dwarf2out.c (output_fde): When doing hot/cold partitioning...

	* dwarf2out.c (output_fde): When doing hot/cold partitioning, use
	fde->dw_fde_begin as begin label instead of hot/cold label.
	Use LLSDAC label instead of LLSDA for second section lsda.
	(dwarf2out_do_cfi_startproc): Add SECOND argument.  Use LLSDAC
	label instead of LLSDA if it is true.
	(dwarf2out_begin_prologue, dwarf2out_switch_text_section): Adjust
	callers.
	* except.c (add_call_site, dw2_size_of_call_site_table): Add
	SECTION argument.  Use it as index into crtl->eh.call_site_record
	array.
	(dw2_output_call_site_table): Likewise.  Add CS_FORMAT argument,
	use it to determine how to print table entries instead of using
	#ifdef HAVE_AS_LEB128.  For SECTION > 0 use hot resp. cold
	label instead of normal begin label as base.
	(sjlj_assign_call_site_values): Adjust add_call_site caller.
	(convert_to_eh_region_ranges): When doing hot/cold partitioning,
	ensure no EH range spans between sections and that landing pads
	are always in the corresponding section.
	(sjlj_size_of_call_site_table, sjlj_output_call_site_table): Adjust
	for crtl->eh.call_site_record being an array rather than scalar.
	(output_one_function_exception_table): New function, copied
	from output_function_exception_table.  Adjust
	dw2_size_of_call_site_table, dw2_output_call_site_table
	callers.  For SECOND section use *C suffixed labels.
	(output_function_exception_table): Call
	output_one_function_exception_table and, when doing hot/cold
	partitioning, also another time for the second section.
	* opts.c: Include except.h.
	(decode_options): Allow -freorder-blocks-and-partition with
	exceptions, unless SJLJ or TARGET_UNWIND_INFO.
	* Makefile.in (opts.o): Depend on $(EXCEPT_H).
	* function.h (struct rtl_eh): Change call_site_record from
	scalar into array of 2 elements.

	* g++.dg/tree-prof/partition1.C: New test.

From-SVN: r150553

1 files changed, 22 insertions, 5 deletions

diff --git a/gcc/opts.c b/gcc/opts.c
index 33635dd..59c24b6 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -43,6 +43,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "dbgcnt.h"
 #include "debug.h"
 #include "plugin.h"
+#include "except.h"
 
 /* Value of the -G xx switch, and whether it was passed or not.  */
 unsigned HOST_WIDE_INT g_switch_value;
@@ -1036,10 +1037,15 @@ decode_options (unsigned int argc, const char **argv)
      generating unwind info.  If flag_exceptions is turned on we need to
      turn off the partitioning optimization.  */
 
-  if (flag_exceptions && flag_reorder_blocks_and_partition)
+  if (flag_exceptions && flag_reorder_blocks_and_partition
+      && (USING_SJLJ_EXCEPTIONS
+#ifdef TARGET_UNWIND_INFO
+	  || 1
+#endif
+	 ))
     {
       inform (input_location, 
-	      "-freorder-blocks-and-partition does not work with exceptions");
+	      "-freorder-blocks-and-partition does not work with exceptions on this architecture");
       flag_reorder_blocks_and_partition = 0;
       flag_reorder_blocks = 1;
     }
@@ -1048,9 +1054,15 @@ decode_options (unsigned int argc, const char **argv)
      optimization.  */
 
   if (flag_unwind_tables && ! targetm.unwind_tables_default
-      && flag_reorder_blocks_and_partition)
+      && flag_reorder_blocks_and_partition
+      && (USING_SJLJ_EXCEPTIONS
+#ifdef TARGET_UNWIND_INFO
+	  || 1
+#endif
+	 ))
     {
-      inform (input_location, "-freorder-blocks-and-partition does not support unwind info");
+      inform (input_location,
+	      "-freorder-blocks-and-partition does not support unwind info on this architecture");
       flag_reorder_blocks_and_partition = 0;
       flag_reorder_blocks = 1;
     }
@@ -1061,7 +1073,12 @@ decode_options (unsigned int argc, const char **argv)
 
   if (flag_reorder_blocks_and_partition
       && (!targetm.have_named_sections
-	  || (flag_unwind_tables && targetm.unwind_tables_default)))
+	  || (flag_unwind_tables && targetm.unwind_tables_default
+	      && (USING_SJLJ_EXCEPTIONS
+#ifdef TARGET_UNWIND_INFO
+		  || 1
+#endif
+		 ))))
     {
       inform (input_location,
 	      "-freorder-blocks-and-partition does not work on this architecture");