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Diffstat (limited to '')
| -rw-r--r-- | src/shader_recompiler/ir_opt/constant_propagation_pass.cpp | 610 |
1 files changed, 610 insertions, 0 deletions
diff --git a/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp new file mode 100644 index 000000000..8dd6d6c2c --- /dev/null +++ b/src/shader_recompiler/ir_opt/constant_propagation_pass.cpp @@ -0,0 +1,610 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <algorithm> +#include <tuple> +#include <type_traits> + +#include "common/bit_cast.h" +#include "common/bit_util.h" +#include "shader_recompiler/exception.h" +#include "shader_recompiler/frontend/ir/ir_emitter.h" +#include "shader_recompiler/frontend/ir/value.h" +#include "shader_recompiler/ir_opt/passes.h" + +namespace Shader::Optimization { +namespace { +// Metaprogramming stuff to get arguments information out of a lambda +template <typename Func> +struct LambdaTraits : LambdaTraits<decltype(&std::remove_reference_t<Func>::operator())> {}; + +template <typename ReturnType, typename LambdaType, typename... Args> +struct LambdaTraits<ReturnType (LambdaType::*)(Args...) const> { + template <size_t I> + using ArgType = std::tuple_element_t<I, std::tuple<Args...>>; + + static constexpr size_t NUM_ARGS{sizeof...(Args)}; +}; + +template <typename T> +[[nodiscard]] T Arg(const IR::Value& value) { + if constexpr (std::is_same_v<T, bool>) { + return value.U1(); + } else if constexpr (std::is_same_v<T, u32>) { + return value.U32(); + } else if constexpr (std::is_same_v<T, s32>) { + return static_cast<s32>(value.U32()); + } else if constexpr (std::is_same_v<T, f32>) { + return value.F32(); + } else if constexpr (std::is_same_v<T, u64>) { + return value.U64(); + } +} + +template <typename T, typename ImmFn> +bool FoldCommutative(IR::Inst& inst, ImmFn&& imm_fn) { + const IR::Value lhs{inst.Arg(0)}; + const IR::Value rhs{inst.Arg(1)}; + + const bool is_lhs_immediate{lhs.IsImmediate()}; + const bool is_rhs_immediate{rhs.IsImmediate()}; + + if (is_lhs_immediate && is_rhs_immediate) { + const auto result{imm_fn(Arg<T>(lhs), Arg<T>(rhs))}; + inst.ReplaceUsesWith(IR::Value{result}); + return false; + } + if (is_lhs_immediate && !is_rhs_immediate) { + IR::Inst* const rhs_inst{rhs.InstRecursive()}; + if (rhs_inst->GetOpcode() == inst.GetOpcode() && rhs_inst->Arg(1).IsImmediate()) { + const auto combined{imm_fn(Arg<T>(lhs), Arg<T>(rhs_inst->Arg(1)))}; + inst.SetArg(0, rhs_inst->Arg(0)); + inst.SetArg(1, IR::Value{combined}); + } else { + // Normalize + inst.SetArg(0, rhs); + inst.SetArg(1, lhs); + } + } + if (!is_lhs_immediate && is_rhs_immediate) { + const IR::Inst* const lhs_inst{lhs.InstRecursive()}; + if (lhs_inst->GetOpcode() == inst.GetOpcode() && lhs_inst->Arg(1).IsImmediate()) { + const auto combined{imm_fn(Arg<T>(rhs), Arg<T>(lhs_inst->Arg(1)))}; + inst.SetArg(0, lhs_inst->Arg(0)); + inst.SetArg(1, IR::Value{combined}); + } + } + return true; +} + +template <typename Func> +bool FoldWhenAllImmediates(IR::Inst& inst, Func&& func) { + if (!inst.AreAllArgsImmediates() || inst.HasAssociatedPseudoOperation()) { + return false; + } + using Indices = std::make_index_sequence<LambdaTraits<decltype(func)>::NUM_ARGS>; + inst.ReplaceUsesWith(EvalImmediates(inst, func, Indices{})); + return true; +} + +void FoldGetRegister(IR::Inst& inst) { + if (inst.Arg(0).Reg() == IR::Reg::RZ) { + inst.ReplaceUsesWith(IR::Value{u32{0}}); + } +} + +void FoldGetPred(IR::Inst& inst) { + if (inst.Arg(0).Pred() == IR::Pred::PT) { + inst.ReplaceUsesWith(IR::Value{true}); + } +} + +/// Replaces the pattern generated by two XMAD multiplications +bool FoldXmadMultiply(IR::Block& block, IR::Inst& inst) { + /* + * We are looking for this pattern: + * %rhs_bfe = BitFieldUExtract %factor_a, #0, #16 + * %rhs_mul = IMul32 %rhs_bfe, %factor_b + * %lhs_bfe = BitFieldUExtract %factor_a, #16, #16 + * %rhs_mul = IMul32 %lhs_bfe, %factor_b + * %lhs_shl = ShiftLeftLogical32 %rhs_mul, #16 + * %result = IAdd32 %lhs_shl, %rhs_mul + * + * And replacing it with + * %result = IMul32 %factor_a, %factor_b + * + * This optimization has been proven safe by LLVM and MSVC. + */ + const IR::Value lhs_arg{inst.Arg(0)}; + const IR::Value rhs_arg{inst.Arg(1)}; + if (lhs_arg.IsImmediate() || rhs_arg.IsImmediate()) { + return false; + } + IR::Inst* const lhs_shl{lhs_arg.InstRecursive()}; + if (lhs_shl->GetOpcode() != IR::Opcode::ShiftLeftLogical32 || + lhs_shl->Arg(1) != IR::Value{16U}) { + return false; + } + if (lhs_shl->Arg(0).IsImmediate()) { + return false; + } + IR::Inst* const lhs_mul{lhs_shl->Arg(0).InstRecursive()}; + IR::Inst* const rhs_mul{rhs_arg.InstRecursive()}; + if (lhs_mul->GetOpcode() != IR::Opcode::IMul32 || rhs_mul->GetOpcode() != IR::Opcode::IMul32) { + return false; + } + if (lhs_mul->Arg(1).Resolve() != rhs_mul->Arg(1).Resolve()) { + return false; + } + const IR::U32 factor_b{lhs_mul->Arg(1)}; + if (lhs_mul->Arg(0).IsImmediate() || rhs_mul->Arg(0).IsImmediate()) { + return false; + } + IR::Inst* const lhs_bfe{lhs_mul->Arg(0).InstRecursive()}; + IR::Inst* const rhs_bfe{rhs_mul->Arg(0).InstRecursive()}; + if (lhs_bfe->GetOpcode() != IR::Opcode::BitFieldUExtract) { + return false; + } + if (rhs_bfe->GetOpcode() != IR::Opcode::BitFieldUExtract) { + return false; + } + if (lhs_bfe->Arg(1) != IR::Value{16U} || lhs_bfe->Arg(2) != IR::Value{16U}) { + return false; + } + if (rhs_bfe->Arg(1) != IR::Value{0U} || rhs_bfe->Arg(2) != IR::Value{16U}) { + return false; + } + if (lhs_bfe->Arg(0).Resolve() != rhs_bfe->Arg(0).Resolve()) { + return false; + } + const IR::U32 factor_a{lhs_bfe->Arg(0)}; + IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; + inst.ReplaceUsesWith(ir.IMul(factor_a, factor_b)); + return true; +} + +template <typename T> +void FoldAdd(IR::Block& block, IR::Inst& inst) { + if (inst.HasAssociatedPseudoOperation()) { + return; + } + if (!FoldCommutative<T>(inst, [](T a, T b) { return a + b; })) { + return; + } + const IR::Value rhs{inst.Arg(1)}; + if (rhs.IsImmediate() && Arg<T>(rhs) == 0) { + inst.ReplaceUsesWith(inst.Arg(0)); + return; + } + if constexpr (std::is_same_v<T, u32>) { + if (FoldXmadMultiply(block, inst)) { + return; + } + } +} + +void FoldISub32(IR::Inst& inst) { + if (FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a - b; })) { + return; + } + if (inst.Arg(0).IsImmediate() || inst.Arg(1).IsImmediate()) { + return; + } + // ISub32 is generally used to subtract two constant buffers, compare and replace this with + // zero if they equal. + const auto equal_cbuf{[](IR::Inst* a, IR::Inst* b) { + return a->GetOpcode() == IR::Opcode::GetCbufU32 && + b->GetOpcode() == IR::Opcode::GetCbufU32 && a->Arg(0) == b->Arg(0) && + a->Arg(1) == b->Arg(1); + }}; + IR::Inst* op_a{inst.Arg(0).InstRecursive()}; + IR::Inst* op_b{inst.Arg(1).InstRecursive()}; + if (equal_cbuf(op_a, op_b)) { + inst.ReplaceUsesWith(IR::Value{u32{0}}); + return; + } + // It's also possible a value is being added to a cbuf and then subtracted + if (op_b->GetOpcode() == IR::Opcode::IAdd32) { + // Canonicalize local variables to simplify the following logic + std::swap(op_a, op_b); + } + if (op_b->GetOpcode() != IR::Opcode::GetCbufU32) { + return; + } + IR::Inst* const inst_cbuf{op_b}; + if (op_a->GetOpcode() != IR::Opcode::IAdd32) { + return; + } + IR::Value add_op_a{op_a->Arg(0)}; + IR::Value add_op_b{op_a->Arg(1)}; + if (add_op_b.IsImmediate()) { + // Canonicalize + std::swap(add_op_a, add_op_b); + } + if (add_op_b.IsImmediate()) { + return; + } + IR::Inst* const add_cbuf{add_op_b.InstRecursive()}; + if (equal_cbuf(add_cbuf, inst_cbuf)) { + inst.ReplaceUsesWith(add_op_a); + } +} + +void FoldSelect(IR::Inst& inst) { + const IR::Value cond{inst.Arg(0)}; + if (cond.IsImmediate()) { + inst.ReplaceUsesWith(cond.U1() ? inst.Arg(1) : inst.Arg(2)); + } +} + +void FoldFPMul32(IR::Inst& inst) { + const auto control{inst.Flags<IR::FpControl>()}; + if (control.no_contraction) { + return; + } + // Fold interpolation operations + const IR::Value lhs_value{inst.Arg(0)}; + const IR::Value rhs_value{inst.Arg(1)}; + if (lhs_value.IsImmediate() || rhs_value.IsImmediate()) { + return; + } + IR::Inst* const lhs_op{lhs_value.InstRecursive()}; + IR::Inst* const rhs_op{rhs_value.InstRecursive()}; + if (lhs_op->GetOpcode() != IR::Opcode::FPMul32 || + rhs_op->GetOpcode() != IR::Opcode::FPRecip32) { + return; + } + const IR::Value recip_source{rhs_op->Arg(0)}; + const IR::Value lhs_mul_source{lhs_op->Arg(1).Resolve()}; + if (recip_source.IsImmediate() || lhs_mul_source.IsImmediate()) { + return; + } + IR::Inst* const attr_a{recip_source.InstRecursive()}; + IR::Inst* const attr_b{lhs_mul_source.InstRecursive()}; + if (attr_a->GetOpcode() != IR::Opcode::GetAttribute || + attr_b->GetOpcode() != IR::Opcode::GetAttribute) { + return; + } + if (attr_a->Arg(0).Attribute() == attr_b->Arg(0).Attribute()) { + inst.ReplaceUsesWith(lhs_op->Arg(0)); + } +} + +void FoldLogicalAnd(IR::Inst& inst) { + if (!FoldCommutative<bool>(inst, [](bool a, bool b) { return a && b; })) { + return; + } + const IR::Value rhs{inst.Arg(1)}; + if (rhs.IsImmediate()) { + if (rhs.U1()) { + inst.ReplaceUsesWith(inst.Arg(0)); + } else { + inst.ReplaceUsesWith(IR::Value{false}); + } + } +} + +void FoldLogicalOr(IR::Inst& inst) { + if (!FoldCommutative<bool>(inst, [](bool a, bool b) { return a || b; })) { + return; + } + const IR::Value rhs{inst.Arg(1)}; + if (rhs.IsImmediate()) { + if (rhs.U1()) { + inst.ReplaceUsesWith(IR::Value{true}); + } else { + inst.ReplaceUsesWith(inst.Arg(0)); + } + } +} + +void FoldLogicalNot(IR::Inst& inst) { + const IR::U1 value{inst.Arg(0)}; + if (value.IsImmediate()) { + inst.ReplaceUsesWith(IR::Value{!value.U1()}); + return; + } + IR::Inst* const arg{value.InstRecursive()}; + if (arg->GetOpcode() == IR::Opcode::LogicalNot) { + inst.ReplaceUsesWith(arg->Arg(0)); + } +} + +template <IR::Opcode op, typename Dest, typename Source> +void FoldBitCast(IR::Inst& inst, IR::Opcode reverse) { + const IR::Value value{inst.Arg(0)}; + if (value.IsImmediate()) { + inst.ReplaceUsesWith(IR::Value{Common::BitCast<Dest>(Arg<Source>(value))}); + return; + } + IR::Inst* const arg_inst{value.InstRecursive()}; + if (arg_inst->GetOpcode() == reverse) { + inst.ReplaceUsesWith(arg_inst->Arg(0)); + return; + } + if constexpr (op == IR::Opcode::BitCastF32U32) { + if (arg_inst->GetOpcode() == IR::Opcode::GetCbufU32) { + // Replace the bitcast with a typed constant buffer read + inst.ReplaceOpcode(IR::Opcode::GetCbufF32); + inst.SetArg(0, arg_inst->Arg(0)); + inst.SetArg(1, arg_inst->Arg(1)); + return; + } + } +} + +void FoldInverseFunc(IR::Inst& inst, IR::Opcode reverse) { + const IR::Value value{inst.Arg(0)}; + if (value.IsImmediate()) { + return; + } + IR::Inst* const arg_inst{value.InstRecursive()}; + if (arg_inst->GetOpcode() == reverse) { + inst.ReplaceUsesWith(arg_inst->Arg(0)); + return; + } +} + +template <typename Func, size_t... I> +IR::Value EvalImmediates(const IR::Inst& inst, Func&& func, std::index_sequence<I...>) { + using Traits = LambdaTraits<decltype(func)>; + return IR::Value{func(Arg<typename Traits::template ArgType<I>>(inst.Arg(I))...)}; +} + +std::optional<IR::Value> FoldCompositeExtractImpl(IR::Value inst_value, IR::Opcode insert, + IR::Opcode construct, u32 first_index) { + IR::Inst* const inst{inst_value.InstRecursive()}; + if (inst->GetOpcode() == construct) { + return inst->Arg(first_index); + } + if (inst->GetOpcode() != insert) { + return std::nullopt; + } + IR::Value value_index{inst->Arg(2)}; + if (!value_index.IsImmediate()) { + return std::nullopt; + } + const u32 second_index{value_index.U32()}; + if (first_index != second_index) { + IR::Value value_composite{inst->Arg(0)}; + if (value_composite.IsImmediate()) { + return std::nullopt; + } + return FoldCompositeExtractImpl(value_composite, insert, construct, first_index); + } + return inst->Arg(1); +} + +void FoldCompositeExtract(IR::Inst& inst, IR::Opcode construct, IR::Opcode insert) { + const IR::Value value_1{inst.Arg(0)}; + const IR::Value value_2{inst.Arg(1)}; + if (value_1.IsImmediate()) { + return; + } + if (!value_2.IsImmediate()) { + return; + } + const u32 first_index{value_2.U32()}; + const std::optional result{FoldCompositeExtractImpl(value_1, insert, construct, first_index)}; + if (!result) { + return; + } + inst.ReplaceUsesWith(*result); +} + +IR::Value GetThroughCast(IR::Value value, IR::Opcode expected_cast) { + if (value.IsImmediate()) { + return value; + } + IR::Inst* const inst{value.InstRecursive()}; + if (inst->GetOpcode() == expected_cast) { + return inst->Arg(0).Resolve(); + } + return value; +} + +void FoldFSwizzleAdd(IR::Block& block, IR::Inst& inst) { + const IR::Value swizzle{inst.Arg(2)}; + if (!swizzle.IsImmediate()) { + return; + } + const IR::Value value_1{GetThroughCast(inst.Arg(0).Resolve(), IR::Opcode::BitCastF32U32)}; + const IR::Value value_2{GetThroughCast(inst.Arg(1).Resolve(), IR::Opcode::BitCastF32U32)}; + if (value_1.IsImmediate()) { + return; + } + const u32 swizzle_value{swizzle.U32()}; + if (swizzle_value != 0x99 && swizzle_value != 0xA5) { + return; + } + IR::Inst* const inst2{value_1.InstRecursive()}; + if (inst2->GetOpcode() != IR::Opcode::ShuffleButterfly) { + return; + } + const IR::Value value_3{GetThroughCast(inst2->Arg(0).Resolve(), IR::Opcode::BitCastU32F32)}; + if (value_2 != value_3) { + return; + } + const IR::Value index{inst2->Arg(1)}; + const IR::Value clamp{inst2->Arg(2)}; + const IR::Value segmentation_mask{inst2->Arg(3)}; + if (!index.IsImmediate() || !clamp.IsImmediate() || !segmentation_mask.IsImmediate()) { + return; + } + if (clamp.U32() != 3 || segmentation_mask.U32() != 28) { + return; + } + if (swizzle_value == 0x99) { + // DPdxFine + if (index.U32() == 1) { + IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; + inst.ReplaceUsesWith(ir.DPdxFine(IR::F32{inst.Arg(1)})); + } + } else if (swizzle_value == 0xA5) { + // DPdyFine + if (index.U32() == 2) { + IR::IREmitter ir{block, IR::Block::InstructionList::s_iterator_to(inst)}; + inst.ReplaceUsesWith(ir.DPdyFine(IR::F32{inst.Arg(1)})); + } + } +} + +void ConstantPropagation(IR::Block& block, IR::Inst& inst) { + switch (inst.GetOpcode()) { + case IR::Opcode::GetRegister: + return FoldGetRegister(inst); + case IR::Opcode::GetPred: + return FoldGetPred(inst); + case IR::Opcode::IAdd32: + return FoldAdd<u32>(block, inst); + case IR::Opcode::ISub32: + return FoldISub32(inst); + case IR::Opcode::IMul32: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a * b; }); + return; + case IR::Opcode::ShiftRightArithmetic32: + FoldWhenAllImmediates(inst, [](s32 a, s32 b) { return static_cast<u32>(a >> b); }); + return; + case IR::Opcode::BitCastF32U32: + return FoldBitCast<IR::Opcode::BitCastF32U32, f32, u32>(inst, IR::Opcode::BitCastU32F32); + case IR::Opcode::BitCastU32F32: + return FoldBitCast<IR::Opcode::BitCastU32F32, u32, f32>(inst, IR::Opcode::BitCastF32U32); + case IR::Opcode::IAdd64: + return FoldAdd<u64>(block, inst); + case IR::Opcode::PackHalf2x16: + return FoldInverseFunc(inst, IR::Opcode::UnpackHalf2x16); + case IR::Opcode::UnpackHalf2x16: + return FoldInverseFunc(inst, IR::Opcode::PackHalf2x16); + case IR::Opcode::SelectU1: + case IR::Opcode::SelectU8: + case IR::Opcode::SelectU16: + case IR::Opcode::SelectU32: + case IR::Opcode::SelectU64: + case IR::Opcode::SelectF16: + case IR::Opcode::SelectF32: + case IR::Opcode::SelectF64: + return FoldSelect(inst); + case IR::Opcode::FPMul32: + return FoldFPMul32(inst); + case IR::Opcode::LogicalAnd: + return FoldLogicalAnd(inst); + case IR::Opcode::LogicalOr: + return FoldLogicalOr(inst); + case IR::Opcode::LogicalNot: + return FoldLogicalNot(inst); + case IR::Opcode::SLessThan: + FoldWhenAllImmediates(inst, [](s32 a, s32 b) { return a < b; }); + return; + case IR::Opcode::ULessThan: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a < b; }); + return; + case IR::Opcode::SLessThanEqual: + FoldWhenAllImmediates(inst, [](s32 a, s32 b) { return a <= b; }); + return; + case IR::Opcode::ULessThanEqual: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a <= b; }); + return; + case IR::Opcode::SGreaterThan: + FoldWhenAllImmediates(inst, [](s32 a, s32 b) { return a > b; }); + return; + case IR::Opcode::UGreaterThan: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a > b; }); + return; + case IR::Opcode::SGreaterThanEqual: + FoldWhenAllImmediates(inst, [](s32 a, s32 b) { return a >= b; }); + return; + case IR::Opcode::UGreaterThanEqual: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a >= b; }); + return; + case IR::Opcode::IEqual: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a == b; }); + return; + case IR::Opcode::INotEqual: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a != b; }); + return; + case IR::Opcode::BitwiseAnd32: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a & b; }); + return; + case IR::Opcode::BitwiseOr32: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a | b; }); + return; + case IR::Opcode::BitwiseXor32: + FoldWhenAllImmediates(inst, [](u32 a, u32 b) { return a ^ b; }); + return; + case IR::Opcode::BitFieldUExtract: + FoldWhenAllImmediates(inst, [](u32 base, u32 shift, u32 count) { + if (static_cast<size_t>(shift) + static_cast<size_t>(count) > 32) { + throw LogicError("Undefined result in {}({}, {}, {})", IR::Opcode::BitFieldUExtract, + base, shift, count); + } + return (base >> shift) & ((1U << count) - 1); + }); + return; + case IR::Opcode::BitFieldSExtract: + FoldWhenAllImmediates(inst, [](s32 base, u32 shift, u32 count) { + const size_t back_shift{static_cast<size_t>(shift) + static_cast<size_t>(count)}; + const size_t left_shift{32 - back_shift}; + const size_t right_shift{static_cast<size_t>(32 - count)}; + if (back_shift > 32 || left_shift >= 32 || right_shift >= 32) { + throw LogicError("Undefined result in {}({}, {}, {})", IR::Opcode::BitFieldSExtract, + base, shift, count); + } + return static_cast<u32>((base << left_shift) >> right_shift); + }); + return; + case IR::Opcode::BitFieldInsert: + FoldWhenAllImmediates(inst, [](u32 base, u32 insert, u32 offset, u32 bits) { + if (bits >= 32 || offset >= 32) { + throw LogicError("Undefined result in {}({}, {}, {}, {})", + IR::Opcode::BitFieldInsert, base, insert, offset, bits); + } + return (base & ~(~(~0u << bits) << offset)) | (insert << offset); + }); + return; + case IR::Opcode::CompositeExtractU32x2: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructU32x2, + IR::Opcode::CompositeInsertU32x2); + case IR::Opcode::CompositeExtractU32x3: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructU32x3, + IR::Opcode::CompositeInsertU32x3); + case IR::Opcode::CompositeExtractU32x4: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructU32x4, + IR::Opcode::CompositeInsertU32x4); + case IR::Opcode::CompositeExtractF32x2: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructF32x2, + IR::Opcode::CompositeInsertF32x2); + case IR::Opcode::CompositeExtractF32x3: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructF32x3, + IR::Opcode::CompositeInsertF32x3); + case IR::Opcode::CompositeExtractF32x4: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructF32x4, + IR::Opcode::CompositeInsertF32x4); + case IR::Opcode::CompositeExtractF16x2: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructF16x2, + IR::Opcode::CompositeInsertF16x2); + case IR::Opcode::CompositeExtractF16x3: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructF16x3, + IR::Opcode::CompositeInsertF16x3); + case IR::Opcode::CompositeExtractF16x4: + return FoldCompositeExtract(inst, IR::Opcode::CompositeConstructF16x4, + IR::Opcode::CompositeInsertF16x4); + case IR::Opcode::FSwizzleAdd: + return FoldFSwizzleAdd(block, inst); + default: + break; + } +} +} // Anonymous namespace + +void ConstantPropagationPass(IR::Program& program) { + const auto end{program.post_order_blocks.rend()}; + for (auto it = program.post_order_blocks.rbegin(); it != end; ++it) { + IR::Block* const block{*it}; + for (IR::Inst& inst : block->Instructions()) { + ConstantPropagation(*block, inst); + } + } +} + +} // namespace Shader::Optimization |