LLVM breaks buildworld

[Steve Kargl]

On Thu, Sep 27, 2018 at 12:39:07PM -0700, Steve Kargl wrote:
> On Thu, Sep 27, 2018 at 12:34:39PM -0700, Steve Kargl wrote:
> > cd /usr/obj
> > rm -f usr
> > cd /usr/src
> > svn update
> > make buildworld
> > (wait a long time)
> > 
> > ===> lib/clang/libllvm (all)
> > llvm-tblgen -gen-asm-matcher  -I /usr/src/contrib/llvm/include -I /usr/src/contrib/llvm/lib/Target/Mips  -d MipsGenAsmMatcher.inc.d -o MipsGenAsmMatcher.inc  /usr/src/contrib/llvm/lib/Target/Mips/Mips.td
> > Included from /usr/src/contrib/llvm/lib/Target/Mips/Mips.td:57:
> > Included from /usr/src/contrib/llvm/lib/Target/Mips/MipsInstrInfo.td:3010:
> > /usr/src/contrib/llvm/lib/Target/Mips/MipsDSPInstrInfo.td:1142:25: error: Couldn't find class 'SHRD_QB_ENC'
> > def SHRL_QB : DspMMRel, SHRD_QB_ENC, SHRL_QB_DESC;
> >                         ^
> 
> % find /usr/src/contrib/llvm -type f | xargs grep SHRD_QB                                                                                                                                                                     
> /usr/src/contrib/llvm/lib/Target/Mips/MipsDSPInstrInfo.td:def SHRL_QB : DspMMRel, SHRD_QB_ENC, SHRL_QB_DESC;
> 
> 
> This is only place under llvm that SHRD_QB appears?
> 

Hmmm, deleting the file MipsDSPInstrInfo.td seems to flip
SHRD to SHRL. Oddly, 'svn diff' did not show a diff with
the corrupt file. :(.

-- 
Steve