[Bug target/14542] New: ICE on simple source

[Bug target/14542] New: ICE on simple source

[gcc-bugzilla at gcc dot gnu dot org]

Here is is ICE message:

$ m6811-elf-gcc -c -m68hc12 -O3 -fomit-frame-pointer  strcat.c
strcat.c: In function `strcat':
strcat.c:18: internal compiler error: in verify_local_live_at_start, at flow.c:546
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Environment:
System: Linux namsh 2.6.4 #66 Thu Mar 11 22:55:35 KST 2004 i686 athlon i386 GNU/Linux
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: m6811-unknown-none
configured with: ../configure --disable-nls --target=m6811-elf --prefix=/usr/GNUHCS --program-prefix=m6811-elf- --with-gnu-ld --with-gnu-as --disable-shared --enable-languages=c,c++ --without-headers --with-newlib

How-To-Repeat:
Here is a source:

/* strcat.c */
char *strcat(char *d, const char *s)
{
    char *p = d;
    while (*d) d++;
    while ((*d = *s) != '\0') { d++; s++; }
    return p;
}
------- Additional Comments From namsh at kldp dot org  2004-03-12 01:56 -------
Fix:
	1.  Do not use '-fomit-frame-pointer'
	2.  Use '-O2' instead of '-O3'.

-- 
           Summary: ICE on simple source
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: namsh at kldp dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: m6811-unknown-none


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542

[Bug target/14542] ICE on simple source

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-03-12 04:53 -------
      /* After reload, there are no pseudos, nor subregs of multi-word
         registers.  The regsets should exactly match.  */

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   GCC host triplet|i686-pc-linux-gnu           |
 GCC target triplet|m6811-unknown-none          |m6811hc-unknown-none
           Keywords|                            |ice-on-valid-code
            Version|3.4                         |3.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542

[Bug target/14542] ICE on simple source

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-03-19 06:45 -------
Confirmed.

live_at_start mismatch in bb 0, aborting
New:

first = 0x42020db0 current = 0x42020db0 indx = 0
        0x42020db0 next = 0x0 prev = 0x0 indx = 0
                bits = { 1 3 }
Old:
;; basic block 0, loop depth 0, count 0
;; prev block -1, next block 1
;; pred:       ENTRY [100.0%]  (fallthru)
;; succ:       1 [100.0%]  (fallthru)
;; Registers live at start:  0 [x] 1 [d] 3 [sp]
(note:HI 61 2 126 0 [bb 0] NOTE_INSN_BASIC_BLOCK)
(note 126 61 5 0 NOTE_INSN_PROLOGUE_END)
(note:HI 5 126 143 0 NOTE_INSN_FUNCTION_BEG)
(insn 143 5 144 0 (set (mem:HI (pre_dec:HI (reg/f:HI 3 sp)) [0 S2 A8])
        (reg:HI 1 d [ d ])) 26 {*movhi_68hc12} (nil)
    (nil))
(insn 144 143 133 0 (set (reg:HI 0 x)
        (reg:HI 1 d [ d ])) 26 {*movhi_68hc12} (nil)
    (expr_list:REG_DEAD (reg:HI 1 d [ d ])
        (nil)))
;; Registers live at end:  0 [x] 3 [sp]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-03-19 06:45:50
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542

[Bug target/14542] ICE on simple source

[kazu at cs dot umass dot edu]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ciceron at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542

[Bug target/14542] ICE on simple source

[ciceron at gcc dot gnu dot org]

------- Additional Comments From ciceron at gcc dot gnu dot org  2004-06-06 09:48 -------
I suspect this is related to the -fweb that was activated when -O3
(disabled completely in m6811 in 3.4).  Going to check.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |ciceron at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542

[Bug target/14542] ICE on simple source

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-06-06 16:56 -------
Subject: Bug 14542

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	ciceron@gcc.gnu.org	2004-06-06 16:56:04

Modified files:
	gcc            : ChangeLog 
	gcc/config/m68hc11: m68hc11.md 

Log message:
	PR target/14542
	* config/m68hc11/m68hc11.md (move peephole2): Emit a use note to avoid
	a live change of a register after peephole replacement.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.469&r2=2.2326.2.470
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/m68hc11/m68hc11.md.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.54.10.6&r2=1.54.10.7



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542

[Bug target/14542] ICE on simple source

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-06-06 17:01 -------
Subject: Bug 14542

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	ciceron@gcc.gnu.org	2004-06-06 17:01:10

Modified files:
	gcc            : ChangeLog 
	gcc/config/m68hc11: m68hc11.md 

Log message:
	PR target/14542
	* config/m68hc11/m68hc11.md (move peephole2): Emit a use note to avoid
	a live change of a register after peephole replacement.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.3854&r2=2.3855
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/m68hc11/m68hc11.md.diff?cvsroot=gcc&r1=1.65&r2=1.66



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542

[Bug target/14542] ICE on simple source

[ciceron at gcc dot gnu dot org]

------- Additional Comments From ciceron at gcc dot gnu dot org  2004-06-06 17:03 -------
Fixed by http://gcc.gnu.org/ml/gcc-patches/2004-06/msg00294.html


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542

[Bug target/14542] ICE on simple source

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |3.4.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14542