Annotation of /sml/trunk/src/MLRISC/emit/cfgEmit.sml

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1 :	george	934	(* cfgEmit.sml
2 :			*
3 :			* COPYRIGHT (c) 2001 Bell Labs, Lucent Technologies
4 :			*
5 :			* This module takes a flowgraph and an assembly emitter module and
6 :			* ties them together into one. The output is sent to AsmStream.
7 :			* --Allen
8 :			*)
9 :
10 :			functor CFGEmit
11 :			(structure CFG : CONTROL_FLOW_GRAPH
12 :			structure E : INSTRUCTION_EMITTER
13 :			where I = CFG.I and P = CFG.P) : ASSEMBLY_EMITTER =
14 :			struct
15 :
16 :			structure CFG = CFG
17 :
18 :			fun asmEmit (Graph.GRAPH graph, blocks) = let
19 :			val CFG.INFO{annotations=an, ...} = #graph_info graph
20 :			val E.S.STREAM{pseudoOp,defineLabel,emit,annotation,comment,...} =
21 :			E.makeStream (!an)
22 :			fun emitAn a = if Annotations.toString a = "" then () else annotation(a)
23 :			fun emitData (CFG.LABEL lab) = defineLabel lab
24 :			| emitData (CFG.PSEUDO pOp) = pseudoOp pOp
25 :			fun emitIt (id, CFG.BLOCK{data, labels, annotations=a, insns, ...}) = (
26 :			List.app emitData (!data);
27 :			(* List.app defineLabel (!labels); *) (* JHR *)
28 :			List.app emitAn (!a);
29 :			List.app emit (rev (!insns)))
30 :			in
31 :			List.app emitAn (!an);
32 :			List.app emitIt blocks
33 :			end
34 :			end
35 :

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