mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-24 12:30:13 +00:00
86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
// Copyright (c) 2017 The Khronos Group Inc.
|
|
// Copyright (c) 2017 Valve Corporation
|
|
// Copyright (c) 2017 LunarG 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 "source/opt/inline_exhaustive_pass.h"
|
|
|
|
#include <utility>
|
|
|
|
namespace spvtools {
|
|
namespace opt {
|
|
|
|
Pass::Status InlineExhaustivePass::InlineExhaustive(Function* func) {
|
|
bool modified = false;
|
|
// Using block iterators here because of block erasures and insertions.
|
|
for (auto bi = func->begin(); bi != func->end(); ++bi) {
|
|
for (auto ii = bi->begin(); ii != bi->end();) {
|
|
if (IsInlinableFunctionCall(&*ii)) {
|
|
// Inline call.
|
|
std::vector<std::unique_ptr<BasicBlock>> newBlocks;
|
|
std::vector<std::unique_ptr<Instruction>> newVars;
|
|
if (!GenInlineCode(&newBlocks, &newVars, ii, bi)) {
|
|
return Status::Failure;
|
|
}
|
|
// If call block is replaced with more than one block, point
|
|
// succeeding phis at new last block.
|
|
if (newBlocks.size() > 1) UpdateSucceedingPhis(newBlocks);
|
|
// Replace old calling block with new block(s).
|
|
|
|
// We need to kill the name and decorations for the call, which
|
|
// will be deleted. Other instructions in the block will be moved to
|
|
// newBlocks. We don't need to do anything with those.
|
|
context()->KillNamesAndDecorates(&*ii);
|
|
|
|
bi = bi.Erase();
|
|
|
|
for (auto& bb : newBlocks) {
|
|
bb->SetParent(func);
|
|
}
|
|
bi = bi.InsertBefore(&newBlocks);
|
|
// Insert new function variables.
|
|
if (newVars.size() > 0)
|
|
func->begin()->begin().InsertBefore(std::move(newVars));
|
|
// Restart inlining at beginning of calling block.
|
|
ii = bi->begin();
|
|
modified = true;
|
|
} else {
|
|
++ii;
|
|
}
|
|
}
|
|
}
|
|
return (modified ? Status::SuccessWithChange : Status::SuccessWithoutChange);
|
|
}
|
|
|
|
Pass::Status InlineExhaustivePass::ProcessImpl() {
|
|
Status status = Status::SuccessWithoutChange;
|
|
// Attempt exhaustive inlining on each entry point function in module
|
|
ProcessFunction pfn = [&status, this](Function* fp) {
|
|
status = CombineStatus(status, InlineExhaustive(fp));
|
|
return false;
|
|
};
|
|
context()->ProcessEntryPointCallTree(pfn);
|
|
return status;
|
|
}
|
|
|
|
InlineExhaustivePass::InlineExhaustivePass() = default;
|
|
|
|
Pass::Status InlineExhaustivePass::Process() {
|
|
InitializeInline();
|
|
return ProcessImpl();
|
|
}
|
|
|
|
} // namespace opt
|
|
} // namespace spvtools
|