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
This commit is contained in:
Charlie Gordon
GitHub
parent
43dc65d605
commit
f326a7a195
9 changed files with 1362 additions and 12529 deletions
2
Makefile
2
Makefile
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@ -61,7 +61,7 @@ clean:
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cmake --build $(BUILD_DIR) --target clean
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codegen: $(QJSC)
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$(QJSC) -o gen/repl.c -m repl.js
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$(QJSC) -ss -o gen/repl.c -m repl.js
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$(QJSC) -e -o gen/function_source.c tests/function_source.js
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$(QJSC) -e -o gen/hello.c examples/hello.js
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$(QJSC) -e -o gen/hello_module.c -m examples/hello_module.js
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@ -5,7 +5,7 @@
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const uint32_t qjsc_function_source_size = 384;
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const uint8_t qjsc_function_source[384] = {
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0x0b, 0x06, 0x0c, 0x61, 0x63, 0x74, 0x75, 0x61,
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0x0c, 0x06, 0x0c, 0x61, 0x63, 0x74, 0x75, 0x61,
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0x6c, 0x02, 0x66, 0x30, 0x74, 0x65, 0x73, 0x74,
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0x73, 0x2f, 0x66, 0x75, 0x6e, 0x63, 0x74, 0x69,
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0x6f, 0x6e, 0x5f, 0x73, 0x6f, 0x75, 0x72, 0x63,
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@ -15,12 +15,12 @@ const uint8_t qjsc_function_source[384] = {
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0x75, 0x6e, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x20,
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0x66, 0x28, 0x29, 0x20, 0x7b, 0x20, 0x72, 0x65,
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0x74, 0x75, 0x72, 0x6e, 0x20, 0x34, 0x32, 0x20,
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0x7d, 0x0c, 0x00, 0x02, 0x01, 0x9e, 0x01, 0x00,
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0x7d, 0x0c, 0x00, 0xfa, 0x01, 0x9e, 0x01, 0x00,
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0x06, 0x00, 0x03, 0x00, 0x01, 0xa0, 0x01, 0x06,
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0xa0, 0x01, 0x00, 0x00, 0x00, 0xb2, 0x03, 0x02,
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0x00, 0x30, 0xb4, 0x03, 0x04, 0x00, 0x70, 0xb2,
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0x03, 0x04, 0x03, 0x70, 0x10, 0x00, 0x01, 0x00,
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0xe0, 0x01, 0x00, 0x01, 0x00, 0x0c, 0x43, 0x02,
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0xe0, 0x01, 0x00, 0x01, 0x00, 0x0c, 0x43, 0xfa,
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0x01, 0xb4, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00,
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0x00, 0x03, 0x00, 0xbb, 0x2a, 0x28, 0xb6, 0x03,
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0x03, 0x01, 0x04, 0x02, 0x1e, 0x0c, 0x0e, 0x1a,
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@ -5,12 +5,12 @@
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const uint32_t qjsc_hello_size = 89;
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const uint8_t qjsc_hello[89] = {
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0x0b, 0x04, 0x0e, 0x63, 0x6f, 0x6e, 0x73, 0x6f,
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0x0c, 0x04, 0x0e, 0x63, 0x6f, 0x6e, 0x73, 0x6f,
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0x6c, 0x65, 0x06, 0x6c, 0x6f, 0x67, 0x16, 0x48,
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0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x57, 0x6f, 0x72,
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0x6c, 0x64, 0x22, 0x65, 0x78, 0x61, 0x6d, 0x70,
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0x6c, 0x65, 0x73, 0x2f, 0x68, 0x65, 0x6c, 0x6c,
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0x6f, 0x2e, 0x6a, 0x73, 0x0c, 0x00, 0x02, 0x00,
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0x6f, 0x2e, 0x6a, 0x73, 0x0c, 0x00, 0xfa, 0x00,
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0x9e, 0x01, 0x00, 0x01, 0x00, 0x03, 0x00, 0x00,
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0x14, 0x01, 0xa0, 0x01, 0x00, 0x00, 0x00, 0x38,
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0xd9, 0x00, 0x00, 0x00, 0x42, 0xda, 0x00, 0x00,
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@ -5,14 +5,14 @@
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const uint32_t qjsc_fib_module_size = 310;
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const uint8_t qjsc_fib_module[310] = {
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0x0b, 0x03, 0x2c, 0x65, 0x78, 0x61, 0x6d, 0x70,
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0x0c, 0x03, 0x2c, 0x65, 0x78, 0x61, 0x6d, 0x70,
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0x6c, 0x65, 0x73, 0x2f, 0x66, 0x69, 0x62, 0x5f,
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0x6d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x2e, 0x6a,
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0x73, 0x06, 0x66, 0x69, 0x62, 0x02, 0x6e, 0x0d,
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0xb2, 0x03, 0x00, 0x01, 0x00, 0x00, 0xb4, 0x03,
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0x00, 0x00, 0x0c, 0x20, 0x02, 0x01, 0x9e, 0x01,
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0x00, 0x00, 0x0c, 0x20, 0xfa, 0x01, 0x9e, 0x01,
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0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x09, 0x00,
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0xb4, 0x03, 0x00, 0x01, 0x0c, 0x43, 0x02, 0x01,
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0xb4, 0x03, 0x00, 0x01, 0x0c, 0x43, 0xfa, 0x01,
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0xb4, 0x03, 0x01, 0x00, 0x01, 0x04, 0x01, 0x00,
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0x1a, 0x01, 0xb6, 0x03, 0x00, 0x01, 0x00, 0xb4,
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0x03, 0x00, 0x00, 0xd0, 0xb3, 0xa7, 0xe9, 0x03,
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@ -49,7 +49,7 @@ const uint8_t qjsc_fib_module[310] = {
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const uint32_t qjsc_hello_module_size = 177;
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const uint8_t qjsc_hello_module[177] = {
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0x0b, 0x07, 0x30, 0x65, 0x78, 0x61, 0x6d, 0x70,
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0x0c, 0x07, 0x30, 0x65, 0x78, 0x61, 0x6d, 0x70,
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0x6c, 0x65, 0x73, 0x2f, 0x68, 0x65, 0x6c, 0x6c,
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0x6f, 0x5f, 0x6d, 0x6f, 0x64, 0x75, 0x6c, 0x65,
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0x2e, 0x6a, 0x73, 0x1e, 0x2e, 0x2f, 0x66, 0x69,
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@ -60,7 +60,7 @@ const uint8_t qjsc_hello_module[177] = {
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0x6f, 0x20, 0x57, 0x6f, 0x72, 0x6c, 0x64, 0x10,
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0x66, 0x69, 0x62, 0x28, 0x31, 0x30, 0x29, 0x3d,
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0x0d, 0xb2, 0x03, 0x01, 0xb4, 0x03, 0x00, 0x00,
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0x01, 0x00, 0xb6, 0x03, 0x00, 0x0c, 0x20, 0x02,
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0x01, 0x00, 0xb6, 0x03, 0x00, 0x0c, 0x20, 0xfa,
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0x01, 0x9e, 0x01, 0x00, 0x00, 0x00, 0x05, 0x01,
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0x00, 0x32, 0x00, 0xb6, 0x03, 0x00, 0x0c, 0x08,
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0xe9, 0x02, 0x29, 0x38, 0xdc, 0x00, 0x00, 0x00,
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13803
gen/repl.c
13803
gen/repl.c
File diff suppressed because it is too large
Load diff
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@ -5,7 +5,7 @@
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const uint32_t qjsc_test_fib_size = 166;
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const uint8_t qjsc_test_fib[166] = {
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0x0b, 0x07, 0x28, 0x65, 0x78, 0x61, 0x6d, 0x70,
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0x0c, 0x07, 0x28, 0x65, 0x78, 0x61, 0x6d, 0x70,
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0x6c, 0x65, 0x73, 0x2f, 0x74, 0x65, 0x73, 0x74,
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0x5f, 0x66, 0x69, 0x62, 0x2e, 0x6a, 0x73, 0x10,
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0x2e, 0x2f, 0x66, 0x69, 0x62, 0x2e, 0x73, 0x6f,
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@ -15,7 +15,7 @@ const uint8_t qjsc_test_fib[166] = {
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0x6f, 0x72, 0x6c, 0x64, 0x10, 0x66, 0x69, 0x62,
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0x28, 0x31, 0x30, 0x29, 0x3d, 0x0d, 0xb2, 0x03,
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0x01, 0xb4, 0x03, 0x00, 0x00, 0x01, 0x00, 0xb6,
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0x03, 0x00, 0x0c, 0x20, 0x02, 0x01, 0x9e, 0x01,
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0x03, 0x00, 0x0c, 0x20, 0xfa, 0x01, 0x9e, 0x01,
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0x00, 0x00, 0x00, 0x05, 0x01, 0x00, 0x32, 0x00,
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0xb6, 0x03, 0x00, 0x0c, 0x08, 0xe9, 0x02, 0x29,
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0x38, 0xdc, 0x00, 0x00, 0x00, 0x42, 0xdd, 0x00,
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17
qjsc.c
17
qjsc.c
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@ -56,7 +56,7 @@ static namelist_t cmodule_list;
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static namelist_t init_module_list;
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static FILE *outfile;
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static const char *c_ident_prefix = "qjsc_";
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static int strip;
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void namelist_add(namelist_t *lp, const char *name, const char *short_name,
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int flags)
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@ -155,8 +155,15 @@ static void output_object_code(JSContext *ctx,
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{
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uint8_t *out_buf;
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size_t out_buf_len;
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int flags = JS_WRITE_OBJ_BYTECODE;
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out_buf = JS_WriteObject(ctx, &out_buf_len, obj, JS_WRITE_OBJ_BYTECODE);
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if (strip) {
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flags |= JS_WRITE_OBJ_STRIP_SOURCE;
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if (strip > 1)
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flags |= JS_WRITE_OBJ_STRIP_DEBUG;
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}
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out_buf = JS_WriteObject(ctx, &out_buf_len, obj, flags);
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if (!out_buf) {
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js_std_dump_error(ctx);
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exit(1);
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@ -354,6 +361,7 @@ int main(int argc, char **argv)
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cname = NULL;
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module = -1;
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verbose = 0;
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strip = 0;
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stack_size = 0;
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memset(&dynamic_module_list, 0, sizeof(dynamic_module_list));
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@ -362,7 +370,7 @@ int main(int argc, char **argv)
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namelist_add(&cmodule_list, "os", "os", 0);
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for(;;) {
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c = getopt(argc, argv, "ho:N:mxevM:p:S:D:");
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c = getopt(argc, argv, "ho:N:mxesvM:p:S:D:");
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if (c == -1)
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break;
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switch(c) {
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@ -399,6 +407,9 @@ int main(int argc, char **argv)
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case 'D':
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namelist_add(&dynamic_module_list, optarg, NULL, 0);
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break;
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case 's':
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strip++;
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break;
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case 'v':
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verbose++;
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break;
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23
quickjs.c
23
quickjs.c
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@ -32601,7 +32601,7 @@ typedef enum BCTagEnum {
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BC_TAG_OBJECT_REFERENCE,
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} BCTagEnum;
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#define BC_VERSION 11
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#define BC_VERSION 12
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typedef struct BCWriterState {
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JSContext *ctx;
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@ -32609,6 +32609,8 @@ typedef struct BCWriterState {
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BOOL allow_bytecode : 8;
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BOOL allow_sab : 8;
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BOOL allow_reference : 8;
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BOOL allow_source : 1;
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BOOL allow_debug : 1;
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uint32_t first_atom;
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uint32_t *atom_to_idx;
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int atom_to_idx_size;
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@ -32971,6 +32973,7 @@ static int JS_WriteFunctionTag(BCWriterState *s, JSValue obj)
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bc_set_flags(&flags, &idx, b->super_allowed, 1);
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bc_set_flags(&flags, &idx, b->arguments_allowed, 1);
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bc_set_flags(&flags, &idx, b->backtrace_barrier, 1);
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bc_set_flags(&flags, &idx, s->allow_debug, 1);
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assert(idx <= 16);
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bc_put_u16(s, flags);
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bc_put_u8(s, b->js_mode);
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@ -33027,13 +33030,19 @@ static int JS_WriteFunctionTag(BCWriterState *s, JSValue obj)
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if (JS_WriteFunctionBytecode(s, b))
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goto fail;
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if (s->allow_debug) {
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bc_put_atom(s, b->filename);
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bc_put_leb128(s, b->line_num);
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bc_put_leb128(s, b->col_num);
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bc_put_leb128(s, b->pc2line_len);
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dbuf_put(&s->dbuf, b->pc2line_buf, b->pc2line_len);
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if (s->allow_source && b->source) {
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bc_put_leb128(s, b->source_len);
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dbuf_put(&s->dbuf, b->source, b->source_len);
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} else {
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bc_put_leb128(s, 0);
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}
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}
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return 0;
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fail:
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return -1;
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@ -33409,6 +33418,8 @@ uint8_t *JS_WriteObject2(JSContext *ctx, size_t *psize, JSValue obj,
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s->allow_bytecode = ((flags & JS_WRITE_OBJ_BYTECODE) != 0);
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s->allow_sab = ((flags & JS_WRITE_OBJ_SAB) != 0);
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s->allow_reference = ((flags & JS_WRITE_OBJ_REFERENCE) != 0);
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s->allow_source = ((flags & JS_WRITE_OBJ_STRIP_SOURCE) == 0);
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s->allow_debug = ((flags & JS_WRITE_OBJ_STRIP_DEBUG) == 0);
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/* XXX: could use a different version when bytecode is included */
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if (s->allow_bytecode)
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s->first_atom = JS_ATOM_END;
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@ -33864,7 +33875,7 @@ static JSValue JS_ReadFunctionTag(BCReaderState *s)
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JSValue obj = JS_UNDEFINED;
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uint16_t v16;
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uint8_t v8;
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int idx, i, local_count;
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int idx, i, local_count, has_debug_info;
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int function_size, cpool_offset, byte_code_offset;
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int closure_var_offset, vardefs_offset;
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uint32_t ic_len;
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@ -33887,6 +33898,7 @@ static JSValue JS_ReadFunctionTag(BCReaderState *s)
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bc.super_allowed = bc_get_flags(v16, &idx, 1);
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bc.arguments_allowed = bc_get_flags(v16, &idx, 1);
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bc.backtrace_barrier = bc_get_flags(v16, &idx, 1);
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has_debug_info = bc_get_flags(v16, &idx, 1);
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if (bc_get_u8(s, &v8))
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goto fail;
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bc.js_mode = v8;
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@ -34041,6 +34053,9 @@ static JSValue JS_ReadFunctionTag(BCReaderState *s)
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goto fail;
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bc_read_trace(s, "}\n");
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}
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if (!has_debug_info)
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goto nodebug;
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/* read optional debug information */
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bc_read_trace(s, "debug {\n");
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if (bc_get_atom(s, &b->filename))
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@ -34078,8 +34093,11 @@ static JSValue JS_ReadFunctionTag(BCReaderState *s)
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goto fail;
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}
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bc_read_trace(s, "}\n");
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nodebug:
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b->realm = JS_DupContext(ctx);
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return obj;
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fail:
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JS_FreeAtom(ctx, bc.func_name);
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JS_FreeValue(ctx, obj);
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@ -36510,6 +36528,7 @@ static JSValue js_function_toString(JSContext *ctx, JSValue this_val,
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p = JS_VALUE_GET_OBJ(this_val);
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if (js_class_has_bytecode(p->class_id)) {
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JSFunctionBytecode *b = p->u.func.function_bytecode;
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if (b->source)
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return JS_NewStringLen(ctx, b->source, b->source_len);
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}
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{
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@ -816,9 +816,9 @@ JS_EXTERN int JS_ExecutePendingJob(JSRuntime *rt, JSContext **pctx);
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#define JS_WRITE_OBJ_BYTECODE (1 << 0) /* allow function/module */
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#define JS_WRITE_OBJ_BSWAP (0) /* byte swapped output (obsolete, handled transparently) */
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#define JS_WRITE_OBJ_SAB (1 << 2) /* allow SharedArrayBuffer */
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#define JS_WRITE_OBJ_REFERENCE (1 << 3) /* allow object references to
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encode arbitrary object
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graph */
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#define JS_WRITE_OBJ_REFERENCE (1 << 3) /* allow object references to encode arbitrary object graph */
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#define JS_WRITE_OBJ_STRIP_SOURCE (1 << 4) /* do not write source code information */
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#define JS_WRITE_OBJ_STRIP_DEBUG (1 << 5) /* do not write debug information */
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JS_EXTERN uint8_t *JS_WriteObject(JSContext *ctx, size_t *psize, JSValue obj, int flags);
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JS_EXTERN uint8_t *JS_WriteObject2(JSContext *ctx, size_t *psize, JSValue obj,
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int flags, uint8_t ***psab_tab, size_t *psab_tab_len);
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