svn commit: r227665 - releng/9.0/contrib/gcc/config/arm

[Fabien Thomas]

Author: fabient
Date: Fri Nov 18 14:56:06 2011
New Revision: 227665
URL: http://svn.freebsd.org/changeset/base/227665

Log:
  MFC r227391:
  Import gcc fix for -fstack-protector that produces segfaulting
  binaries on arm/armel.
  
  Related gcc bug:
  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35965
  
  Author kindly accepted that all of his patches can be use as GPLv2.
  
  PR: 161128
  Approved by: re (kib)

Modified:
  releng/9.0/contrib/gcc/config/arm/arm.c
Directory Properties:
  releng/9.0/contrib/gcc/   (props changed)

Modified: releng/9.0/contrib/gcc/config/arm/arm.c
==============================================================================
--- releng/9.0/contrib/gcc/config/arm/arm.c	Fri Nov 18 14:41:48 2011	(r227664)
+++ releng/9.0/contrib/gcc/config/arm/arm.c	Fri Nov 18 14:56:06 2011	(r227665)
@@ -3217,7 +3217,8 @@ legitimize_pic_address (rtx orig, enum m
 	  gcc_assert (!no_new_pseudos);
 	  if (arm_pic_register != INVALID_REGNUM)
 	    {
-	      cfun->machine->pic_reg = gen_rtx_REG (Pmode, arm_pic_register);
+	      if (!cfun->machine->pic_reg)
+		cfun->machine->pic_reg = gen_rtx_REG (Pmode, arm_pic_register);
 
 	      /* Play games to avoid marking the function as needing pic
 		 if we are being called as part of the cost-estimation
@@ -3229,7 +3230,8 @@ legitimize_pic_address (rtx orig, enum m
 	    {
 	      rtx seq;
 
-	      cfun->machine->pic_reg = gen_reg_rtx (Pmode);
+	      if (!cfun->machine->pic_reg)
+		  cfun->machine->pic_reg = gen_reg_rtx (Pmode);
 
 	      /* Play games to avoid marking the function as needing pic
 		 if we are being called as part of the cost-estimation