355 lines
14 KiB
C++
355 lines
14 KiB
C++
/*
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* Copyright 2012 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "libyuv/basic_types.h"
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#include "libyuv/compare_row.h"
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#include "libyuv/row.h"
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#ifdef __cplusplus
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namespace libyuv {
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extern "C" {
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#endif
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// This module is for GCC x86 and x64.
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#if !defined(LIBYUV_DISABLE_X86) && \
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(defined(__x86_64__) || (defined(__i386__) && !defined(_MSC_VER)))
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#if defined(__x86_64__)
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uint32 HammingDistance_SSE42(const uint8* src_a,
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const uint8* src_b,
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int count) {
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uint64 diff = 0u;
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asm volatile(
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"xor %3,%3 \n"
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"xor %%r8,%%r8 \n"
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"xor %%r9,%%r9 \n"
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"xor %%r10,%%r10 \n"
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// Process 32 bytes per loop.
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LABELALIGN
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"1: \n"
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"mov (%0),%%rcx \n"
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"mov 0x8(%0),%%rdx \n"
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"xor (%1),%%rcx \n"
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"xor 0x8(%1),%%rdx \n"
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"popcnt %%rcx,%%rcx \n"
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"popcnt %%rdx,%%rdx \n"
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"mov 0x10(%0),%%rsi \n"
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"mov 0x18(%0),%%rdi \n"
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"xor 0x10(%1),%%rsi \n"
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"xor 0x18(%1),%%rdi \n"
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"popcnt %%rsi,%%rsi \n"
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"popcnt %%rdi,%%rdi \n"
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"add $0x20,%0 \n"
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"add $0x20,%1 \n"
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"add %%rcx,%3 \n"
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"add %%rdx,%%r8 \n"
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"add %%rsi,%%r9 \n"
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"add %%rdi,%%r10 \n"
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"sub $0x20,%2 \n"
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"jg 1b \n"
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"add %%r8, %3 \n"
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"add %%r9, %3 \n"
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"add %%r10, %3 \n"
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: "+r"(src_a), // %0
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"+r"(src_b), // %1
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"+r"(count), // %2
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"=r"(diff) // %3
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:
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: "memory", "cc", "rcx", "rdx", "rsi", "rdi", "r8", "r9", "r10");
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return static_cast<uint32>(diff);
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}
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#else
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uint32 HammingDistance_SSE42(const uint8* src_a,
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const uint8* src_b,
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int count) {
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uint32 diff = 0u;
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asm volatile(
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// Process 16 bytes per loop.
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LABELALIGN
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"1: \n"
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"mov (%0),%%ecx \n"
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"mov 0x4(%0),%%edx \n"
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"xor (%1),%%ecx \n"
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"xor 0x4(%1),%%edx \n"
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"popcnt %%ecx,%%ecx \n"
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"add %%ecx,%3 \n"
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"popcnt %%edx,%%edx \n"
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"add %%edx,%3 \n"
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"mov 0x8(%0),%%ecx \n"
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"mov 0xc(%0),%%edx \n"
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"xor 0x8(%1),%%ecx \n"
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"xor 0xc(%1),%%edx \n"
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"popcnt %%ecx,%%ecx \n"
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"add %%ecx,%3 \n"
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"popcnt %%edx,%%edx \n"
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"add %%edx,%3 \n"
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"add $0x10,%0 \n"
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"add $0x10,%1 \n"
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"sub $0x10,%2 \n"
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"jg 1b \n"
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: "+r"(src_a), // %0
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"+r"(src_b), // %1
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"+r"(count), // %2
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"+r"(diff) // %3
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:
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: "memory", "cc", "ecx", "edx");
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return diff;
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}
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#endif
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static vec8 kNibbleMask = {15, 15, 15, 15, 15, 15, 15, 15,
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15, 15, 15, 15, 15, 15, 15, 15};
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static vec8 kBitCount = {0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4};
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uint32 HammingDistance_SSSE3(const uint8* src_a,
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const uint8* src_b,
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int count) {
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uint32 diff = 0u;
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asm volatile(
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"movdqa %4,%%xmm2 \n"
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"movdqa %5,%%xmm3 \n"
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"pxor %%xmm0,%%xmm0 \n"
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"pxor %%xmm1,%%xmm1 \n"
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"sub %0,%1 \n"
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LABELALIGN
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"1: \n"
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"movdqa (%0),%%xmm4 \n"
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"movdqa 0x10(%0), %%xmm5 \n"
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"pxor (%0,%1), %%xmm4 \n"
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"movdqa %%xmm4,%%xmm6 \n"
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"pand %%xmm2,%%xmm6 \n"
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"psrlw $0x4,%%xmm4 \n"
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"movdqa %%xmm3,%%xmm7 \n"
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"pshufb %%xmm6,%%xmm7 \n"
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"pand %%xmm2,%%xmm4 \n"
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"movdqa %%xmm3,%%xmm6 \n"
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"pshufb %%xmm4,%%xmm6 \n"
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"paddb %%xmm7,%%xmm6 \n"
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"pxor 0x10(%0,%1),%%xmm5 \n"
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"add $0x20,%0 \n"
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"movdqa %%xmm5,%%xmm4 \n"
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"pand %%xmm2,%%xmm5 \n"
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"psrlw $0x4,%%xmm4 \n"
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"movdqa %%xmm3,%%xmm7 \n"
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"pshufb %%xmm5,%%xmm7 \n"
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"pand %%xmm2,%%xmm4 \n"
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"movdqa %%xmm3,%%xmm5 \n"
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"pshufb %%xmm4,%%xmm5 \n"
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"paddb %%xmm7,%%xmm5 \n"
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"paddb %%xmm5,%%xmm6 \n"
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"psadbw %%xmm1,%%xmm6 \n"
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"paddd %%xmm6,%%xmm0 \n"
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"sub $0x20,%2 \n"
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"jg 1b \n"
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"pshufd $0xaa,%%xmm0,%%xmm1 \n"
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"paddd %%xmm1,%%xmm0 \n"
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"movd %%xmm0, %3 \n"
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: "+r"(src_a), // %0
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"+r"(src_b), // %1
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"+r"(count), // %2
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"=r"(diff) // %3
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: "m"(kNibbleMask), // %4
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"m"(kBitCount) // %5
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: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6",
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"xmm7");
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return diff;
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}
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#ifdef HAS_HAMMINGDISTANCE_AVX2
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uint32 HammingDistance_AVX2(const uint8* src_a, const uint8* src_b, int count) {
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uint32 diff = 0u;
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asm volatile(
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"vbroadcastf128 %4,%%ymm2 \n"
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"vbroadcastf128 %5,%%ymm3 \n"
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"vpxor %%ymm0,%%ymm0,%%ymm0 \n"
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"vpxor %%ymm1,%%ymm1,%%ymm1 \n"
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"sub %0,%1 \n"
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LABELALIGN
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"1: \n"
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"vmovdqa (%0),%%ymm4 \n"
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"vmovdqa 0x20(%0), %%ymm5 \n"
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"vpxor (%0,%1), %%ymm4, %%ymm4 \n"
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"vpand %%ymm2,%%ymm4,%%ymm6 \n"
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"vpsrlw $0x4,%%ymm4,%%ymm4 \n"
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"vpshufb %%ymm6,%%ymm3,%%ymm6 \n"
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"vpand %%ymm2,%%ymm4,%%ymm4 \n"
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"vpshufb %%ymm4,%%ymm3,%%ymm4 \n"
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"vpaddb %%ymm4,%%ymm6,%%ymm6 \n"
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"vpxor 0x20(%0,%1),%%ymm5,%%ymm4 \n"
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"add $0x40,%0 \n"
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"vpand %%ymm2,%%ymm4,%%ymm5 \n"
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"vpsrlw $0x4,%%ymm4,%%ymm4 \n"
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"vpshufb %%ymm5,%%ymm3,%%ymm5 \n"
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"vpand %%ymm2,%%ymm4,%%ymm4 \n"
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"vpshufb %%ymm4,%%ymm3,%%ymm4 \n"
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"vpaddb %%ymm5,%%ymm4,%%ymm4 \n"
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"vpaddb %%ymm6,%%ymm4,%%ymm4 \n"
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"vpsadbw %%ymm1,%%ymm4,%%ymm4 \n"
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"vpaddd %%ymm0,%%ymm4,%%ymm0 \n"
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"sub $0x40,%2 \n"
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"jg 1b \n"
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"vpermq $0xb1,%%ymm0,%%ymm1 \n"
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"vpaddd %%ymm1,%%ymm0,%%ymm0 \n"
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"vpermq $0xaa,%%ymm0,%%ymm1 \n"
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"vpaddd %%ymm1,%%ymm0,%%ymm0 \n"
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"vmovd %%xmm0, %3 \n"
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"vzeroupper \n"
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: "+r"(src_a), // %0
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"+r"(src_b), // %1
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"+r"(count), // %2
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"=r"(diff) // %3
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: "m"(kNibbleMask), // %4
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"m"(kBitCount) // %5
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: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6");
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return diff;
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}
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#endif // HAS_HAMMINGDISTANCE_AVX2
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uint32 SumSquareError_SSE2(const uint8* src_a, const uint8* src_b, int count) {
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uint32 sse;
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asm volatile (
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"pxor %%xmm0,%%xmm0 \n"
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"pxor %%xmm5,%%xmm5 \n"
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LABELALIGN
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"1: \n"
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"movdqu " MEMACCESS(0) ",%%xmm1 \n"
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"lea " MEMLEA(0x10, 0) ",%0 \n"
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"movdqu " MEMACCESS(1) ",%%xmm2 \n"
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"lea " MEMLEA(0x10, 1) ",%1 \n"
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"movdqa %%xmm1,%%xmm3 \n"
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"psubusb %%xmm2,%%xmm1 \n"
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"psubusb %%xmm3,%%xmm2 \n"
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"por %%xmm2,%%xmm1 \n"
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"movdqa %%xmm1,%%xmm2 \n"
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"punpcklbw %%xmm5,%%xmm1 \n"
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"punpckhbw %%xmm5,%%xmm2 \n"
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"pmaddwd %%xmm1,%%xmm1 \n"
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"pmaddwd %%xmm2,%%xmm2 \n"
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"paddd %%xmm1,%%xmm0 \n"
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"paddd %%xmm2,%%xmm0 \n"
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"sub $0x10,%2 \n"
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"jg 1b \n"
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"pshufd $0xee,%%xmm0,%%xmm1 \n"
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"paddd %%xmm1,%%xmm0 \n"
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"pshufd $0x1,%%xmm0,%%xmm1 \n"
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"paddd %%xmm1,%%xmm0 \n"
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"movd %%xmm0,%3 \n"
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: "+r"(src_a), // %0
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"+r"(src_b), // %1
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"+r"(count), // %2
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"=g"(sse) // %3
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:: "memory", "cc", "xmm0", "xmm1", "xmm2", "xmm3", "xmm5"
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);
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return sse;
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}
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static uvec32 kHash16x33 = {0x92d9e201, 0, 0, 0}; // 33 ^ 16
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static uvec32 kHashMul0 = {
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0x0c3525e1, // 33 ^ 15
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0xa3476dc1, // 33 ^ 14
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0x3b4039a1, // 33 ^ 13
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0x4f5f0981, // 33 ^ 12
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};
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static uvec32 kHashMul1 = {
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0x30f35d61, // 33 ^ 11
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0x855cb541, // 33 ^ 10
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0x040a9121, // 33 ^ 9
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0x747c7101, // 33 ^ 8
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};
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static uvec32 kHashMul2 = {
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0xec41d4e1, // 33 ^ 7
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0x4cfa3cc1, // 33 ^ 6
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0x025528a1, // 33 ^ 5
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0x00121881, // 33 ^ 4
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};
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static uvec32 kHashMul3 = {
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0x00008c61, // 33 ^ 3
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0x00000441, // 33 ^ 2
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0x00000021, // 33 ^ 1
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0x00000001, // 33 ^ 0
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};
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uint32 HashDjb2_SSE41(const uint8* src, int count, uint32 seed) {
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uint32 hash;
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asm volatile (
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"movd %2,%%xmm0 \n"
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"pxor %%xmm7,%%xmm7 \n"
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"movdqa %4,%%xmm6 \n"
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LABELALIGN
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"1: \n"
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"movdqu " MEMACCESS(0) ",%%xmm1 \n"
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"lea " MEMLEA(0x10, 0) ",%0 \n"
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"pmulld %%xmm6,%%xmm0 \n"
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"movdqa %5,%%xmm5 \n"
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"movdqa %%xmm1,%%xmm2 \n"
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"punpcklbw %%xmm7,%%xmm2 \n"
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"movdqa %%xmm2,%%xmm3 \n"
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"punpcklwd %%xmm7,%%xmm3 \n"
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"pmulld %%xmm5,%%xmm3 \n"
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"movdqa %6,%%xmm5 \n"
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"movdqa %%xmm2,%%xmm4 \n"
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"punpckhwd %%xmm7,%%xmm4 \n"
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"pmulld %%xmm5,%%xmm4 \n"
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"movdqa %7,%%xmm5 \n"
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"punpckhbw %%xmm7,%%xmm1 \n"
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"movdqa %%xmm1,%%xmm2 \n"
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"punpcklwd %%xmm7,%%xmm2 \n"
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"pmulld %%xmm5,%%xmm2 \n"
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"movdqa %8,%%xmm5 \n"
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"punpckhwd %%xmm7,%%xmm1 \n"
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"pmulld %%xmm5,%%xmm1 \n"
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"paddd %%xmm4,%%xmm3 \n"
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"paddd %%xmm2,%%xmm1 \n"
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"paddd %%xmm3,%%xmm1 \n"
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"pshufd $0xe,%%xmm1,%%xmm2 \n"
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"paddd %%xmm2,%%xmm1 \n"
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"pshufd $0x1,%%xmm1,%%xmm2 \n"
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"paddd %%xmm2,%%xmm1 \n"
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"paddd %%xmm1,%%xmm0 \n"
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"sub $0x10,%1 \n"
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"jg 1b \n"
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"movd %%xmm0,%3 \n"
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: "+r"(src), // %0
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"+r"(count), // %1
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"+rm"(seed), // %2
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"=g"(hash) // %3
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: "m"(kHash16x33), // %4
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"m"(kHashMul0), // %5
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"m"(kHashMul1), // %6
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"m"(kHashMul2), // %7
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"m"(kHashMul3) // %8
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: "memory", "cc"
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, "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7"
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);
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return hash;
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}
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#endif // defined(__x86_64__) || (defined(__i386__) && !defined(__pic__)))
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#ifdef __cplusplus
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} // extern "C"
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} // namespace libyuv
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#endif
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