[Bug target/101041] z13: Inefficient handling of vector register passed to function

[stefansf at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101041

Stefan Schulze Frielinghaus <stefansf at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID
                 CC|                            |stefansf at gcc dot gnu.org

--- Comment #1 from Stefan Schulze Frielinghaus <stefansf at gcc dot gnu.org> 
---
Using gcc 8.5 with options -O2 -march=z13 -mzvector I get

mul64:
.LFB1:
        .cfi_startproc
        vlgvg   %r2,%v24,0
        vlgvg   %r3,%v26,0
        vlgvg   %r1,%v24,1
        msgr    %r3,%r2
        vlgvg   %r2,%v26,1
        msgr    %r1,%r2
        vlvgp   %v24,%r3,%r1
        br      %r14

I assume that in the initial report an unoptimized build (-O0) was done for
which the emitted code looks ok.