[M3commit] CVS Update: cm3

[Jay K]

attached

 

btw, other than the commit mail, the changelog should have a clickable link.

 
> Date: Mon, 1 Mar 2010 13:54:37 +0000
> To: m3commit at elegosoft.com
> From: jkrell at elego.de
> Subject: [M3commit] CVS Update: cm3
> 
> CVSROOT: /usr/cvs
> Changes by: jkrell at birch. 10/03/01 13:54:37
> 
> Modified files:
> cm3/m3-sys/m3back/src/: Codex86.m3 
> 
> Log message:
> work in progress to inline all 64bit shifts (and then rotates)
> the 64bit shift code in particular in the AMD manual is around 6 instruction
> 
> however before we do that:
> 
> teach unOp about double shift (aka shift by ecx)
> not yet used, as these cases still call functions
> 
> split up the double ops into separate functions for readability:
> not_double, add_double, add_double_immediate, etc.
> (not, negate, add, subtract, compare, immediate and not; bigger
> things like multiply/divide generate function calls at a higher level, currently;
> given that our complicated single precision divide was inlined, probably will
> inline that for double, probably multiple too; while the result is bloated,
> I like the idea of reducing hand.c, and longint use on 32bit targets
> maybe ok to bloat?)
> 
> also goal to have less duplication of the various logic such
> as left vs. right vs. "signed" shift, the compares to 32, 64, etc.
> at least move the code into fewer functions
> 
> also stretch goal is to alter/eliminate the binop/binop1/binopWithShiftCount split
> into something that seems less hoky. Part of the issue is that
> other than oNOT, and separate functions like swapOp, movOp, nothing is really
> "just loop over the parts"
> 
 		 	   		  
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