Added SPIRV-Tools.

3rdparty/spirv-tools/source/opt/function.cpp

@@ -0,0 +1,109 @@
+// Copyright (c) 2016 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "function.h"
+
+#include <ostream>
+#include <sstream>
+
+namespace spvtools {
+namespace ir {
+
+Function* Function::Clone(IRContext* ctx) const {
+  Function* clone =
+      new Function(std::unique_ptr<Instruction>(DefInst().Clone(ctx)));
+  clone->params_.reserve(params_.size());
+  ForEachParam(
+      [clone, ctx](const Instruction* inst) {
+        clone->AddParameter(std::unique_ptr<Instruction>(inst->Clone(ctx)));
+      },
+      true);
+
+  clone->blocks_.reserve(blocks_.size());
+  for (const auto& b : blocks_) {
+    std::unique_ptr<BasicBlock> bb(b->Clone(ctx));
+    bb->SetParent(clone);
+    clone->AddBasicBlock(std::move(bb));
+  }
+
+  clone->SetFunctionEnd(std::unique_ptr<Instruction>(EndInst()->Clone(ctx)));
+  return clone;
+}
+
+void Function::ForEachInst(const std::function<void(Instruction*)>& f,
+                           bool run_on_debug_line_insts) {
+  if (def_inst_) def_inst_->ForEachInst(f, run_on_debug_line_insts);
+  for (auto& param : params_) param->ForEachInst(f, run_on_debug_line_insts);
+  for (auto& bb : blocks_) bb->ForEachInst(f, run_on_debug_line_insts);
+  if (end_inst_) end_inst_->ForEachInst(f, run_on_debug_line_insts);
+}
+
+void Function::ForEachInst(const std::function<void(const Instruction*)>& f,
+                           bool run_on_debug_line_insts) const {
+  if (def_inst_)
+    static_cast<const Instruction*>(def_inst_.get())
+        ->ForEachInst(f, run_on_debug_line_insts);
+
+  for (const auto& param : params_)
+    static_cast<const Instruction*>(param.get())
+        ->ForEachInst(f, run_on_debug_line_insts);
+
+  for (const auto& bb : blocks_)
+    static_cast<const BasicBlock*>(bb.get())->ForEachInst(
+        f, run_on_debug_line_insts);
+
+  if (end_inst_)
+    static_cast<const Instruction*>(end_inst_.get())
+        ->ForEachInst(f, run_on_debug_line_insts);
+}
+
+void Function::ForEachParam(const std::function<void(const Instruction*)>& f,
+                            bool run_on_debug_line_insts) const {
+  for (const auto& param : params_)
+    static_cast<const Instruction*>(param.get())
+        ->ForEachInst(f, run_on_debug_line_insts);
+}
+
+BasicBlock* Function::InsertBasicBlockAfter(
+    std::unique_ptr<BasicBlock>&& new_block, BasicBlock* position) {
+  for (auto bb_iter = begin(); bb_iter != end(); ++bb_iter) {
+    if (&*bb_iter == position) {
+      new_block->SetParent(this);
+      ++bb_iter;
+      bb_iter = bb_iter.InsertBefore(std::move(new_block));
+      return &*bb_iter;
+    }
+  }
+  assert(false && "Could not find insertion point.");
+  return nullptr;
+}
+
+std::ostream& operator<<(std::ostream& str, const Function& func) {
+  str << func.PrettyPrint();
+  return str;
+}
+
+std::string Function::PrettyPrint(uint32_t options) const {
+  std::ostringstream str;
+  ForEachInst([&str, options](const ir::Instruction* inst) {
+    str << inst->PrettyPrint(options);
+    if (inst->opcode() != SpvOpFunctionEnd) {
+      str << std::endl;
+    }
+  });
+  return str.str();
+}
+
+}  // namespace ir
+}  // namespace spvtools