[Bug c/84741] New: [7/8 Regression] ICE in ix86_expand_prologue, at config/i386/i386.c:13893

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84741

            Bug ID: 84741
           Summary: [7/8 Regression] ICE in ix86_expand_prologue, at
                    config/i386/i386.c:13893
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Starts to ICE from 20170129 on with option -fstack-usage.
File gcc/testsuite/gcc.dg/rtl/x86_64/test-return-const.c.after-expand.c


$ gcc-8-20180304 -c test-return-const.c.after-expand.c
$ gcc-8-20180304 -c test-return-const.c.after-expand.c -fstack-usage
during RTL pass: pro_and_epilogue
test-return-const.c.after-expand.c: In function 'test_returning_constant':
test-return-const.c.after-expand.c:32:1: internal compiler error: Segmentation
fault
 }
 ^
0xaed10f crash_signal
        ../../gcc/toplev.c:325
0xda329c ix86_expand_prologue()
        ../../gcc/config/i386/i386.c:13893
0xfc4cda gen_prologue()
        ../../gcc/config/i386/i386.md:13183
0xd8f588 target_gen_prologue
        ../../gcc/config/i386/i386.md:19561
0x88f139 make_prologue_seq
        ../../gcc/function.c:5926
0x88f352 thread_prologue_and_epilogue_insns()
        ../../gcc/function.c:6043
0x88f9f2 rest_of_handle_thread_prologue_and_epilogue
        ../../gcc/function.c:6534
0x88f9f2 execute
        ../../gcc/function.c:6576