[Bug rtl-optimization/72821] New: [7 regression] RTL check: expected elt 2 type 'B', have '0' (rtx barrier) in BLOCK_FOR_INSN, at rtl.h:1424

[dimhen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72821

            Bug ID: 72821
           Summary: [7 regression] RTL check: expected elt 2 type 'B',
                    have '0' (rtx barrier) in BLOCK_FOR_INSN, at
                    rtl.h:1424
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dimhen at gmail dot com
  Target Milestone: ---

r239064 PASS
r239176 FAIL

Fedora24/x86_64

~/src/gcc_current/configure --enable-checking=rtl --disable-multilib

make

/home/dimhen/src/gcc_current/libgcc/libgcc2.c: In function '__lshrti3':
/home/dimhen/src/gcc_current/libgcc/libgcc2.c:426:1: internal compiler error:
RTL check: expected elt 2 type 'B', have '0' (rtx barrier) in BLOCK_FOR_INSN,
at rtl.h:1424
 }
 ^
0xe2f3b4 rtl_check_failed_type1(rtx_def const*, int, int, char const*, int,
char const*)
        /home/dimhen/src/gcc_current/gcc/rtl.c:792
0x8d3716 BLOCK_FOR_INSN(rtx_def*)
        /home/dimhen/src/gcc_current/gcc/rtl.h:1424
0xc940d4 regno_in_use_p
        /home/dimhen/src/gcc_current/gcc/lra-spills.c:701
0xc9484c lra_final_code_change()
        /home/dimhen/src/gcc_current/gcc/lra-spills.c:769
0xc5a2da lra(_IO_FILE*)
        /home/dimhen/src/gcc_current/gcc/lra.c:2482
0xbf1424 do_reload
        /home/dimhen/src/gcc_current/gcc/ira.c:5384
0xbf1884 execute
        /home/dimhen/src/gcc_current/gcc/ira.c:5568
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