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Date: Wed, 09 Jun 2010 14:01:00 -0000
Subject: [Bug rtl-optimization/44481]  New: __builtin_parity() causes ICE in trunc_int_for_mode()
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When compiling the following program with -O2, gcc gives an ICE "internal
compiler error: in trunc_int_for_mode, at explow.c:56".

Versions affected:
gcc (GCC) 4.4.3 20100127 (Red Hat 4.4.3-4)
gcc (GCC) 4.5.1 20100521 (prerelease)

================================================
static inline unsigned parity(unsigned x)
{
  return (unsigned) __builtin_parity(x);
}

unsigned f(unsigned rpoly)
{
  return parity(rpoly & 1) ^ parity(rpoly & 6);
}
================================================


-- 
           Summary: __builtin_parity() causes ICE in trunc_int_for_mode()
           Product: gcc
           Version: 4.5.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rainy6144 at gmail dot com
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44481