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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
//
#include "fold.h"
namespace vsm {
const unsigned char * sse2_foldaa(const unsigned char * toFoldOrg, size_t sz, unsigned char * foldedOrg)
{
typedef char v16qi __attribute__ ((__vector_size__(16)));
typedef long long v2di __attribute__ ((__vector_size__(16)));
static v16qi _G_0 = { '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1 };
static v16qi _G_9 = { '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9' };
static v16qi _G_a = { 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1 };
static v16qi _G_z = { 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z' };
static v16qi _G_8bit = { (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4,
(char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4 };
static v2di _G_lowCase = { 0x2020202020202020ULL, 0x2020202020202020ULL };
const v16qi *toFold = reinterpret_cast<const v16qi *>(toFoldOrg);
v2di * folded = reinterpret_cast<v2di *>(foldedOrg);
size_t i=0;
for (size_t m=sz/16; i < m; i++)
{
#ifndef __INTEL_COMPILER
int nonAscii = __builtin_ia32_pmovmskb128(toFold[i]);
if (nonAscii)
{
v16qi non8Mask = __builtin_ia32_pcmpgtb128(_G_8bit, toFold[i]);
int non8bit = __builtin_ia32_pmovmskb128(non8Mask);
if (non8bit)
{
break;
}
break;
}
v16qi _0 = __builtin_ia32_pcmpgtb128(toFold[i], _G_0);
v16qi _z = __builtin_ia32_pcmpgtb128(toFold[i], _G_z);
v2di _0_z = __builtin_ia32_pxor128(v2di(_0), v2di(_z));
v2di toLow = __builtin_ia32_pand128(_0_z, v2di(toFold[i]));
v16qi low = v16qi(__builtin_ia32_por128(toLow, _G_lowCase));
_0 = __builtin_ia32_pcmpgtb128(low, _G_0);
v16qi _9 = __builtin_ia32_pcmpgtb128(low, _G_9);
v16qi _a = __builtin_ia32_pcmpgtb128(low, _G_a);
_z = __builtin_ia32_pcmpgtb128(low, _G_z);
v2di _0_9_m = __builtin_ia32_pxor128(v2di(_0), v2di(_9));
v2di _a_z_m = __builtin_ia32_pxor128(v2di(_a), v2di(_z));
v2di _0_9 = __builtin_ia32_pand128(_0_9_m, v2di(low));
v2di _a_z = __builtin_ia32_pand128(_a_z_m, v2di(low));
folded[i] = __builtin_ia32_por128(_0_9, _a_z);
#else
# warning "Intel's icc compiler does not like __builtin_ia32_pxor128"
abort();
#endif
}
return toFoldOrg+i*16;
}
const unsigned char * sse2_foldua(const unsigned char * toFoldOrg, size_t sz, unsigned char * foldedOrg)
{
typedef char v16qi __attribute__ ((__vector_size__(16)));
typedef long long v2di __attribute__ ((__vector_size__(16)));
static v16qi _G_0 = { '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1, '0'-1 };
static v16qi _G_9 = { '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9', '9' };
static v16qi _G_a = { 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1, 'a'-1 };
static v16qi _G_z = { 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z', 'z' };
static v16qi _G_8bit = { (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4,
(char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4, (char)0xc4 };
static v2di _G_lowCase = { 0x2020202020202020ULL, 0x2020202020202020ULL };
v2di * folded = reinterpret_cast<v2di *>(foldedOrg);
size_t i=0;
for (size_t m=sz/16; i < m; i++)
{
#ifndef __INTEL_COMPILER
v16qi current = __builtin_ia32_loaddqu(reinterpret_cast<const char *>(&toFoldOrg[i*16]));
int nonAscii = __builtin_ia32_pmovmskb128(current);
if (nonAscii)
{
v16qi non8Mask = __builtin_ia32_pcmpgtb128(_G_8bit, current);
int non8bit = __builtin_ia32_pmovmskb128(non8Mask);
if (non8bit)
{
break;
}
break;
}
v16qi _0 = __builtin_ia32_pcmpgtb128(current, _G_0);
v16qi _z = __builtin_ia32_pcmpgtb128(current, _G_z);
v2di _0_z = __builtin_ia32_pxor128(v2di(_0), v2di(_z));
v2di toLow = __builtin_ia32_pand128(_0_z, v2di(current));
v16qi low = v16qi(__builtin_ia32_por128(toLow, _G_lowCase));
_0 = __builtin_ia32_pcmpgtb128(low, _G_0);
v16qi _9 = __builtin_ia32_pcmpgtb128(low, _G_9);
v16qi _a = __builtin_ia32_pcmpgtb128(low, _G_a);
_z = __builtin_ia32_pcmpgtb128(low, _G_z);
v2di _0_9_m = __builtin_ia32_pxor128(v2di(_0), v2di(_9));
v2di _a_z_m = __builtin_ia32_pxor128(v2di(_a), v2di(_z));
v2di _0_9 = __builtin_ia32_pand128(_0_9_m, v2di(low));
v2di _a_z = __builtin_ia32_pand128(_a_z_m, v2di(low));
folded[i] = __builtin_ia32_por128(_0_9, _a_z);
#else
# warning "Intel's icc compiler does not like __builtin_ia32_pxor128"
abort();
#endif
}
return toFoldOrg+i*16;
}
}
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