[llvm] 674f578 - [gardening] Replace some uses of setDebugLoc(DebugLoc()) with dropLocation(), NFC

[Jeremy Morse via llvm-commits]

Hi,

On Wed, Sep 30, 2020 at 7:26 AM Petr Hosek via llvm-commits
<llvm-commits at lists.llvm.org> wrote:
> We're seeing a segfault when compiling compiler-rt builtins that seems to have been introduced by this change:

We're seeing this too, reverted in http://reviews.llvm.org/rG05659606a2af7

I had a look at the call site in FoldBranchToCommonDest, it looks like
dropLocation is being called when the instruction is not yet inserted
into a block or function, causing calls to getParent() to return null.

--
Thanks,
Jeremy