shithub: scc

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Remove dirty field of Node in cc2

This field is only updated when the variable is spilled to
memory, so it is a non sense.

--- a/cc2/cc2.h

+++ b/cc2/cc2.h

@@ -56,7 +56,6 @@

 	char kind;

 	bool public : 1;

 	bool extrn : 1;

-	bool dirty : 1;

 	bool index : 1;

 	union {

 		/* TODO: Admit inmediate of other type */

--- a/cc2/cgen.c

+++ b/cc2/cgen.c

@@ -126,7 +126,6 @@

 		if (sym) {

 			code(LDL, np, r);

 			np->op = sym->kind;

-			sym->dirty = 0;

 		} else {

 			new = allocreg(1);

 			moveto(np, new);

@@ -338,8 +337,6 @@

 		abort();

 	}

-	if (sym)

-		sym->dirty = 0;

 	np->op = REG;

 	np->reg = rp->reg;

 }