12.8 切片 3：NOT 与短路 AND/OR（编跳转）。

- 短路模式：<lhs→rd> JF(AND)/JT(OR) rd, L_end <rhs→t> MOVE rd, t L_end:
- patch_jump 回填偏移；约定相对下一条指令（目标 = 当前 + 1 + off），冻结进 isa 规格
- codegen_test：71 断言（用例 03 跳转序列 JF/JT +2、NOT 序列），ctest 9/9

tests/src/codegen_test.cpp

@@ -279,6 +279,74 @@ static bool test_write_input() {
     return true;
 }
 
+// ---- 7. 用例 03：短路 AND / OR 必须编跳转 ----
+
+static bool test_case03() {
+    std::vector<uint8_t> img;
+    std::string err;
+    CHECK(compile_case("03_short_circuit", &img, &err));
+
+    const isa::ImageView v = isa::ImageView::from(img);
+    CHECK(v.ok());
+    const isa::FuncRow r = v.func_row(0);
+    CHECK(r.nregs == 4);  // a b x + 1 临时
+    CHECK(r.code_len == 9);
+
+    char buf[64];
+    const uint8_t* base = v.code_bytes();
+    const uint32_t* ins = reinterpret_cast<const uint32_t*>(base);
+    // x := a AND b：MOVE r2,r0 / JF r2,+2 / MOVE r3,r1 / MOVE r2,r3
+    isa::disasm(ins[0], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "MOVE r2, r0") == 0);
+    isa::disasm(ins[1], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "JF r2, +2") == 0);
+    isa::disasm(ins[2], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "MOVE r3, r1") == 0);
+    isa::disasm(ins[3], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "MOVE r2, r3") == 0);
+    // x := a OR b：MOVE r2,r0 / JT r2,+2 / MOVE r3,r1 / MOVE r2,r3
+    isa::disasm(ins[4], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "MOVE r2, r0") == 0);
+    isa::disasm(ins[5], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "JT r2, +2") == 0);
+    isa::disasm(ins[6], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "MOVE r3, r1") == 0);
+    isa::disasm(ins[7], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "MOVE r2, r3") == 0);
+    isa::disasm(ins[8], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "RET") == 0);
+    return true;
+}
+
+// ---- 8. NOT ----
+
+static bool test_not() {
+    std::vector<uint8_t> img;
+    std::string err;
+    const char* main_st =
+        "PROGRAM MAIN\nVAR\n    a, x : BOOL;\nEND_VAR\n"
+        "    x := NOT a;\n"
+        "END_PROGRAM\n";
+    CHECK(compile_src("not", "", "", main_st, &img, &err));
+
+    const isa::ImageView v = isa::ImageView::from(img);
+    CHECK(v.ok());
+    const isa::FuncRow r = v.func_row(0);
+    CHECK(r.nregs == 3);  // a x + 1 临时
+    CHECK(r.code_len == 3);
+
+    char buf[64];
+    const uint8_t* base = v.code_bytes();
+    const uint32_t* ins = reinterpret_cast<const uint32_t*>(base);
+    isa::disasm(ins[0], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "MOVE r2, r0") == 0);  // 临时 ← a
+    isa::disasm(ins[1], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "NOT r1, r2") == 0);   // x := NOT 临时
+    isa::disasm(ins[2], buf, sizeof buf);
+    CHECK(std::strcmp(buf, "RET") == 0);
+    return true;
+}
+
 int main() {
     if (!test_case01()) return 1;
     if (!test_case02()) return 1;
@@ -286,6 +354,8 @@ int main() {
     if (!test_io_ops()) return 1;
     if (!test_layout()) return 1;
     if (!test_write_input()) return 1;
+    if (!test_case03()) return 1;
+    if (!test_not()) return 1;
     std::printf("codegen_test: %d checks passed\n", g_checks);
     return 0;
 }