From a202d82339c4e52ab9522eef230dd80b93615333 Mon Sep 17 00:00:00 2001 From: Milo Yip Date: Fri, 22 Jan 2016 18:42:50 +0800 Subject: [PATCH] Make whitespace array more compact --- include/rapidjson/reader.h | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/include/rapidjson/reader.h b/include/rapidjson/reader.h index 6022e50c9..3911ff2e7 100644 --- a/include/rapidjson/reader.h +++ b/include/rapidjson/reader.h @@ -314,16 +314,14 @@ inline const char *SkipWhitespace_SIMD(const char* p) { return p; // The rest of string - static const char whitespaces[4][17] = { - " ", - "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n", - "\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r", - "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"}; - - const __m128i w0 = _mm_loadu_si128(reinterpret_cast(&whitespaces[0][0])); - const __m128i w1 = _mm_loadu_si128(reinterpret_cast(&whitespaces[1][0])); - const __m128i w2 = _mm_loadu_si128(reinterpret_cast(&whitespaces[2][0])); - const __m128i w3 = _mm_loadu_si128(reinterpret_cast(&whitespaces[3][0])); + #define C16(c) { c, c, c, c, c, c, c, c, c, c, c, c, c, c, c, c } + static const char whitespaces[4][16] = { C16(' '), C16('\n'), C16('\r'), C16('\t') }; + #undef C16 + + const __m128i w0 = _mm_loadu_si128(reinterpret_cast(&whitespaces[0][0])); + const __m128i w1 = _mm_loadu_si128(reinterpret_cast(&whitespaces[1][0])); + const __m128i w2 = _mm_loadu_si128(reinterpret_cast(&whitespaces[2][0])); + const __m128i w3 = _mm_loadu_si128(reinterpret_cast(&whitespaces[3][0])); for (;; p += 16) { const __m128i s = _mm_load_si128(reinterpret_cast(p));