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Date: Wed, 31 Mar 2010 13:45:00 -0000
Subject: [Bug c/43603]  New: gcc-4.4.3 ICE on ia64 with -O3
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From: "mariah dot lenox at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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/* 
% uname -a
Linux cleo 2.6.18-128.1.1.el5 #1 SMP Mon Jan 26 13:57:09 EST 2009 ia64 ia64
ia64 GNU/Linux
% 
% gcc -v
Using built-in specs.
Target: ia64-unknown-linux-gnu
Configured with: /usr/local/gcc-4.4.3/src/gcc-4.4.3/configure
--enable-languages=c,c++,fortran --with-gnu-as
--with-as=/usr/local/binutils-2.20/ia64-Linux-rhel-gcc-4.4.2/bin/as
--with-gnu-ld
--with-ld=/usr/local/binutils-2.20/ia64-Linux-rhel-gcc-4.4.2/bin/ld
--with-gmp=/usr/local/mpir-1.2.2/ia64-Linux-rhel-gcc-4.4.2
--with-mpfr=/usr/local/mpfr-2.4.2/ia64-Linux-rhel-mpir-1.2.2-gcc-4.4.2
--prefix=/usr/local/gcc-4.4.3/ia64-Linux-rhel
Thread model: posix
gcc version 4.4.3 (GCC) 
%
% gcc -O2 -c foo.c
%
% gcc -O3 -c foo.c
foo.c: In function ‘foo’:
foo.c:35: error: unrecognizable insn:
(insn:TI 222 209 248 19 (parallel [
            (set (reg:SI 135 f7)
                (asm_operands:SI ("xma.hu %0 = %2, %3, f0
        xma.l %1 = %2, %3, f0") ("=&f") 0 [
                        (reg:SI 136 f8)
                        (reg:SI 130 f2 [394])
                    ]
                     [
                        (asm_input:SI ("f") 0)
                        (asm_input:SI ("f") 0)
                    ] 2896))
            (set (reg/v:SI 134 f6 [orig:370 b ] [370])
                (asm_operands:SI ("xma.hu %0 = %2, %3, f0
        xma.l %1 = %2, %3, f0") ("=f") 1 [
                        (reg:SI 136 f8)
                        (reg:SI 130 f2 [394])
                    ]
                     [
                        (asm_input:SI ("f") 0)
                        (asm_input:SI ("f") 0)
                    ] 2896))
        ]) -1 (nil))
foo.c:35: internal compiler error: in get_attr_first_insn, at
config/ia64/itanium2.md:1909
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
%
*/

int 
foo( long * np, int * dp, int qn)
{
  int i;
  int n0;
  int d0;
  int a;
  int b;
  int c;
  int d;

  a = 1;
  b = 0;
  c = 1;
  d = 1;

  d0 = dp[0];

  for (i = qn; i >= 0; i--) {
    if (bar((c == 0)) && (np[1] == d0)) {
      car(np - 3, dp, 3);
    } else { 
      __asm__ ("xma.hu %0 = %2, %3, f0\n\txma.l %1 = %2, %3, f0" : "=&f" ((a)), 
"=f" (b) : "f" ((c)), "f" ((d))); 
      n0 = np[0]; 
      if (n0 < d0) 
        c = 1; 
      else 
        c = 0; 

    }
    *--np = a;
  }

  return 0;
}


-- 
           Summary: gcc-4.4.3 ICE on ia64 with -O3
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mariah dot lenox at gmail dot com
 GCC build triplet: ia64-unknown-linux-gnu
  GCC host triplet: ia64-unknown-linux-gnu
GCC target triplet: ia64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43603