[Bug target/66358] New: [5/6 Regression] [SH] ICE: in extract_constrain_insn, at recog.c:2232

["kkojima at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66358

            Bug ID: 66358
           Summary: [5/6 Regression] [SH] ICE: in extract_constrain_insn,
                    at recog.c:2232
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kkojima at gcc dot gnu.org
                CC: olegendo at gcc dot gnu.org
  Target Milestone: ---
            Target: sh*-*-*

On sh4-unknown-linux-gnu, gcc5/6 fails to compile libiberty/regex.c
with -O2 -fpic:

libiberty/regex.c: In function 'byte_re_match_2_internal':
libiberty/regex.c:7486:1: error: insn does not satisfy its constraints:
(insn 14303 10571 14304 388 (set (reg:SI 2 r2)
        (sign_extend:SI (mem:QI (plus:SI (reg/f:SI 6 r6 [orig:794 D.8765 ]
[794])
                    (const_int 5 [0x5])) [0 MEM[(unsigned char *)_1000 + 5B]+0
S1 A8]))) libiberty/regex.c:7109 232 {*extendqisi2_compact_mem_disp}
     (nil))
libiberty/regex.c:7486:1: internal compiler error: in extract_constrain_insn,
at recog.c:2232
0x86d443f _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../ORIG/trunk/gcc/rtl-error.c:110
0x86d4475 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
        ../../ORIG/trunk/gcc/rtl-error.c:121
0x86a0835 extract_constrain_insn(rtx_insn*)
        ../../ORIG/trunk/gcc/recog.c:2232
0x86a3b29 copyprop_hardreg_forward_1
        ../../ORIG/trunk/gcc/regcprop.c:788
0x86a4877 execute
        ../../ORIG/trunk/gcc/regcprop.c:1283

There is no problem with gcc-4.9.x.