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authorBjörn Gustavsson <[email protected]>2013-11-26 09:32:44 +0100
committerBjörn Gustavsson <[email protected]>2014-01-20 12:22:42 +0100
commit48360023d2f5ae72df19f0095da55738f63800db (patch)
treedc8f7bf17ced4d9b2aebdfa505badcbce5645ad8 /xcomp/erl-xcomp-TileraMDE2.0-tilepro.conf
parent912b330733144ae37e7a4da1bfea5be2a46d7594 (diff)
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asn1ct_imm: Add the {set,{var,Src},{var,Dst}} instruction
The {assign,Dst,Src} instruction is difficult to cope with when doing advanced optimizations, since its source argument is a string which may contain any expression. Instead of changing how {assign,_,_} works, we will introduce new instructions that can be used instead of {assign,_}, and remove {assign,_,_} in a later commit when it is no longer used. The first new instruction we will introduce is: {set,{var,Src},{var,Dst}} It is useful for common sub-expression elemination among other things. For the moment, we will only allow a variable as a source argument, but we could extend it in the future to allow constants as well.
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