gen-pass-instances.awk: Rewritten.

	* gen-pass-instances.awk: Rewritten.
	* Makefile.in (pass-instances.def): Depend on $(PASSES_EXTRA), pass
	$(PASSES_EXTRA) after passes.def to the script.
	* config/i386/t-i386 (PASSES_EXTRA): Add i386-passes.def.
	* config/i386/i386-passes.def: New file.
	* config/i386/i386-protos.h (make_pass_insert_vzeroupper,
	make_pass_stv): Declare.
	* config/i386/i386.c (pass_stv::pass_stv): Initialize timode_p to
	false.
	(pass_stv::gate): Depending on timode_p member require TARGET_64BIT
	or !TARGET_64BIT.
	(pass_stv::clone, pass_stv::set_pass_param): New methods.
	(pass_stv::timode_p): New non-static data member.
	(ix86_option_override): Don't register passes here.

From-SVN: r240887

6 files changed, 219 insertions, 81 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fa748f3..1685c7f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,20 @@
 2016-10-08  Jakub Jelinek  <jakub@redhat.com>
 
+	* gen-pass-instances.awk: Rewritten.
+	* Makefile.in (pass-instances.def): Depend on $(PASSES_EXTRA), pass
+	$(PASSES_EXTRA) after passes.def to the script.
+	* config/i386/t-i386 (PASSES_EXTRA): Add i386-passes.def.
+	* config/i386/i386-passes.def: New file.
+	* config/i386/i386-protos.h (make_pass_insert_vzeroupper,
+	make_pass_stv): Declare.
+	* config/i386/i386.c (pass_stv::pass_stv): Initialize timode_p to
+	false.
+	(pass_stv::gate): Depending on timode_p member require TARGET_64BIT
+	or !TARGET_64BIT.
+	(pass_stv::clone, pass_stv::set_pass_param): New methods.
+	(pass_stv::timode_p): New non-static data member.
+	(ix86_option_override): Don't register passes here.
+
 	* doc/invoke.texi: Document accepting Else, fallthrough.
 
 	* doc/invoke.texi (-Wimplicit-fallthrough): Document FALLTHRU comment
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 15c48bc..705b574 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -2158,9 +2158,10 @@ s-bversion: BASE-VER
 
 CFLAGS-toplev.o += -DTARGET_NAME=\"$(target_noncanonical)\"
 
-pass-instances.def: $(srcdir)/passes.def $(srcdir)/gen-pass-instances.awk
+pass-instances.def: $(srcdir)/passes.def $(PASSES_EXTRA) \
+		    $(srcdir)/gen-pass-instances.awk
 	$(AWK) -f $(srcdir)/gen-pass-instances.awk \
-	  $(srcdir)/passes.def > pass-instances.def
+	  $(srcdir)/passes.def $(PASSES_EXTRA) > pass-instances.def
 
 $(out_object_file): $(out_file)
 	$(COMPILE) $<
diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index 8130161..8eeb072 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -338,3 +338,9 @@ struct ix86_first_cycle_multipass_data_
 
 const addr_space_t ADDR_SPACE_SEG_FS = 1;
 const addr_space_t ADDR_SPACE_SEG_GS = 2;
+
+namespace gcc { class context; }
+class rtl_opt_pass;
+
+extern rtl_opt_pass *make_pass_insert_vzeroupper (gcc::context *);
+extern rtl_opt_pass *make_pass_stv (gcc::context *);
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 027e84d..f694611 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -4105,13 +4105,15 @@ class pass_stv : public rtl_opt_pass
 {
 public:
   pass_stv (gcc::context *ctxt)
-    : rtl_opt_pass (pass_data_stv, ctxt)
+    : rtl_opt_pass (pass_data_stv, ctxt),
+      timode_p (false)
   {}
 
   /* opt_pass methods: */
   virtual bool gate (function *)
     {
-      return TARGET_STV && TARGET_SSE2 && optimize > 1;
+      return (timode_p == !!TARGET_64BIT
+	      && TARGET_STV && TARGET_SSE2 && optimize > 1);
     }
 
   virtual unsigned int execute (function *)
@@ -4119,6 +4121,19 @@ public:
       return convert_scalars_to_vector ();
     }
 
+  opt_pass *clone ()
+    {
+      return new pass_stv (m_ctxt);
+    }
+
+  void set_pass_param (unsigned int n, bool param)
+    {
+      gcc_assert (n == 0);
+      timode_p = param;
+    }
+
+private:
+  bool timode_p;
 }; // class pass_stv
 
 } // anon namespace
@@ -6150,29 +6165,7 @@ ix86_option_override_internal (bool main_args_p,
 static void
 ix86_option_override (void)
 {
-  opt_pass *pass_insert_vzeroupper = make_pass_insert_vzeroupper (g);
-  struct register_pass_info insert_vzeroupper_info
-    = { pass_insert_vzeroupper, "reload",
-	1, PASS_POS_INSERT_AFTER
-      };
-  opt_pass *pass_stv = make_pass_stv (g);
-  struct register_pass_info stv_info_dimode
-    = { pass_stv, "combine",
-	1, PASS_POS_INSERT_AFTER
-      };
-  /* Run the 64-bit STV pass before the CSE pass so that CONST0_RTX and
-     CONSTM1_RTX generated by the STV pass can be CSEed.  */
-  struct register_pass_info stv_info_timode
-    = { pass_stv, "cse2",
-	1, PASS_POS_INSERT_BEFORE
-      };
-
   ix86_option_override_internal (true, &global_options, &global_options_set);
-
-
-  /* This needs to be done at start up.  It's convenient to do it here.  */
-  register_pass (&insert_vzeroupper_info);
-  register_pass (TARGET_64BIT ? &stv_info_timode : &stv_info_dimode);
 }
 
 /* Implement the TARGET_OFFLOAD_OPTIONS hook.  */
diff --git a/gcc/config/i386/t-i386 b/gcc/config/i386/t-i386
index 9e27a0f..c435c1f 100644
--- a/gcc/config/i386/t-i386
+++ b/gcc/config/i386/t-i386
@@ -18,6 +18,7 @@
 
 OPTIONS_H_EXTRA += $(srcdir)/config/i386/stringop.def
 TM_H += $(srcdir)/config/i386/x86-tune.def
+PASSES_EXTRA += $(srcdir)/config/i386/i386-passes.def
 
 i386-c.o: $(srcdir)/config/i386/i386-c.c
 	  $(COMPILE) $<
diff --git a/gcc/gen-pass-instances.awk b/gcc/gen-pass-instances.awk
index bc82ee9..6f7794e 100644
--- a/gcc/gen-pass-instances.awk
+++ b/gcc/gen-pass-instances.awk
@@ -17,6 +17,8 @@
 # This Awk script takes passes.def and writes pass-instances.def,
 # counting the instances of each kind of pass, adding an instance number
 # to everywhere that NEXT_PASS is used.
+# Also handle INSERT_PASS_AFTER, INSERT_PASS_BEFORE and REPLACE_PASS
+# directives.
 #
 # For example, the single-instanced pass:
 #     NEXT_PASS (pass_warn_unused_result);
@@ -30,81 +32,201 @@
 # through:
 #   NEXT_PASS (pass_copy_prop, 8);
 # (currently there are 8 instances of that pass)
+#
+#     INSERT_PASS_AFTER (pass_copy_prop, 1, pass_stv);
+# will insert
+#     NEXT_PASS (pass_stv, 1);
+# immediately after the NEXT_PASS (pass_copy_prop, 1) line,
+# similarly INSERT_PASS_BEFORE inserts immediately before that line.
+#     REPLACE_PASS (pass_copy_prop, 1, pass_stv, true);
+# will replace NEXT_PASS (pass_copy_prop, 1) line with
+#     NEXT_PASS (pass_stv, 1, true);
+# line and renumber all higher pass_copy_prop instances if any.
 
 # Usage: awk -f gen-pass-instances.awk passes.def
 
 BEGIN {
-	print "/* This file is auto-generated by gen-pass-instances.awk";
-	print "   from passes.def.  */";
+  print "/* This file is auto-generated by gen-pass-instances.awk";
+  print "   from passes.def.  */";
+  lineno = 1;
 }
 
-function handle_line()
+function parse_line(line, fnname,	len_of_call, len_of_start,
+					len_of_open, len_of_close,
+					len_of_args, args_start_at,
+					args_str, len_of_prefix,
+					call_starts_at,
+					postfix_starts_at)
 {
-	line = $0;
-
-	# Find call expression.
-	call_starts_at = match(line, /NEXT_PASS \(.+\)/);
-	if (call_starts_at == 0)
-	{
-		print line;
-		return;
-	}
+  # Find call expression.
+  call_starts_at = match(line, fnname " \\(.+\\)");
+  if (call_starts_at == 0)
+    return 0;
+
+  # Length of the call expression.
+  len_of_call = RLENGTH;
+
+  len_of_start = length(fnname " (");
+  len_of_open = length("(");
+  len_of_close = length(")");
+
+  # Find arguments
+  len_of_args = len_of_call - (len_of_start + len_of_close);
+  args_start_at = call_starts_at + len_of_start;
+  args_str = substr(line, args_start_at, len_of_args);
+  split(args_str, args, ",");
+
+  # Find call expression prefix
+  len_of_prefix = call_starts_at - 1;
+  prefix = substr(line, 1, len_of_prefix);
+
+  # Find call expression postfix
+  postfix_starts_at = call_starts_at + len_of_call;
+  postfix = substr(line, postfix_starts_at);
+  return 1;
+}
 
-	# Length of the call expression.
-	len_of_call = RLENGTH;
+function adjust_linenos(above, increment,	p, i)
+{
+  for (p in pass_lines)
+    if (pass_lines[p] >= above)
+      pass_lines[p] += pass_lines[p];
+  if (increment > 0)
+    for (i = lineno - 1; i >= above; i--)
+      lines[i + increment] = lines[i];
+  else
+    for (i = above; i < lineno; i++)
+      lines[i + increment] = lines[i];
+  lineno += increment;
+}
 
-	len_of_start = length("NEXT_PASS (");
-	len_of_open = length("(");
-	len_of_close = length(")");
+function insert_remove_pass(line, fnname)
+{
+  parse_line($0, fnname);
+  pass_name = args[1];
+  if (pass_name == "PASS")
+    return 1;
+  pass_num = args[2] + 0;
+  new_line = prefix "NEXT_PASS (" args[3];
+  if (args[4])
+    new_line = new_line ", " args[4];
+  new_line = new_line ")" postfix;
+  if (!pass_lines[pass_name, pass_num])
+    {
+      print "ERROR: Can't locate instance of the pass mentioned in " fnname;
+      return 1;
+    }
+  return 0;
+}
 
-	# Find arguments
-	len_of_args = len_of_call - (len_of_start + len_of_close);
-	args_start_at = call_starts_at + len_of_start;
-	args_str = substr(line, args_start_at, len_of_args);
-	split(args_str, args, ",");
+function insert_pass(line, fnname, after,		num)
+{
+  if (insert_remove_pass(line, fnname))
+    return;
+  num = pass_lines[pass_name, pass_num];
+  adjust_linenos(num + after, 1);
+  pass_name = args[3];
+  # Set pass_counts
+  if (args[3] in pass_counts)
+    pass_counts[pass_name]++;
+  else
+    pass_counts[pass_name] = 1;
+
+  pass_lines[pass_name, pass_counts[pass_name]] = num + after;
+  lines[num + after] = new_line;
+}
 
-	# Set pass_name argument, an optional with_arg argument
-	pass_name = args[1];
-	with_arg = args[2];
+function replace_pass(line, fnname,			num, i)
+{
+  if (insert_remove_pass(line, "REPLACE_PASS"))
+    return;
+  num = pass_lines[pass_name, pass_num];
+  for (i = pass_counts[pass_name]; i > pass_num; i--)
+    pass_lines[pass_name, i - 1] = pass_lines[pass_name, i];
+  delete pass_lines[pass_name, pass_counts[pass_name]];
+  if (pass_counts[pass_name] == 1)
+    delete pass_counts[pass_name];
+  else
+    pass_counts[pass_name]--;
+
+  pass_name = args[3];
+  # Set pass_counts
+  if (args[3] in pass_counts)
+    pass_counts[pass_name]++;
+  else
+    pass_counts[pass_name] = 1;
+
+  pass_lines[pass_name, pass_counts[pass_name]] = num;
+  lines[num] = new_line;
+}
 
-	# Find call expression prefix
-	len_of_prefix = call_starts_at - 1;
-	prefix = substr(line, 1, len_of_prefix);
+/INSERT_PASS_AFTER \(.+\)/ {
+  insert_pass($0, "INSERT_PASS_AFTER", 1);
+  next;
+}
 
-	# Find call expression postfix
-	postfix_starts_at = call_starts_at + len_of_call;
-	postfix = substr(line, postfix_starts_at);
+/INSERT_PASS_BEFORE \(.+\)/ {
+  insert_pass($0, "INSERT_PASS_BEFORE", 0);
+  next;
+}
 
-	# Set pass_counts
-	if (pass_name in pass_counts)
-		pass_counts[pass_name]++;
-	else
-		pass_counts[pass_name] = 1;
+/REPLACE_PASS \(.+\)/ {
+  replace_pass($0, "REPLACE_PASS");
+  next;
+}
 
-	pass_num = pass_counts[pass_name];
+{
+  ret = parse_line($0, "NEXT_PASS");
+  if (ret)
+    {
+      pass_name = args[1];
+
+      # Set pass_counts
+      if (pass_name in pass_counts)
+	pass_counts[pass_name]++;
+      else
+	pass_counts[pass_name] = 1;
+
+      pass_lines[pass_name, pass_counts[pass_name]] = lineno;
+    }
+  lines[lineno++] = $0;
+}
 
-	# Print call expression with extra pass_num argument
-	printf "%s", prefix;
-	if (with_arg)
+END {
+  delete pass_counts;
+  for (i = 1; i < lineno; i++)
+    {
+      ret = parse_line(lines[i], "NEXT_PASS");
+      if (ret)
 	{
-		printf "NEXT_PASS_WITH_ARG";
+	  # Set pass_name argument, an optional with_arg argument
+	  pass_name = args[1];
+	  with_arg = args[2];
+
+	  # Set pass_counts
+	  if (pass_name in pass_counts)
+	    pass_counts[pass_name]++;
+	  else
+	    pass_counts[pass_name] = 1;
+
+	  pass_num = pass_counts[pass_name];
+
+	  # Print call expression with extra pass_num argument
+	  printf "%s", prefix;
+	  if (with_arg)
+	    printf "NEXT_PASS_WITH_ARG";
+	  else
+	    printf "NEXT_PASS";
+	  printf " (%s, %s", pass_name, pass_num;
+	  if (with_arg)
+	    printf ", %s", with_arg;
+	  printf ")%s\n", postfix;
 	}
-	else
-	{
-		printf "NEXT_PASS";
-	}
-	printf " (";
-	printf "%s", pass_name;
-	printf ", %s", pass_num;
-	if (with_arg)
-	{
-		printf ", %s", with_arg;
-	}
-	printf ")%s\n", postfix;
+      else
+	print lines[i];
+    }
 }
 
-{ handle_line() }
-
 # Local Variables:
 # mode:awk
 # c-basic-offset:8