JIT: fix USHR, optimize SHR, AND, OR, XOR#177
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1) USHR(-1, -1) wrongly produced -1; 2) The "best_int" check is redundant for all bitwise ops except SHL; 3) SHR, USHR, AND, OR, XOR performed unnecessary tag bit juggling.
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Hmm, this looks pretty good actually for the USHR change... but I'm not brave enough to merge it. Will let it sit open for now. |
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Just an anecdote: I've been using this code in production for 5+ years, with zero problems. |
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best_intcheck is redundant for all bitwise ops except SHL;