style: modernize to splitseq, cut, min, maps.copy and range-over-int

asm/link.go

@@ -488,7 +488,7 @@ func collectData(f *ast.File) ([]dataSym, error) {
 			if dd.Value.Imm.Neg {
 				v = -v
 			}
-			for j := 0; j < w; j++ {
+			for j := range w {
 				buf[off+int64(j)] = byte(v >> (8 * j))
 			}
 		}