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Add opcodes for increment and decrement; add optimizer

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This commit is contained in:
Ilmir Usmanov
2014-07-24 19:27:58 +04:00
parent c837c7d435
commit 3b0fef6e04
11 changed files with 170 additions and 32 deletions
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src/libjsparser/parser.c
+12 -30
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@@ -23,9 +23,8 @@
#define INVALID_VALUE 255
static token tok;
static OPCODE opcode, opcodes_buffer[MAX_OPCODES];
static uint8_t current_opcode_in_buffer = 0;
static uint8_t opcode_counter = 0;
static OPCODE opcode;
static T_IDX opcode_counter = 0;
static T_IDX temp_name_stack[MAX_OPCODES], temp_name_stack_head = 0, max_temp_name;
#ifdef __HOST
@@ -172,23 +171,6 @@ integer_one (void)
return lhs;
}
static void
save_opcode (void)
{
JERRY_ASSERT (current_opcode_in_buffer < MAX_OPCODES);
opcodes_buffer[current_opcode_in_buffer++] = opcode;
}
static void
dump_saved_opcodes (void)
{
uint8_t i;
for (i = 0; i < current_opcode_in_buffer; i++)
serializer_dump_opcode (&opcodes_buffer[i]);
current_opcode_in_buffer = 0;
}
/* property_name
: Identifier
| StringLiteral
@@ -859,18 +841,18 @@ parse_left_hand_side_expression (void)
static T_IDX
parse_postfix_expression (void)
{
T_IDX expr = parse_left_hand_side_expression ();
T_IDX expr = parse_left_hand_side_expression (), lhs;
tok = lexer_next_token ();
if (tok.type == TOK_DOUBLE_PLUS)
{
opcode = getop_addition (expr, expr, integer_one ());
save_opcode ();
lhs = next_temp_name ();
DUMP_OPCODE (post_incr, lhs, expr);
}
else if (tok.type == TOK_DOUBLE_MINUS)
{
opcode = getop_substraction (expr, expr, integer_one ());
save_opcode ();
lhs = next_temp_name ();
DUMP_OPCODE (post_decr, lhs, expr);
}
else
lexer_save_token (tok);
@@ -890,13 +872,15 @@ parse_unary_expression (void)
switch (tok.type)
{
case TOK_DOUBLE_PLUS:
lhs = next_temp_name ();
NEXT (expr, unary_expression);
DUMP_OPCODE (addition, expr, expr, integer_one ());
DUMP_OPCODE (pre_incr, lhs, expr);
return expr;
case TOK_DOUBLE_MINUS:
lhs = next_temp_name ();
NEXT (expr, unary_expression);
DUMP_OPCODE (substraction, expr, expr, integer_one ());
DUMP_OPCODE (pre_decr, lhs, expr);
return expr;
case TOK_PLUS:
@@ -1198,7 +1182,7 @@ parse_assignment_expression (void)
lhs = parse_conditional_expression (&was_conditional);
if (was_conditional)
{
goto end;
return lhs;
}
skip_newlines ();
@@ -1268,8 +1252,6 @@ parse_assignment_expression (void)
lexer_save_token (tok);
}
end:
dump_saved_opcodes ();
return lhs;
}