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authorBjörn Gustavsson <[email protected]>2015-06-23 08:53:50 +0200
committerBjörn Gustavsson <[email protected]>2015-07-03 14:34:56 +0200
commit135c9821e8806defa455a47208fb897fff1a3ff8 (patch)
treefc6842ad4eb26930a2d6a1f1daeeb58e094ea7a5 /erts/emulator/beam/erl_bif_os.c
parentf0923b143ecfdacfe4873fc1e96c8ec69726a4d9 (diff)
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Make the 'r' operand type optional
The 'r' type is now mandatory. That means in order to handle both of the following instructions: move x(0) y(7) move x(1) y(7) we would need to define two specific operations in ops.tab: move r y move x y We want to make 'r' operands optional. That is, if we have only this specific instruction: move x y it will match both of the following instructions: move x(0) y(7) move x(1) y(7) Make 'r' optional allows us to save code space when we don't want to make handling of x(0) a special case, but we can still use 'r' to optimize commonly used instructions.
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