VTimeLLM/flash-attention/csrc/cutlass/include/cute/arch/simd_sm100.hpp

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//

//

#pragma once

#include <cute/config.hpp>
#include <cute/arch/config.hpp>
#include <cute/numeric/real.hpp>

namespace cute {

CUTE_HOST_DEVICE
void 
add(float2      & c,
    float2 const& a, 
    float2 const& b) 
{
#if defined(CUTE_ARCH_FLOAT2_MATH_ENABLED)
  asm volatile("add.f32x2 %0, %1, %2;\n"
    : "=l"(reinterpret_cast<uint64_t      &>(c))
    :  "l"(reinterpret_cast<uint64_t const&>(a)),
       "l"(reinterpret_cast<uint64_t const&>(b)));
#else
  add(c.x, a.x, b.x);
  add(c.y, a.y, b.y);
#endif
}

CUTE_HOST_DEVICE
void 
mul(float2      & c,
    float2 const& a, 
    float2 const& b) 
{
#if defined(CUTE_ARCH_FLOAT2_MATH_ENABLED)
  asm volatile("mul.f32x2 %0, %1, %2;\n"
    : "=l"(reinterpret_cast<uint64_t      &>(c))
    :  "l"(reinterpret_cast<uint64_t const&>(a)),
       "l"(reinterpret_cast<uint64_t const&>(b)));
#else
  mul(c.x, a.x, b.x);
  mul(c.y, a.y, b.y);
#endif
}

CUTE_HOST_DEVICE
void 
fma(float2      & d,
    float2 const& a, 
    float2 const& b, 
    float2 const& c) 
{
#if defined(CUTE_ARCH_FLOAT2_MATH_ENABLED)
  asm volatile("fma.rn.f32x2 %0, %1, %2, %3;\n"
    : "=l"(reinterpret_cast<uint64_t      &>(d))
    :  "l"(reinterpret_cast<uint64_t const&>(a)),
       "l"(reinterpret_cast<uint64_t const&>(b)),
       "l"(reinterpret_cast<uint64_t const&>(c)));
#else
  fma(d.x, a.x, b.x, c.x);
  fma(d.y, a.y, b.y, c.y);
#endif
}

} // namespace cute