From f81a5b294711e3a420fe66702f0d9221332271c4 Mon Sep 17 00:00:00 2001
From: h00564365 <huangxiaoquan1@huawei.com>
Date: Wed, 13 Nov 2024 17:18:01 +0800
Subject: [PATCH 2/2] Add multi-version lto symbol parse, cross lto units
 ipa-inline extension, and lto compression algorithm specified.

---
 gcc/common.opt                               |  20 +++
 gcc/config/aarch64/aarch64.cc                |  41 ++++++
 gcc/doc/tm.texi                              |   6 +
 gcc/doc/tm.texi.in                           |   2 +
 gcc/ipa-inline.cc                            | 141 ++++++++++++++++++-
 gcc/lto-compress.cc                          |   6 +-
 gcc/lto-section-in.cc                        |   5 +
 gcc/lto-streamer-out.cc                      |   7 +-
 gcc/lto-wrapper.cc                           |   4 +
 gcc/optc-save-gen.awk                        |  57 ++++++++
 gcc/opth-gen.awk                             |   3 +
 gcc/opts.cc                                  |  46 ++++++
 gcc/target.def                               |  10 ++
 gcc/testsuite/gcc.dg/lto/binary-inline-1_0.c |  15 ++
 gcc/testsuite/gcc.dg/lto/binary-inline-1_1.c |   6 +
 gcc/testsuite/gcc.dg/lto/binary-inline-2_0.c |  15 ++
 gcc/testsuite/gcc.dg/lto/binary-inline-2_1.c |   5 +
 gcc/testsuite/gcc.dg/lto/binary-inline-3_0.c |  15 ++
 gcc/testsuite/gcc.dg/lto/binary-inline-3_1.c |  10 ++
 gcc/tree-streamer-in.cc                      |  58 +++++++-
 lto-plugin/lto-plugin.c                      |  83 +++++++++++
 21 files changed, 547 insertions(+), 8 deletions(-)
 create mode 100644 gcc/testsuite/gcc.dg/lto/binary-inline-1_0.c
 create mode 100644 gcc/testsuite/gcc.dg/lto/binary-inline-1_1.c
 create mode 100644 gcc/testsuite/gcc.dg/lto/binary-inline-2_0.c
 create mode 100644 gcc/testsuite/gcc.dg/lto/binary-inline-2_1.c
 create mode 100644 gcc/testsuite/gcc.dg/lto/binary-inline-3_0.c
 create mode 100644 gcc/testsuite/gcc.dg/lto/binary-inline-3_1.c

diff --git a/gcc/common.opt b/gcc/common.opt
index be5fcc681..78cfc333a 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -1928,6 +1928,21 @@ finline-atomics
 Common Var(flag_inline_atomics) Init(1) Optimization
 Inline __atomic operations when a lock free instruction sequence is available.
 
+fmulti-version-lib=
+Common Joined Var(multi_version_lib_string)
+Use specify LTO stream in mode for specified target (object or lib). If there
+are multiple target files, use commas (,) to separate them and without spaces.
+
+finline-force
+Common Var(flag_inline_force) Init(0) Optimization
+Force perform ipa inline when march options are incompatible between functions.
+
+finline-force=
+Common Joined Var(force_inline_targets_string)
+Force perform ipa inline specified target(object or lib) when march options are
+incompatible between functions.  If there are multiple target files, use commas
+(,) to separate them and without spaces.
+
 fcf-protection
 Common RejectNegative Alias(fcf-protection=,full)
 
@@ -2168,6 +2183,11 @@ flto-partition=
 Common Joined RejectNegative Enum(lto_partition_model) Var(flag_lto_partition) Init(LTO_PARTITION_BALANCED)
 Specify the algorithm to partition symbols and vars at linktime.
 
+flto-compression-algorithm=
+Common Joined Var(lto_compression_algorithm)
+-flto-compression-algorithm=<format> Generate lto compression in zlib/zstd
+format <format>.
+
 ; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h.
 flto-compression-level=
 Common Joined RejectNegative UInteger Var(flag_lto_compression_level) Init(-1) IntegerRange(0, 19)
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 025a3c478..f095f17aa 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -20829,6 +20829,44 @@ aarch64_option_print (FILE *file, int indent, struct cl_target_option *ptr)
 	   arch->name, extension.c_str ());
 }
 
+/* Implement TARGET_OPTION_PRINT_DIFF.  */
+
+static void
+aarch64_option_print_diff (FILE *file, int indent,
+			   struct cl_target_option *ptr1,
+			   struct cl_target_option *ptr2)
+{
+  const char *const cpu1
+    = aarch64_get_tune_cpu (ptr1->x_selected_tune)->name;
+  const struct processor *arch1 = aarch64_get_arch (ptr1->x_selected_arch);
+  std::string extension1
+    = aarch64_get_extension_string_for_isa_flags (ptr1->x_aarch64_isa_flags,
+						  arch1->flags);
+
+  const char *const cpu2
+    = aarch64_get_tune_cpu (ptr2->x_selected_tune)->name;
+  const struct processor *arch2 = aarch64_get_arch (ptr2->x_selected_arch);
+  std::string extension2
+    = aarch64_get_extension_string_for_isa_flags (ptr2->x_aarch64_isa_flags,
+						  arch2->flags);
+
+  if (cpu1 != cpu2 && (!cpu1 || !cpu2 || strcmp (cpu1, cpu2)))
+    fprintf (file, "%*s%s (%s/%s)\n", indent, "",
+	     "cpu", cpu1 ? cpu1 : "(null)", cpu2 ? cpu2 : "(null)");
+
+  if (arch1->name != arch2->name
+      && (!arch1->name || !arch2->name || strcmp (arch1->name, arch2->name)))
+    fprintf (file, "%*s%s (%s/%s)\n", indent, "",
+	     "arch", arch1->name ? arch1->name : "(null)",
+	     arch2->name ? arch2->name : "(null)");
+
+  if (extension1 != extension2)
+    fprintf (file, "%*s%s (%s/%s)\n", indent, "",
+	     "extension",
+	     extension1.empty () ? "(null)" : extension1.c_str (),
+	     extension2.empty () ? "(null)" : extension2.c_str ());
+}
+
 static GTY(()) tree aarch64_previous_fndecl;
 
 void
@@ -31161,6 +31199,9 @@ aarch64_libgcc_floating_mode_supported_p
 #undef TARGET_OPTION_PRINT
 #define TARGET_OPTION_PRINT aarch64_option_print
 
+#undef TARGET_OPTION_PRINT_DIFF
+#define TARGET_OPTION_PRINT_DIFF aarch64_option_print_diff
+
 #undef TARGET_OPTION_VALID_ATTRIBUTE_P
 #define TARGET_OPTION_VALID_ATTRIBUTE_P aarch64_option_valid_attribute_p
 
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 1e96521e6..50bbbbc42 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -10589,6 +10589,12 @@ information in the @code{struct cl_target_option} structure for
 function-specific options.
 @end deftypefn
 
+@deftypefn {Target Hook} void TARGET_OPTION_PRINT_DIFF (FILE *@var{file}, int @var{indent}, struct cl_target_option *@var{ptr1}, struct cl_target_option *@var{ptr2})
+This hook is called to print diff additional target-specific
+information in the ptr1 and ptr2 @code{struct cl_target_option} structure for
+function-specific options.
+@end deftypefn
+
 @deftypefn {Target Hook} bool TARGET_OPTION_PRAGMA_PARSE (tree @var{args}, tree @var{pop_target})
 This target hook parses the options for @code{#pragma GCC target}, which
 sets the target-specific options for functions that occur later in the
diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in
index 2dd515659..cfda60304 100644
--- a/gcc/doc/tm.texi.in
+++ b/gcc/doc/tm.texi.in
@@ -6985,6 +6985,8 @@ on this implementation detail.
 
 @hook TARGET_OPTION_PRINT
 
+@hook TARGET_OPTION_PRINT_DIFF
+
 @hook TARGET_OPTION_PRAGMA_PARSE
 
 @hook TARGET_OPTION_OVERRIDE
diff --git a/gcc/ipa-inline.cc b/gcc/ipa-inline.cc
index f8bb072c4..8d5cc9a84 100644
--- a/gcc/ipa-inline.cc
+++ b/gcc/ipa-inline.cc
@@ -90,6 +90,8 @@ along with GCC; see the file COPYING3.  If not see
 	 the need for offline copy of the function.  */
 
 #include "config.h"
+#define INCLUDE_SET
+#define INCLUDE_STRING
 #include "system.h"
 #include "coretypes.h"
 #include "backend.h"
@@ -127,6 +129,7 @@ typedef fibonacci_node <sreal, cgraph_edge> edge_heap_node_t;
 static int overall_size;
 static profile_count max_count;
 static profile_count spec_rem;
+static std::set<std::string> force_inline_targets;
 
 /* Return false when inlining edge E would lead to violating
    limits on function unit growth or stack usage growth.  
@@ -222,6 +225,38 @@ caller_growth_limits (struct cgraph_edge *e)
   return true;
 }
 
+/* Warn and prompt the user, and output only once for the file pair where
+   the function is located.  */
+
+static void
+prompt_inline_failed_target_option_reason (struct cgraph_edge *e)
+{
+  static std::set<std::pair<void*, void*>> address_pair_set;
+  if (e->inline_failed == CIF_TARGET_OPTION_MISMATCH
+      && !cl_target_option_eq_major (target_opts_for_fn (e->caller->decl),
+	   target_opts_for_fn (e->callee->ultimate_alias_target ()->decl))
+      && e->caller->lto_file_data
+      && e->callee->ultimate_alias_target ()->lto_file_data)
+    {
+      std::pair<void*, void*> addr_pair
+	= std::make_pair (&e->caller->lto_file_data,
+			  &e->callee->ultimate_alias_target ()->lto_file_data);
+      if (address_pair_set.find (addr_pair) != address_pair_set.end ())
+	return;
+
+      address_pair_set.insert (addr_pair);
+      warning (0, "LTO objects caller in: %s, callee in: %s, not inlinable: %s."
+	       " Try to use -finline-force=callee_object_or_lib_name to force "
+	       "inline", e->caller->lto_file_data->file_name,
+	       e->callee->ultimate_alias_target ()->lto_file_data->file_name,
+	       cgraph_inline_failed_string (CIF_TARGET_OPTION_MISMATCH));
+
+      cl_target_option_print_diff
+	(stderr, 2, target_opts_for_fn (e->caller->decl),
+	target_opts_for_fn (e->callee->ultimate_alias_target ()->decl));
+    }
+}
+
 /* Dump info about why inlining has failed.  */
 
 static void
@@ -254,6 +289,8 @@ report_inline_failed_reason (struct cgraph_edge *e)
 	    (dump_file, 2, opts_for_fn (e->caller->decl),
 	     opts_for_fn (e->callee->ultimate_alias_target ()->decl));
     }
+
+  prompt_inline_failed_target_option_reason (e);
 }
 
  /* Decide whether sanitizer-related attributes allow inlining. */
@@ -310,6 +347,77 @@ sanitize_attrs_match_for_inline_p (const_tree caller, const_tree callee)
       (opts_for_fn (caller->decl)->x_##flag		\
        != opts_for_fn (callee->decl)->x_##flag)
 
+/* find related node that has lto_file_data.  */
+
+static cgraph_node *
+find_related_node_lto_file_data (cgraph_node *node)
+{
+  cgraph_node *cur = node;
+
+  while (cur->clone_of)
+    {
+      /* Switch to original node, for example xxx.constprop.x function.  */
+      cur = cur->clone_of;
+      if (cur->lto_file_data)
+	return cur;
+
+      /* Find the lto_file_data information of referring.  */
+      struct ipa_ref *ref = NULL;
+      for (int i = 0; cur->iterate_referring (i, ref); i++)
+	{
+	  struct cgraph_node *cnode = dyn_cast <cgraph_node *> (ref->referring);
+	  if (cnode && cnode->lto_file_data)
+	    return cnode;
+	}
+    }
+
+  return NULL;
+}
+
+/* Determines whether to force inline or force inline only the specified
+   object.  Use for 3 inline extensions:
+   1) CIF_TARGET_OPTION_MISMATCH: cancel the restriction that the target options
+      of different compilation units are different.
+   2) CIF_OVERWRITABLE: indicates that the function is available, which is
+      similar to the "inline" keyword indication.
+   3) CIF_OPTIMIZATION_MISMATCH: cancel the check in the case of fp_expressions,
+      which is similar to the "always_inline" attribute.
+   */
+
+static bool
+can_force_inline_p (cgraph_node *callee)
+{
+  if (!in_lto_p)
+    return false;
+  if (flag_inline_force)
+    return true;
+  if (force_inline_targets_string)
+    {
+      cgraph_node * node = callee;
+      std::string name = "";
+      if (callee->ultimate_alias_target () == NULL
+	  || callee->ultimate_alias_target ()->lto_file_data == NULL)
+	{
+	  node = find_related_node_lto_file_data (callee);
+	  if (node && node->lto_file_data)
+	    name = node->lto_file_data->file_name;
+	}
+      else
+	name = node->ultimate_alias_target ()->lto_file_data->file_name;
+      while (!name.empty () && name.back () == '/')
+	name.erase (name.length () - 1);
+      if (name.empty ())
+	return false;
+      size_t last_slash_pos = name.find_last_of ('/');
+      if (last_slash_pos != std::string::npos
+	  && last_slash_pos != name.length () - 1)
+	name = name.substr (last_slash_pos + 1);
+      if (force_inline_targets.find (name) != force_inline_targets.end ())
+	return true;
+    }
+  return false;
+}
+
 /* Decide if we can inline the edge and possibly update
    inline_failed reason.  
    We check whether inlining is possible at all and whether
@@ -352,7 +460,7 @@ can_inline_edge_p (struct cgraph_edge *e, bool report,
       e->inline_failed = CIF_USES_COMDAT_LOCAL;
       inlinable = false;
     }
-  else if (avail <= AVAIL_INTERPOSABLE)
+  else if (avail <= AVAIL_INTERPOSABLE && !can_force_inline_p (callee))
     {
       e->inline_failed = CIF_OVERWRITABLE;
       inlinable = false;
@@ -378,8 +486,8 @@ can_inline_edge_p (struct cgraph_edge *e, bool report,
       inlinable = false;
     }
   /* Check compatibility of target optimization options.  */
-  else if (!targetm.target_option.can_inline_p (caller->decl,
-						callee->decl))
+  else if (!can_force_inline_p (callee)
+	   && !targetm.target_option.can_inline_p (caller->decl, callee->decl))
     {
       e->inline_failed = CIF_TARGET_OPTION_MISMATCH;
       inlinable = false;
@@ -495,7 +603,8 @@ can_inline_edge_by_limits_p (struct cgraph_edge *e, bool report,
       bool always_inline =
 	     (DECL_DISREGARD_INLINE_LIMITS (callee->decl)
 	      && lookup_attribute ("always_inline",
-				   DECL_ATTRIBUTES (callee->decl)));
+				   DECL_ATTRIBUTES (callee->decl)))
+	     || can_force_inline_p (callee);
       ipa_fn_summary *caller_info = ipa_fn_summaries->get (caller);
       ipa_fn_summary *callee_info = ipa_fn_summaries->get (callee);
 
@@ -2652,6 +2761,27 @@ flatten_remove_node_hook (struct cgraph_node *node, void *data)
   removed->add (node);
 }
 
+/* Parse string that specify forced inlining, separated by commas.  */
+
+static void
+parse_force_inline_targets_string (const char* s)
+{
+  std::string target_string (s);
+  std::string delim = ",";
+  size_t start = 0;
+  size_t end = target_string.find (delim);
+  if (target_string.substr (start, end - start) == "")
+    return;
+
+  while (end != std::string::npos)
+    {
+      force_inline_targets.insert (target_string.substr (start, end - start));
+      start = end + delim.size ();
+      end = target_string.find (delim, start);
+    }
+  force_inline_targets.insert (target_string.substr (start, end - start));
+}
+
 /* Decide on the inlining.  We do so in the topological order to avoid
    expenses on updating data structures.  */
 
@@ -2665,6 +2795,9 @@ ipa_inline (void)
   int cold;
   bool remove_functions = false;
 
+  if (force_inline_targets_string)
+    parse_force_inline_targets_string (force_inline_targets_string);
+
   order = XCNEWVEC (struct cgraph_node *, symtab->cgraph_count);
 
   if (dump_file)
diff --git a/gcc/lto-compress.cc b/gcc/lto-compress.cc
index 27f0992a8..f9d0722a9 100644
--- a/gcc/lto-compress.cc
+++ b/gcc/lto-compress.cc
@@ -305,7 +305,11 @@ void
 lto_end_compression (struct lto_compression_stream *stream)
 {
 #ifdef HAVE_ZSTD_H
-  lto_compression_zstd (stream);
+  if (lto_compression_algorithm
+      && strcmp (lto_compression_algorithm, "zstd") == 0)
+    lto_compression_zstd (stream);
+  else
+    lto_compression_zlib (stream);
 #else
   lto_compression_zlib (stream);
 #endif
diff --git a/gcc/lto-section-in.cc b/gcc/lto-section-in.cc
index ba87c7276..947f8eb15 100644
--- a/gcc/lto-section-in.cc
+++ b/gcc/lto-section-in.cc
@@ -448,6 +448,11 @@ lto_free_function_in_decl_state_for_node (symtab_node *node)
       lto_free_function_in_decl_state (*slot);
       node->lto_file_data->function_decl_states->clear_slot (slot);
     }
+
+  /* In force inline case, keep lto file path information.  */
+  if (in_lto_p && (flag_inline_force || force_inline_targets_string))
+    return;
+
   node->lto_file_data = NULL;
 }
 
diff --git a/gcc/lto-streamer-out.cc b/gcc/lto-streamer-out.cc
index 471f35c31..a574f0f1e 100644
--- a/gcc/lto-streamer-out.cc
+++ b/gcc/lto-streamer-out.cc
@@ -2666,7 +2666,12 @@ produce_lto_section ()
   free (section_name);
 
 #ifdef HAVE_ZSTD_H
-  lto_compression compression = ZSTD;
+  lto_compression compression = ZLIB;
+  if (lto_compression_algorithm
+      && strcmp (lto_compression_algorithm, "zstd") == 0)
+    compression = ZSTD;
+  else
+    compression = ZLIB;
 #else
   lto_compression compression = ZLIB;
 #endif
diff --git a/gcc/lto-wrapper.cc b/gcc/lto-wrapper.cc
index 155ccce57..2b1994652 100644
--- a/gcc/lto-wrapper.cc
+++ b/gcc/lto-wrapper.cc
@@ -491,6 +491,8 @@ merge_and_complain (vec<cl_decoded_option> &decoded_options,
 	|| decoded_options[j].opt_index == OPT_fpic)
       {
 	/* -fno-pic in one unit implies -fno-pic everywhere.  */
+	/* The -fno-pic adjustment here should provide some information hints,
+	   but may affect the use case test of deja.  */
 	if (decoded_options[j].value == 0)
 	  j++;
 	/* If we have no pic option or merge in -fno-pic, we still may turn
@@ -534,6 +536,8 @@ merge_and_complain (vec<cl_decoded_option> &decoded_options,
 	    || decoded_options[j].opt_index == OPT_fpie)
       {
 	/* -fno-pie in one unit implies -fno-pie everywhere.  */
+	/* The -fno-pie adjustment here should provide some information hints,
+	   but may affect the use case test of deja.  */
 	if (decoded_options[j].value == 0)
 	  j++;
 	/* If we have no pie option or merge in -fno-pie, we still preserve
diff --git a/gcc/optc-save-gen.awk b/gcc/optc-save-gen.awk
index 7c012dd4e..94b85b331 100644
--- a/gcc/optc-save-gen.awk
+++ b/gcc/optc-save-gen.awk
@@ -1043,6 +1043,10 @@ for (i = 0; i < n_target_string; i++) {
 	print "";
 }
 
+print "";
+print "  if (targetm.target_option.print_diff)";
+print "    targetm.target_option.print_diff (file, indent, ptr1, ptr2);";
+
 print "}";
 
 print "";
@@ -1160,6 +1164,59 @@ print "  return true;";
 
 print "}";
 
+print "";
+print "/* Compare two target major options.  */";
+print "bool";
+print "cl_target_option_eq_major (struct cl_target_option const *ptr1 ATTRIBUTE_UNUSED,";
+print "                     struct cl_target_option const *ptr2 ATTRIBUTE_UNUSED)";
+print "{";
+n_target_val_major = 0;
+
+for (i = 0; i < n_target_save; i++) {
+	var = target_save_decl[i];
+	sub (" *=.*", "", var);
+	name = var;
+	type = var;
+	sub("^.*[ *]", "", name)
+	sub(" *" name "$", "", type)
+        if (target_save_decl[i] ~ "^const char \\*+[_" alnum "]+$")
+		continue;
+        if (target_save_decl[i] ~ " .*\\[.+\\]+$")
+                continue;
+
+        var_target_val_major[n_target_val_major++] = name;
+}
+if (have_save) {
+	for (i = 0; i < n_opts; i++) {
+		if (flag_set_p("Save", flags[i])) {
+			name = var_name(flags[i])
+			if(name == "")
+				name = "target_flags";
+
+			if(name in var_list_seen)
+				continue;
+
+			var_list_seen[name]++;
+			otype = var_type_struct(flags[i])
+			if (otype ~ "^const char \\**$")
+				continue;
+			var_target_val_major[n_target_val_major++] = "x_" name;
+		}
+	}
+} else {
+	var_target_val_major[n_target_val_major++] = "x_target_flags";
+}
+
+for (i = 0; i < n_target_val_major; i++) {
+	name = var_target_val_major[i]
+	print "  if (ptr1->" name" != ptr2->" name ")";
+	print "    return false;";
+}
+
+print "  return true;";
+
+print "}";
+
 print "";
 print "/* Hash target options  */";
 print "hashval_t";
diff --git a/gcc/opth-gen.awk b/gcc/opth-gen.awk
index 8bba8ec45..cb016e85d 100644
--- a/gcc/opth-gen.awk
+++ b/gcc/opth-gen.awk
@@ -330,6 +330,9 @@ print "";
 print "/* Compare two target option variables from a structure.  */";
 print "extern bool cl_target_option_eq (const struct cl_target_option *, const struct cl_target_option *);";
 print "";
+print "/* Compare two target major option variables from a structure.  */";
+print "extern bool cl_target_option_eq_major (const struct cl_target_option *, const struct cl_target_option *);";
+print "";
 print "/* Free heap memory used by target option variables.  */";
 print "extern void cl_target_option_free (struct cl_target_option *);";
 print "";
diff --git a/gcc/opts.cc b/gcc/opts.cc
index d97f6079f..d9de8747c 100644
--- a/gcc/opts.cc
+++ b/gcc/opts.cc
@@ -2611,6 +2611,32 @@ print_help (struct gcc_options *opts, unsigned int lang_mask,
 			 lang_mask);
 }
 
+/* Checks whether the input forced inline string complies with the
+   restriction.  */
+
+void
+check_force_inline_targets_string (const char *arg, location_t loc)
+{
+  const int MAX_FORCE_INLINE_TARGET_LEN = 10000;
+  const int MAX_NUM_TARGET = 100;
+  __SIZE_TYPE__ length = strlen (arg);
+  int target_num = 1;
+  if (length > MAX_FORCE_INLINE_TARGET_LEN)
+    error_at (loc,
+	      "input string exceeds %d characters to %<-finline_force=%> "
+	      "option: %qs", MAX_FORCE_INLINE_TARGET_LEN, arg);
+  for (__SIZE_TYPE__ i = 0; i < length; i++)
+    {
+      if (arg[i] == ',')
+	{
+	  target_num++;
+	  if (target_num > MAX_NUM_TARGET)
+	    error_at (loc, "input target exceeds %d to %<-finline_force=%> "
+		      "option: %qs", MAX_NUM_TARGET, arg);
+	}
+    }
+}
+
 /* Handle target- and language-independent options.  Return zero to
    generate an "unknown option" message.  Only options that need
    extra handling need to be listed here; if you simply want
@@ -2952,6 +2978,14 @@ common_handle_option (struct gcc_options *opts,
 			   value / 2);
       break;
 
+    case OPT_finline_force:
+      opts->x_force_inline_targets_string = value ? "" : NULL;
+      break;
+
+    case OPT_finline_force_:
+      check_force_inline_targets_string (arg, loc);
+      break;
+
     case OPT_finstrument_functions_exclude_function_list_:
       add_comma_separated_to_vector
 	(&opts->x_flag_instrument_functions_exclude_functions, arg);
@@ -3226,6 +3260,18 @@ common_handle_option (struct gcc_options *opts,
 		  "unrecognized argument to %<-flto=%> option: %qs", arg);
       break;
 
+    case OPT_flto_compression_algorithm_:
+      if (atoi (arg) == 0
+	  && strcmp (arg, "zlib") != 0
+#ifdef HAVE_ZSTD_H
+	  && strcmp (arg, "zstd") != 0
+#endif
+	)
+	error_at (loc,
+		  "unrecognized argument to %<-flto-compression-algorithm=%> "
+		  "option: %qs", arg);
+      break;
+
     case OPT_w:
       dc->dc_inhibit_warnings = true;
       break;
diff --git a/gcc/target.def b/gcc/target.def
index 7183f363d..142858fa3 100644
--- a/gcc/target.def
+++ b/gcc/target.def
@@ -6644,6 +6644,16 @@ information in the @code{struct cl_target_option} structure for\n\
 function-specific options.",
  void, (FILE *file, int indent, struct cl_target_option *ptr), NULL)
 
+/* Function to print any extra target state from the target options
+   structure.  */
+DEFHOOK
+(print_diff,
+ "This hook is called to print diff additional target-specific\n\
+information in the ptr1 and ptr2 @code{struct cl_target_option} structure for\n\
+function-specific options.",
+ void, (FILE *file, int indent, struct cl_target_option *ptr1,
+ struct cl_target_option *ptr2), NULL)
+
 /* Function to parse arguments to be validated for #pragma target, and to
    change the state if the options are valid.  If the first argument is
    NULL, the second argument specifies the default options to use.  Return
diff --git a/gcc/testsuite/gcc.dg/lto/binary-inline-1_0.c b/gcc/testsuite/gcc.dg/lto/binary-inline-1_0.c
new file mode 100644
index 000000000..0b5cd5953
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/binary-inline-1_0.c
@@ -0,0 +1,15 @@
+/* { dg-lto-do link }  */
+/* { dg-require-effective-target shared } */
+/* { dg-extra-ld-options {-shared -finline-force=c_lto_binary-inline-1_1.o} } */
+/* { dg-lto-options {{-O3 -flto -march=armv8.2-a -fdump-ipa-inline-details}} }  */ 
+
+extern double multi_op(float x);
+
+double func_a (float x)
+{
+  double res = 0;
+  res = multi_op (x);
+  return res;
+}
+
+/* { dg-final { scan-wpa-ipa-dump "Inlined 1 calls"  "inline"  } } */
diff --git a/gcc/testsuite/gcc.dg/lto/binary-inline-1_1.c b/gcc/testsuite/gcc.dg/lto/binary-inline-1_1.c
new file mode 100644
index 000000000..8181384b7
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/binary-inline-1_1.c
@@ -0,0 +1,6 @@
+/* { dg-options "-march=armv8.3-a+sve+f64mm+crc+crypto+fp16+i8mm+simd" } */
+
+double multi_op (float x)
+{
+    return x * 2 + 10;
+}
diff --git a/gcc/testsuite/gcc.dg/lto/binary-inline-2_0.c b/gcc/testsuite/gcc.dg/lto/binary-inline-2_0.c
new file mode 100644
index 000000000..e873937d3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/binary-inline-2_0.c
@@ -0,0 +1,15 @@
+/* { dg-lto-do link }  */
+/* { dg-require-effective-target shared } */
+/* { dg-extra-ld-options {-shared -finline-force=c_lto_binary-inline-2_1.o} } */
+/* { dg-lto-options {{-O3 -flto -fPIC -fdump-ipa-inline-details}} }  */ 
+
+extern double multi_op(float x);
+
+double func_a (float x)
+{
+  double res = 0;
+  res = multi_op (x);
+  return res;
+}
+
+/* { dg-final { scan-wpa-ipa-dump "Inlined 1 calls"  "inline"  } } */
diff --git a/gcc/testsuite/gcc.dg/lto/binary-inline-2_1.c b/gcc/testsuite/gcc.dg/lto/binary-inline-2_1.c
new file mode 100644
index 000000000..dc7c4fd9f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/binary-inline-2_1.c
@@ -0,0 +1,5 @@
+
+double multi_op (float x)
+{
+    return x * 2 + 10;
+}
diff --git a/gcc/testsuite/gcc.dg/lto/binary-inline-3_0.c b/gcc/testsuite/gcc.dg/lto/binary-inline-3_0.c
new file mode 100644
index 000000000..c78ba066d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/binary-inline-3_0.c
@@ -0,0 +1,15 @@
+/* { dg-lto-do link }  */
+/* { dg-require-effective-target shared } */
+/* { dg-extra-ld-options {-shared -finline-force=c_lto_binary-inline-3_1.o} } */
+/* { dg-lto-options {{-O3 -flto -fdump-ipa-inline-details}} }  */ 
+
+extern double multi_op(double x);
+
+double func_a (double x)
+{
+  double res = 0;
+  res = multi_op (x);
+  return res;
+}
+
+/* { dg-final { scan-wpa-ipa-dump "Inlined 1 calls"  "inline"  } } */
diff --git a/gcc/testsuite/gcc.dg/lto/binary-inline-3_1.c b/gcc/testsuite/gcc.dg/lto/binary-inline-3_1.c
new file mode 100644
index 000000000..8b505fa0c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/lto/binary-inline-3_1.c
@@ -0,0 +1,10 @@
+/* { dg-options "-O2 -fno-math-errno" }  */
+
+#include <math.h>
+
+double multi_op (double x)
+{
+    double a = 0;
+    a = sqrt (x);
+    return a * 2 + 10;
+}
diff --git a/gcc/tree-streamer-in.cc b/gcc/tree-streamer-in.cc
index a35a810f4..79f819ad8 100644
--- a/gcc/tree-streamer-in.cc
+++ b/gcc/tree-streamer-in.cc
@@ -20,6 +20,9 @@ along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
+#include <cstdio>
+#define INCLUDE_SET
+#define INCLUDE_STRING
 #include "system.h"
 #include "coretypes.h"
 #include "backend.h"
@@ -36,6 +39,47 @@ along with GCC; see the file COPYING3.  If not see
 #include "asan.h"
 #include "opts.h"
 
+/* Parse string that specify forced inlining, separated by commas.  */
+static std::set<std::string> multi_version_libs;
+static void
+parse_multi_version_lib_string (const char* s)
+{
+  std::string target_string (s);
+  std::string delim = ",";
+  size_t start = 0;
+  size_t end = target_string.find (delim);
+  if (target_string.substr (start, end - start) == "")
+    return;
+
+  while (end != std::string::npos)
+    {
+      multi_version_libs.insert (target_string.substr (start, end - start));
+      start = end + delim.size ();
+      end = target_string.find (delim, start);
+    }
+  multi_version_libs.insert (target_string.substr (start, end - start));
+}
+
+static bool
+target_lib_p (std::string name)
+{
+  if (multi_version_libs.empty () && multi_version_lib_string)
+    parse_multi_version_lib_string (multi_version_lib_string);
+  if (multi_version_lib_string)
+    {
+      while (!name.empty () && name.back () == '/')
+	name.erase (name.length () - 1);
+      if (name.empty ())
+	return false;
+      size_t last_slash_pos = name.find_last_of ('/');
+      if (last_slash_pos != std::string::npos
+	  && last_slash_pos != name.length () - 1)
+	name = name.substr (last_slash_pos + 1);
+      if (multi_version_libs.find (name) != multi_version_libs.end ())
+	return true;
+    }
+  return false;
+}
 
 /* Read a STRING_CST from the string table in DATA_IN using input
    block IB.  */
@@ -555,7 +599,12 @@ streamer_read_tree_bitfields (class lto_input_block *ib,
     unpack_ts_translation_unit_decl_value_fields (data_in, &bp, expr);
 
   if (CODE_CONTAINS_STRUCT (code, TS_OPTIMIZATION))
-    cl_optimization_stream_in (data_in, &bp, TREE_OPTIMIZATION (expr));
+  {
+    if (target_lib_p (data_in->file_data->file_name))
+      cl_optimization_stream_in_prev (data_in, &bp, TREE_OPTIMIZATION (expr));
+    else
+      cl_optimization_stream_in (data_in, &bp, TREE_OPTIMIZATION (expr));
+  }
 
   if (CODE_CONTAINS_STRUCT (code, TS_CONSTRUCTOR))
     {
@@ -569,7 +618,12 @@ streamer_read_tree_bitfields (class lto_input_block *ib,
 #ifndef ACCEL_COMPILER
   if (CODE_CONTAINS_STRUCT (code, TS_TARGET_OPTION))
     {
-      cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
+      if (target_lib_p (data_in->file_data->file_name))
+	cl_target_option_stream_in_prev (
+		data_in, &bp, TREE_TARGET_OPTION (expr));
+      else
+	cl_target_option_stream_in (data_in, &bp, TREE_TARGET_OPTION (expr));
+
       if (targetm.target_option.post_stream_in)
 	targetm.target_option.post_stream_in (TREE_TARGET_OPTION (expr));
     }
diff --git a/lto-plugin/lto-plugin.c b/lto-plugin/lto-plugin.c
index 33d49571d..b3301a8a4 100644
--- a/lto-plugin/lto-plugin.c
+++ b/lto-plugin/lto-plugin.c
@@ -89,6 +89,10 @@ along with this program; see the file COPYING3.  If not see
 
 #define LTO_SEGMENT_NAME "__GNU_LTO"
 
+#define GCC_major_version 12
+#define LTO_major_version GCC_major_version
+#define LTO_minor_version 0
+
 /* Return true if STR string starts with PREFIX.  */
 
 static inline bool
@@ -118,6 +122,18 @@ struct plugin_symtab
   unsigned long long id;
 };
 
+/* Structure that represents LTO ELF section with information
+   about the format.  */
+
+struct lto_section
+{
+  int16_t major_version;
+  int16_t minor_version;
+  unsigned char slim_object;
+  unsigned char _padding;
+  uint16_t flags;
+};
+
 /* Encapsulates object file data during symbol scan.  */
 struct plugin_objfile
 {
@@ -126,6 +142,7 @@ struct plugin_objfile
   simple_object_read *objfile;
   struct plugin_symtab *out;
   const struct ld_plugin_input_file *file;
+  struct lto_section version;
 };
 
 /* All that we have to remember about a file. */
@@ -216,6 +233,8 @@ static int gold_version = -1;
    (in fact, only first letter of style arg is checked.)  */
 static enum symbol_style sym_style = ss_none;
 
+static bool multi_version_lto_parse = false;
+
 static void
 check_1 (int gate, enum ld_plugin_level level, const char *text)
 {
@@ -1078,6 +1097,59 @@ err:
   return 0;
 }
 
+/* Process version section of an object file.  */
+
+static int
+process_lto_version (void *data, const char *name, off_t offset, off_t length)
+{
+  struct plugin_objfile *obj = (struct plugin_objfile *)data;
+  char *s;
+  char *secdatastart, *secdata;
+
+  if (!startswith (name, ".gnu.lto_.lto"))
+    return 1;
+
+  s = strrchr (name, '.');
+  if (s)
+    sscanf (s, ".%" PRI_LL "x", &obj->out->id);
+  secdata = secdatastart = xmalloc (length);
+  offset += obj->file->offset;
+  if (offset != lseek (obj->file->fd, offset, SEEK_SET))
+    goto err;
+
+  do
+    {
+      ssize_t got = read (obj->file->fd, secdata, length);
+      if (got == 0)
+	break;
+      else if (got > 0)
+	{
+	  secdata += got;
+	  length -= got;
+	}
+      else if (errno != EINTR)
+	goto err;
+    }
+  while (length > 0);
+  if (length > 0)
+    goto err;
+
+  struct lto_section *lto_info = (struct lto_section *)secdatastart;
+  obj->version = *lto_info;
+
+  obj->found++;
+  free (secdatastart);
+  return 1;
+
+err:
+  if (message)
+    message (LDPL_FATAL, "%s: corrupt object file", obj->file->name);
+  /* Force claim_file_handler to abandon this file.  */
+  obj->found = 0;
+  free (secdatastart);
+  return 0;
+}
+
 /* Process one section of an object file.  */
 
 static int
@@ -1223,6 +1295,15 @@ claim_file_handler (const struct ld_plugin_input_file *file, int *claimed)
   if (obj.found == 0 && obj.offload == 0)
     goto err;
 
+  if (multi_version_lto_parse)
+    {
+      simple_object_find_sections (obj.objfile, process_lto_version, &obj,
+	      &err);
+      if (obj.version.major_version != LTO_major_version
+	  || obj.version.minor_version != LTO_minor_version)
+	goto err;
+    }
+
   if (obj.found > 1)
     resolve_conflicts (&lto_file.symtab, &lto_file.conflicts);
 
@@ -1366,6 +1447,8 @@ process_option (const char *option)
     }
   else if (startswith (option, "-ltrans-objects="))
     ltrans_objects = xstrdup (option + strlen ("-ltrans-objects="));
+  else if (strcmp (option, "-multi-version-lto-parse") == 0)
+    multi_version_lto_parse = true;
   else
     {
       int size;
-- 
2.25.1