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authorMagnus Lång <[email protected]>2016-10-02 13:23:52 +0200
committerMagnus Lång <[email protected]>2016-11-16 17:20:32 +0100
commitfda8d7909594d434c01fdc9610127d09d1499a43 (patch)
tree458b7ad7d08e8bfbe836810df877470415ceddbb /lib/hipe/x86/hipe_x86_postpass.erl
parent921638f8b22479473482bdcaa25f8031ac85e7e8 (diff)
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hipe_tagscheme: Improve fixnum add on x86
With the introduction of immediate adds encoded as 'LEA' on x86, it is now possible to do a fixnum add in two instructions and one branch by commuting the addition and reusing the result register as a temporary, which makes the 'alub' a 2-address add, saving a move instruction.
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