[Bug c/36111] New: GCC 4.4.0-20080501 failed to compile openmpi's malloc.c file.

["linuxl4 at sohu dot com" <gcc-bugzilla at gcc dot gnu dot org>]

openmpi-1.2.6
------------------------------
cd openmpi-1.2.6
mkdir i95;cd i95;../configure --prefix=/usr/local/openmpi-1.2.6
make


my $CFLAGS:
----------------
-pipe -ggdb3 -limf -lsvml -O3 -march=pentium4 -mfpmath=sse -funswitch-loops
-ftree-loop-distribution -ftree-loop-linear -ftree-loop-im -fivopts
-funroll-loops -fvariable-expansion-in-unroller -fsplit-ivs-in-unroller
-ftree-vectorize -ftree-vect-loop-version -fvect-cost-model -fgcse-sm
-fgcse-las -fsched-spec-load -fsched-stalled-insns=0
-fsched-stalled-insns-dep=0 -fbounds-check



when compile  openmpi-1.2.6/opal/mca/memory/ptmalloc2/malloc.c
-------------------------------------------------------------------------
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../opal/include
-I../../../../orte/include -I../../../../ompi/include
-I../../../../../opal/mca/memory/ptmalloc2 -DMALLOC_DEBUG=0 -D_GNU_SOURCE=1
-DUSE_TSD_DATA_HACK=1 -DMALLOC_HOOKS=1
-I../../../../../opal/mca/memory/ptmalloc2/sysdeps/pthread
-I../../../../../opal/mca/memory/ptmalloc2/sysdeps/generic -I../../../../..
-I../../../.. -I../../../../../opal/include -I../../../../../orte/include
-I../../../../../ompi/include -DNDEBUG -pipe -ggdb3 -limf -lsvml -O3
-march=pentium4 -mfpmath=sse -funswitch-loops -ftree-loop-distribution
-ftree-loop-linear -ftree-loop-im -fivopts -funroll-loops
-fvariable-expansion-in-unroller -fsplit-ivs-in-unroller -ftree-vectorize
-ftree-vect-loop-version -fvect-cost-model -fgcse-sm -fgcse-las
-fsched-spec-load -fsched-stalled-insns=0 -fsched-stalled-insns-dep=0
-fbounds-check -finline-functions -fno-strict-aliasing -pthread -MT malloc.lo
-MD -MP -MF .deps/malloc.Tpo -c
../../../../../opal/mca/memory/ptmalloc2/malloc.c  -fPIC -DPIC -o
.libs/malloc.o
../../../../../opal/mca/memory/ptmalloc2/malloc.c: In function 'malloc_trim':
../../../../../opal/mca/memory/ptmalloc2/malloc.c:3902: error: invalid rtl
sharing found in the insn
(insn 11 9 12 3
../../../../../opal/mca/memory/ptmalloc2/sysdeps/pthread/malloc-machine.h:51
(parallel [
            (set (reg/v:SI 80 [ r ])
                (asm_operands/v:SI ("xchgl %0, %1") ("=r") 0 [
                        (reg:SI 85)
                        (mem/s/v/j/c:SI (plus:SI (reg:SI 3 bx)
                                (const:SI (unspec:SI [
                                            (symbol_ref:SI ("main_arena")
[flags 0x2] <var_decl 0xb7e18898 main_arena>)
                                        ] 1))) [0 main_arena.mutex.lock+0 S4
A256])
                    ]
                     [
                        (asm_input:SI ("0") 0)
                        (asm_input:SI ("m") 0)
                    ] 2207718))
            (set (mem/s/v/j/c:SI (plus:SI (reg:SI 3 bx)
                        (const:SI (unspec:SI [
                                    (symbol_ref:SI ("main_arena") [flags 0x2]
<var_decl 0xb7e18898 main_arena>)
                                ] 1))) [0 main_arena.mutex.lock+0 S4 A256])
                (asm_operands/v:SI ("xchgl %0, %1") ("=m") 1 [
                        (reg:SI 85)
                        (mem/s/v/j/c:SI (plus:SI (reg:SI 3 bx)
                                (const:SI (unspec:SI [
                                            (symbol_ref:SI ("main_arena")
[flags 0x2] <var_decl 0xb7e18898 main_arena>)
                                        ] 1))) [0 main_arena.mutex.lock+0 S4
A256])
                    ]
                     [
                        (asm_input:SI ("0") 0)
                        (asm_input:SI ("m") 0)
                    ] 2207718))
            (clobber (reg:QI 18 fpsr))
            (clobber (reg:QI 17 flags))
            (clobber (mem:BLK (scratch) [0 A8]))
        ]) -1 (expr_list:REG_DEAD (reg:SI 85)
        (expr_list:REG_UNUSED (reg:QI 18 fpsr)
            (expr_list:REG_UNUSED (reg:QI 17 flags)
                (nil)))))
../../../../../opal/mca/memory/ptmalloc2/malloc.c:3902: error: shared rtx
(const:SI (unspec:SI [
            (symbol_ref:SI ("main_arena") [flags 0x2] <var_decl 0xb7e18898
main_arena>)
        ] 1))
../../../../../opal/mca/memory/ptmalloc2/malloc.c:3902: internal compiler
error: internal consistency failure
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make: *** [malloc.lo] Error 1


-- 
           Summary: GCC 4.4.0-20080501 failed to compile openmpi's malloc.c
                    file.
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: linuxl4 at sohu dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36111