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    04ea3f83
    compiler: use -O3 as LLVM optimization level for ghc -O2 · 04ea3f83
    Cheng Shao authored and Marge Bot's avatar Marge Bot committed 
    The GHC driver clamps LLVM optimization level to `-O2` due to LLVM
crashes, but those were historical issues many years ago that are no
longer relevant for LLVM versions we support today. This patch changes
the driver to use `-O3` as LLVM optimization level when compiling with
`-O2`, which is a better default when we're willing to trade
compilation time for faster generated code.
    04ea3f83
    compiler: use -O3 as LLVM optimization level for ghc -O2
    Cheng Shao authored and Marge Bot's avatar Marge Bot committed 
    The GHC driver clamps LLVM optimization level to `-O2` due to LLVM
crashes, but those were historical issues many years ago that are no
longer relevant for LLVM versions we support today. This patch changes
the driver to use `-O3` as LLVM optimization level when compiling with
`-O2`, which is a better default when we're willing to trade
compilation time for faster generated code.