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4d7de376bb
This API is more explicit and avoids relying on passing around empty SILLocation. (No functional change.) Swift SVN r7988
103 lines
3.6 KiB
C++
103 lines
3.6 KiB
C++
//===--- SILBasicBlock.cpp - Basic blocks for high-level SIL code ----------==//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the high-level BasicBlocks used for Swift SIL code.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/STLExtras.h"
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#include "swift/SIL/SILBasicBlock.h"
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#include "swift/SIL/SILArgument.h"
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#include "swift/SIL/SILFunction.h"
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#include "swift/SIL/SILInstruction.h"
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#include "swift/SIL/SILModule.h"
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using namespace swift;
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//===----------------------------------------------------------------------===//
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// SILArgument Implementation
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//===----------------------------------------------------------------------===//
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SILArgument::SILArgument(SILType Ty, SILBasicBlock *ParentBB)
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: ValueBase(ValueKind::SILArgument, Ty), ParentBB(ParentBB) {
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ParentBB->addArgument(this);
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}
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SILFunction *SILArgument::getFunction() {
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return getParent()->getParent();
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}
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const SILFunction *SILArgument::getFunction() const {
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return getParent()->getParent();
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}
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SILModule *SILArgument::getModule() {
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return getFunction()->getParent();
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}
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const SILModule *SILArgument::getModule() const {
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return getFunction()->getParent();
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}
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//===----------------------------------------------------------------------===//
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// SILBasicBlock Implementation
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//===----------------------------------------------------------------------===//
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SILBasicBlock::SILBasicBlock(SILFunction *Parent)
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: Parent(Parent), PredList(0) {
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Parent->getBlocks().push_back(this);
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}
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SILBasicBlock::~SILBasicBlock() {
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// iplist's destructor is going to destroy the InstList.
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}
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SILModule *SILBasicBlock::getModule() {
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return getParent()->getParent();
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}
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const SILModule *SILBasicBlock::getModule() const {
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return getParent()->getParent();
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}
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/// eraseFromParent - This method unlinks 'self' from the containing SIL and
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/// deletes it.
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///
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void SILBasicBlock::eraseFromParent() {
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getParent()->getBlocks().erase(this);
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}
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/// \brief Splits a basic block into two at the specified instruction.
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///
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/// Note that all the instructions BEFORE the specified iterator
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/// stay as part of the original basic block. The old basic block is left
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/// without a terminator.
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SILBasicBlock *SILBasicBlock::splitBasicBlock(iterator I) {
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SILBasicBlock *New = new (Parent->getModule()) SILBasicBlock(Parent);
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SILFunction::iterator Where = llvm::next(SILFunction::iterator(this));
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SILFunction::iterator First = SILFunction::iterator(New);
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if (Where != First)
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Parent->getBlocks().splice(Where, Parent->getBlocks(), First);
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// Move all of the specified instructions from the original basic block into
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// the new basic block.
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New->getInstList().splice(New->end(), this->getInstList(), I, end());
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return New;
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}
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/// \brief Splits a basic block into two at the specified instruction and
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/// inserts an unconditional branch from the old basic block to the new basic
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/// block.
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SILBasicBlock *SILBasicBlock::splitBasicBlockAndBranch(iterator I,
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SILLocation BranchLoc) {
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SILBasicBlock *New = splitBasicBlock(I);
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getInstList().insert(getInstList().end(),
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BranchInst::create(BranchLoc, New, *getParent()));
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return New;
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}
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