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RISC-V: vectorized RandomX main loop

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SChernykh
2025-12-26 21:11:11 +01:00
parent 99488751f1
commit f661e1eb30
18 changed files with 1460 additions and 97 deletions
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2
src/backend/cpu/interfaces/ICpuInfo.h
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@@ -85,6 +85,7 @@ public:
FLAG_POPCNT,
FLAG_CAT_L3,
FLAG_VM,
FLAG_RISCV_VECTOR,
FLAG_MAX
};
@@ -109,6 +110,7 @@ public:
virtual bool hasOneGbPages() const = 0;
virtual bool hasXOP() const = 0;
virtual bool isVM() const = 0;
virtual bool hasRISCV_Vector() const = 0;
virtual bool jccErratum() const = 0;
virtual const char *backend() const = 0;
virtual const char *brand() const = 0;

4
src/backend/cpu/platform/BasicCpuInfo.cpp
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@@ -58,8 +58,8 @@
namespace xmrig {
constexpr size_t kCpuFlagsSize = 15;
static const std::array<const char *, kCpuFlagsSize> flagNames = { "aes", "vaes", "avx", "avx2", "avx512f", "bmi2", "osxsave", "pdpe1gb", "sse2", "ssse3", "sse4.1", "xop", "popcnt", "cat_l3", "vm" };
constexpr size_t kCpuFlagsSize = 16;
static const std::array<const char *, kCpuFlagsSize> flagNames = { "aes", "vaes", "avx", "avx2", "avx512f", "bmi2", "osxsave", "pdpe1gb", "sse2", "ssse3", "sse4.1", "xop", "popcnt", "cat_l3", "vm", "rvv" };
static_assert(kCpuFlagsSize == ICpuInfo::FLAG_MAX, "kCpuFlagsSize and FLAG_MAX mismatch");

1
src/backend/cpu/platform/BasicCpuInfo.h
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@@ -52,6 +52,7 @@ protected:
inline bool hasOneGbPages() const override { return has(FLAG_PDPE1GB); }
inline bool hasXOP() const override { return has(FLAG_XOP); }
inline bool isVM() const override { return has(FLAG_VM); }
inline bool hasRISCV_Vector() const override { return has(FLAG_RISCV_VECTOR); }
inline bool jccErratum() const override { return m_jccErratum; }
inline const char *brand() const override { return m_brand; }
inline const std::vector<int32_t> &units() const override { return m_units; }

3
src/backend/cpu/platform/BasicCpuInfo_riscv.cpp
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@@ -55,6 +55,9 @@ xmrig::BasicCpuInfo::BasicCpuInfo() :
strncpy(m_brand, name.data(), sizeof(m_brand) - 1);
}
// Check for vector extensions
m_flags.set(FLAG_RISCV_VECTOR, has_riscv_vector());
// Check for crypto extensions (Zknd/Zkne/Zknh - AES and SHA)
m_flags.set(FLAG_AES, has_riscv_crypto());

6
src/backend/cpu/platform/lscpu_riscv.cpp
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@@ -34,7 +34,7 @@ struct riscv_cpu_desc
bool has_vector = false;
bool has_crypto = false;
inline bool isReady() const { return !model.isNull(); }
inline bool isReady() const { return !isa.isNull(); }
};
static bool lookup_riscv(char *line, const char *pattern, String &value)
@@ -82,7 +82,7 @@ static bool read_riscv_cpuinfo(riscv_cpu_desc *desc)
if (lookup_riscv(buf, "isa", desc->isa)) {
// Check for vector extensions
if (strstr(buf, "zve") || strstr(buf, "v_")) {
if (strstr(buf, "zve64d") || strstr(buf, "v_")) {
desc->has_vector = true;
}
// Check for crypto extensions (AES, SHA, etc.)
@@ -96,7 +96,7 @@ static bool read_riscv_cpuinfo(riscv_cpu_desc *desc)
lookup_riscv(buf, "uarch", desc->uarch);
if (desc->isReady() && !desc->isa.isNull()) {
if (desc->isReady()) {
break;
}
}