[Bug c/21710] New: gcc-3.4.4 ICE when compiling glibc-2.3.5 for arm

[mikpe at csd dot uu dot se]

/*
 * gcc3_arm_bug.c
 * Written by Mikael Pettersson, mikpe@csd.uu.se, 2005-05-22.
 * Adapted from glibc-2.3.5/sysdeps/generic/s_fmax.c
 *
 * gcc-3.4.4 configured for arm-unknown-linux gets an
 * internal compiler error when compiling this program
 * with optimisation enabled:
 *
 * gcc3_arm_bug.c: In function `__fmax':
 * gcc3_arm_bug.c:28: internal compiler error: in elim_reg_cond, at flow.c:3267
 *
 * Notes:
 * - gcc-3.4.4 was built as a cross-compiler for arm-unknown-linux
 *   hosted on i686-pc-linux-gnu. The cross-compilation toolchain
 *   consisted of binutils-2.16, gcc-3.4.4, glibc-2.3.5, and kernel
 *   headers from linux-2.4.30.
 * - Using -O0 prevents the ICE.
 * - gcc-3.4.4, gcc-3.3.6, and gcc-3.2.3 all exhibit this bug.
 * - gcc-4.0.1 (20050521) does not have this bug.
 */
extern int __isnan (double __value);

double
__fmax (double x, double y)
{
    return (__builtin_isgreaterequal(x, y) || __isnan (y)) ? x : y;
}

int main(void) { return 0; }

-- 
           Summary: gcc-3.4.4 ICE when compiling glibc-2.3.5 for arm
           Product: gcc
           Version: 3.4.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mikpe at csd dot uu dot se
                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: arm-unknown-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21710