From patchwork Tue Dec 13 13:40:43 2011
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Subject: : Guard the call to begin_epilogue
Date: Tue, 13 Dec 2011 03:40:43 -0000
From: Tristan Gingold <gingold@adacore.com>
X-Patchwork-Id: 131090
Message-Id: <9C76E78B-829D-4B05-9A01-25A71BA6BBAE@adacore.com>
To: GCC Patches <gcc-patches@gcc.gnu.org>

Hi,

currently, the call to begin_epilogue debug hook in final_scan_insn is unconditional and therefore occurs even when DECL_IGNORED_P is true.  This is not what is done for other debug hooks, and leads to ICE on VMS (the only platform that defines the hook) as last_filename is NULL.

Tested on alpha64-dec-openvms,
committed to trunk as obvious.

Tristan.

2011-12-13  Tristan Gingold  <gingold@adacore.com>

	* final.c (final_scan_insn): Guard the call to begin_epilogue
	debug hook.


Index: final.c
===================================================================
--- final.c	(revision 182280)
+++ final.c	(working copy)
@@ -1973,7 +1973,8 @@
 	  break;
 
 	case NOTE_INSN_EPILOGUE_BEG:
-	  (*debug_hooks->begin_epilogue) (last_linenum, last_filename);
+          if (!DECL_IGNORED_P (current_function_decl))
+            (*debug_hooks->begin_epilogue) (last_linenum, last_filename);
 	  targetm.asm_out.function_begin_epilogue (file);
 	  break;