Re: graph coloring (Mohd Hanafiah Abdullah)
25 Mar 1996 21:58:28 -0500

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From: (Mohd Hanafiah Abdullah)
Newsgroups: comp.compilers
Date: 25 Mar 1996 21:58:28 -0500
Organization: Malaysian Inst of Microelectronic Systems
References: 96-03-124
Keywords: optimize

Ramesh B S <> wrote:
>Are there any standard compilers that use any of the graph coloring
>techniques (like live range analysis, hierarchical coloring etc) to do
>register allocation?

My C compiler is based on Chow and Henessy's Priority Based Graph
Coloring scheme. It uses heuristics to sidestep the NP-complete
problem of coloring, and it also does not spill registers. I'm sure
there are numerous compilers out there that use the same method :-)


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