[Bug target/83707] New: memcmp inline expansion causing g++.dg/eh/simd-3.C to fail on power7 -m32

[acsawdey at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83707

            Bug ID: 83707
           Summary: memcmp inline expansion causing g++.dg/eh/simd-3.C to
                    fail on power7 -m32
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: acsawdey at gcc dot gnu.org
          Reporter: acsawdey at gcc dot gnu.org
  Target Milestone: ---
            Target: ppc32 power7

This is apparently due to the inline expansion code that went into gcc7.
Haven't looked into what is going on yet but hopefully an easy fix.

Code looks like this:

.L8:
        bl abort
.L6:
        bl __cxa_begin_catch
        bl __cxa_end_catch
        lis 9,.LANCHOR0@ha
        la 9,.LANCHOR0@l(9)
        li 10,512
        stxvw4x 63,9,10
        addi 7,9,512
        lis 6,.LANCHOR1@ha
        la 8,.LANCHOR1@l(6)
        lwz 10,512(9)
        lwz 9,.LANCHOR1@l(6)
        subfc. 9,9,10
        bne 0,.L7
        lwz 10,4(7)
        lwz 9,4(8)
        subfc. 9,9,10
        bne 0,.L7
        lwz 10,8(7)
        lwz 9,8(8)
        subfc. 9,9,10
        bne 0,.L7
        lwz 10,12(7)
        lwz 9,12(8)
        subfc 9,9,10
.L7:
        subfe 10,10,10
        popcntw 9,9
        or. 9,9,10
        bne 0,.L8