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Improve case conversion related fast paths (#4083)

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JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai daniel.batyai@h-lab.eu
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Dániel Bátyai 2020-07-31 16:25:32 +02:00 committed by GitHub
parent 40ad8c6e45
commit 611c8827ba
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 10 deletions
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28
jerry-core/lit/lit-char-helpers.c
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@ -788,16 +788,19 @@ lit_code_point_t
lit_char_to_lower_case (lit_code_point_t cp, /**< code point */
ecma_stringbuilder_t *builder_p) /**< string builder */
{
if (cp >= LIT_CHAR_UPPERCASE_A && cp <= LIT_CHAR_UPPERCASE_Z)
if (cp <= LIT_UTF8_1_BYTE_CODE_POINT_MAX)
{
lit_utf8_byte_t lowercase_char = (lit_utf8_byte_t) (cp + (LIT_CHAR_LOWERCASE_A - LIT_CHAR_UPPERCASE_A));
if (cp >= LIT_CHAR_UPPERCASE_A && cp <= LIT_CHAR_UPPERCASE_Z)
{
cp = (lit_utf8_byte_t) (cp + (LIT_CHAR_LOWERCASE_A - LIT_CHAR_UPPERCASE_A));
}
if (builder_p != NULL)
{
ecma_stringbuilder_append_byte (builder_p, lowercase_char);
ecma_stringbuilder_append_byte (builder_p, (lit_utf8_byte_t) cp);
}
return lowercase_char;
return cp;
}
#if ENABLED (JERRY_UNICODE_CASE_CONVERSION)
@ -859,16 +862,19 @@ lit_code_point_t
lit_char_to_upper_case (lit_code_point_t cp, /**< code point */
ecma_stringbuilder_t *builder_p) /**< string builder */
{
if (cp >= LIT_CHAR_LOWERCASE_A && cp <= LIT_CHAR_LOWERCASE_Z)
if (cp <= LIT_UTF8_1_BYTE_CODE_POINT_MAX)
{
lit_utf8_byte_t uppercase_char = (lit_utf8_byte_t) (cp - (LIT_CHAR_LOWERCASE_A - LIT_CHAR_UPPERCASE_A));
if (cp >= LIT_CHAR_LOWERCASE_A && cp <= LIT_CHAR_LOWERCASE_Z)
{
cp = (lit_utf8_byte_t) (cp - (LIT_CHAR_LOWERCASE_A - LIT_CHAR_UPPERCASE_A));
}
if (builder_p != NULL)
{
ecma_stringbuilder_append_byte (builder_p, uppercase_char);
ecma_stringbuilder_append_byte (builder_p, (lit_utf8_byte_t) cp);
}
return uppercase_char;
return cp;
}
#if ENABLED (JERRY_UNICODE_CASE_CONVERSION)
@ -929,7 +935,8 @@ bool
lit_char_fold_to_lower (lit_code_point_t cp) /**< code point */
{
#if ENABLED (JERRY_UNICODE_CASE_CONVERSION)
return (cp > LIT_UTF16_CODE_UNIT_MAX
return (cp <= LIT_UTF8_1_BYTE_CODE_POINT_MAX
|| cp > LIT_UTF16_CODE_UNIT_MAX
|| (!lit_search_char_in_interval_array ((ecma_char_t) cp,
lit_unicode_folding_skip_to_lower_interval_starts,
lit_unicode_folding_skip_to_lower_interval_lengths,
@ -952,7 +959,8 @@ bool
lit_char_fold_to_upper (lit_code_point_t cp) /**< code point */
{
#if ENABLED (JERRY_UNICODE_CASE_CONVERSION)
return (cp <= LIT_UTF16_CODE_UNIT_MAX
return (cp > LIT_UTF8_1_BYTE_CODE_POINT_MAX
&& cp <= LIT_UTF16_CODE_UNIT_MAX
&& (lit_search_char_in_interval_array ((ecma_char_t) cp,
lit_unicode_folding_to_upper_interval_starts,
lit_unicode_folding_to_upper_interval_lengths,