Add strip option in qjsc to reduce object size (#388)

- `-s` strips the source code
- `-ss` strips source and line/column numbers information
- `qjsc repl.js` generates an object size of **105726** bytes
- `qjsc -s repl.js` generates an object size of **20853** bytes
- `qjsc -ss repl.js` generates an object size of only **16147** bytes
- compile repl.js with `-ss`
- bump byte code version to 12

Author: chqrlie

Makefile

@@ -61,7 +61,7 @@ clean:
 	cmake --build $(BUILD_DIR) --target clean
 
 codegen: $(QJSC)
-	$(QJSC) -o gen/repl.c -m repl.js
+	$(QJSC) -ss -o gen/repl.c -m repl.js
 	$(QJSC) -e -o gen/function_source.c tests/function_source.js
 	$(QJSC) -e -o gen/hello.c examples/hello.js
 	$(QJSC) -e -o gen/hello_module.c -m examples/hello_module.js

gen/function_source.c

@@ -5,7 +5,7 @@
 const uint32_t qjsc_function_source_size = 384;
 
 const uint8_t qjsc_function_source[384] = {
- 0x0b, 0x06, 0x0c, 0x61, 0x63, 0x74, 0x75, 0x61,
+ 0x0c, 0x06, 0x0c, 0x61, 0x63, 0x74, 0x75, 0x61,
  0x6c, 0x02, 0x66, 0x30, 0x74, 0x65, 0x73, 0x74,
  0x73, 0x2f, 0x66, 0x75, 0x6e, 0x63, 0x74, 0x69,
  0x6f, 0x6e, 0x5f, 0x73, 0x6f, 0x75, 0x72, 0x63,
@@ -15,12 +15,12 @@ const uint8_t qjsc_function_source[384] = {
  0x75, 0x6e, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x20,
  0x66, 0x28, 0x29, 0x20, 0x7b, 0x20, 0x72, 0x65,
  0x74, 0x75, 0x72, 0x6e, 0x20, 0x34, 0x32, 0x20,
- 0x7d, 0x0c, 0x00, 0x02, 0x01, 0x9e, 0x01, 0x00,
+ 0x7d, 0x0c, 0x00, 0xfa, 0x01, 0x9e, 0x01, 0x00,
  0x06, 0x00, 0x03, 0x00, 0x01, 0xa0, 0x01, 0x06,
  0xa0, 0x01, 0x00, 0x00, 0x00, 0xb2, 0x03, 0x02,
  0x00, 0x30, 0xb4, 0x03, 0x04, 0x00, 0x70, 0xb2,
  0x03, 0x04, 0x03, 0x70, 0x10, 0x00, 0x01, 0x00,
- 0xe0, 0x01, 0x00, 0x01, 0x00, 0x0c, 0x43, 0x02,
+ 0xe0, 0x01, 0x00, 0x01, 0x00, 0x0c, 0x43, 0xfa,
  0x01, 0xb4, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00,
  0x00, 0x03, 0x00, 0xbb, 0x2a, 0x28, 0xb6, 0x03,
  0x03, 0x01, 0x04, 0x02, 0x1e, 0x0c, 0x0e, 0x1a,

gen/hello.c

@@ -5,12 +5,12 @@
 const uint32_t qjsc_hello_size = 89;
 
 const uint8_t qjsc_hello[89] = {
- 0x0b, 0x04, 0x0e, 0x63, 0x6f, 0x6e, 0x73, 0x6f,
+ 0x0c, 0x04, 0x0e, 0x63, 0x6f, 0x6e, 0x73, 0x6f,
  0x6c, 0x65, 0x06, 0x6c, 0x6f, 0x67, 0x16, 0x48,
  0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x57, 0x6f, 0x72,
  0x6c, 0x64, 0x22, 0x65, 0x78, 0x61, 0x6d, 0x70,
  0x6c, 0x65, 0x73, 0x2f, 0x68, 0x65, 0x6c, 0x6c,
- 0x6f, 0x2e, 0x6a, 0x73, 0x0c, 0x00, 0x02, 0x00,
+ 0x6f, 0x2e, 0x6a, 0x73, 0x0c, 0x00, 0xfa, 0x00,
  0x9e, 0x01, 0x00, 0x01, 0x00, 0x03, 0x00, 0x00,
  0x14, 0x01, 0xa0, 0x01, 0x00, 0x00, 0x00, 0x38,
  0xd9, 0x00, 0x00, 0x00, 0x42, 0xda, 0x00, 0x00,

gen/hello_module.c

@@ -5,14 +5,14 @@
 const uint32_t qjsc_fib_module_size = 310;
 
 const uint8_t qjsc_fib_module[310] = {
- 0x0b, 0x03, 0x2c, 0x65, 0x78, 0x61, 0x6d, 0x70,
+ 0x0c, 0x03, 0x2c, 0x65, 0x78, 0x61, 0x6d, 0x70,
  0x6c, 0x65, 0x73, 0x2f, 0x66, 0x69, 0x62, 0x5f,
  0x6d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x2e, 0x6a,
  0x73, 0x06, 0x66, 0x69, 0x62, 0x02, 0x6e, 0x0d,
  0xb2, 0x03, 0x00, 0x01, 0x00, 0x00, 0xb4, 0x03,
- 0x00, 0x00, 0x0c, 0x20, 0x02, 0x01, 0x9e, 0x01,
+ 0x00, 0x00, 0x0c, 0x20, 0xfa, 0x01, 0x9e, 0x01,
  0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x09, 0x00,
- 0xb4, 0x03, 0x00, 0x01, 0x0c, 0x43, 0x02, 0x01,
+ 0xb4, 0x03, 0x00, 0x01, 0x0c, 0x43, 0xfa, 0x01,
  0xb4, 0x03, 0x01, 0x00, 0x01, 0x04, 0x01, 0x00,
  0x1a, 0x01, 0xb6, 0x03, 0x00, 0x01, 0x00, 0xb4,
  0x03, 0x00, 0x00, 0xd0, 0xb3, 0xa7, 0xe9, 0x03,
@@ -49,7 +49,7 @@ const uint8_t qjsc_fib_module[310] = {
 const uint32_t qjsc_hello_module_size = 177;
 
 const uint8_t qjsc_hello_module[177] = {
- 0x0b, 0x07, 0x30, 0x65, 0x78, 0x61, 0x6d, 0x70,
+ 0x0c, 0x07, 0x30, 0x65, 0x78, 0x61, 0x6d, 0x70,
  0x6c, 0x65, 0x73, 0x2f, 0x68, 0x65, 0x6c, 0x6c,
  0x6f, 0x5f, 0x6d, 0x6f, 0x64, 0x75, 0x6c, 0x65,
  0x2e, 0x6a, 0x73, 0x1e, 0x2e, 0x2f, 0x66, 0x69,
@@ -60,7 +60,7 @@ const uint8_t qjsc_hello_module[177] = {
  0x6f, 0x20, 0x57, 0x6f, 0x72, 0x6c, 0x64, 0x10,
  0x66, 0x69, 0x62, 0x28, 0x31, 0x30, 0x29, 0x3d,
  0x0d, 0xb2, 0x03, 0x01, 0xb4, 0x03, 0x00, 0x00,
- 0x01, 0x00, 0xb6, 0x03, 0x00, 0x0c, 0x20, 0x02,
+ 0x01, 0x00, 0xb6, 0x03, 0x00, 0x0c, 0x20, 0xfa,
  0x01, 0x9e, 0x01, 0x00, 0x00, 0x00, 0x05, 0x01,
  0x00, 0x32, 0x00, 0xb6, 0x03, 0x00, 0x0c, 0x08,
  0xe9, 0x02, 0x29, 0x38, 0xdc, 0x00, 0x00, 0x00,