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Improve multiplication in vm

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This patch improves the ecma_integers_values multiplication by checking if the multiplier or multiplicand is power of 2.
If it is it uses right shift instead of multiplication.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
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Robert Fancsik
2017-11-27 12:56:50 +01:00
committed by yichoi
parent 90f2473f08
commit 458dc58b59
3 changed files with 27 additions and 1 deletions
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jerry-core/ecma/base/ecma-helpers.h
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@@ -243,6 +243,7 @@ ecma_number_t ecma_number_get_prev (ecma_number_t num);
ecma_number_t ecma_number_get_next (ecma_number_t num);
ecma_number_t ecma_number_trunc (ecma_number_t num);
ecma_number_t ecma_number_calc_remainder (ecma_number_t left_num, ecma_number_t right_num);
ecma_value_t ecma_integer_multiply (ecma_integer_value_t left_integer, ecma_integer_value_t right_integer);
lit_utf8_size_t ecma_number_to_decimal (ecma_number_t num, lit_utf8_byte_t *out_digits_p, int32_t *out_decimal_exp_p);
lit_utf8_size_t ecma_number_to_binary_floating_point_number (ecma_number_t num,
lit_utf8_byte_t *out_digits_p,