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author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-02-16 08:10:22 +0100 |
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committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-23 03:51:22 +0200 |
commit | b5d7279d878211654b4abb165d94af763a365f47 (patch) | |
tree | 9b3a7b6e9d7d2b8945fe87d27ff75f1712ef06aa /src/shader_recompiler/ir_opt/global_memory_to_storage_buffer_pass.cpp | |
parent | shader: Improve object pool (diff) | |
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Diffstat (limited to 'src/shader_recompiler/ir_opt/global_memory_to_storage_buffer_pass.cpp')
-rw-r--r-- | src/shader_recompiler/ir_opt/global_memory_to_storage_buffer_pass.cpp | 110 |
1 files changed, 62 insertions, 48 deletions
diff --git a/src/shader_recompiler/ir_opt/global_memory_to_storage_buffer_pass.cpp b/src/shader_recompiler/ir_opt/global_memory_to_storage_buffer_pass.cpp index b40c0c57b..bf230a850 100644 --- a/src/shader_recompiler/ir_opt/global_memory_to_storage_buffer_pass.cpp +++ b/src/shader_recompiler/ir_opt/global_memory_to_storage_buffer_pass.cpp @@ -28,7 +28,8 @@ struct StorageBufferAddr { /// Block iterator to a global memory instruction and the storage buffer it uses struct StorageInst { StorageBufferAddr storage_buffer; - IR::Block::iterator inst; + IR::Inst* inst; + IR::Block* block; }; /// Bias towards a certain range of constant buffers when looking for storage buffers @@ -41,7 +42,7 @@ struct Bias { using StorageBufferSet = boost::container::flat_set<StorageBufferAddr, std::less<StorageBufferAddr>, boost::container::small_vector<StorageBufferAddr, 16>>; -using StorageInstVector = boost::container::small_vector<StorageInst, 32>; +using StorageInstVector = boost::container::small_vector<StorageInst, 24>; /// Returns true when the instruction is a global memory instruction bool IsGlobalMemory(const IR::Inst& inst) { @@ -109,23 +110,22 @@ bool MeetsBias(const StorageBufferAddr& storage_buffer, const Bias& bias) noexce } /// Discards a global memory operation, reads return zero and writes are ignored -void DiscardGlobalMemory(IR::Block& block, IR::Block::iterator inst) { +void DiscardGlobalMemory(IR::Block& block, IR::Inst& inst) { + IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; const IR::Value zero{u32{0}}; - switch (inst->Opcode()) { + switch (inst.Opcode()) { case IR::Opcode::LoadGlobalS8: case IR::Opcode::LoadGlobalU8: case IR::Opcode::LoadGlobalS16: case IR::Opcode::LoadGlobalU16: case IR::Opcode::LoadGlobal32: - inst->ReplaceUsesWith(zero); + inst.ReplaceUsesWith(zero); break; case IR::Opcode::LoadGlobal64: - inst->ReplaceUsesWith(IR::Value{ - &*block.PrependNewInst(inst, IR::Opcode::CompositeConstructU32x2, {zero, zero})}); + inst.ReplaceUsesWith(IR::Value{ir.CompositeConstruct(zero, zero)}); break; case IR::Opcode::LoadGlobal128: - inst->ReplaceUsesWith(IR::Value{&*block.PrependNewInst( - inst, IR::Opcode::CompositeConstructU32x4, {zero, zero, zero, zero})}); + inst.ReplaceUsesWith(IR::Value{ir.CompositeConstruct(zero, zero, zero, zero)}); break; case IR::Opcode::WriteGlobalS8: case IR::Opcode::WriteGlobalU8: @@ -134,11 +134,10 @@ void DiscardGlobalMemory(IR::Block& block, IR::Block::iterator inst) { case IR::Opcode::WriteGlobal32: case IR::Opcode::WriteGlobal64: case IR::Opcode::WriteGlobal128: - inst->Invalidate(); + inst.Invalidate(); break; default: - throw LogicError("Invalid opcode to discard its global memory operation {}", - inst->Opcode()); + throw LogicError("Invalid opcode to discard its global memory operation {}", inst.Opcode()); } } @@ -232,8 +231,8 @@ std::optional<StorageBufferAddr> Track(const IR::Value& value, const Bias* bias) } /// Collects the storage buffer used by a global memory instruction and the instruction itself -void CollectStorageBuffers(IR::Block& block, IR::Block::iterator inst, - StorageBufferSet& storage_buffer_set, StorageInstVector& to_replace) { +void CollectStorageBuffers(IR::Block& block, IR::Inst& inst, StorageBufferSet& storage_buffer_set, + StorageInstVector& to_replace) { // NVN puts storage buffers in a specific range, we have to bias towards these addresses to // avoid getting false positives static constexpr Bias nvn_bias{ @@ -241,19 +240,13 @@ void CollectStorageBuffers(IR::Block& block, IR::Block::iterator inst, .offset_begin{0x110}, .offset_end{0x610}, }; - // First try to find storage buffers in the NVN address - const IR::U64 addr{inst->Arg(0)}; - if (addr.IsImmediate()) { - // Immediate addresses can't be lowered to a storage buffer - DiscardGlobalMemory(block, inst); - return; - } // Track the low address of the instruction - const std::optional<LowAddrInfo> low_addr_info{TrackLowAddress(addr.InstRecursive())}; + const std::optional<LowAddrInfo> low_addr_info{TrackLowAddress(&inst)}; if (!low_addr_info) { DiscardGlobalMemory(block, inst); return; } + // First try to find storage buffers in the NVN address const IR::U32 low_addr{low_addr_info->value}; std::optional<StorageBufferAddr> storage_buffer{Track(low_addr, &nvn_bias)}; if (!storage_buffer) { @@ -269,21 +262,22 @@ void CollectStorageBuffers(IR::Block& block, IR::Block::iterator inst, storage_buffer_set.insert(*storage_buffer); to_replace.push_back(StorageInst{ .storage_buffer{*storage_buffer}, - .inst{inst}, + .inst{&inst}, + .block{&block}, }); } /// Returns the offset in indices (not bytes) for an equivalent storage instruction -IR::U32 StorageOffset(IR::Block& block, IR::Block::iterator inst, StorageBufferAddr buffer) { - IR::IREmitter ir{block, inst}; +IR::U32 StorageOffset(IR::Block& block, IR::Inst& inst, StorageBufferAddr buffer) { + IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; IR::U32 offset; - if (const std::optional<LowAddrInfo> low_addr{TrackLowAddress(&*inst)}) { + if (const std::optional<LowAddrInfo> low_addr{TrackLowAddress(&inst)}) { offset = low_addr->value; if (low_addr->imm_offset != 0) { offset = ir.IAdd(offset, ir.Imm32(low_addr->imm_offset)); } } else { - offset = ir.ConvertU(32, IR::U64{inst->Arg(0)}); + offset = ir.ConvertU(32, IR::U64{inst.Arg(0)}); } // Subtract the least significant 32 bits from the guest offset. The result is the storage // buffer offset in bytes. @@ -292,25 +286,27 @@ IR::U32 StorageOffset(IR::Block& block, IR::Block::iterator inst, StorageBufferA } /// Replace a global memory load instruction with its storage buffer equivalent -void ReplaceLoad(IR::Block& block, IR::Block::iterator inst, const IR::U32& storage_index, +void ReplaceLoad(IR::Block& block, IR::Inst& inst, const IR::U32& storage_index, const IR::U32& offset) { - const IR::Opcode new_opcode{GlobalToStorage(inst->Opcode())}; - const IR::Value value{&*block.PrependNewInst(inst, new_opcode, {storage_index, offset})}; - inst->ReplaceUsesWith(value); + const IR::Opcode new_opcode{GlobalToStorage(inst.Opcode())}; + const auto it{IR::Block::InstructionList::s_iterator_to(inst)}; + const IR::Value value{&*block.PrependNewInst(it, new_opcode, {storage_index, offset})}; + inst.ReplaceUsesWith(value); } /// Replace a global memory write instruction with its storage buffer equivalent -void ReplaceWrite(IR::Block& block, IR::Block::iterator inst, const IR::U32& storage_index, +void ReplaceWrite(IR::Block& block, IR::Inst& inst, const IR::U32& storage_index, const IR::U32& offset) { - const IR::Opcode new_opcode{GlobalToStorage(inst->Opcode())}; - block.PrependNewInst(inst, new_opcode, {storage_index, offset, inst->Arg(1)}); - inst->Invalidate(); + const IR::Opcode new_opcode{GlobalToStorage(inst.Opcode())}; + const auto it{IR::Block::InstructionList::s_iterator_to(inst)}; + block.PrependNewInst(it, new_opcode, {storage_index, offset, inst.Arg(1)}); + inst.Invalidate(); } /// Replace a global memory instruction with its storage buffer equivalent -void Replace(IR::Block& block, IR::Block::iterator inst, const IR::U32& storage_index, +void Replace(IR::Block& block, IR::Inst& inst, const IR::U32& storage_index, const IR::U32& offset) { - switch (inst->Opcode()) { + switch (inst.Opcode()) { case IR::Opcode::LoadGlobalS8: case IR::Opcode::LoadGlobalU8: case IR::Opcode::LoadGlobalS16: @@ -328,26 +324,44 @@ void Replace(IR::Block& block, IR::Block::iterator inst, const IR::U32& storage_ case IR::Opcode::WriteGlobal128: return ReplaceWrite(block, inst, storage_index, offset); default: - throw InvalidArgument("Invalid global memory opcode {}", inst->Opcode()); + throw InvalidArgument("Invalid global memory opcode {}", inst.Opcode()); } } } // Anonymous namespace -void GlobalMemoryToStorageBufferPass(IR::Block& block) { +void GlobalMemoryToStorageBufferPass(IR::Program& program) { StorageBufferSet storage_buffers; StorageInstVector to_replace; - for (IR::Block::iterator inst{block.begin()}; inst != block.end(); ++inst) { - if (!IsGlobalMemory(*inst)) { - continue; + for (IR::Function& function : program.functions) { + for (IR::Block* const block : function.post_order_blocks) { + for (IR::Inst& inst : block->Instructions()) { + if (!IsGlobalMemory(inst)) { + continue; + } + CollectStorageBuffers(*block, inst, storage_buffers, to_replace); + } } - CollectStorageBuffers(block, inst, storage_buffers, to_replace); } - for (const auto [storage_buffer, inst] : to_replace) { - const auto it{storage_buffers.find(storage_buffer)}; - const IR::U32 storage_index{IR::Value{static_cast<u32>(storage_buffers.index_of(it))}}; - const IR::U32 offset{StorageOffset(block, inst, storage_buffer)}; - Replace(block, inst, storage_index, offset); + Info& info{program.info}; + u32 storage_index{}; + for (const StorageBufferAddr& storage_buffer : storage_buffers) { + info.storage_buffers_descriptors.push_back({ + .cbuf_index{storage_buffer.index}, + .cbuf_offset{storage_buffer.offset}, + .count{1}, + }); + info.storage_buffers[storage_index] = &info.storage_buffers_descriptors.back(); + ++storage_index; + } + for (const StorageInst& storage_inst : to_replace) { + const StorageBufferAddr storage_buffer{storage_inst.storage_buffer}; + const auto it{storage_buffers.find(storage_inst.storage_buffer)}; + const IR::U32 index{IR::Value{static_cast<u32>(storage_buffers.index_of(it))}}; + IR::Block* const block{storage_inst.block}; + IR::Inst* const inst{storage_inst.inst}; + const IR::U32 offset{StorageOffset(*block, *inst, storage_buffer)}; + Replace(*block, *inst, index, offset); } } |