UNSPEC_VOLATILE's operand 1. */
+#if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
+ if (idx == 1
+ && GET_CODE (x) == UNSPEC_VOLATILE)
+ {
+ XINT (x, 1)
+ = parse_enum_value (NUM_UNSPECV_VALUES, unspecv_strings);
+ return;
+ }
+#endif
+#if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
+ if (idx == 1
+ && (GET_CODE (x) == UNSPEC
+ || GET_CODE (x) == UNSPEC_VOLATILE))
+ {
+ XINT (x, 1)
+ = parse_enum_value (NUM_UNSPEC_VALUES, unspec_strings);
+ return;
+ }
+#endif
+
+ struct md_name name;
+ read_name (&name);
+ int value;
+ if (format_char == 'n')
+ value = parse_note_insn_name (name.string);
+ else
+ value = atoi (name.string);
+ XINT (x, idx) = value;
+}
+
+/* Parse the 'r' operand of X, returning X, or an equivalent rtx
+ expression (for consolidating singletons).
+ Special-cased handling of code 'r' for reading function dumps. */
+
+rtx
+function_reader::read_rtx_operand_r (rtx x)
+{
+ struct md_name name;
+ file_location loc = read_name (&name);
+ int regno = lookup_reg_by_dump_name (name.string);
+ if (regno == -1)
+ fatal_at (loc, "unrecognized register: '%s'", name.string);
+
+ set_regno_raw (x, regno, 1);
+
+ /* Consolidate singletons. */
+ x = consolidate_singletons (x);
+
+ ORIGINAL_REGNO (x) = regno;
+
+ /* Parse extra stuff at end of 'r'.
+ We may have zero, one, or two sections marked by square
+ brackets. */
+ int ch = read_skip_spaces ();
+ bool expect_original_regno = false;
+ if (ch == '[')
+ {
+ file_location loc = get_current_location ();
+ char *desc = read_until ("]", true);
+ strip_trailing_whitespace (desc);
+ const char *desc_start = desc;
+ /* If ORIGINAL_REGNO (rtx) != regno, we will have:
+ "orig:%i", ORIGINAL_REGNO (rtx).
+ Consume it, we don't set ORIGINAL_REGNO, since we can
+ get that from the 2nd copy later. */
+ if (0 == strncmp (desc, "orig:", 5))
+ {
+ expect_original_regno = true;
+ desc_start += 5;
+ /* Skip to any whitespace following the integer. */
+ const char *space = strchr (desc_start, ' ');
+ if (space)
+ desc_start = space + 1;
+ }
+ /* Any remaining text may be the REG_EXPR. Alternatively we have
+ no REG_ATTRS, and instead we have ORIGINAL_REGNO. */
+ if (ISDIGIT (*desc_start))
+ {
+ /* Assume we have ORIGINAL_REGNO. */
+ ORIGINAL_REGNO (x) = atoi (desc_start);
+ }
+ else
+ {
+ /* Assume we have REG_EXPR. */
+ add_fixup_expr (loc, x, desc_start);
+ }
+ free (desc);
+ }
+ else
+ unread_char (ch);
+ if (expect_original_regno)
+ {
+ require_char_ws ('[');
+ char *desc = read_until ("]", true);
+ ORIGINAL_REGNO (x) = atoi (desc);
+ free (desc);
+ }
+
+ return x;
+}
+
+/* Additional parsing for format code '0' in dumps, handling a variety
+ of special-cases in print_rtx, when parsing operand IDX of X. */
+
+void
+function_reader::extra_parsing_for_operand_code_0 (rtx x, int idx)
+{
+ RTX_CODE code = GET_CODE (x);
+ int c;
+ struct md_name name;
+
+ if (idx == 1 && code == SYMBOL_REF)
+ {
+ /* Possibly wrote " [flags %#x]", SYMBOL_REF_FLAGS (in_rtx). */
+ c = read_skip_spaces ();
+ if (c == '[')
+ {
+ file_location loc = read_name (&name);
+ if (strcmp (name.string, "flags"))
+ error_at (loc, "was expecting `%s'", "flags");
+ read_name (&name);
+ SYMBOL_REF_FLAGS (x) = strtol (name.string, NULL, 16);
+
+ /* We can't reconstruct SYMBOL_REF_BLOCK; set it to NULL. */
+ if (SYMBOL_REF_HAS_BLOCK_INFO_P (x))
+ SYMBOL_REF_BLOCK (x) = NULL;
+
+ require_char (']');
+ }
+ else
+ unread_char (c);
+
+ /* If X had a non-NULL SYMBOL_REF_DECL,
+ rtx_writer::print_rtx_operand_code_0 would have dumped it
+ using print_node_brief.
+ Skip the content for now. */
+ c = read_skip_spaces ();
+ if (c == '<')
+ {
+ while (1)
+ {
+ char ch = read_char ();
+ if (ch == '>')
+ break;
+ }
+ }
+ else
+ unread_char (c);
+ }
+ else if (idx == 3 && code == NOTE)
+ {
+ /* Note-specific data appears for operand 3, which annoyingly
+ is before the enum specifying which kind of note we have
+ (operand 4). */
+ c = read_skip_spaces ();
+ if (c == '[')
+ {
+ /* Possibly data for a NOTE_INSN_BASIC_BLOCK, of the form:
+ [bb %d]. */
+ file_location bb_loc = read_name (&name);
+ if (strcmp (name.string, "bb"))
+ error_at (bb_loc, "was expecting `%s'", "bb");
+ read_name (&name);
+ int bb_idx = atoi (name.string);
+ add_fixup_note_insn_basic_block (bb_loc, x, idx,
+ bb_idx);
+ require_char_ws (']');
+ }
+ else
+ unread_char (c);
+ }
+}
+
+/* Implementation of rtx_reader::handle_any_trailing_information.
+ Handle the various additional information that print-rtl.c can
+ write after the regular fields, when parsing X. */
+
+void
+function_reader::handle_any_trailing_information (rtx x)
+{
+ struct md_name name;
+
+ switch (GET_CODE (x))
+ {
+ case MEM:
+ {
+ int ch;
+ require_char_ws ('[');
+ read_name (&name);
+ set_mem_alias_set (x, atoi (name.string));
+ /* We have either a MEM_EXPR, or a space. */
+ if (peek_char () != ' ')
+ {
+ file_location loc = get_current_location ();
+ char *desc = read_until (" +", false);
+ add_fixup_expr (loc, consolidate_singletons (x), desc);
+ free (desc);
+ }
+ else
+ read_char ();
+
+ /* We may optionally have '+' for MEM_OFFSET_KNOWN_P. */
+ ch = read_skip_spaces ();
+ if (ch == '+')
+ {
+ read_name (&name);
+ set_mem_offset (x, atoi (name.string));
+ }
+ else
+ unread_char (ch);
+
+ /* Handle optional " S" for MEM_SIZE. */
+ ch = read_skip_spaces ();
+ if (ch == 'S')
+ {
+ read_name (&name);
+ set_mem_size (x, atoi (name.string));
+ }
+ else
+ unread_char (ch);
+
+ /* Handle optional " A" for MEM_ALIGN. */
+ ch = read_skip_spaces ();
+ if (ch == 'A' && peek_char () != 'S')
+ {
+ read_name (&name);
+ set_mem_align (x, atoi (name.string));
+ }
+ else
+ unread_char (ch);
+
+ /* Handle optional " AS" for MEM_ADDR_SPACE. */
+ ch = read_skip_spaces ();
+ if (ch == 'A' && peek_char () == 'S')
+ {
+ read_char ();
+ read_name (&name);
+ set_mem_addr_space (x, atoi (name.string));
+ }
+ else
+ unread_char (ch);
+
+ require_char (']');
+ }
+ break;
+
+ case CODE_LABEL:
+ /* Assume that LABEL_NUSES was not dumped. */
+ /* TODO: parse LABEL_KIND. */
+ /* For now, skip until closing ')'. */
+ do
+ {
+ char ch = read_char ();
+ if (ch == ')')
+ {
+ unread_char (ch);
+ break;
+ }
+ }
+ while (1);
+ break;
+
+ default:
+ break;
+ }
+}
+
+/* Parse a tree dump for a MEM_EXPR in DESC and turn it back into a tree.
+ We handle "<retval>" and param names within cfun, but for anything else
+ we "cheat" by building a global VAR_DECL of type "int" with that name
+ (returning the same global for a name if we see the same name more
+ than once). */
+
+tree
+function_reader::parse_mem_expr (const char *desc)
+{
+ tree fndecl = cfun->decl;
+
+ if (0 == strcmp (desc, "<retval>"))
+ return DECL_RESULT (fndecl);
+
+ tree param = find_param_by_name (fndecl, desc);
+ if (param)
+ return param;
+
+ /* Search within decls we already created.
+ FIXME: use a hash rather than linear search. */
+ int i;
+ tree t;
+ FOR_EACH_VEC_ELT (m_fake_scope, i, t)
+ if (strcmp (desc, IDENTIFIER_POINTER (DECL_NAME (t))) == 0)
+ return t;
+
+ /* Not found? Create it.
+ This allows mimicking of real data but avoids having to specify
+ e.g. names of locals, params etc.
+ Though this way we don't know if we have a PARM_DECL vs a VAR_DECL,
+ and we don't know the types. Fake it by making everything be
+ a VAR_DECL of "int" type. */
+ t = build_decl (UNKNOWN_LOCATION, VAR_DECL,
+ get_identifier (desc),
+ integer_type_node);
+ m_fake_scope.safe_push (t);
+ return t;
+}
+
+/* Record that at LOC we saw an insn uid INSN_UID for the operand with index
+ OPERAND_IDX within INSN, so that the pointer value can be fixed up in
+ later post-processing. */
+
+void
+function_reader::add_fixup_insn_uid (file_location loc, rtx insn, int operand_idx,
+ int insn_uid)
+{
+ m_fixups.safe_push (new fixup_insn_uid (loc, insn, operand_idx, insn_uid));
+}
+
+/* Record that at LOC we saw an basic block index BB_IDX for the operand with index
+ OPERAND_IDX within INSN, so that the pointer value can be fixed up in
+ later post-processing. */
+
+void
+function_reader::add_fixup_note_insn_basic_block (file_location loc, rtx insn,
+ int operand_idx, int bb_idx)
+{
+ m_fixups.safe_push (new fixup_note_insn_basic_block (loc, insn, operand_idx,
+ bb_idx));
+}
+
+/* Placeholder hook for recording source location information seen in a dump.
+ This is empty for now. */
+
+void
+function_reader::add_fixup_source_location (file_location, rtx_insn *,
+ const char *, int)
+{
+}
+
+/* Record that at LOC we saw textual description DESC of the MEM_EXPR or REG_EXPR
+ of INSN, so that the fields can be fixed up in later post-processing. */
+
+void
+function_reader::add_fixup_expr (file_location loc, rtx insn,
+ const char *desc)
+{
+ gcc_assert (desc);
+ /* Fail early if the RTL reader erroneously hands us an int. */
+ gcc_assert (!ISDIGIT (desc[0]));
+
+ m_fixups.safe_push (new fixup_expr (loc, insn, desc));
+}
+
+/* Helper function for consolidate_reg. Return the global rtx for
+ the register with regno REGNO. */
+
+static rtx
+lookup_global_register (int regno)
+{
+ /* We can't use a switch here, as some of the REGNUMs might not be constants
+ for some targets. */
+ if (regno == STACK_POINTER_REGNUM)
+ return stack_pointer_rtx;
+ else if (regno == FRAME_POINTER_REGNUM)
+ return frame_pointer_rtx;
+ else if (regno == HARD_FRAME_POINTER_REGNUM)
+ return hard_frame_pointer_rtx;
+ else if (regno == ARG_POINTER_REGNUM)
+ return arg_pointer_rtx;
+ else if (regno == VIRTUAL_INCOMING_ARGS_REGNUM)
+ return virtual_incoming_args_rtx;
+ else if (regno == VIRTUAL_STACK_VARS_REGNUM)
+ return virtual_stack_vars_rtx;
+ else if (regno == VIRTUAL_STACK_DYNAMIC_REGNUM)
+ return virtual_stack_dynamic_rtx;
+ else if (regno == VIRTUAL_OUTGOING_ARGS_REGNUM)
+ return virtual_outgoing_args_rtx;
+ else if (regno == VIRTUAL_CFA_REGNUM)
+ return virtual_cfa_rtx;
+ else if (regno == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
+ return virtual_preferred_stack_boundary_rtx;
+#ifdef return_ADDRESS_POINTER_REGNUM
+ else if (regno == RETURN_ADDRESS_POINTER_REGNUM)
+ return return_address_pointer_rtx;
+#endif
+
+ return NULL;
+}
+
+/* Ensure that the backend can cope with a REG with regno REGNO.
+ Normally REG instances are created by gen_reg_rtx which updates
+ regno_reg_rtx, growing it as necessary.
+ The REG instances created from the dumpfile weren't created this
+ way, so we need to manually update regno_reg_rtx. */
+
+static void
+ensure_regno (int regno)
+{
+ if (reg_rtx_no < regno + 1)
+ reg_rtx_no = regno + 1;
+
+ crtl->emit.ensure_regno_capacity ();
+ gcc_assert (regno < crtl->emit.regno_pointer_align_length);
+}
+
+/* Helper function for consolidate_singletons, for handling REG instances.
+ Given REG instance X of some regno, return the singleton rtx for that
+ regno, if it exists, or X. */
+
+static rtx
+consolidate_reg (rtx x)
+{
+ gcc_assert (GET_CODE (x) == REG);
+
+ unsigned int regno = REGNO (x);
+
+ ensure_regno (regno);
+
+ /* Some register numbers have their rtx created in init_emit_regs
+ e.g. stack_pointer_rtx for STACK_POINTER_REGNUM.
+ Consolidate on this. */
+ rtx global_reg = lookup_global_register (regno);
+ if (global_reg)
+ return global_reg;
+
+ /* Populate regno_reg_rtx if necessary. */
+ if (regno_reg_rtx[regno] == NULL)
+ regno_reg_rtx[regno] = x;
+ /* Use it. */
+ gcc_assert (GET_CODE (regno_reg_rtx[regno]) == REG);
+ gcc_assert (REGNO (regno_reg_rtx[regno]) == regno);
+ if (GET_MODE (x) == GET_MODE (regno_reg_rtx[regno]))
+ return regno_reg_rtx[regno];
+
+ return x;
+}
+
+/* When reading RTL function dumps, we must consolidate some
+ rtx so that we use singletons where singletons are expected
+ (e.g. we don't want multiple "(const_int 0 [0])" rtx, since
+ these are tested via pointer equality against const0_rtx.
+
+ Return the equivalent singleton rtx for X, if any, otherwise X. */
+
+rtx
+function_reader::consolidate_singletons (rtx x)
+{
+ if (!x)
+ return x;
+
+ switch (GET_CODE (x))
+ {
+ case PC: return pc_rtx;
+ case RETURN: return ret_rtx;
+ case SIMPLE_RETURN: return simple_return_rtx;
+ case CC0: return cc0_rtx;
+
+ case REG:
+ return consolidate_reg (x);
+
+ case CONST_INT:
+ return gen_rtx_CONST_INT (GET_MODE (x), INTVAL (x));
+
+ default:
+ break;
+ }
+
+ return x;
+}
+
+/* Parse an rtx directive, including both the opening/closing parentheses,
+ and the name. */
+
+rtx
+function_reader::parse_rtx ()
+{
+ require_char_ws ('(');
+ struct md_name directive;
+ read_name (&directive);
+ rtx result
+ = consolidate_singletons (read_rtx_code (directive.string));
+ require_char_ws (')');
+
+ return result;
+}
+
+/* Implementation of rtx_reader::postprocess for reading function dumps.
+ Return the equivalent singleton rtx for X, if any, otherwise X. */
+
+rtx
+function_reader::postprocess (rtx x)
+{
+ return consolidate_singletons (x);
+}
+
+/* Implementation of rtx_reader::finalize_string for reading function dumps.
+ Make a GC-managed copy of STRINGBUF. */
+
+const char *
+function_reader::finalize_string (char *stringbuf)
+{
+ return ggc_strdup (stringbuf);
+}
+
+/* Attempt to parse optional location information for insn INSN, as
+ potentially written out by rtx_writer::print_rtx_operand_code_i.
+ We look for a quoted string followed by a colon. */
+
+void
+function_reader::maybe_read_location (rtx_insn *insn)
+{
+ file_location loc = get_current_location ();
+
+ /* Attempt to parse a quoted string. */
+ int ch = read_skip_spaces ();
+ if (ch == '"')
+ {
+ char *filename = read_quoted_string ();
+ require_char (':');
+ struct md_name line_num;
+ read_name (&line_num);
+ add_fixup_source_location (loc, insn, filename, atoi (line_num.string));
+ }
+ else
+ unread_char (ch);
+}
+
+/* Postprocessing subroutine of function_reader::parse_function.
+ Populate m_insns_by_uid. */
+
+void
+function_reader::handle_insn_uids ()
+{
+ /* Locate the currently assigned INSN_UID values, storing
+ them in m_insns_by_uid. */
+ int max_uid = 0;
+ for (rtx_insn *insn = get_insns (); insn; insn = NEXT_INSN (insn))
+ {
+ if (m_insns_by_uid.get (INSN_UID (insn)))
+ error ("duplicate insn UID: %i", INSN_UID (insn));
+ m_insns_by_uid.put (INSN_UID (insn), insn);
+ if (INSN_UID (insn) > max_uid)
+ max_uid = INSN_UID (insn);
+ }
+
+ /* Ensure x_cur_insn_uid is 1 more than the biggest insn UID seen.
+ This is normally updated by the various make_*insn_raw functions. */
+ crtl->emit.x_cur_insn_uid = max_uid + 1;
+}
+
+/* Apply all of the recorded fixups. */
+
+void
+function_reader::apply_fixups ()
+{
+ int i;
+ fixup *f;
+ FOR_EACH_VEC_ELT (m_fixups, i, f)
+ f->apply (this);
+}
+
+/* Given a UID value, try to locate a pointer to the corresponding
+ rtx_insn *, or NULL if if can't be found. */
+
+rtx_insn **
+function_reader::get_insn_by_uid (int uid)
+{
+ return m_insns_by_uid.get (uid);
+}
+
+/* Run the RTL dump parser, parsing a dump located at PATH.
+ Return true iff the file was successfully parsed. */
+
+bool
+read_rtl_function_body (const char *path)
+{
+ initialize_rtl ();
+ init_emit ();
+ init_varasm_status ();
+
+ function_reader reader;
+ if (!reader.read_file (path))
+ return false;
+
+ return true;
+}
+
+#if CHECKING_P
+
+namespace selftest {
+
+/* Verify that parse_edge_flags works. */
+
+static void
+test_edge_flags ()
+{
+ /* parse_edge_flags modifies its input (due to strtok), so we must make
+ a copy of the literals. */
+#define ASSERT_PARSE_EDGE_FLAGS(EXPECTED, STR) \
+ do { \
+ char *str = xstrdup (STR); \
+ ASSERT_EQ (EXPECTED, parse_edge_flags (str)); \
+ free (str); \
+ } while (0)
+
+ ASSERT_PARSE_EDGE_FLAGS (0, "");
+ ASSERT_PARSE_EDGE_FLAGS (EDGE_FALLTHRU, "FALLTHRU");
+ ASSERT_PARSE_EDGE_FLAGS (EDGE_ABNORMAL_CALL, "ABNORMAL_CALL");
+ ASSERT_PARSE_EDGE_FLAGS (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL,
+ "ABNORMAL | ABNORMAL_CALL");
+
+#undef ASSERT_PARSE_EDGE_FLAGS
+}
+
+/* Verify that lookup_reg_by_dump_name works. */
+
+static void
+test_parsing_regnos ()
+{
+ ASSERT_EQ (-1, lookup_reg_by_dump_name ("this is not a register"));
+
+ /* Verify lookup of virtual registers. */
+ ASSERT_EQ (VIRTUAL_INCOMING_ARGS_REGNUM,
+ lookup_reg_by_dump_name ("virtual-incoming-args"));
+ ASSERT_EQ (VIRTUAL_STACK_VARS_REGNUM,
+ lookup_reg_by_dump_name ("virtual-stack-vars"));
+ ASSERT_EQ (VIRTUAL_STACK_DYNAMIC_REGNUM,
+ lookup_reg_by_dump_name ("virtual-stack-dynamic"));
+ ASSERT_EQ (VIRTUAL_OUTGOING_ARGS_REGNUM,
+ lookup_reg_by_dump_name ("virtual-outgoing-args"));
+ ASSERT_EQ (VIRTUAL_CFA_REGNUM,
+ lookup_reg_by_dump_name ("virtual-cfa"));
+ ASSERT_EQ (VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM,
+ lookup_reg_by_dump_name ("virtual-preferred-stack-boundary"));
+
+ /* Verify lookup of non-virtual pseudos. */
+ ASSERT_EQ (LAST_VIRTUAL_REGISTER + 1, lookup_reg_by_dump_name ("<0>"));
+ ASSERT_EQ (LAST_VIRTUAL_REGISTER + 2, lookup_reg_by_dump_name ("<1>"));
+}
+
+/* Verify that edge E is as expected, with the src and dest basic blocks
+ having indices EXPECTED_SRC_IDX and EXPECTED_DEST_IDX respectively, and
+ the edge having flags equal to EXPECTED_FLAGS.
+ Use LOC as the effective location when reporting failures. */
+
+static void
+assert_edge_at (const location &loc, edge e, int expected_src_idx,
+ int expected_dest_idx, int expected_flags)
+{
+ ASSERT_EQ_AT (loc, expected_src_idx, e->src->index);
+ ASSERT_EQ_AT (loc, expected_dest_idx, e->dest->index);
+ ASSERT_EQ_AT (loc, expected_flags, e->flags);
+}
+
+/* Verify that edge EDGE is as expected, with the src and dest basic blocks
+ having indices EXPECTED_SRC_IDX and EXPECTED_DEST_IDX respectively, and
+ the edge having flags equal to EXPECTED_FLAGS. */
+
+#define ASSERT_EDGE(EDGE, EXPECTED_SRC_IDX, EXPECTED_DEST_IDX, \
+ EXPECTED_FLAGS) \
+ assert_edge_at (SELFTEST_LOCATION, EDGE, EXPECTED_SRC_IDX, \
+ EXPECTED_DEST_IDX, EXPECTED_FLAGS)
+
+/* Verify that we can load RTL dumps. */
+
+static void
+test_loading_dump_fragment_1 ()
+{
+ // TODO: filter on target?
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("asr_div1.rtl"));
+
+ /* Verify that the insns were loaded correctly. */
+ rtx_insn *insn_1 = get_insns ();
+ ASSERT_TRUE (insn_1);
+ ASSERT_EQ (1, INSN_UID (insn_1));
+ ASSERT_EQ (INSN, GET_CODE (insn_1));
+ ASSERT_EQ (SET, GET_CODE (PATTERN (insn_1)));
+ ASSERT_EQ (NULL, PREV_INSN (insn_1));
+
+ rtx_insn *insn_2 = NEXT_INSN (insn_1);
+ ASSERT_TRUE (insn_2);
+ ASSERT_EQ (2, INSN_UID (insn_2));
+ ASSERT_EQ (INSN, GET_CODE (insn_2));
+ ASSERT_EQ (insn_1, PREV_INSN (insn_2));
+ ASSERT_EQ (NULL, NEXT_INSN (insn_2));
+
+ /* Verify that registers were loaded correctly. */
+ rtx insn_1_dest = SET_DEST (PATTERN (insn_1));
+ ASSERT_EQ (REG, GET_CODE (insn_1_dest));
+ ASSERT_EQ ((LAST_VIRTUAL_REGISTER + 1) + 2, REGNO (insn_1_dest));
+ rtx insn_1_src = SET_SRC (PATTERN (insn_1));
+ ASSERT_EQ (LSHIFTRT, GET_CODE (insn_1_src));
+ rtx reg = XEXP (insn_1_src, 0);
+ ASSERT_EQ (REG, GET_CODE (reg));
+ ASSERT_EQ (LAST_VIRTUAL_REGISTER + 1, REGNO (reg));
+
+ /* Verify that get_insn_by_uid works. */
+ ASSERT_EQ (insn_1, get_insn_by_uid (1));
+ ASSERT_EQ (insn_2, get_insn_by_uid (2));
+
+ /* Verify that basic blocks were created. */
+ ASSERT_EQ (2, BLOCK_FOR_INSN (insn_1)->index);
+ ASSERT_EQ (2, BLOCK_FOR_INSN (insn_2)->index);
+
+ /* Verify that the CFG was recreated. */
+ ASSERT_TRUE (cfun);
+ verify_three_block_rtl_cfg (cfun);
+ basic_block bb2 = BASIC_BLOCK_FOR_FN (cfun, 2);
+ ASSERT_TRUE (bb2 != NULL);
+ ASSERT_EQ (BB_RTL, bb2->flags & BB_RTL);
+ ASSERT_EQ (2, bb2->index);
+ ASSERT_EQ (insn_1, BB_HEAD (bb2));
+ ASSERT_EQ (insn_2, BB_END (bb2));
+}
+
+/* Verify loading another RTL dump. */
+
+static void
+test_loading_dump_fragment_2 ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("simple-cse.rtl"));
+
+ rtx_insn *insn_1 = get_insn_by_uid (1);
+ rtx_insn *insn_2 = get_insn_by_uid (2);
+ rtx_insn *insn_3 = get_insn_by_uid (3);
+
+ rtx set1 = single_set (insn_1);
+ ASSERT_NE (NULL, set1);
+ rtx set2 = single_set (insn_2);
+ ASSERT_NE (NULL, set2);
+ rtx set3 = single_set (insn_3);
+ ASSERT_NE (NULL, set3);
+
+ rtx src1 = SET_SRC (set1);
+ ASSERT_EQ (PLUS, GET_CODE (src1));
+
+ rtx src2 = SET_SRC (set2);
+ ASSERT_EQ (PLUS, GET_CODE (src2));
+
+ /* Both src1 and src2 refer to "(reg:SI %0)".
+ Verify that we have pointer equality. */
+ rtx lhs1 = XEXP (src1, 0);
+ rtx lhs2 = XEXP (src2, 0);
+ ASSERT_EQ (lhs1, lhs2);
+
+ /* Verify that the CFG was recreated. */
+ ASSERT_TRUE (cfun);
+ verify_three_block_rtl_cfg (cfun);
+}
+
+/* Verify that CODE_LABEL insns are loaded correctly. */
+
+static void
+test_loading_labels ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("example-labels.rtl"));
+
+ rtx_insn *insn_100 = get_insn_by_uid (100);
+ ASSERT_EQ (CODE_LABEL, GET_CODE (insn_100));
+ ASSERT_EQ (100, INSN_UID (insn_100));
+ ASSERT_EQ (NULL, LABEL_NAME (insn_100));
+ ASSERT_EQ (0, LABEL_NUSES (insn_100));
+ ASSERT_EQ (30, CODE_LABEL_NUMBER (insn_100));
+
+ rtx_insn *insn_200 = get_insn_by_uid (200);
+ ASSERT_EQ (CODE_LABEL, GET_CODE (insn_200));
+ ASSERT_EQ (200, INSN_UID (insn_200));
+ ASSERT_STREQ ("some_label_name", LABEL_NAME (insn_200));
+ ASSERT_EQ (0, LABEL_NUSES (insn_200));
+ ASSERT_EQ (40, CODE_LABEL_NUMBER (insn_200));
+
+ /* Ensure that the presence of CODE_LABEL_NUMBER == 40
+ means that the next label num to be handed out will be 41. */
+ ASSERT_EQ (41, max_label_num ());
+
+ /* Ensure that label names read from a dump are GC-managed
+ and are found through the insn. */
+ forcibly_ggc_collect ();
+ ASSERT_TRUE (ggc_marked_p (insn_200));
+ ASSERT_TRUE (ggc_marked_p (LABEL_NAME (insn_200)));
+}
+
+/* Verify that the loader copes with an insn with a mode. */
+
+static void
+test_loading_insn_with_mode ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("insn-with-mode.rtl"));
+ rtx_insn *insn = get_insns ();
+ ASSERT_EQ (INSN, GET_CODE (insn));
+
+ /* Verify that the "TI" mode was set from "insn:TI". */
+ ASSERT_EQ (TImode, GET_MODE (insn));
+}
+
+/* Verify that the loader copes with a jump_insn to a label_ref. */
+
+static void
+test_loading_jump_to_label_ref ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("jump-to-label-ref.rtl"));
+
+ rtx_insn *jump_insn = get_insn_by_uid (1);
+ ASSERT_EQ (JUMP_INSN, GET_CODE (jump_insn));
+
+ rtx_insn *barrier = get_insn_by_uid (2);
+ ASSERT_EQ (BARRIER, GET_CODE (barrier));
+
+ rtx_insn *code_label = get_insn_by_uid (100);
+ ASSERT_EQ (CODE_LABEL, GET_CODE (code_label));
+
+ /* Verify the jump_insn. */
+ ASSERT_EQ (4, BLOCK_FOR_INSN (jump_insn)->index);
+ ASSERT_EQ (SET, GET_CODE (PATTERN (jump_insn)));
+ /* Ensure that the "(pc)" is using the global singleton. */
+ ASSERT_RTX_PTR_EQ (pc_rtx, SET_DEST (PATTERN (jump_insn)));
+ rtx label_ref = SET_SRC (PATTERN (jump_insn));
+ ASSERT_EQ (LABEL_REF, GET_CODE (label_ref));
+ ASSERT_EQ (code_label, label_ref_label (label_ref));
+ ASSERT_EQ (code_label, JUMP_LABEL (jump_insn));
+
+ /* Verify the code_label. */
+ ASSERT_EQ (5, BLOCK_FOR_INSN (code_label)->index);
+ ASSERT_EQ (NULL, LABEL_NAME (code_label));
+ ASSERT_EQ (1, LABEL_NUSES (code_label));
+
+ /* Verify the generated CFG. */
+
+ /* Locate blocks. */
+ basic_block entry = ENTRY_BLOCK_PTR_FOR_FN (cfun);
+ ASSERT_TRUE (entry != NULL);
+ ASSERT_EQ (ENTRY_BLOCK, entry->index);
+
+ basic_block exit = EXIT_BLOCK_PTR_FOR_FN (cfun);
+ ASSERT_TRUE (exit != NULL);
+ ASSERT_EQ (EXIT_BLOCK, exit->index);
+
+ basic_block bb4 = (*cfun->cfg->x_basic_block_info)[4];
+ basic_block bb5 = (*cfun->cfg->x_basic_block_info)[5];
+ ASSERT_EQ (4, bb4->index);
+ ASSERT_EQ (5, bb5->index);
+
+ /* Entry block. */
+ ASSERT_EQ (NULL, entry->preds);
+ ASSERT_EQ (1, entry->succs->length ());
+ ASSERT_EDGE ((*entry->succs)[0], 0, 4, EDGE_FALLTHRU);
+
+ /* bb4. */
+ ASSERT_EQ (1, bb4->preds->length ());
+ ASSERT_EDGE ((*bb4->preds)[0], 0, 4, EDGE_FALLTHRU);
+ ASSERT_EQ (1, bb4->succs->length ());
+ ASSERT_EDGE ((*bb4->succs)[0], 4, 5, 0x0);
+
+ /* bb5. */
+ ASSERT_EQ (1, bb5->preds->length ());
+ ASSERT_EDGE ((*bb5->preds)[0], 4, 5, 0x0);
+ ASSERT_EQ (1, bb5->succs->length ());
+ ASSERT_EDGE ((*bb5->succs)[0], 5, 1, EDGE_FALLTHRU);
+
+ /* Exit block. */
+ ASSERT_EQ (1, exit->preds->length ());
+ ASSERT_EDGE ((*exit->preds)[0], 5, 1, EDGE_FALLTHRU);
+ ASSERT_EQ (NULL, exit->succs);
+}
+
+/* Verify that the loader copes with a jump_insn to a label_ref
+ marked "return". */
+
+static void
+test_loading_jump_to_return ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("jump-to-return.rtl"));
+
+ rtx_insn *jump_insn = get_insn_by_uid (1);
+ ASSERT_EQ (JUMP_INSN, GET_CODE (jump_insn));
+ ASSERT_RTX_PTR_EQ (ret_rtx, JUMP_LABEL (jump_insn));
+}
+
+/* Verify that the loader copes with a jump_insn to a label_ref
+ marked "simple_return". */
+
+static void
+test_loading_jump_to_simple_return ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION,
+ locate_file ("jump-to-simple-return.rtl"));
+
+ rtx_insn *jump_insn = get_insn_by_uid (1);
+ ASSERT_EQ (JUMP_INSN, GET_CODE (jump_insn));
+ ASSERT_RTX_PTR_EQ (simple_return_rtx, JUMP_LABEL (jump_insn));
+}
+
+/* Verify that the loader copes with a NOTE_INSN_BASIC_BLOCK. */
+
+static void
+test_loading_note_insn_basic_block ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION,
+ locate_file ("note_insn_basic_block.rtl"));
+
+ rtx_insn *note = get_insn_by_uid (1);
+ ASSERT_EQ (NOTE, GET_CODE (note));
+ ASSERT_EQ (2, BLOCK_FOR_INSN (note)->index);
+
+ ASSERT_EQ (NOTE_INSN_BASIC_BLOCK, NOTE_KIND (note));
+ ASSERT_EQ (2, NOTE_BASIC_BLOCK (note)->index);
+ ASSERT_EQ (BASIC_BLOCK_FOR_FN (cfun, 2), NOTE_BASIC_BLOCK (note));
+}
+
+/* Verify that the loader copes with a NOTE_INSN_DELETED. */
+
+static void
+test_loading_note_insn_deleted ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("note-insn-deleted.rtl"));
+
+ rtx_insn *note = get_insn_by_uid (1);
+ ASSERT_EQ (NOTE, GET_CODE (note));
+ ASSERT_EQ (NOTE_INSN_DELETED, NOTE_KIND (note));
+}
+
+/* Verify that the const_int values are consolidated, since
+ pointer equality corresponds to value equality.
+ TODO: do this for all in CASE_CONST_UNIQUE. */
+
+static void
+test_loading_const_int ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("const-int.rtl"));
+
+ /* Verify that const_int values below MAX_SAVED_CONST_INT use
+ the global values. */
+ ASSERT_EQ (const0_rtx, SET_SRC (PATTERN (get_insn_by_uid (1))));
+ ASSERT_EQ (const1_rtx, SET_SRC (PATTERN (get_insn_by_uid (2))));
+ ASSERT_EQ (constm1_rtx, SET_SRC (PATTERN (get_insn_by_uid (3))));
+
+ /* Verify that other const_int values are consolidated. */
+ rtx int256 = gen_rtx_CONST_INT (SImode, 256);
+ ASSERT_EQ (int256, SET_SRC (PATTERN (get_insn_by_uid (4))));
+}
+
+/* Verify that the loader copes with a SYMBOL_REF. */
+
+static void
+test_loading_symbol_ref ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("symbol-ref.rtl"));
+
+ rtx_insn *insn = get_insns ();
+
+ rtx high = SET_SRC (PATTERN (insn));
+ ASSERT_EQ (HIGH, GET_CODE (high));
+
+ rtx symbol_ref = XEXP (high, 0);
+ ASSERT_EQ (SYMBOL_REF, GET_CODE (symbol_ref));
+
+ /* Verify that "[flags 0xc0]" was parsed. */
+ ASSERT_EQ (0xc0, SYMBOL_REF_FLAGS (symbol_ref));
+ /* TODO: we don't yet load SYMBOL_REF_DECL. */
+}
+
+/* Verify that the loader can rebuild a CFG. */
+
+static void
+test_loading_cfg ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("cfg-test.rtl"));
+
+ ASSERT_STREQ ("cfg_test", IDENTIFIER_POINTER (DECL_NAME (cfun->decl)));
+
+ ASSERT_TRUE (cfun);
+
+ ASSERT_TRUE (cfun->cfg != NULL);
+ ASSERT_EQ (6, n_basic_blocks_for_fn (cfun));
+ ASSERT_EQ (6, n_edges_for_fn (cfun));
+
+ /* The "fake" basic blocks. */
+ basic_block entry = ENTRY_BLOCK_PTR_FOR_FN (cfun);
+ ASSERT_TRUE (entry != NULL);
+ ASSERT_EQ (ENTRY_BLOCK, entry->index);
+
+ basic_block exit = EXIT_BLOCK_PTR_FOR_FN (cfun);
+ ASSERT_TRUE (exit != NULL);
+ ASSERT_EQ (EXIT_BLOCK, exit->index);
+
+ /* The "real" basic blocks. */
+ basic_block bb2 = (*cfun->cfg->x_basic_block_info)[2];
+ basic_block bb3 = (*cfun->cfg->x_basic_block_info)[3];
+ basic_block bb4 = (*cfun->cfg->x_basic_block_info)[4];
+ basic_block bb5 = (*cfun->cfg->x_basic_block_info)[5];
+
+ ASSERT_EQ (2, bb2->index);
+ ASSERT_EQ (3, bb3->index);
+ ASSERT_EQ (4, bb4->index);
+ ASSERT_EQ (5, bb5->index);
+
+ /* Verify connectivity. */
+
+ /* Entry block. */
+ ASSERT_EQ (NULL, entry->preds);
+ ASSERT_EQ (1, entry->succs->length ());
+ ASSERT_EDGE ((*entry->succs)[0], 0, 2, EDGE_FALLTHRU);
+
+ /* bb2. */
+ ASSERT_EQ (1, bb2->preds->length ());
+ ASSERT_EDGE ((*bb2->preds)[0], 0, 2, EDGE_FALLTHRU);
+ ASSERT_EQ (2, bb2->succs->length ());
+ ASSERT_EDGE ((*bb2->succs)[0], 2, 3, EDGE_TRUE_VALUE);
+ ASSERT_EDGE ((*bb2->succs)[1], 2, 4, EDGE_FALSE_VALUE);
+
+ /* bb3. */
+ ASSERT_EQ (1, bb3->preds->length ());
+ ASSERT_EDGE ((*bb3->preds)[0], 2, 3, EDGE_TRUE_VALUE);
+ ASSERT_EQ (1, bb3->succs->length ());
+ ASSERT_EDGE ((*bb3->succs)[0], 3, 5, EDGE_FALLTHRU);
+
+ /* bb4. */
+ ASSERT_EQ (1, bb4->preds->length ());
+ ASSERT_EDGE ((*bb4->preds)[0], 2, 4, EDGE_FALSE_VALUE);
+ ASSERT_EQ (1, bb4->succs->length ());
+ ASSERT_EDGE ((*bb4->succs)[0], 4, 5, EDGE_FALLTHRU);
+
+ /* bb5. */
+ ASSERT_EQ (2, bb5->preds->length ());
+ ASSERT_EDGE ((*bb5->preds)[0], 3, 5, EDGE_FALLTHRU);
+ ASSERT_EDGE ((*bb5->preds)[1], 4, 5, EDGE_FALLTHRU);
+ ASSERT_EQ (1, bb5->succs->length ());
+ ASSERT_EDGE ((*bb5->succs)[0], 5, 1, EDGE_FALLTHRU);
+
+ /* Exit block. */
+ ASSERT_EQ (1, exit->preds->length ());
+ ASSERT_EDGE ((*exit->preds)[0], 5, 1, EDGE_FALLTHRU);
+ ASSERT_EQ (NULL, exit->succs);
+}
+
+/* Verify that the loader copes with sparse block indices.
+ This testcase loads a file with a "(block 42)". */
+
+static void
+test_loading_bb_index ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("bb-index.rtl"));
+
+ ASSERT_STREQ ("test_bb_index", IDENTIFIER_POINTER (DECL_NAME (cfun->decl)));
+
+ ASSERT_TRUE (cfun);
+
+ ASSERT_TRUE (cfun->cfg != NULL);
+ ASSERT_EQ (3, n_basic_blocks_for_fn (cfun));
+ ASSERT_EQ (43, basic_block_info_for_fn (cfun)->length ());
+ ASSERT_EQ (2, n_edges_for_fn (cfun));
+
+ ASSERT_EQ (NULL, (*cfun->cfg->x_basic_block_info)[41]);
+ basic_block bb42 = (*cfun->cfg->x_basic_block_info)[42];
+ ASSERT_NE (NULL, bb42);
+ ASSERT_EQ (42, bb42->index);
+}
+
+/* Verify that function_reader::handle_any_trailing_information correctly
+ parses all the possible items emitted for a MEM. */
+
+static void
+test_loading_mem ()
+{
+ rtl_dump_test t (SELFTEST_LOCATION, locate_file ("mem.rtl"));
+
+ ASSERT_STREQ ("test_mem", IDENTIFIER_POINTER (DECL_NAME (cfun->decl)));
+ ASSERT_TRUE (cfun);
+
+ /* Verify parsing of "[42 i+17 S8 A128 AS5]". */
+ rtx_insn *insn_1 = get_insn_by_uid (1);
+ rtx set1 = single_set (insn_1);
+ rtx mem1 = SET_DEST (set1);
+ ASSERT_EQ (42, MEM_ALIAS_SET (mem1));
+ /* "+17". */
+ ASSERT_TRUE (MEM_OFFSET_KNOWN_P (mem1));
+ ASSERT_EQ (17, MEM_OFFSET (mem1));
+ /* "S8". */
+ ASSERT_EQ (8, MEM_SIZE (mem1));
+ /* "A128. */
+ ASSERT_EQ (128, MEM_ALIGN (mem1));
+ /* "AS5. */
+ ASSERT_EQ (5, MEM_ADDR_SPACE (mem1));
+
+ /* Verify parsing of "43 i+18 S9 AS6"
+ (an address space without an alignment). */
+ rtx_insn *insn_2 = get_insn_by_uid (2);
+ rtx set2 = single_set (insn_2);
+ rtx mem2 = SET_DEST (set2);
+ ASSERT_EQ (43, MEM_ALIAS_SET (mem2));
+ /* "+18". */
+ ASSERT_TRUE (MEM_OFFSET_KNOWN_P (mem2));
+ ASSERT_EQ (18, MEM_OFFSET (mem2));
+ /* "S9". */
+ ASSERT_EQ (9, MEM_SIZE (mem2));
+ /* "AS6. */
+ ASSERT_EQ (6, MEM_ADDR_SPACE (mem2));
+}
+
+/* Run all of the selftests within this file. */
+
+void
+read_rtl_function_c_tests ()
+{
+ test_edge_flags ();
+ test_parsing_regnos ();
+ test_loading_dump_fragment_1 ();
+ test_loading_dump_fragment_2 ();
+ test_loading_labels ();
+ test_loading_insn_with_mode ();
+ test_loading_jump_to_label_ref ();
+ test_loading_jump_to_return ();
+ test_loading_jump_to_simple_return ();
+ test_loading_note_insn_basic_block ();
+ test_loading_note_insn_deleted ();
+ test_loading_const_int ();
+ test_loading_symbol_ref ();
+ test_loading_cfg ();
+ test_loading_bb_index ();
+ test_loading_mem ();
+}
+
+} // namespace selftest
+
+#endif /* #if CHECKING_P */
projects / gcc.git / commitdiff