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PPU LLVM: rewrite AVG instructions

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This commit is contained in:
Nekotekina 2018-01-30 00:38:51 +03:00
parent 93c0a0aa35
commit b01e460863
1 changed files with 18 additions and 14 deletions
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32
rpcs3/Emu/Cell/PPUTranslator.cpp
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@ -672,42 +672,46 @@ void PPUTranslator::VANDC(ppu_opcode_t op)
set_vr(op.vd, eval(a & ~b));
}
#define AVG_OP(a, b) m_ir->CreateLShr(m_ir->CreateSub(a, m_ir->CreateNot(b)), 1) /* (a + b + 1) >> 1 */
void PPUTranslator::VAVGSB(ppu_opcode_t op)
{
const auto ab = SExt(GetVrs(VrType::vi8, op.va, op.vb));
SetVr(op.vd, AVG_OP(ab[0], ab[1]));
const auto a = get_vr<s8[16]>(op.va);
const auto b = get_vr<s8[16]>(op.vb);
set_vr(op.vd, eval(avg(a, b)));
}
void PPUTranslator::VAVGSH(ppu_opcode_t op)
{
const auto ab = SExt(GetVrs(VrType::vi16, op.va, op.vb));
SetVr(op.vd, AVG_OP(ab[0], ab[1]));
const auto a = get_vr<s16[8]>(op.va);
const auto b = get_vr<s16[8]>(op.vb);
set_vr(op.vd, eval(avg(a, b)));
}
void PPUTranslator::VAVGSW(ppu_opcode_t op)
{
const auto ab = SExt(GetVrs(VrType::vi32, op.va, op.vb));
SetVr(op.vd, AVG_OP(ab[0], ab[1]));
const auto a = get_vr<s32[4]>(op.va);
const auto b = get_vr<s32[4]>(op.vb);
set_vr(op.vd, eval(avg(a, b)));
}
void PPUTranslator::VAVGUB(ppu_opcode_t op)
{
const auto ab = ZExt(GetVrs(VrType::vi8, op.va, op.vb));
SetVr(op.vd, AVG_OP(ab[0], ab[1]));
const auto a = get_vr<u8[16]>(op.va);
const auto b = get_vr<u8[16]>(op.vb);
set_vr(op.vd, eval(avg(a, b)));
}
void PPUTranslator::VAVGUH(ppu_opcode_t op)
{
const auto ab = ZExt(GetVrs(VrType::vi16, op.va, op.vb));
SetVr(op.vd, AVG_OP(ab[0], ab[1]));
const auto a = get_vr<u16[8]>(op.va);
const auto b = get_vr<u16[8]>(op.vb);
set_vr(op.vd, eval(avg(a, b)));
}
void PPUTranslator::VAVGUW(ppu_opcode_t op)
{
const auto ab = ZExt(GetVrs(VrType::vi32, op.va, op.vb));
SetVr(op.vd, AVG_OP(ab[0], ab[1]));
const auto a = get_vr<u32[4]>(op.va);
const auto b = get_vr<u32[4]>(op.vb);
set_vr(op.vd, eval(avg(a, b)));
}
void PPUTranslator::VCFSX(ppu_opcode_t op)