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SPU LLVM: add splat_scalar helper 

Unrolls into zshuffle from the preferred slot.
This commit is contained in:
Nekotekina 2021-01-17 15:13:28 +03:00
parent c06707c891
commit def364fe28
1 changed files with 40 additions and 11 deletions
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51
rpcs3/Emu/Cell/SPURecompiler.cpp
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@ -4001,6 +4001,35 @@ class spu_llvm_recompiler : public spu_recompiler_base, public cpu_translator
}
}
// Splat scalar value from the preferred slot
template <typename T>
auto splat_scalar(T&& arg)
{
using VT = std::remove_extent_t<typename std::decay_t<T>::type>;
if constexpr (sizeof(VT) == 1)
{
return zshuffle(std::forward<T>(arg), 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12);
}
else if constexpr (sizeof(VT) == 2)
{
return zshuffle(std::forward<T>(arg), 6, 6, 6, 6, 6, 6, 6, 6);
}
else if constexpr (sizeof(VT) == 4)
{
return zshuffle(std::forward<T>(arg), 3, 3, 3, 3);
}
else if constexpr (sizeof(VT) == 8)
{
return zshuffle(std::forward<T>(arg), 1, 1);
}
else
{
static_assert(sizeof(VT) == 16);
return std::forward<T>(arg);
}
}
void set_reg_fixed(u32 index, llvm::Value* value, bool fixup = true)
{
llvm::StoreInst* dummy{};
@ -6468,27 +6497,27 @@ public:
{
const auto as = byteswap(a);
const auto sc = build<u8[16]>(15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0);
const auto sh = (sc + (zshuffle(get_vr<u8[16]>(op.rb), 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12) >> 3)) & 0xf;
const auto sh = (sc + (splat_scalar(get_vr<u8[16]>(op.rb)) >> 3)) & 0xf;
set_vr(op.rt, pshufb(as, sh));
return;
}
const auto sc = build<u8[16]>(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
const auto sh = (sc - (zshuffle(get_vr<u8[16]>(op.rb), 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12) >> 3)) & 0xf;
const auto sh = (sc - (splat_scalar(get_vr<u8[16]>(op.rb)) >> 3)) & 0xf;
set_vr(op.rt, pshufb(a, sh));
}
void ROTQMBYBI(spu_opcode_t op)
{
const auto sc = build<u8[16]>(112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127);
const auto sh = sc + (-(zshuffle(get_vr<u8[16]>(op.rb), 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12) >> 3) & 0x1f);
const auto sh = sc + (-(splat_scalar(get_vr<u8[16]>(op.rb)) >> 3) & 0x1f);
set_vr(op.rt, pshufb(get_vr<u8[16]>(op.ra), sh));
}
void SHLQBYBI(spu_opcode_t op)
{
const auto sc = build<u8[16]>(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
const auto sh = sc - (zshuffle(get_vr<u8[16]>(op.rb), 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12) >> 3);
const auto sh = sc - (splat_scalar(get_vr<u8[16]>(op.rb)) >> 3);
set_vr(op.rt, pshufb(get_vr<u8[16]>(op.ra), sh));
}
@ -6556,21 +6585,21 @@ public:
void ROTQBI(spu_opcode_t op)
{
const auto a = get_vr(op.ra);
const auto b = zshuffle(get_vr(op.rb) & 0x7, 3, 3, 3, 3);
const auto b = splat_scalar(get_vr(op.rb) & 0x7);
set_vr(op.rt, fshl(a, zshuffle(a, 3, 0, 1, 2), b));
}
void ROTQMBI(spu_opcode_t op)
{
const auto a = get_vr(op.ra);
const auto b = zshuffle(-get_vr(op.rb) & 0x7, 3, 3, 3, 3);
const auto b = splat_scalar(-get_vr(op.rb) & 0x7);
set_vr(op.rt, fshr(zshuffle(a, 1, 2, 3, 4), a, b));
}
void SHLQBI(spu_opcode_t op)
{
const auto a = get_vr(op.ra);
const auto b = zshuffle(get_vr(op.rb) & 0x7, 3, 3, 3, 3);
const auto b = splat_scalar(get_vr(op.rb) & 0x7);
set_vr(op.rt, fshl(a, zshuffle(a, 4, 0, 1, 2), b));
}
@ -6598,13 +6627,13 @@ public:
{
const auto as = byteswap(a);
const auto sc = build<u8[16]>(15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0);
const auto sh = eval((sc + zshuffle(b, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12)) & 0xf);
const auto sh = eval((sc + splat_scalar(b)) & 0xf);
set_vr(op.rt, pshufb(as, sh));
return;
}
const auto sc = build<u8[16]>(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
const auto sh = eval((sc - zshuffle(b, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12)) & 0xf);
const auto sh = eval((sc - splat_scalar(b)) & 0xf);
set_vr(op.rt, pshufb(a, sh));
}
@ -6613,7 +6642,7 @@ public:
const auto a = get_vr<u8[16]>(op.ra);
const auto b = get_vr<u8[16]>(op.rb);
const auto sc = build<u8[16]>(112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127);
const auto sh = sc + (-zshuffle(b, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12) & 0x1f);
const auto sh = sc + (-splat_scalar(b) & 0x1f);
set_vr(op.rt, pshufb(a, sh));
}
@ -6622,7 +6651,7 @@ public:
const auto a = get_vr<u8[16]>(op.ra);
const auto b = get_vr<u8[16]>(op.rb);
const auto sc = build<u8[16]>(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
const auto sh = sc - (zshuffle(b, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12) & 0x1f);
const auto sh = sc - (splat_scalar(b) & 0x1f);
set_vr(op.rt, pshufb(a, sh));
}