[llvm] r359426 - [DebugInfo] Terminate more location-list ranges at the end of blocks

[Eric Christopher via llvm-commits]

On Wed, May 8, 2019 at 4:39 PM Eric Christopher <echristo at gmail.com> wrote:
>
> On Wed, May 8, 2019 at 4:38 PM Adrian Prantl <aprantl at apple.com> wrote:
> >
> >
> >
> > > On May 8, 2019, at 4:31 PM, Eric Christopher <echristo at gmail.com> wrote:
> > >
> > > This is really going to scale poorly - it might just be showing
> > > algorithmic problems later in the pipeline, but the amount of extra
> > > work this causes is going to be huge.
> > >
> > > We should definitely back this out for now and come up with some other
> > > thoughts on how to approach this.
> >
> > Sure thing! I understand it may be difficult to share a reproducer, but if you can share any details about what passes blow up (or perhaps even share a sample/profile of clang) that would be useful for the redesign.
> >
>
> Absolutely. Jordan's working on it now. :)

Done thusly:

echristo at athyra ~/r/llvm-project> git llvm push
Pushing 1 commit:
  4efc39ba75a Temporarily Revert "[DebugInfo] Terminate more
location-list ranges at the end of blocks" as it was causing
significant compile time regressions.
Sending        llvm/trunk/lib/CodeGen/AsmPrinter/DbgEntityHistoryCalculator.cpp
Sending        llvm/trunk/lib/CodeGen/LiveDebugValues.cpp
Sending        llvm/trunk/test/DebugInfo/COFF/pieces.ll
Sending        llvm/trunk/test/DebugInfo/MIR/AArch64/implicit-def-dead-scope.mir
Sending        llvm/trunk/test/DebugInfo/X86/fission-ranges.ll
Deleting       llvm/trunk/test/DebugInfo/X86/live-debug-values-constprop.mir
Transmitting file data .....done
Committing transaction...
Committed revision 360301.
Committed 4efc39ba75a to svn.

Sorry for the inconvenience!

-eric