other/8403: ICE in gcc/testsuite/gcc.c-torture/execute/2001012 2-1.c for sh-elf target

[Naveen Sharma, Noida]

The following reply was made to PR middle-end/8403; it has been noted by GNATS.

From: "Naveen Sharma, Noida" <naveens@noida.hcltech.com>
To: gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org
Cc: gcc-patches@gcc.gnu.org
Subject: Re:other/8403: ICE in gcc/testsuite/gcc.c-torture/execute/2001012
	2-1.c for sh-elf target
Date: Thu, 19 Dec 2002 12:24:31 +0530

 Hi,
 
 This fixes PR 8403.
 
 The fix is pretty obvious. 
 The function has_hard_reg_initial_val can return a MEM rtx too depending 
 on definition of ALLOCATE_INITIAL_VALUE macro. So the patch just checks 
 if it is REG before using REGNO macro.
 
 Incidently this also fixes bootstrap error(while building libgcc) 
 on mainline for sh-elf cross when rtl checking is enabled.
 
 Tested for sh-elf-target.
 
 Best Regards,
   Naveen Sharma.
 
 
 Index: gcc/ChangeLog
 ===================================================================
 RCS file: /cvsroot/gcc/gcc/gcc/ChangeLog,v
 retrieving revision 1.16136
 diff -c -2 -p -r1.16136 ChangeLog
 *** gcc/ChangeLog	18 Dec 2002 06:36:45 -0000	1.16136
 --- gcc/ChangeLog	19 Dec 2002 06:36:34 -0000
 ***************
 *** 1,2 ****
 --- 1,7 ----
 + 2002-12-19  Naveen Sharma  <naveens@noida.hcltech.com>
 + 
 + 	* config/sh/sh.c (calc_live_regs): Check return code of
 + 	has_hard_reg_initial_val for REG before using the REGNO macro.
 + 	
   2002-12-17  Jason Merrill  <jason@redhat.com>
   
 Index: gcc/config/sh/sh.c
 ===================================================================
 RCS file: /cvsroot/gcc/gcc/gcc/config/sh/sh.c,v
 retrieving revision 1.189
 diff -c -2 -p -r1.189 sh.c
 *** gcc/config/sh/sh.c	16 Dec 2002 18:21:54 -0000	1.189
 --- gcc/config/sh/sh.c	19 Dec 2002 06:36:52 -0000
 *************** calc_live_regs (count_ptr, live_regs_mas
 *** 4421,4426 ****
       {
         rtx pr_initial = has_hard_reg_initial_val (Pmode, PR_REG);
 !       pr_live = (pr_initial
 ! 		 ? REGNO (pr_initial) != (PR_REG) : regs_ever_live[PR_REG]);
       }
     /* Force PR to be live if the prologue has to call the SHmedia
 --- 4421,4426 ----
       {
         rtx pr_initial = has_hard_reg_initial_val (Pmode, PR_REG);
 !       pr_live = (pr_initial && GET_CODE (pr_initial) == REG)
 ! 		 ? REGNO (pr_initial) != (PR_REG) : regs_ever_live[PR_REG];
       }
     /* Force PR to be live if the prologue has to call the SHmedia