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Add in pseudo-regs.

--- a/8/asm.h

+++ b/8/asm.h

@@ -15,6 +15,7 @@

 typedef enum {

     Loclbl,

+    Locpseudo,

     Locreg,

     Locmem,

     Locmeml, /* label offset */

@@ -38,6 +39,7 @@

         char *lbl;

         Reg   reg;

         long  lit;

+        long  pseudo;

         /* disp(base + index) */

         struct {

             /* only one of lbldisp and constdisp may be used */

--- a/8/isel.c

+++ b/8/isel.c

@@ -55,6 +55,16 @@

     return l;

 }

+Loc *locpseudo(Loc *l, Mode mode)

+{

+    static long nextpseudo;

+

+    l->type = Locpseudo;

+    l->mode = mode;

+    l->pseudo = nextpseudo++;

+    return l;

+}

+

 Loc *locmem(Loc *l, long disp, Reg base, Reg idx, Mode mode)

 {

     l->type = Locmem;

@@ -260,6 +270,9 @@

         case Locreg:

             fprintf(fd, "%s", regnames[l->reg]);

             break;

+        case Locpseudo:

+            fprintf(fd, "%%P%ld", l->pseudo);

+            break;

         case Locmem:

         case Locmeml:

             if (l->type == Locmem) {

@@ -275,7 +288,6 @@

                 fprintf(fd, ",%s", regnames[l->mem.idx]);

             if (l->mem.base)

                 fprintf(fd, ")");

-            break;

             break;

         case Loclit:

             break;