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-rw-r--r--src/xenia/base/memory.cc90
1 files changed, 30 insertions, 60 deletions
diff --git a/src/xenia/base/memory.cc b/src/xenia/base/memory.cc
index 3ddef8113..2c22c7c5b 100644
--- a/src/xenia/base/memory.cc
+++ b/src/xenia/base/memory.cc
@@ -28,11 +28,14 @@ void copy_and_swap_16_aligned(void* dest_ptr, const void* src_ptr,
size_t count) {
auto dest = reinterpret_cast<uint16_t*>(dest_ptr);
auto src = reinterpret_cast<const uint16_t*>(src_ptr);
+ __m128i shufmask =
+ _mm_set_epi8(0x0E, 0x0F, 0x0C, 0x0D, 0x0A, 0x0B, 0x08, 0x09, 0x06, 0x07,
+ 0x04, 0x05, 0x02, 0x03, 0x00, 0x01);
+
size_t i;
for (i = 0; i + 8 <= count; i += 8) {
__m128i input = _mm_load_si128(reinterpret_cast<const __m128i*>(&src[i]));
- __m128i output =
- _mm_or_si128(_mm_slli_epi16(input, 8), _mm_srli_epi16(input, 8));
+ __m128i output = _mm_shuffle_epi8(input, shufmask);
_mm_store_si128(reinterpret_cast<__m128i*>(&dest[i]), output);
}
for (; i < count; ++i) { // handle residual elements
@@ -44,11 +47,14 @@ void copy_and_swap_16_unaligned(void* dest_ptr, const void* src_ptr,
size_t count) {
auto dest = reinterpret_cast<uint16_t*>(dest_ptr);
auto src = reinterpret_cast<const uint16_t*>(src_ptr);
+ __m128i shufmask =
+ _mm_set_epi8(0x0E, 0x0F, 0x0C, 0x0D, 0x0A, 0x0B, 0x08, 0x09, 0x06, 0x07,
+ 0x04, 0x05, 0x02, 0x03, 0x00, 0x01);
+
size_t i;
for (i = 0; i + 8 <= count; i += 8) {
__m128i input = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&src[i]));
- __m128i output =
- _mm_or_si128(_mm_slli_epi16(input, 8), _mm_srli_epi16(input, 8));
+ __m128i output = _mm_shuffle_epi8(input, shufmask);
_mm_storeu_si128(reinterpret_cast<__m128i*>(&dest[i]), output);
}
for (; i < count; ++i) { // handle residual elements
@@ -60,22 +66,14 @@ void copy_and_swap_32_aligned(void* dest_ptr, const void* src_ptr,
size_t count) {
auto dest = reinterpret_cast<uint32_t*>(dest_ptr);
auto src = reinterpret_cast<const uint32_t*>(src_ptr);
- __m128i byte2mask = _mm_set1_epi32(0x00FF0000);
- __m128i byte3mask = _mm_set1_epi32(0x0000FF00);
+ __m128i shufmask =
+ _mm_set_epi8(0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B, 0x04, 0x05,
+ 0x06, 0x07, 0x00, 0x01, 0x02, 0x03);
+
size_t i;
for (i = 0; i + 4 <= count; i += 4) {
__m128i input = _mm_load_si128(reinterpret_cast<const __m128i*>(&src[i]));
- // Do the four shifts.
- __m128i byte1 = _mm_slli_epi32(input, 24);
- __m128i byte2 = _mm_slli_epi32(input, 8);
- __m128i byte3 = _mm_srli_epi32(input, 8);
- __m128i byte4 = _mm_srli_epi32(input, 24);
- // OR bytes together.
- __m128i output = _mm_or_si128(byte1, byte4);
- byte2 = _mm_and_si128(byte2, byte2mask);
- output = _mm_or_si128(output, byte2);
- byte3 = _mm_and_si128(byte3, byte3mask);
- output = _mm_or_si128(output, byte3);
+ __m128i output = _mm_shuffle_epi8(input, shufmask);
_mm_store_si128(reinterpret_cast<__m128i*>(&dest[i]), output);
}
for (; i < count; ++i) { // handle residual elements
@@ -87,22 +85,14 @@ void copy_and_swap_32_unaligned(void* dest_ptr, const void* src_ptr,
size_t count) {
auto dest = reinterpret_cast<uint32_t*>(dest_ptr);
auto src = reinterpret_cast<const uint32_t*>(src_ptr);
- __m128i byte2mask = _mm_set1_epi32(0x00FF0000);
- __m128i byte3mask = _mm_set1_epi32(0x0000FF00);
+ __m128i shufmask =
+ _mm_set_epi8(0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B, 0x04, 0x05,
+ 0x06, 0x07, 0x00, 0x01, 0x02, 0x03);
+
size_t i;
for (i = 0; i + 4 <= count; i += 4) {
__m128i input = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&src[i]));
- // Do the four shifts.
- __m128i byte1 = _mm_slli_epi32(input, 24);
- __m128i byte2 = _mm_slli_epi32(input, 8);
- __m128i byte3 = _mm_srli_epi32(input, 8);
- __m128i byte4 = _mm_srli_epi32(input, 24);
- // OR bytes together.
- __m128i output = _mm_or_si128(byte1, byte4);
- byte2 = _mm_and_si128(byte2, byte2mask);
- output = _mm_or_si128(output, byte2);
- byte3 = _mm_and_si128(byte3, byte3mask);
- output = _mm_or_si128(output, byte3);
+ __m128i output = _mm_shuffle_epi8(input, shufmask);
_mm_storeu_si128(reinterpret_cast<__m128i*>(&dest[i]), output);
}
for (; i < count; ++i) { // handle residual elements
@@ -114,24 +104,14 @@ void copy_and_swap_64_aligned(void* dest_ptr, const void* src_ptr,
size_t count) {
auto dest = reinterpret_cast<uint64_t*>(dest_ptr);
auto src = reinterpret_cast<const uint64_t*>(src_ptr);
- __m128i byte2mask = _mm_set1_epi32(0x00FF0000);
- __m128i byte3mask = _mm_set1_epi32(0x0000FF00);
+ __m128i shufmask =
+ _mm_set_epi8(0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x00, 0x01,
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07);
+
size_t i;
for (i = 0; i + 2 <= count; i += 2) {
__m128i input = _mm_load_si128(reinterpret_cast<const __m128i*>(&src[i]));
- // Do the four shifts.
- __m128i byte1 = _mm_slli_epi32(input, 24);
- __m128i byte2 = _mm_slli_epi32(input, 8);
- __m128i byte3 = _mm_srli_epi32(input, 8);
- __m128i byte4 = _mm_srli_epi32(input, 24);
- // OR bytes together.
- __m128i output = _mm_or_si128(byte1, byte4);
- byte2 = _mm_and_si128(byte2, byte2mask);
- output = _mm_or_si128(output, byte2);
- byte3 = _mm_and_si128(byte3, byte3mask);
- output = _mm_or_si128(output, byte3);
- // Reorder the two words.
- output = _mm_shuffle_epi32(output, _MM_SHUFFLE(2, 3, 0, 1));
+ __m128i output = _mm_shuffle_epi8(input, shufmask);
_mm_store_si128(reinterpret_cast<__m128i*>(&dest[i]), output);
}
for (; i < count; ++i) { // handle residual elements
@@ -143,24 +123,14 @@ void copy_and_swap_64_unaligned(void* dest_ptr, const void* src_ptr,
size_t count) {
auto dest = reinterpret_cast<uint64_t*>(dest_ptr);
auto src = reinterpret_cast<const uint64_t*>(src_ptr);
- __m128i byte2mask = _mm_set1_epi32(0x00FF0000);
- __m128i byte3mask = _mm_set1_epi32(0x0000FF00);
+ __m128i shufmask =
+ _mm_set_epi8(0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x00, 0x01,
+ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07);
+
size_t i;
for (i = 0; i + 2 <= count; i += 2) {
__m128i input = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&src[i]));
- // Do the four shifts.
- __m128i byte1 = _mm_slli_epi32(input, 24);
- __m128i byte2 = _mm_slli_epi32(input, 8);
- __m128i byte3 = _mm_srli_epi32(input, 8);
- __m128i byte4 = _mm_srli_epi32(input, 24);
- // OR bytes together.
- __m128i output = _mm_or_si128(byte1, byte4);
- byte2 = _mm_and_si128(byte2, byte2mask);
- output = _mm_or_si128(output, byte2);
- byte3 = _mm_and_si128(byte3, byte3mask);
- output = _mm_or_si128(output, byte3);
- // Reorder the two words.
- output = _mm_shuffle_epi32(output, _MM_SHUFFLE(2, 3, 0, 1));
+ __m128i output = _mm_shuffle_epi8(input, shufmask);
_mm_storeu_si128(reinterpret_cast<__m128i*>(&dest[i]), output);
}
for (; i < count; ++i) { // handle residual elements
generated by cgit v1.2.3 (git 2.25.1) at 2026-08-03 01:47:56 +0000