merge add

qbe_emit.cm

@@ -277,6 +277,51 @@ var qbe_emit = function(ir, qbe) {
         continue
       }
 
+      // --- Generic arithmetic (VM dispatches int/float) ---
+
+      if (op == "add") {
+        p = fresh()
+        emit(qbe.add(p, "%ctx", s(a2), s(a3)))
+        emit(`  ${s(a1)} =l copy %${p}`)
+        wb(a1)
+        continue
+      }
+      if (op == "subtract") {
+        p = fresh()
+        emit(qbe.sub(p, "%ctx", s(a2), s(a3)))
+        emit(`  ${s(a1)} =l copy %${p}`)
+        wb(a1)
+        continue
+      }
+      if (op == "multiply") {
+        p = fresh()
+        emit(qbe.mul(p, "%ctx", s(a2), s(a3)))
+        emit(`  ${s(a1)} =l copy %${p}`)
+        wb(a1)
+        continue
+      }
+      if (op == "divide") {
+        p = fresh()
+        emit(qbe.div(p, "%ctx", s(a2), s(a3)))
+        emit(`  ${s(a1)} =l copy %${p}`)
+        wb(a1)
+        continue
+      }
+      if (op == "modulo") {
+        p = fresh()
+        emit(qbe.mod(p, "%ctx", s(a2), s(a3)))
+        emit(`  ${s(a1)} =l copy %${p}`)
+        wb(a1)
+        continue
+      }
+      if (op == "negate") {
+        p = fresh()
+        emit(qbe.neg(p, "%ctx", s(a2)))
+        emit(`  ${s(a1)} =l copy %${p}`)
+        wb(a1)
+        continue
+      }
+
       // --- String concat ---
 
       if (op == "concat") {