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ir: Add opcodes for vector paired maximum and minimums

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For the time being, we can just do a naive implementation which avoids
falling back to the interpreter a bit. Horizontal operations aren't
necessarily x86 SIMD's forte anyways.
This commit is contained in:
Lioncash
2018-07-29 16:08:31 -04:00
committed by MerryMage
parent 43344c5400
commit 463b9a3d02
4 changed files with 167 additions and 0 deletions
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95
src/backend_x64/emit_x64_vector.cpp
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@@ -1866,6 +1866,101 @@ void EmitX64::EmitVectorPairedAddUnsignedWiden32(EmitContext& ctx, IR::Inst* ins
ctx.reg_alloc.DefineValue(inst, a);
}
template <typename T, typename Function>
static void PairedOperation(VectorArray<T>& result, const VectorArray<T>& x, const VectorArray<T>& y, Function fn) {
const size_t range = x.size() / 2;
for (size_t i = 0; i < range; i++) {
result[i] = fn(x[2 * i], x[2 * i + 1]);
}
for (size_t i = 0; i < range; i++) {
result[range + i] = fn(y[2 * i], y[2 * i + 1]);
}
}
template <typename T>
static void PairedMax(VectorArray<T>& result, const VectorArray<T>& x, const VectorArray<T>& y) {
PairedOperation(result, x, y, [](auto a, auto b) { return std::max(a, b); });
}
template <typename T>
static void PairedMin(VectorArray<T>& result, const VectorArray<T>& x, const VectorArray<T>& y) {
PairedOperation(result, x, y, [](auto a, auto b) { return std::min(a, b); });
}
void EmitX64::EmitVectorPairedMaxS8(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<s8>& result, const VectorArray<s8>& a, const VectorArray<s8>& b) {
PairedMax(result, a, b);
});
}
void EmitX64::EmitVectorPairedMaxS16(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<s16>& result, const VectorArray<s16>& a, const VectorArray<s16>& b) {
PairedMax(result, a, b);
});
}
void EmitX64::EmitVectorPairedMaxS32(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<s32>& result, const VectorArray<s32>& a, const VectorArray<s32>& b) {
PairedMax(result, a, b);
});
}
void EmitX64::EmitVectorPairedMaxU8(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<u8>& result, const VectorArray<u8>& a, const VectorArray<u8>& b) {
PairedMax(result, a, b);
});
}
void EmitX64::EmitVectorPairedMaxU16(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<u16>& result, const VectorArray<u16>& a, const VectorArray<u16>& b) {
PairedMax(result, a, b);
});
}
void EmitX64::EmitVectorPairedMaxU32(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<u32>& result, const VectorArray<u32>& a, const VectorArray<u32>& b) {
PairedMax(result, a, b);
});
}
void EmitX64::EmitVectorPairedMinS8(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<s8>& result, const VectorArray<s8>& a, const VectorArray<s8>& b) {
PairedMin(result, a, b);
});
}
void EmitX64::EmitVectorPairedMinS16(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<s16>& result, const VectorArray<s16>& a, const VectorArray<s16>& b) {
PairedMin(result, a, b);
});
}
void EmitX64::EmitVectorPairedMinS32(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<s32>& result, const VectorArray<s32>& a, const VectorArray<s32>& b) {
PairedMin(result, a, b);
});
}
void EmitX64::EmitVectorPairedMinU8(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<u8>& result, const VectorArray<u8>& a, const VectorArray<u8>& b) {
PairedMin(result, a, b);
});
}
void EmitX64::EmitVectorPairedMinU16(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<u16>& result, const VectorArray<u16>& a, const VectorArray<u16>& b) {
PairedMin(result, a, b);
});
}
void EmitX64::EmitVectorPairedMinU32(EmitContext& ctx, IR::Inst* inst) {
EmitTwoArgumentFallback(code, ctx, inst, [](VectorArray<u32>& result, const VectorArray<u32>& a, const VectorArray<u32>& b) {
PairedMin(result, a, b);
});
}
template <typename D, typename T>
static D PolynomialMultiply(T lhs, T rhs) {
constexpr size_t bit_size = Common::BitSize<T>();