Re: target/10413: SH ICE 3.3 branch

Re: target/10413: SH ICE 3.3 branch

[Dara Hazeghi]

The following reply was made to PR target/10413; it has been noted by GNATS.

From: Dara Hazeghi <dhazeghi@yahoo.com>
To: gcc-gnats@gcc.gnu.org, dhananjayd@kpitcummins.com
Cc:  
Subject: Re: target/10413: SH ICE 3.3 branch
Date: Sat, 10 May 2003 02:32:41 -0700

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
 trail&database=gcc&pr=10413
 
 Hello,
 
 I can confirm that the testcase in this report fails to compile with  
 gcc 3.2.3 or 3.3 branch. With mainline (20030509) however, it compiles  
 fine with all the options specified.
 
 Dara
 

target/10413: SH ICE 3.3 branch

[dhananjayd]

>Number:         10413
>Category:       target
>Synopsis:       SH ICE 3.3 branch
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Apr 15 12:06:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     dhananjayd@kpitcummins.com
>Release:        3.2, 3.3 branch
>Organization:
>Environment:
Linux X SH
>Description:
The source code below if compiled with sh-elf-gcc -S -m2 -O2 -mhitachi gives Internal Compiler error.

[dhananjayd@Linuxsrv5 gnu]$ ~/sh2e-elf/bin/sh-elf-gcc -S -m2  -O2 -mhitachi bug.c  
bug.c: In function `func1':
bug.c:39: error: insn does not satisfy its constraints:
(insn:HI 29 28 160 0 0x4015b980 (set (reg/v:SI 148 mach [166])
        (reg:SI 149 macl)) 122 {movsi_i} (insn_list 28 (nil))
    (expr_list:REG_EQUAL (mult:SI (reg:SI 0 r0 [172])
            (reg/v:SI 11 r11 [163]))
        (nil)))
bug.c:39: internal compiler error: in reload_cse_simplify_operands, at reload1.c
:8335
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

-----------------------------------------------------------
int func0 (unsigned long  address,
    unsigned long  stride,
    char*          p_buffer,
    unsigned long  count,
    unsigned short chk);

int func1 (unsigned short type,
    unsigned long  count,
    unsigned long  address,
    unsigned long  stride,
    void*          buffer)
{
  unsigned long  remainder = count;
  unsigned long  block_size;
  unsigned short chk;
  char*          p_buffer = buffer;
  int            err      = 0;

  block_size = 0x3ff0/8/stride * stride;

  while (remainder)
    {
      if (type == 0)
        {
          while (1)
            {
              count = (remainder < block_size) ? remainder : block_size;
              err   = func0 (address, stride, p_buffer, count, chk = 0);
              if (err) break;
            }
          count     = (count < 2) ? count : count - 1;
          p_buffer += count;
        }
      remainder -= count;
      address   += count * stride;
    }
  return err;
}

-----------------------------------------------------------

It is trying to load macl into mach but no such instruction exists. The problem disappears in mainline but could appear with different test case with more register pressure.
>How-To-Repeat:
Try compiling above test case with sh-elf-gcc -S -m2  -O2 -mhitachi bug.c  
>Fix:
Remove -mhitachi option.
>Release-Note:
>Audit-Trail:
>Unformatted:
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