[Bug target/33791] New: x86 out of registers ICE with -fschedule-insns -march=core2

["astrange at ithinksw dot com" <gcc-bugzilla at gcc dot gnu dot org>]

> /usr/local/gcc43/bin/gcc -vUsing built-in specs.
Target: i386-apple-darwin8.10.1
Configured with: ../gcc/configure --prefix=/usr/local/gcc43 --with-arch=nocona
--with-tune=nocona --with-gmp=/sw --with-system-zlib
--enable-languages=c,c++,objc,obj-c++
Thread model: posix
gcc version 4.3.0 20071015 (experimental) (GCC) 

> /usr/local/gcc43/bin/gcc -O1 -fschedule-insns -march=core2 -S gcc-sched-ice-32.i
gcc-sched-ice-32.i: In function 'decode_init':
gcc-sched-ice-32.i:177: warning: assignment from incompatible pointer type
gcc-sched-ice-32.i: In function 'decode_nal_units':
gcc-sched-ice-32.i:332: warning: assignment from incompatible pointer type
gcc-sched-ice-32.i: In function 'hl_decode_mb_internal':
gcc-sched-ice-32.i:275: error: unable to find a register to spill in class
'GENERAL_REGS'
gcc-sched-ice-32.i:275: error: this is the insn:
(insn 222 221 232 26 gcc-sched-ice-32.i:183 (set (mem:DI (plus:SI (reg:SI 170)
                (reg/f:SI 169 [ <variable>.top_borders ])) [0 S8 A64])
        (reg:DI 172)) 88 {*movdi_2} (expr_list:REG_DEAD (reg:DI 172)
        (expr_list:REG_DEAD (reg:SI 170)
            (expr_list:REG_DEAD (reg/f:SI 169 [ <variable>.top_borders ])
                (nil)))))
gcc-sched-ice-32.i:275: internal compiler error: in spill_failure, at
reload1.c:2001
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Delta-reduced so warnings don't mean anything.
The original (large) source has variants on the same error (different insns)
with and without -m64/no-pic/omit-frame-pointer.


-- 
           Summary: x86 out of registers ICE with -fschedule-insns -
                    march=core2
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: astrange at ithinksw dot com
 GCC build triplet: i386-apple-darwin8.10.1
  GCC host triplet: i386-apple-darwin8.10.1
GCC target triplet: i386-apple-darwin8.10.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33791