[Bug rtl-optimization/54127] New: [4.7] ICE in maybe_record_trace_start with asm goto, --target=powerpc-unknown-linux-gnu

["simonb at google dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54127

             Bug #: 54127
           Summary: [4.7] ICE in maybe_record_trace_start with asm goto,
                    --target=powerpc-unknown-linux-gnu
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: simonb@google.com


gcc.dg/torture/pr53589.c fails in gcc-4_7-branch at r189949 with
--target=powerpc-unknown-linux-gnu.  I haven't yet checked 4.8.

Repro, using a cross-gcc hosted on x86_64:

  configure \
  --enable-languages=c \
  --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu \
  --target=powerpc-unknown-linux-gnu

  make -j6 all-gcc
  make RUNTESTFLAGS='dg-torture.exp=pr53589.c' check-gcc

...
FAIL: gcc.dg/torture/pr53589.c  -O3 -g  (internal compiler error)
...
.../gcc/testsuite/gcc.dg/torture/pr53589.c: In function 'bar':
.../gcc/testsuite/gcc.dg/torture/pr53589.c:15:1: internal compiler error: in
maybe_record_trace_start, at dwarf2cfi.c:2197