Fixes for SSACompiler's optimization for ifNil: and ifNotNil:. Benchmarks indicate marginal but measurable improvement.
Fixes for SSACompiler's optimization for ifNil: and ifNotNil:. Benchmarks indicate marginal but measurable improvement.

briantrice/slate-language,krfkeith/slate-language,krfkeith/slate-language,krfkeith/slate-language,briantrice/slate-language,krfkeith/slate-language,briantrice/slate-language,briantrice/slate-language,krfkeith/slate-language,krfkeith/slate-language,briantrice/slate-language,briantrice/slate-language