[Bug ipa/122956] [16 regression] ICE caused by r16-4000 when building LLVM14 with -Ofast -flto=auto

[liuhongt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122956

--- Comment #17 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
Reduced to 6.o files

g++ -std=c++17   -m64      -g -march=native -Ofast -flto=auto -mfpmath=sse -g  
  -flifetime-dse=1   -pthread    lib/Support/CommandLine.o lib/IR/Pass.o 
lib/IR/PassRegistry.o lib/Analysis/Analysis.o lib/Analysis/DemandedBits.o
tools/opt/opt.o                  -o llvm-opt_r

Start creduce.