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Parser optimizations.

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- parser is now non-recursive (i.e. parse function is not called recursively in any case);
 - byte-code is now more compact:
    - constants are now not immediately dumped upon occurence, but later - where necessary;
    - assignments are combined with unary / binary operations;
    - binary operations are encoded more compactly in many cases;
 - byte-code arrays are now allocated separately for each scope (so, GC of the scopes now becomes possible);
 - byte-code is dumped directly into corresponding byte-code arrays:
   - linked lists of op_meta are not now used for main code of a scope.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
JerryScript-DCO-1.0-Signed-off-by: Andrey Shitov a.shitov@samsung.com
This commit is contained in:
Andrey Shitov
2015-11-03 19:14:19 +03:00
committed by Ruben Ayrapetyan
parent b1de93abd6
commit 50d124bfc3
51 changed files with 9044 additions and 7401 deletions
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jerry-core/vm/pretty-printer.cpp
+15 -47
View File
@@ -21,7 +21,6 @@
#include "lexer.h"
#include "ecma-helpers.h"
#include "ecma-globals.h"
#include "serializer.h"
#include "lit-literal.h"
static const char* opcode_names[] =
@@ -52,6 +51,8 @@ static uint8_t opcode_sizes[] =
#include "vm-opcodes.inc.h"
};
const bytecode_data_header_t *bc_to_print_header_p = NULL;
static char buff[ECMA_MAX_CHARS_IN_STRINGIFIED_NUMBER];
static void
@@ -110,7 +111,9 @@ var_to_str (vm_instr_t instr, lit_cpointer_t lit_ids[], vm_instr_counter_t oc, u
}
else
{
return lit_cp_to_str (serializer_get_literal_cp_by_uid (instr.data.raw_args[current_arg - 1], NULL, oc));
return lit_cp_to_str (bc_get_literal_cp_by_uid (instr.data.raw_args[current_arg - 1],
bc_to_print_header_p,
oc));
}
}
@@ -186,6 +189,8 @@ pp_op_meta (const bytecode_data_header_t *bytecode_data_p,
op_meta opm,
bool rewrite)
{
bc_to_print_header_p = bytecode_data_p;
dump_asm (oc, opm.op);
printf (" // ");
@@ -301,6 +306,11 @@ pp_op_meta (const bytecode_data_header_t *bytecode_data_p,
}
break;
}
case VM_OP_FUNC_EXPR_REF:
{
printf ("%s = function ();", VAR (1));
break;
}
case VM_OP_FUNC_EXPR_N:
{
if (opm.op.data.func_expr_n.arg_list == 0)
@@ -378,7 +388,7 @@ pp_op_meta (const bytecode_data_header_t *bytecode_data_p,
while ((int16_t) start >= 0 && !found)
{
start--;
switch (serializer_get_instr (bytecode_data_p, start).op_idx)
switch (bc_get_instr (bytecode_data_p, start).op_idx)
{
case VM_OP_CALL_N:
case VM_OP_CONSTRUCT_N:
@@ -392,7 +402,7 @@ pp_op_meta (const bytecode_data_header_t *bytecode_data_p,
}
}
}
vm_instr_t start_op = serializer_get_instr (bytecode_data_p, start);
vm_instr_t start_op = bc_get_instr (bytecode_data_p, start);
switch (start_op.op_idx)
{
case VM_OP_CALL_N:
@@ -439,7 +449,7 @@ pp_op_meta (const bytecode_data_header_t *bytecode_data_p,
}
for (vm_instr_counter_t counter = start; counter <= oc; counter++)
{
vm_instr_t meta_op = serializer_get_instr (bytecode_data_p, counter);
vm_instr_t meta_op = bc_get_instr (bytecode_data_p, counter);
switch (meta_op.op_idx)
{
@@ -550,48 +560,6 @@ pp_op_meta (const bytecode_data_header_t *bytecode_data_p,
printf ("end try");
break;
}
case OPCODE_META_TYPE_SCOPE_CODE_FLAGS:
{
if (opm.op.data.meta.data_1 != VM_IDX_REWRITE_GENERAL_CASE
&& opm.op.data.meta.data_1 != VM_IDX_EMPTY)
{
vm_idx_t scope_flags = opm.op.data.meta.data_1;
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_STRICT)
{
printf ("[use strict] ");
scope_flags &= (vm_idx_t) ~(OPCODE_SCOPE_CODE_FLAGS_STRICT);
}
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_NOT_REF_ARGUMENTS_IDENTIFIER)
{
printf ("[no 'arguments'] ");
scope_flags &= (vm_idx_t) ~(OPCODE_SCOPE_CODE_FLAGS_NOT_REF_ARGUMENTS_IDENTIFIER);
}
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_NOT_REF_EVAL_IDENTIFIER)
{
printf ("[no 'eval'] ");
scope_flags &= (vm_idx_t) ~(OPCODE_SCOPE_CODE_FLAGS_NOT_REF_EVAL_IDENTIFIER);
}
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_ARGUMENTS_ON_REGISTERS)
{
printf ("[arguments are placed on registers] ");
scope_flags &= (vm_idx_t) ~(OPCODE_SCOPE_CODE_FLAGS_ARGUMENTS_ON_REGISTERS);
}
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_NO_LEX_ENV)
{
printf ("[no lexical environment should be created for the scope] ");
scope_flags &= (vm_idx_t) ~(OPCODE_SCOPE_CODE_FLAGS_NO_LEX_ENV);
}
JERRY_ASSERT (scope_flags == 0);
}
else
{
printf ("[to be rewritten]");
}
break;
}
default:
{
JERRY_UNREACHABLE ();