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Date: Wed, 22 Aug 2007 22:27:00 -0000
Subject: [Bug rtl-optimization/33151]  New: Invalid insn with pre_inc
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From: "pthaugen at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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I'm hitting the following on 6 SPEC CPU2006 benchmarks, some with pre_inc
others with pre_modify.

run/build_base_gcc411-base.0001> cat junk.c
extern double cos (double x);
extern double sin (double x);

double
pre_inc_ice (int n)
{
  int i;
  double sc, ss, arg;

  sc = ss = 0.0;
  for (i = 0; i < n; i++)
    {
      arg = 1.0 / n;
      sc += cos (arg);
      ss += sin (arg);
    }
  return sc + ss;
}
run/build_base_gcc411-base.0001> /opt/biarch/gcc433-xlc-perf-2/bin/gcc -S -m32
-O2 junk.c
junk.c: In function 'pre_inc_ice':
junk.c:18: error: unrecognizable insn:
(insn 84 80 85 4 junk.c:11 (set (reg/f:SI 155)
        (pre_inc:SI (reg/f:SI 139))) -1 (expr_list:REG_INC (reg/f:SI 139)
        (nil)))
junk.c:18: internal compiler error: in extract_insn, at recog.c:1990
Please submit a full bug report,
with preprocessed source if appropriate.


-- 
           Summary: Invalid insn with pre_inc
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pthaugen at gcc dot gnu dot org
 GCC build triplet: powerpc64-linux
  GCC host triplet: powerpc64-linux
GCC target triplet: powerpc64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33151