scc

commit 6a881572a84a4eb07b2089c66558cd1112213f4f
parent 0df9109d9a61da94d0db74c699d305334b4a0948
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Sat, 28 Dec 2024 12:40:18 +0100

cc2/qbe: Remove jump optimization

Qbe already handles this kind of optimizations, so it does not make
sense to have this code here.

Diffstat:
M
src/cmd/scc-cc/cc2/qbe/cgen.c
 | 
18
------------------

1 file changed, 0 insertions(+), 18 deletions(-)
diff --git a/src/cmd/scc-cc/cc2/qbe/cgen.c b/src/cmd/scc-cc/cc2/qbe/cgen.c
@@ -816,24 +816,6 @@ norm(Range *rp, Node *np)
 			sym->kind = SLABEL;
 			next->label = sym;
 		}
-	case OJMP:
-		for (;;) {
-			dst = np->u.sym->u.stmt;
-			if (dst->op != OJMP)
-				break;
-			np->u.sym = dst->u.sym;
-		}
-		for (p = np->next; p; p = p->next) {
-			if (p == dst)
-				return NULL;
-			if (p->op == ONOP ||
-			    p->op == OBLOOP ||
-			    p->op == OELOOP) {
-				continue;
-			}
-			break;
-		}
-		break;
 	}
 	return np;
 }