From 2bb7ea436dc74f812a8092201dc597ed58ff3c7a Mon Sep 17 00:00:00 2001 From: Liam Date: Sat, 10 Jun 2023 11:40:58 -0400 Subject: shader_recompiler: remove barriers in conditional control flow when device lacks support --- .../ir_opt/conditional_barrier_pass.cpp | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 src/shader_recompiler/ir_opt/conditional_barrier_pass.cpp (limited to 'src/shader_recompiler/ir_opt/conditional_barrier_pass.cpp') diff --git a/src/shader_recompiler/ir_opt/conditional_barrier_pass.cpp b/src/shader_recompiler/ir_opt/conditional_barrier_pass.cpp new file mode 100644 index 000000000..c3ed27f4f --- /dev/null +++ b/src/shader_recompiler/ir_opt/conditional_barrier_pass.cpp @@ -0,0 +1,44 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "shader_recompiler/frontend/ir/program.h" +#include "shader_recompiler/ir_opt/passes.h" + +namespace Shader::Optimization { + +void ConditionalBarrierPass(IR::Program& program) { + s32 conditional_control_flow_count{0}; + s32 conditional_return_count{0}; + for (IR::AbstractSyntaxNode& node : program.syntax_list) { + switch (node.type) { + case IR::AbstractSyntaxNode::Type::If: + case IR::AbstractSyntaxNode::Type::Loop: + conditional_control_flow_count++; + break; + case IR::AbstractSyntaxNode::Type::EndIf: + case IR::AbstractSyntaxNode::Type::Repeat: + conditional_control_flow_count--; + break; + case IR::AbstractSyntaxNode::Type::Unreachable: + case IR::AbstractSyntaxNode::Type::Return: + if (conditional_control_flow_count > 0) { + conditional_return_count++; + } + break; + case IR::AbstractSyntaxNode::Type::Block: + for (IR::Inst& inst : node.data.block->Instructions()) { + if ((conditional_control_flow_count > 0 || conditional_return_count > 0) && + inst.GetOpcode() == IR::Opcode::Barrier) { + LOG_WARNING(Shader, "Barrier within conditional control flow"); + inst.ReplaceOpcode(IR::Opcode::Identity); + } + } + break; + default: + break; + } + } + ASSERT(conditional_control_flow_count == 0); +} + +} // namespace Shader::Optimization -- cgit v1.2.3