[Bug target/100041] ICE in curr_insn_transform, at lra-constraints.c:4022

[mss at tutanota dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100041

--- Comment #21 from mss at tutanota dot de ---
(In reply to Jakub Jelinek from comment #19)
> I'm worried that there isn't enough time to find out before GCC11 release if
> some packages in the wild aren't using that option.
> E.g. I wonder where it comes from in this PR.  Clearly it doesn't come from
> gcc, so does it come from LLVM makefiles or has the reporter just added it?

I was trying to build an LLVM for one of my machines from a much more powerful
machine and wanted to add the flags that `-march=native' enables for that
processor but I was unaware that `-m128bit-long-double' was enabled by default
already.

I accidentally added `-m96bit-long-double' myself instead of
`-m128bit-long-double', running g++ with both `-m64' and `-m96bit-long-double'
caused the ICE.