[Bug target/37048] New: [4.4 Regression] Revision 138835 breaks bootstrap

[hjl dot tools at gmail dot com]

Revision 138835 breaks bootstrap on Linux/x86-64:

[hjl@gnu-33 zlib]$ /export/gnu/import/svn/gcc-test/bld/./prev-gcc/xgcc
-B/export/gnu/import/svn/gcc-test/bld/./prev-gcc/
-B/usr/local/x86_64-unknown-linux-gnu/bin/ -DPACKAGE_NAME=\"\"
-DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\" -DPACKAGE_STRING=\"\"
-DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"zlib\" -DVERSION=\"1.1.4\"
-DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1
-DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1
-DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\"
-DHAVE_STDLIB_H=1 -DHAVE_UNISTD_H=1 -DHAVE_GETPAGESIZE=1 -DHAVE_MMAP=1
-DHAVE_MEMCPY=1 -DHAVE_STRERROR=1 -DHAVE_UNISTD_H=1  -I. -I../../src/zlib    
-g -O2 -c -o libz_a-gzio.o `test -f 'gzio.c' || echo '../../src/zlib/'`gzio.c
../../src/zlib/gzio.c: In function âgzseekâ:
../../src/zlib/gzio.c:852: error: unrecognizable insn:
(insn 53 248 54 15 ../../src/zlib/gzio.c:792 (parallel [
            (set (mem:QI (reg:DI 77) [0 S1 A8])
                (subreg:QI (reg:SI 79) 0))
            (set (reg:DI 77)
                (plus:DI (reg:DI 77)
                    (const_int 1 [0x1])))
        ]) -1 (nil))
../../src/zlib/gzio.c:852: internal compiler error: in extract_insn, at
recog.c:1988
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-33 zlib]$

Gcc was configured with  --enable-checking=assert --enable-clocale=gnu
--with-sy
stem-zlib --enable-shared --with-demangler-in-ld.


-- 
           Summary: [4.4 Regression] Revision 138835 breaks bootstrap
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37048