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Reverse the generation of line info. (#2363)

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JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2018-05-30 12:57:12 +02:00
committed by yichoi
parent d5593c12b4
commit 7be9f91d22
2 changed files with 86 additions and 21 deletions
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jerry-core/parser/js/js-parser-util.c
+12 -4
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@@ -418,13 +418,21 @@ parser_emit_line_info (parser_context_t *context_p, /**< context */
context_p->last_line_info_line = line;
const uint32_t max_shift_plus_7 = 7 * 5;
uint32_t shift = 7;
while (shift < max_shift_plus_7 && (line >> shift) > 0)
{
shift += 7;
}
do
{
uint8_t byte = (uint8_t) (line & CBC_LOWER_SEVEN_BIT_MASK);
shift -= 7;
line >>= 7;
uint8_t byte = (uint8_t) ((line >> shift) & CBC_LOWER_SEVEN_BIT_MASK);
if (line > 0)
if (shift > 0)
{
byte = (uint8_t) (byte | CBC_HIGHEST_BIT_MASK);
}
@@ -432,7 +440,7 @@ parser_emit_line_info (parser_context_t *context_p, /**< context */
PARSER_APPEND_TO_BYTE_CODE (context_p, byte);
context_p->byte_code_size++;
}
while (line > 0);
while (shift > 0);
} /* parser_emit_line_info */
#endif /* JERRY_ENABLE_LINE_INFO */