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| author | bunnei <bunneidev@gmail.com> | 2021-07-25 11:39:04 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-07-25 11:39:04 -0700 |
| commit | 98b26b6e126d4775fdf3f773fe8a8ac808a8ff8f (patch) | |
| tree | 816faa96c2c4d291825063433331a8ea4b3d08f1 /src/shader_recompiler/ir_opt/identity_removal_pass.cpp | |
| parent | c2aaf5137003868b2375b96ee84e2cb42d5f355e (diff) | |
| parent | 7f13104c1778cfdfd54350e92603164070781124 (diff) | |
Merge pull request #6585 from ameerj/hades
Shader Decompiler Rewrite
Diffstat (limited to 'src/shader_recompiler/ir_opt/identity_removal_pass.cpp')
| -rw-r--r-- | src/shader_recompiler/ir_opt/identity_removal_pass.cpp | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/shader_recompiler/ir_opt/identity_removal_pass.cpp b/src/shader_recompiler/ir_opt/identity_removal_pass.cpp new file mode 100644 index 0000000000..e9b55f8358 --- /dev/null +++ b/src/shader_recompiler/ir_opt/identity_removal_pass.cpp @@ -0,0 +1,38 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <vector> + +#include "shader_recompiler/frontend/ir/basic_block.h" +#include "shader_recompiler/frontend/ir/value.h" +#include "shader_recompiler/ir_opt/passes.h" + +namespace Shader::Optimization { + +void IdentityRemovalPass(IR::Program& program) { + std::vector<IR::Inst*> to_invalidate; + for (IR::Block* const block : program.blocks) { + for (auto inst = block->begin(); inst != block->end();) { + const size_t num_args{inst->NumArgs()}; + for (size_t i = 0; i < num_args; ++i) { + IR::Value arg; + while ((arg = inst->Arg(i)).IsIdentity()) { + inst->SetArg(i, arg.Inst()->Arg(0)); + } + } + if (inst->GetOpcode() == IR::Opcode::Identity || + inst->GetOpcode() == IR::Opcode::Void) { + to_invalidate.push_back(&*inst); + inst = block->Instructions().erase(inst); + } else { + ++inst; + } + } + } + for (IR::Inst* const inst : to_invalidate) { + inst->Invalidate(); + } +} + +} // namespace Shader::Optimization |