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Convert certain push number opcodes to literals (#2328)

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Binary operations are much faster with literal arguments.
The byte immediates are still kept for other cases, e.g. array declarations.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2018-05-18 10:22:53 +02:00
committed by yichoi
parent 64b16bf190
commit 5560c76b41
10 changed files with 232 additions and 81 deletions
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jerry-core/parser/js/js-parser.c
+19 -22
View File
@@ -356,11 +356,6 @@ parser_compute_indicies (parser_context_t *context_p, /**< context */
{
uint16_t init_index;
if (literal_p->status_flags & LEXER_FLAG_UNUSED_IDENT)
{
continue;
}
if (literal_p->type != LEXER_IDENT_LITERAL)
{
if (literal_p->type == LEXER_STRING_LITERAL
@@ -392,6 +387,11 @@ parser_compute_indicies (parser_context_t *context_p, /**< context */
continue;
}
if (literal_p->status_flags & LEXER_FLAG_UNUSED_IDENT)
{
continue;
}
if (!(literal_p->status_flags & LEXER_FLAG_VAR))
{
literal_p->prop.index = ident_index;
@@ -560,8 +560,6 @@ parser_generate_initializers (parser_context_t *context_p, /**< context */
uint16_t next_index = uninitialized_var_end;
#endif /* !JERRY_NDEBUG */
context_p->status_flags |= PARSER_LEXICAL_ENV_NEEDED;
*dst_p++ = CBC_INITIALIZE_VARS;
dst_p = parser_encode_literal (dst_p,
(uint16_t) uninitialized_var_end,
@@ -1267,20 +1265,6 @@ parse_print_final_cbc (ecma_compiled_code_t *compiled_code_p, /**< compiled code
literal_pool_p);
continue;
}
if (opcode == CBC_PUSH_NUMBER_POS_BYTE)
{
JERRY_DEBUG_MSG (" number:%d\n", *byte_code_p + 1);
byte_code_p++;
continue;
}
if (opcode == CBC_PUSH_NUMBER_NEG_BYTE)
{
JERRY_DEBUG_MSG (" number:%d\n", -(*byte_code_p + 1));
byte_code_p++;
continue;
}
}
else
{
@@ -1332,7 +1316,20 @@ parse_print_final_cbc (ecma_compiled_code_t *compiled_code_p, /**< compiled code
if (flags & CBC_HAS_BYTE_ARG)
{
JERRY_DEBUG_MSG (" byte_arg:%d", *byte_code_p);
if (opcode == CBC_PUSH_NUMBER_POS_BYTE
|| ext_opcode == CBC_EXT_PUSH_LITERAL_PUSH_NUMBER_POS_BYTE)
{
JERRY_DEBUG_MSG (" number:%d", (int) *byte_code_p + 1);
}
else if (opcode == CBC_PUSH_NUMBER_NEG_BYTE
|| ext_opcode == CBC_EXT_PUSH_LITERAL_PUSH_NUMBER_NEG_BYTE)
{
JERRY_DEBUG_MSG (" number:%d", -((int) *byte_code_p + 1));
}
else
{
JERRY_DEBUG_MSG (" byte_arg:%d", *byte_code_p);
}
byte_code_p++;
}