shithub: mc

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Elide floating point moves.

--- a/6/isel.c

+++ b/6/isel.c

@@ -807,6 +807,11 @@

                 }

             }

             break;

+        case Imovs:

+            /* moving a reg to itself is dumb. */

+            if (insn->args[0]->reg.colour == insn->args[1]->reg.colour)

+                return;

+            break;

         case Imov:

             assert(!isfloatmode(insn->args[1]->mode));

             if (insn->args[0]->type != Locreg || insn->args[1]->type != Locreg)