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SPU Analyzer: Fix support for multi-block value merge
This commit is contained in:
Elad Ashkenazi
parent
50ce4cbea5
commit
8ec6187dc7
2 changed files with 177 additions and 57 deletions
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@ -2627,18 +2627,18 @@ reg_state_t reg_state_t::downgrade() const
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{
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if (flag & vf::is_const)
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{
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return reg_state_t{vf::is_mask, 0, umax, this->value, ~this->value};
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return reg_state_t{vf::is_mask, 0, umax, this->value, ~this->value, this->origin};
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}
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if (!(flag - vf::is_null))
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{
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return reg_state_t{vf::is_mask, 0, this->tag, 0, 0};
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return reg_state_t{vf::is_mask, 0, this->tag, 0, 0, this->origin};
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}
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return *this;
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}
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reg_state_t reg_state_t::merge(const reg_state_t& rhs) const
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reg_state_t reg_state_t::merge(const reg_state_t& rhs, u32 current_pc) const
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{
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if (rhs == *this)
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{
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@ -2661,12 +2661,13 @@ reg_state_t reg_state_t::merge(const reg_state_t& rhs) const
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{
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// Success (create new value tag)
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res.tag = reg_state_t::alloc_tag();
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res.origin = current_pc;
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return res;
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}
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}
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}
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return make_unknown();
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return make_unknown(current_pc);
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}
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reg_state_t reg_state_t::build_on_top_of(const reg_state_t& rhs) const
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@ -2728,9 +2729,17 @@ u32 reg_state_t::alloc_tag(bool reset) noexcept
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return ++g_tls_tag;
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}
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void reg_state_t::invalidate_if_created(u32 current_pc)
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{
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if (!is_const() && origin == current_pc)
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{
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tag = reg_state_t::alloc_tag();
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}
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}
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// Converge 2 register states to the same flow in execution
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template <usz N>
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static void merge(std::array<reg_state_t, N>& result, const std::array<reg_state_t, N>& lhs, const std::array<reg_state_t, N>& rhs)
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static void merge(std::array<reg_state_t, N>& result, const std::array<reg_state_t, N>& lhs, const std::array<reg_state_t, N>& rhs, u32 current_pc)
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{
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usz index = umax;
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@ -2738,7 +2747,7 @@ static void merge(std::array<reg_state_t, N>& result, const std::array<reg_state
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{
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index++;
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state = lhs[index].merge(rhs[index]);
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state = lhs[index].merge(rhs[index], current_pc);
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}
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}
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@ -2777,7 +2786,7 @@ struct block_reg_info
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static std::unique_ptr<block_reg_info> create(u32 pc) noexcept
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{
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auto ptr = new block_reg_info{ pc, reg_state_t::make_unknown<s_reg_max>() };
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auto ptr = new block_reg_info{ pc, reg_state_t::make_unknown<s_reg_max>(pc) };
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for (reg_state_t& f : ptr->local_state)
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{
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@ -4882,7 +4891,7 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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const bool should_search_patterns = target_count < 300u;
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// Treat start of function as an unknown value with tag (because it is)
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const reg_state_t start_program_count = reg_state_t::make_unknown();
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const reg_state_t start_program_count = reg_state_t::make_unknown(entry_point - 1);
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// Initialize
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reg_state_it.emplace_back(entry_point);
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@ -5375,10 +5384,20 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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vregs[reg] = reg_state_t::from_value(value);
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};
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const auto inherit_const_value = [&](u32 reg, bs_t<vf> flag, u32 value)
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const auto inherit_const_value = [&](u32 reg, const reg_state_t& ra, const reg_state_t& rb, u32 value, u32 pos)
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{
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flag -= vf::is_null;
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vregs[reg] = reg_state_t{flag, value, flag & vf::is_const ? u32{umax} : reg_state_t::alloc_tag()};
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if (ra.origin != rb.origin)
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{
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pos = reg_state_it[wi].pc;
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}
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else
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{
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pos = ra.origin;
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}
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const bs_t<vf> flag = (ra.flag & rb.flag) - vf::is_null;
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vregs[reg] = reg_state_t{flag, value, flag & vf::is_const ? u32{umax} : reg_state_t::alloc_tag(), 0, 0, pos};
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};
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const auto inherit_const_mask_value = [&](u32 reg, reg_state_t state, u32 mask_ones, u32 mask_zeroes)
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@ -5407,12 +5426,12 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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ensure(state.tag != umax);
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vregs[reg] = reg_state_t{vf::is_mask, 0, state.tag, ones, zeroes};
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vregs[reg] = reg_state_t{vf::is_mask, 0, state.tag, ones, zeroes, state.origin};
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};
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const auto unconst = [&](u32 reg)
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const auto unconst = [&](u32 reg, u32 pc)
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{
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vregs[reg] = {{}, {}, reg_state_t::alloc_tag()};
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vregs[reg] = reg_state_t::make_unknown(pc);
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};
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const auto add_block = [&](u32 target)
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@ -5467,6 +5486,14 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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}
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if (atomic16.active)
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{
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for (auto state : {&atomic16.lsa, &atomic16.ls, &atomic16.ls_offs})
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{
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state->invalidate_if_created(pos);
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}
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}
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const u32 data = std::bit_cast<be_t<u32>>(::at32(result.data, (pos - lsa) / 4));
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const auto op = spu_opcode_t{data};
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const auto type = g_spu_itype.decode(data);
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@ -5650,7 +5677,7 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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case MFC_Cmd:
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{
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const auto [af, av, atagg, _3, _5] = get_reg(op.rt);
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const auto [af, av, atagg, _3, _5, apc] = get_reg(op.rt);
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if (!is_pattern_match)
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{
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@ -5908,14 +5935,25 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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// Merge pattern attributes between different code paths, may cause detection of failures
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atomic16_t& existing = it->second;
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if (existing.lsa_pc != atomic16.lsa_pc || existing.put_pc != atomic16.put_pc || existing.lsa != atomic16.lsa)
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auto compare_tag_and_reg = [](std::pair<const reg_state_t*, u32> a, std::pair<const reg_state_t*, u32> b)
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{
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if (b.first->is_const() && a.first->is_const())
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{
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return a.first->compare_with_mask_indifference(*b.first, SPU_LS_MASK_1);
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}
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// Compare register source
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return a.second == b.second;
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};
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if (existing.lsa_pc != atomic16.lsa_pc || existing.put_pc != atomic16.put_pc || !existing.lsa.compare_with_mask_indifference(atomic16.lsa, SPU_LS_MASK_128))
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{
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// Register twice
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break_putllc16(22, atomic16.discard());
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break_putllc16(22, existing.discard());
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}
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if (existing.active && existing.ls_access && atomic16.ls_access && (!existing.ls.compare_with_mask_indifference(atomic16.ls, SPU_LS_MASK_1) || existing.ls_offs != atomic16.ls_offs))
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if (existing.active && existing.ls_access && atomic16.ls_access && (!compare_tag_and_reg({&existing.ls, existing.reg}, {&atomic16.ls, atomic16.reg}) || existing.ls_offs != atomic16.ls_offs || existing.reg2 != atomic16.reg2))
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{
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// Conflicting loads with stores in more than one code path
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break_putllc16(27, atomic16.set_invalid_ls(existing.ls_write || atomic16.ls_write));
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@ -5938,6 +5976,8 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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{
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// Propagate LS access
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existing.ls = atomic16.ls;
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existing.reg = atomic16.reg;
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existing.reg2 = atomic16.reg2;
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existing.ls_offs = atomic16.ls_offs;
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}
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@ -5989,7 +6029,7 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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if (invalidate)
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{
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unconst(op.rt);
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unconst(op.rt, pos);
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}
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break;
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@ -6068,7 +6108,7 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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// Unconst
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unconst(op.rt);
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unconst(op.rt, pos);
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break;
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}
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@ -6237,7 +6277,7 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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// Unconst
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unconst(op.rt);
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unconst(op.rt, pos);
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break;
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}
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case spu_itype::STQA:
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@ -6291,7 +6331,7 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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// Unconst
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unconst(op.rt);
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unconst(op.rt, pos);
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break;
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}
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@ -6371,14 +6411,14 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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// Unconst
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unconst(op.rt);
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unconst(op.rt, pos);
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break;
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}
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case spu_itype::HBR:
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{
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hbr_loc = spu_branch_target(pos, op.roh << 7 | op.rt);
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const auto [af, av, at, ao, az] = get_reg(op.ra);
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const auto [af, av, at, ao, az, apc] = get_reg(op.ra);
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hbr_tg = af & vf::is_const && !op.c ? av & 0x3fffc : -1;
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break;
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}
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@ -6443,9 +6483,13 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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break;
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}
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const auto [af, av, at, ao, az] = get_reg(op.ra);
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const auto [bf, bv, _2, _4, _6] = get_reg(op.rb);
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inherit_const_value(op.rt, af & bf, bv | av);
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const auto ra = get_reg(op.ra);
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const auto rb = get_reg(op.rb);
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const auto [af, av, at, ao, az, apc] = ra;
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const auto [bf, bv, bt, bo, bz, bpc] = rb;
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inherit_const_value(op.rt, ra, rb, av | bv, pos);
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break;
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}
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case spu_itype::XORI:
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@ -6456,8 +6500,11 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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break;
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}
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const auto [af, av, at, ao, az] = get_reg(op.ra);
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inherit_const_value(op.rt, af, av ^ op.si10);
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const auto ra = get_reg(op.ra);
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const auto [af, av, at, ao, az, apc] = ra;
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inherit_const_value(op.rt, ra, ra, av ^ op.si10, pos);
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break;
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}
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case spu_itype::XOR:
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@ -6468,16 +6515,24 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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break;
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}
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const auto [af, av, at, ao, az] = get_reg(op.ra);
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const auto [bf, bv, _2, _4, _6] = get_reg(op.rb);
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inherit_const_value(op.rt, af & bf, bv ^ av);
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const auto ra = get_reg(op.ra);
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const auto rb = get_reg(op.rb);
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const auto [af, av, at, ao, az, apc] = ra;
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const auto [bf, bv, bt, bo, bz, bpc] = rb;
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inherit_const_value(op.rt, ra, rb, bv ^ av, pos);
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break;
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}
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case spu_itype::NOR:
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{
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const auto [af, av, at, ao, az] = get_reg(op.ra);
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const auto [bf, bv, _2, _4, _6] = get_reg(op.rb);
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inherit_const_value(op.rt, af & bf, ~(bv | av));
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const auto ra = get_reg(op.ra);
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const auto rb = get_reg(op.rb);
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const auto [af, av, at, ao, az, apc] = ra;
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const auto [bf, bv, bt, bo, bz, bpc] = rb;
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inherit_const_value(op.rt, ra, rb, ~(bv | av), pos);
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break;
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}
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case spu_itype::ANDI:
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@ -6494,9 +6549,13 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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break;
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}
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const auto [af, av, at, ao, az] = get_reg(op.ra);
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const auto [bf, bv, _2, _4, _6] = get_reg(op.rb);
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inherit_const_value(op.rt, af & bf, bv & av);
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const auto ra = get_reg(op.ra);
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const auto rb = get_reg(op.rb);
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const auto [af, av, at, ao, az, apc] = ra;
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const auto [bf, bv, bt, bo, bz, bpc] = rb;
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inherit_const_value(op.rt, ra, rb, bv & av, pos);
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break;
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}
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case spu_itype::AI:
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@ -6508,9 +6567,9 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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const auto ra = get_reg(op.ra);
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const auto [af, av, at, ao, az] = ra;
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const auto [af, av, at, ao, az, apc] = ra;
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inherit_const_value(op.rt, af, av + op.si10);
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inherit_const_value(op.rt, ra, ra, av + op.si10, pos);
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if (u32 mask = ra.get_known_zeroes() & ~op.si10; mask & 1)
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{
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@ -6525,10 +6584,10 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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const auto ra = get_reg(op.ra);
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const auto rb = get_reg(op.rb);
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const auto [af, av, at, ao, az] = ra;
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const auto [bf, bv, bt, bo, bz] = rb;
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const auto [af, av, at, ao, az, apc] = ra;
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const auto [bf, bv, bt, bo, bz, bpc] = rb;
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inherit_const_value(op.rt, af & bf, bv + av);
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inherit_const_value(op.rt, ra, rb, bv + av, pos);
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if (u32 mask = ra.get_known_zeroes() & rb.get_known_zeroes(); mask & 1)
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{
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@ -6540,8 +6599,10 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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}
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case spu_itype::SFI:
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{
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const auto [af, av, at, ao, az] = get_reg(op.ra);
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inherit_const_value(op.rt, af, op.si10 - av);
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const auto ra = get_reg(op.ra);
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const auto [af, av, at, ao, az, apc] = get_reg(op.ra);
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inherit_const_value(op.rt, ra, ra, op.si10 - av, pos);
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break;
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}
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case spu_itype::SF:
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@ -6549,10 +6610,10 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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const auto ra = get_reg(op.ra);
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const auto rb = get_reg(op.rb);
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const auto [af, av, at, ao, az] = ra;
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const auto [bf, bv, bt, bo, bz] = rb;
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const auto [af, av, at, ao, az, apc] = ra;
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const auto [bf, bv, bt, bo, bz, bpc] = rb;
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inherit_const_value(op.rt, af & bf, bv - av);
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inherit_const_value(op.rt, ra, rb, bv - av, pos);
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if (u32 mask = ra.get_known_zeroes() & rb.get_known_zeroes(); mask & 1)
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{
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@ -6588,8 +6649,10 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
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break;
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}
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const auto [af, av, at, ao, az] = get_reg(op.ra);
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inherit_const_value(op.rt, af, av >> ((0 - op.i7) & 0x1f));
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const auto ra = get_reg(op.ra);
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const auto [af, av, at, ao, az, apc] = get_reg(op.ra);
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inherit_const_value(op.rt, ra, ra, av >> ((0 - op.i7) & 0x1f), pos);
|
||||
break;
|
||||
}
|
||||
case spu_itype::SHLI:
|
||||
|
|
@ -6606,8 +6669,10 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
|
|||
break;
|
||||
}
|
||||
|
||||
const auto [af, av, at, ao, az] = get_reg(op.ra);
|
||||
inherit_const_value(op.rt, af, av << (op.i7 & 0x1f));
|
||||
const auto ra = get_reg(op.ra);
|
||||
const auto [af, av, at, ao, az, apc] = ra;
|
||||
|
||||
inherit_const_value(op.rt, ra, ra, av << (op.i7 & 0x1f), pos);
|
||||
break;
|
||||
}
|
||||
case spu_itype::SELB:
|
||||
|
|
@ -6616,7 +6681,7 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
|
|||
const auto rb = get_reg(op.rb);
|
||||
|
||||
// Ignore RC, perform a value merge which also respect bitwise information
|
||||
vregs[op.rt4] = ra.merge(rb);
|
||||
vregs[op.rt4] = ra.merge(rb, pos);
|
||||
break;
|
||||
}
|
||||
case spu_itype::SHLQBYI:
|
||||
|
|
@ -6641,7 +6706,49 @@ spu_program spu_recompiler_base::analyse(const be_t<u32>* ls, u32 entry_point, s
|
|||
if (!(type & spu_itype::zregmod))
|
||||
{
|
||||
const u32 op_rt = type & spu_itype::_quadrop ? +op.rt4 : +op.rt;
|
||||
unconst(op_rt);
|
||||
|
||||
u32 ra = s_reg_max, rb = s_reg_max, rc = s_reg_max;
|
||||
|
||||
if (m_use_ra.test(pos / 4))
|
||||
{
|
||||
ra = op.ra;
|
||||
}
|
||||
|
||||
if (m_use_rb.test(pos / 4))
|
||||
{
|
||||
rb = op.rb;
|
||||
}
|
||||
|
||||
if (type & spu_itype::_quadrop && m_use_rc.test(pos / 4))
|
||||
{
|
||||
rc = op.rc;
|
||||
}
|
||||
|
||||
u32 reg_pos = SPU_LS_SIZE;
|
||||
|
||||
for (u32 reg : {ra, rb, rc})
|
||||
{
|
||||
if (reg != s_reg_max)
|
||||
{
|
||||
if (reg_pos == SPU_LS_SIZE)
|
||||
{
|
||||
reg = vregs[reg].origin;
|
||||
}
|
||||
else if (reg_pos != vregs[reg].origin)
|
||||
{
|
||||
const u32 block_start = reg_state_it[wi].pc;
|
||||
|
||||
// if (vregs[reg].origin >= block_start && vregs[reg].origin <= pos)
|
||||
// {
|
||||
// reg_pos = std::max<u32>(vregs[reg].origin, reg_pos);
|
||||
// }
|
||||
reg_pos = block_start;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
unconst(op_rt, reg_pos == SPU_LS_SIZE ? pos : reg_pos);
|
||||
}
|
||||
|
||||
break;
|
||||
|
|
@ -7714,7 +7821,7 @@ std::array<reg_state_t, s_reg_max>& block_reg_info::evaluate_start_state(const s
|
|||
}
|
||||
else
|
||||
{
|
||||
merge(res_state, res_state, *arg_state);
|
||||
merge(res_state, res_state, *arg_state, it->block_pc);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -208,6 +208,7 @@ public:
|
|||
u32 tag = umax;
|
||||
u32 known_ones{};
|
||||
u32 known_zeroes{};
|
||||
u32 origin = SPU_LS_SIZE;
|
||||
|
||||
bool is_const() const;
|
||||
|
||||
|
|
@ -222,21 +223,33 @@ public:
|
|||
bool compare_with_mask_indifference(u32 imm, u32 mask_bits) const;
|
||||
bool unequal_with_mask_indifference(const reg_state_t& r, u32 mask_bits) const;
|
||||
|
||||
// Convert constant-based value to mask-based value
|
||||
reg_state_t downgrade() const;
|
||||
reg_state_t merge(const reg_state_t& rhs) const;
|
||||
|
||||
// Connect two register states between different blocks
|
||||
reg_state_t merge(const reg_state_t& rhs, u32 current_pc) const;
|
||||
|
||||
// Override value with newer value if needed
|
||||
reg_state_t build_on_top_of(const reg_state_t& rhs) const;
|
||||
|
||||
// Get known zeroes mask
|
||||
u32 get_known_zeroes() const;
|
||||
|
||||
// Get known ones mask
|
||||
u32 get_known_ones() const;
|
||||
|
||||
// Invalidate value if non-constant and reached the point in history of its creation
|
||||
void invalidate_if_created(u32 current_pc);
|
||||
|
||||
template <usz Count = 1>
|
||||
static std::conditional_t<Count == 1, reg_state_t, std::array<reg_state_t, Count>> make_unknown() noexcept
|
||||
static std::conditional_t<Count == 1, reg_state_t, std::array<reg_state_t, Count>> make_unknown(u32 pc) noexcept
|
||||
{
|
||||
if constexpr (Count == 1)
|
||||
{
|
||||
reg_state_t v{};
|
||||
v.tag = alloc_tag();
|
||||
v.flag = {};
|
||||
v.origin = pc;
|
||||
return v;
|
||||
}
|
||||
else
|
||||
|
|
@ -245,7 +258,7 @@ public:
|
|||
|
||||
for (reg_state_t& state : result)
|
||||
{
|
||||
state = make_unknown<1>();
|
||||
state = make_unknown<1>(pc);
|
||||
}
|
||||
|
||||
return result;
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue