'+sse42' is not a recognized feature for this target
% ghc-9.10.1 -O -S -msse4.2 -fllvm Foo.hs
'+sse42' is not a recognized feature for this target (ignoring feature)
'+sse42' is not a recognized feature for this target (ignoring feature)
With
% llc --version
Ubuntu LLVM version 15.0.7
Optimized build.
Default target: x86_64-pc-linux-gnu
Host CPU: znver1
% opt --version
Ubuntu LLVM version 15.0.7
Optimized build.
Default target: x86_64-pc-linux-gnu
Host CPU: znver1