do sign/zero extensions removal in copy.c

1 files changed, 0 insertions, 46 deletions

diff --git a/simpl.c b/simpl.c
deleted file mode 100644
index 384a8da..0000000
--- a/simpl.c
+++ /dev/null
@@ -1,46 +0,0 @@
-#include "all.h"
-
-static void
-elimext(Ins *i, int ext, Fn *fn)
-{
-	Tmp *t;
-	Use *u;
-
-	assert(rtype(i->to) == RTmp);
-	t = &fn->tmp[i->to.val];
-	for (u=t->use; u<&t->use[t->nuse]; u++)
-		if (u->type == UIns
-		&& u->u.ins->op == ext
-		&& (u->u.ins->cls == i->cls || i->cls == Kl)) {
-			u->u.ins->op = Ocopy;
-			elimext(u->u.ins, ext, fn);
-		}
-}
-
-/* requires & preserves uses */
-void
-simpl(Fn *fn)
-{
-	Blk *b;
-	Ins *i;
-	int ext;
-
-	for (b=fn->start; b; b=b->link)
-		for (i=b->ins; i<&b->ins[b->nins]; i++)
-			switch (i->op) {
-			case Oloadsb:
-			case Oloadub:
-			case Oloadsh:
-			case Oloaduh:
-				ext = Oextsb + (i->op - Oloadsb);
-				goto Elimext;
-			case Oextsb:
-			case Oextub:
-			case Oextsh:
-			case Oextuh:
-				ext = i->op;
-			Elimext:
-				elimext(i, ext, fn);
-				break;
-			}
-}