[Bug target/83946] New: [7/8 Regression] Safe Indirect Jumps broken on AIX

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83946

            Bug ID: 83946
           Summary: [7/8 Regression] Safe Indirect Jumps broken on AIX
           Product: gcc
           Version: 7.2.1
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dje at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org, rguenth at gcc dot gnu.org,
                    segher at gcc dot gnu.org, wschmidt at gcc dot gnu.org
  Target Milestone: ---
            Target: powerpc-ibm-aix*

The patches to inhibit speculation for powerpc are incorrect for AIX. Some of
the MD file changes use

b .

which is illegal syntax on AIX.  AIX requires "$" for the current position. 
This patch also was backported to GCC 7 branch, which means that the GCC 7.3.0
RC1 is broken.