[Bug target/65593] New: [5 Regression] internal compiler error: in extract_insn, at recog.c:2343

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65593

            Bug ID: 65593
           Summary: [5 Regression] internal compiler error: in
                    extract_insn, at recog.c:2343
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com

On Linux/x86-64, r221697 gave:

[hjl@gnu-35 gcc-test-spec]$ ./usr/bin/gcc -S -fPIE -O2 -o /tmp/x.s
src-trunk/gcc/testsuite/gcc.c-torture/compile/pr20928.c
src-trunk/gcc/testsuite/gcc.c-torture/compile/pr20928.c: In function
\u2018foo\u2019:
src-trunk/gcc/testsuite/gcc.c-torture/compile/pr20928.c:10:1: error:
unrecognizable insn:
 }
 ^
(insn 7 6 8 2 (set (reg/f:DI 88)
        (plus:DI (symbol_ref:DI ("bar") [flags 0x40] <var_decl 0x7ffff0dfac60
bar>)
            (reg:DI 89)))
src-trunk/gcc/testsuite/gcc.c-torture/compile/pr20928.c:8 -1
     (expr_list:REG_EQUAL (const:DI (plus:DI (symbol_ref:DI ("bar") [flags
0x40] <var_decl 0x7ffff0dfac60 bar>)
                (const_int 2147483648 [0x80000000])))
        (nil)))
src-trunk/gcc/testsuite/gcc.c-torture/compile/pr20928.c:10:1: internal compiler
error: in extract_insn, at recog.c:2343
0xa9a2c8 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
    ../../src-trunk/gcc/rtl-error.c:110
0xa9a2f9 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
    ../../src-trunk/gcc/rtl-error.c:118
0xa68659 extract_insn(rtx_insn*)
    ../../src-trunk/gcc/recog.c:2343
0x86d1f3 instantiate_virtual_regs_in_insn
    ../../src-trunk/gcc/function.c:1598
0x86d1f3 instantiate_virtual_regs
    ../../src-trunk/gcc/function.c:1966
0x86d1f3 execute
    ../../src-trunk/gcc/function.c:2015
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[hjl@gnu-35 gcc-test-spec]$