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[AArch64] Add SME impls of MultiplyRow_16 and ARGBMultiplyRow

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Mostly just a translation of the existing Neon code to SME.

Change-Id: Ic3d6b8ac774c9a1bb9204ed6c78c8802668bffe9
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/6067147
Reviewed-by: Frank Barchard <fbarchard@chromium.org>
This commit is contained in:
George Steed 2024-09-12 10:21:17 +01:00 committed by Frank Barchard
parent 88a3472f52
commit 9144583f22
3 changed files with 116 additions and 0 deletions
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10
include/libyuv/row.h
View File

@ -589,8 +589,10 @@ extern "C" {
// The following are available on AArch64 SME platforms:
#if !defined(LIBYUV_DISABLE_SME) && defined(CLANG_HAS_SME) && \
defined(__aarch64__)
#define HAS_ARGBMULTIPLYROW_SME
#define HAS_I422TOARGBROW_SME
#define HAS_I444TOARGBROW_SME
#define HAS_MULTIPLYROW_16_SME
#endif
// The following are available on AArch64 platforms:
@ -3372,6 +3374,10 @@ void MultiplyRow_16_Any_NEON(const uint16_t* src_ptr,
uint16_t* dst_ptr,
int scale,
int width);
void MultiplyRow_16_SME(const uint16_t* src_y,
uint16_t* dst_y,
int scale,
int width);
void DivideRow_16_C(const uint16_t* src_y,
uint16_t* dst_y,
@ -5039,6 +5045,10 @@ void ARGBMultiplyRow_Any_NEON(const uint8_t* y_buf,
const uint8_t* uv_buf,
uint8_t* dst_ptr,
int width);
void ARGBMultiplyRow_SME(const uint8_t* src_argb,
const uint8_t* src_argb1,
uint8_t* dst_argb,
int width);
void ARGBMultiplyRow_MSA(const uint8_t* src_argb0,
const uint8_t* src_argb1,
uint8_t* dst_argb,

10
source/planar_functions.cc
View File

@ -829,6 +829,11 @@ void ConvertToMSBPlane_16(const uint16_t* src_y,
}
}
#endif
#if defined(HAS_MULTIPLYROW_16_SME)
if (TestCpuFlag(kCpuHasSME)) {
MultiplyRow_16 = MultiplyRow_16_SME;
}
#endif
for (y = 0; y < height; ++y) {
MultiplyRow_16(src_y, dst_y, scale, width);
@ -3134,6 +3139,11 @@ int ARGBMultiply(const uint8_t* src_argb0,
}
}
#endif
#if defined(HAS_ARGBMULTIPLYROW_SME)
if (TestCpuFlag(kCpuHasSME)) {
ARGBMultiplyRow = ARGBMultiplyRow_SME;
}
#endif
#if defined(HAS_ARGBMULTIPLYROW_MSA)
if (TestCpuFlag(kCpuHasMSA)) {
ARGBMultiplyRow = ARGBMultiplyRow_Any_MSA;

96
source/row_sme.cc
View File

@ -216,6 +216,102 @@ __arm_locally_streaming void I422ToARGBRow_SME(
: "cc", "memory", YUVTORGB_SVE_REGS);
}
__arm_locally_streaming void MultiplyRow_16_SME(const uint16_t* src_y,
uint16_t* dst_y,
int scale,
int width) {
// Streaming-SVE only, no use of ZA tile.
int vl;
asm volatile(
"cnth %x[vl] \n"
"mov z0.h, %w[scale] \n"
"subs %w[width], %w[width], %w[vl] \n"
"b.lt 2f \n"
// Run bulk of computation with an all-true predicate to avoid predicate
// generation overhead.
"ptrue p0.h \n"
"1: \n"
"ld1h {z1.h}, p0/z, [%[src_y]] \n"
"incb %[src_y] \n"
"mul z1.h, z0.h, z1.h \n"
"subs %w[width], %w[width], %w[vl] \n"
"st1h {z1.h}, p0, [%[dst_y]] \n"
"incb %[dst_y] \n"
"b.ge 1b \n"
"2: \n"
"adds %w[width], %w[width], %w[vl] \n"
"b.eq 99f \n"
// Calculate a predicate for the final iteration to deal with the tail.
"whilelt p0.h, wzr, %w[width] \n"
"ld1h {z1.h}, p0/z, [%[src_y]] \n"
"mul z1.h, z0.h, z1.h \n"
"st1h {z1.h}, p0, [%[dst_y]] \n"
"99: \n"
: [src_y] "+r"(src_y), // %[src_y]
[dst_y] "+r"(dst_y), // %[dst_y]
[width] "+r"(width), // %[width]
[vl] "=&r"(vl) // %[vl]
: [scale] "r"(scale) // %[scale]
: "memory", "cc", "z0", "z1", "p0");
}
__arm_locally_streaming void ARGBMultiplyRow_SME(const uint8_t* src_argb,
const uint8_t* src_argb1,
uint8_t* dst_argb,
int width) {
// Streaming-SVE only, no use of ZA tile.
width *= 4;
int vl;
asm volatile(
"cntb %x[vl] \n"
"subs %w[width], %w[width], %w[vl] \n"
"b.lt 2f \n"
// Run bulk of computation with an all-true predicate to avoid predicate
// generation overhead.
"ptrue p0.b \n"
"1: \n"
"ld1b {z0.b}, p0/z, [%[src_argb]] \n"
"ld1b {z1.b}, p0/z, [%[src_argb1]] \n"
"incb %[src_argb] \n"
"incb %[src_argb1] \n"
"umullb z2.h, z0.b, z1.b \n"
"umullt z1.h, z0.b, z1.b \n"
"rshrnb z0.b, z2.h, #8 \n"
"rshrnt z0.b, z1.h, #8 \n"
"subs %w[width], %w[width], %w[vl] \n"
"st1b {z0.b}, p0, [%[dst_argb]] \n"
"incb %[dst_argb] \n"
"b.ge 1b \n"
"2: \n"
"adds %w[width], %w[width], %w[vl] \n"
"b.eq 99f \n"
// Calculate a predicate for the final iteration to deal with the tail.
"whilelt p0.b, wzr, %w[width] \n"
"ld1b {z0.b}, p0/z, [%[src_argb]] \n"
"ld1b {z1.b}, p0/z, [%[src_argb1]] \n"
"umullb z2.h, z0.b, z1.b \n"
"umullt z1.h, z0.b, z1.b \n"
"rshrnb z0.b, z2.h, #8 \n"
"rshrnt z0.b, z1.h, #8 \n"
"st1b {z0.b}, p0, [%[dst_argb]] \n"
"99: \n"
: [src_argb] "+r"(src_argb), // %[src_argb]
[src_argb1] "+r"(src_argb1), // %[src_argb1]
[dst_argb] "+r"(dst_argb), // %[dst_argb]
[width] "+r"(width), // %[width]
[vl] "=&r"(vl) // %[vl]
:
: "memory", "cc", "z0", "z1", "z2", "p0", "p1");
}
#endif // !defined(LIBYUV_DISABLE_SME) && defined(CLANG_HAS_SME) &&
// defined(__aarch64__)