mirror of
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383da6ba55
It was creating a new AttrBuilder when we could just fill in the AttrBuilder we're building. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173975 91177308-0d34-0410-b5e6-96231b3b80d8
978 lines
32 KiB
C++
978 lines
32 KiB
C++
//===-- Attributes.cpp - Implement AttributesList -------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// \file
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// \brief This file implements the Attribute, AttributeImpl, AttrBuilder,
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// AttributeSetImpl, and AttributeSet classes.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Attributes.h"
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#include "AttributeImpl.h"
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#include "LLVMContextImpl.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/IR/Type.h"
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#include "llvm/Support/Atomic.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Mutex.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// Attribute Construction Methods
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//===----------------------------------------------------------------------===//
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Attribute Attribute::get(LLVMContext &Context, AttrKind Kind) {
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AttrBuilder B;
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return Attribute::get(Context, B.addAttribute(Kind));
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}
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Attribute Attribute::get(LLVMContext &Context, AttrBuilder &B) {
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// If there are no attributes, return an empty Attribute class.
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if (!B.hasAttributes())
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return Attribute();
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// Otherwise, build a key to look up the existing attributes.
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LLVMContextImpl *pImpl = Context.pImpl;
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FoldingSetNodeID ID;
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ConstantInt *CI = ConstantInt::get(Type::getInt64Ty(Context), B.Raw());
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ID.AddPointer(CI);
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void *InsertPoint;
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AttributeImpl *PA = pImpl->AttrsSet.FindNodeOrInsertPos(ID, InsertPoint);
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if (!PA) {
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// If we didn't find any existing attributes of the same shape then create a
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// new one and insert it.
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PA = new AttributeImpl(Context, CI);
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pImpl->AttrsSet.InsertNode(PA, InsertPoint);
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}
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// Return the AttributesList that we found or created.
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return Attribute(PA);
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}
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Attribute Attribute::getWithAlignment(LLVMContext &Context, uint64_t Align) {
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AttrBuilder B;
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return get(Context, B.addAlignmentAttr(Align));
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}
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Attribute Attribute::getWithStackAlignment(LLVMContext &Context,
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uint64_t Align) {
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AttrBuilder B;
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return get(Context, B.addStackAlignmentAttr(Align));
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}
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//===----------------------------------------------------------------------===//
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// Attribute Accessor Methods
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//===----------------------------------------------------------------------===//
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bool Attribute::hasAttribute(AttrKind Val) const {
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return pImpl && pImpl->hasAttribute(Val);
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}
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bool Attribute::hasAttributes() const {
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return pImpl && pImpl->hasAttributes();
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}
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Constant *Attribute::getAttributeKind() const {
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return pImpl ? pImpl->getAttributeKind() : 0;
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}
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ArrayRef<Constant*> Attribute::getAttributeValues() const {
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return pImpl ? pImpl->getAttributeValues() : ArrayRef<Constant*>();
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}
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/// This returns the alignment field of an attribute as a byte alignment value.
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unsigned Attribute::getAlignment() const {
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if (!hasAttribute(Attribute::Alignment))
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return 0;
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return pImpl->getAlignment();
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}
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/// This returns the stack alignment field of an attribute as a byte alignment
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/// value.
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unsigned Attribute::getStackAlignment() const {
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if (!hasAttribute(Attribute::StackAlignment))
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return 0;
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return pImpl->getStackAlignment();
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}
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std::string Attribute::getAsString() const {
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if (hasAttribute(Attribute::ZExt))
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return "zeroext";
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if (hasAttribute(Attribute::SExt))
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return "signext";
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if (hasAttribute(Attribute::NoReturn))
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return "noreturn";
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if (hasAttribute(Attribute::NoUnwind))
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return "nounwind";
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if (hasAttribute(Attribute::UWTable))
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return "uwtable";
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if (hasAttribute(Attribute::ReturnsTwice))
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return "returns_twice";
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if (hasAttribute(Attribute::InReg))
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return "inreg";
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if (hasAttribute(Attribute::NoAlias))
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return "noalias";
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if (hasAttribute(Attribute::NoCapture))
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return "nocapture";
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if (hasAttribute(Attribute::StructRet))
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return "sret";
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if (hasAttribute(Attribute::ByVal))
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return "byval";
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if (hasAttribute(Attribute::Nest))
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return "nest";
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if (hasAttribute(Attribute::ReadNone))
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return "readnone";
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if (hasAttribute(Attribute::ReadOnly))
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return "readonly";
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if (hasAttribute(Attribute::OptimizeForSize))
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return "optsize";
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if (hasAttribute(Attribute::NoInline))
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return "noinline";
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if (hasAttribute(Attribute::InlineHint))
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return "inlinehint";
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if (hasAttribute(Attribute::AlwaysInline))
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return "alwaysinline";
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if (hasAttribute(Attribute::StackProtect))
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return "ssp";
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if (hasAttribute(Attribute::StackProtectReq))
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return "sspreq";
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if (hasAttribute(Attribute::StackProtectStrong))
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return "sspstrong";
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if (hasAttribute(Attribute::NoRedZone))
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return "noredzone";
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if (hasAttribute(Attribute::NoImplicitFloat))
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return "noimplicitfloat";
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if (hasAttribute(Attribute::Naked))
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return "naked";
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if (hasAttribute(Attribute::NonLazyBind))
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return "nonlazybind";
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if (hasAttribute(Attribute::AddressSafety))
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return "address_safety";
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if (hasAttribute(Attribute::MinSize))
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return "minsize";
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if (hasAttribute(Attribute::StackAlignment)) {
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std::string Result;
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Result += "alignstack(";
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Result += utostr(getStackAlignment());
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Result += ")";
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return Result;
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}
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if (hasAttribute(Attribute::Alignment)) {
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std::string Result;
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Result += "align ";
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Result += utostr(getAlignment());
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Result += "";
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return Result;
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}
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if (hasAttribute(Attribute::NoDuplicate))
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return "noduplicate";
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llvm_unreachable("Unknown attribute");
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}
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bool Attribute::operator==(AttrKind K) const {
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return pImpl && *pImpl == K;
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}
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bool Attribute::operator!=(AttrKind K) const {
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return !(*this == K);
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}
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bool Attribute::operator<(Attribute A) const {
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if (!pImpl && !A.pImpl) return false;
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if (!pImpl) return true;
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if (!A.pImpl) return false;
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return *pImpl < *A.pImpl;
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}
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uint64_t Attribute::Raw() const {
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return pImpl ? pImpl->Raw() : 0;
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}
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//===----------------------------------------------------------------------===//
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// AttributeImpl Definition
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//===----------------------------------------------------------------------===//
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AttributeImpl::AttributeImpl(LLVMContext &C, Attribute::AttrKind kind)
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: Context(C) {
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Kind = ConstantInt::get(Type::getInt64Ty(C), kind);
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}
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AttributeImpl::AttributeImpl(LLVMContext &C, Attribute::AttrKind kind,
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ArrayRef<Constant*> values)
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: Context(C) {
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Kind = ConstantInt::get(Type::getInt64Ty(C), kind);
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Vals.reserve(values.size());
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Vals.append(values.begin(), values.end());
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}
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AttributeImpl::AttributeImpl(LLVMContext &C, StringRef kind)
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: Context(C) {
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Kind = ConstantDataArray::getString(C, kind);
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}
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bool AttributeImpl::hasAttribute(Attribute::AttrKind A) const {
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return (Raw() & getAttrMask(A)) != 0;
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}
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bool AttributeImpl::hasAttributes() const {
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return Raw() != 0;
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}
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uint64_t AttributeImpl::getAlignment() const {
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uint64_t Mask = Raw() & getAttrMask(Attribute::Alignment);
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return 1ULL << ((Mask >> 16) - 1);
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}
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uint64_t AttributeImpl::getStackAlignment() const {
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uint64_t Mask = Raw() & getAttrMask(Attribute::StackAlignment);
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return 1ULL << ((Mask >> 26) - 1);
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}
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bool AttributeImpl::operator==(Attribute::AttrKind kind) const {
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if (ConstantInt *CI = dyn_cast<ConstantInt>(Kind))
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return CI->getZExtValue() == kind;
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return false;
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}
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bool AttributeImpl::operator!=(Attribute::AttrKind kind) const {
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return !(*this == kind);
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}
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bool AttributeImpl::operator==(StringRef kind) const {
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if (ConstantDataArray *CDA = dyn_cast<ConstantDataArray>(Kind))
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if (CDA->isString())
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return CDA->getAsString() == kind;
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return false;
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}
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bool AttributeImpl::operator!=(StringRef kind) const {
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return !(*this == kind);
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}
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bool AttributeImpl::operator<(const AttributeImpl &AI) const {
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if (!Kind && !AI.Kind) return false;
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if (!Kind && AI.Kind) return true;
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if (Kind && !AI.Kind) return false;
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ConstantInt *ThisCI = dyn_cast<ConstantInt>(Kind);
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ConstantInt *ThatCI = dyn_cast<ConstantInt>(AI.Kind);
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ConstantDataArray *ThisCDA = dyn_cast<ConstantDataArray>(Kind);
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ConstantDataArray *ThatCDA = dyn_cast<ConstantDataArray>(AI.Kind);
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if (ThisCI && ThatCI)
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return ThisCI->getZExtValue() < ThatCI->getZExtValue();
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if (ThisCI && ThatCDA)
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return true;
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if (ThisCDA && ThatCI)
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return false;
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return ThisCDA->getAsString() < ThatCDA->getAsString();
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}
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uint64_t AttributeImpl::Raw() const {
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// FIXME: Remove this.
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return cast<ConstantInt>(Kind)->getZExtValue();
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}
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uint64_t AttributeImpl::getAttrMask(Attribute::AttrKind Val) {
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// FIXME: Remove this.
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switch (Val) {
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case Attribute::EndAttrKinds:
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case Attribute::AttrKindEmptyKey:
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case Attribute::AttrKindTombstoneKey:
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llvm_unreachable("Synthetic enumerators which should never get here");
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case Attribute::None: return 0;
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case Attribute::ZExt: return 1 << 0;
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case Attribute::SExt: return 1 << 1;
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case Attribute::NoReturn: return 1 << 2;
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case Attribute::InReg: return 1 << 3;
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case Attribute::StructRet: return 1 << 4;
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case Attribute::NoUnwind: return 1 << 5;
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case Attribute::NoAlias: return 1 << 6;
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case Attribute::ByVal: return 1 << 7;
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case Attribute::Nest: return 1 << 8;
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case Attribute::ReadNone: return 1 << 9;
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case Attribute::ReadOnly: return 1 << 10;
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case Attribute::NoInline: return 1 << 11;
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case Attribute::AlwaysInline: return 1 << 12;
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case Attribute::OptimizeForSize: return 1 << 13;
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case Attribute::StackProtect: return 1 << 14;
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case Attribute::StackProtectReq: return 1 << 15;
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case Attribute::Alignment: return 31 << 16;
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case Attribute::NoCapture: return 1 << 21;
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case Attribute::NoRedZone: return 1 << 22;
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case Attribute::NoImplicitFloat: return 1 << 23;
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case Attribute::Naked: return 1 << 24;
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case Attribute::InlineHint: return 1 << 25;
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case Attribute::StackAlignment: return 7 << 26;
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case Attribute::ReturnsTwice: return 1 << 29;
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case Attribute::UWTable: return 1 << 30;
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case Attribute::NonLazyBind: return 1U << 31;
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case Attribute::AddressSafety: return 1ULL << 32;
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case Attribute::MinSize: return 1ULL << 33;
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case Attribute::NoDuplicate: return 1ULL << 34;
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case Attribute::StackProtectStrong: return 1ULL << 35;
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}
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llvm_unreachable("Unsupported attribute type");
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}
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//===----------------------------------------------------------------------===//
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// AttributeSetNode Definition
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//===----------------------------------------------------------------------===//
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AttributeSetNode *AttributeSetNode::get(LLVMContext &C,
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ArrayRef<Attribute> Attrs) {
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if (Attrs.empty())
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return 0;
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// Otherwise, build a key to look up the existing attributes.
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LLVMContextImpl *pImpl = C.pImpl;
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FoldingSetNodeID ID;
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SmallVector<Attribute, 8> SortedAttrs(Attrs.begin(), Attrs.end());
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std::sort(SortedAttrs.begin(), SortedAttrs.end());
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for (SmallVectorImpl<Attribute>::iterator I = SortedAttrs.begin(),
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E = SortedAttrs.end(); I != E; ++I)
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I->Profile(ID);
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void *InsertPoint;
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AttributeSetNode *PA =
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pImpl->AttrsSetNodes.FindNodeOrInsertPos(ID, InsertPoint);
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// If we didn't find any existing attributes of the same shape then create a
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// new one and insert it.
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if (!PA) {
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PA = new AttributeSetNode(SortedAttrs);
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pImpl->AttrsSetNodes.InsertNode(PA, InsertPoint);
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}
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// Return the AttributesListNode that we found or created.
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return PA;
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}
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bool AttributeSetNode::hasAttribute(Attribute::AttrKind Kind) const {
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for (SmallVectorImpl<Attribute>::const_iterator I = AttrList.begin(),
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E = AttrList.end(); I != E; ++I)
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if (I->hasAttribute(Kind))
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return true;
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return false;
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}
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unsigned AttributeSetNode::getAlignment() const {
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for (SmallVectorImpl<Attribute>::const_iterator I = AttrList.begin(),
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E = AttrList.end(); I != E; ++I)
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if (I->hasAttribute(Attribute::Alignment))
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return I->getAlignment();
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return 0;
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}
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unsigned AttributeSetNode::getStackAlignment() const {
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for (SmallVectorImpl<Attribute>::const_iterator I = AttrList.begin(),
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E = AttrList.end(); I != E; ++I)
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if (I->hasAttribute(Attribute::StackAlignment))
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return I->getStackAlignment();
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return 0;
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}
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std::string AttributeSetNode::getAsString() const {
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std::string Str = "";
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for (SmallVectorImpl<Attribute>::const_iterator I = AttrList.begin(),
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E = AttrList.end(); I != E; ++I) {
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if (I != AttrList.begin()) Str += " ";
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Str += I->getAsString();
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}
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return Str;
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}
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//===----------------------------------------------------------------------===//
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// AttributeSetImpl Definition
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//===----------------------------------------------------------------------===//
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uint64_t AttributeSetImpl::Raw(uint64_t Index) const {
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for (unsigned I = 0, E = getNumAttributes(); I != E; ++I) {
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if (getSlotIndex(I) != Index) continue;
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const AttributeSetNode *ASN = AttrNodes[I].second;
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AttrBuilder B;
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for (AttributeSetNode::const_iterator II = ASN->begin(),
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IE = ASN->end(); II != IE; ++II)
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B.addAttributes(*II);
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return B.Raw();
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}
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return 0;
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}
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//===----------------------------------------------------------------------===//
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// AttributeSet Construction and Mutation Methods
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//===----------------------------------------------------------------------===//
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AttributeSet
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AttributeSet::getImpl(LLVMContext &C,
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ArrayRef<std::pair<unsigned, AttributeSetNode*> > Attrs) {
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LLVMContextImpl *pImpl = C.pImpl;
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FoldingSetNodeID ID;
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AttributeSetImpl::Profile(ID, Attrs);
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void *InsertPoint;
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AttributeSetImpl *PA = pImpl->AttrsLists.FindNodeOrInsertPos(ID, InsertPoint);
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// If we didn't find any existing attributes of the same shape then
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// create a new one and insert it.
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if (!PA) {
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PA = new AttributeSetImpl(C, Attrs);
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pImpl->AttrsLists.InsertNode(PA, InsertPoint);
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}
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// Return the AttributesList that we found or created.
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return AttributeSet(PA);
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}
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AttributeSet AttributeSet::get(LLVMContext &C,
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ArrayRef<std::pair<unsigned, Attribute> > Attrs){
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// If there are no attributes then return a null AttributesList pointer.
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if (Attrs.empty())
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return AttributeSet();
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#ifndef NDEBUG
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for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
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assert((!i || Attrs[i-1].first <= Attrs[i].first) &&
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"Misordered Attributes list!");
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assert(Attrs[i].second.hasAttributes() &&
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"Pointless attribute!");
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}
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#endif
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// Create a vector if (unsigned, AttributeSetNode*) pairs from the attributes
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// list.
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SmallVector<std::pair<unsigned, AttributeSetNode*>, 8> AttrPairVec;
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for (ArrayRef<std::pair<unsigned, Attribute> >::iterator I = Attrs.begin(),
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E = Attrs.end(); I != E; ) {
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unsigned Index = I->first;
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SmallVector<Attribute, 4> AttrVec;
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while (I != E && I->first == Index) {
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AttrVec.push_back(I->second);
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++I;
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}
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AttrPairVec.push_back(std::make_pair(Index,
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AttributeSetNode::get(C, AttrVec)));
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}
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return getImpl(C, AttrPairVec);
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}
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AttributeSet AttributeSet::get(LLVMContext &C,
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ArrayRef<std::pair<unsigned,
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AttributeSetNode*> > Attrs) {
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// If there are no attributes then return a null AttributesList pointer.
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if (Attrs.empty())
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return AttributeSet();
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return getImpl(C, Attrs);
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}
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AttributeSet AttributeSet::get(LLVMContext &C, unsigned Idx, AttrBuilder &B) {
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if (!B.hasAttributes())
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return AttributeSet();
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SmallVector<std::pair<unsigned, Attribute>, 8> Attrs;
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for (AttrBuilder::iterator I = B.begin(), E = B.end(); I != E; ++I) {
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Attribute::AttrKind Kind = *I;
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if (Kind == Attribute::Alignment)
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Attrs.push_back(std::make_pair(Idx, Attribute::
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getWithAlignment(C, B.getAlignment())));
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else if (Kind == Attribute::StackAlignment)
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Attrs.push_back(std::make_pair(Idx, Attribute::
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getWithStackAlignment(C, B.getStackAlignment())));
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else
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Attrs.push_back(std::make_pair(Idx, Attribute::get(C, Kind)));
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}
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return get(C, Attrs);
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}
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AttributeSet AttributeSet::get(LLVMContext &C, unsigned Idx,
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ArrayRef<Attribute::AttrKind> Kind) {
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SmallVector<std::pair<unsigned, Attribute>, 8> Attrs;
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for (ArrayRef<Attribute::AttrKind>::iterator I = Kind.begin(),
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E = Kind.end(); I != E; ++I)
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Attrs.push_back(std::make_pair(Idx, Attribute::get(C, *I)));
|
|
return get(C, Attrs);
|
|
}
|
|
|
|
AttributeSet AttributeSet::get(LLVMContext &C, ArrayRef<AttributeSet> Attrs) {
|
|
if (Attrs.empty()) return AttributeSet();
|
|
|
|
SmallVector<std::pair<unsigned, AttributeSetNode*>, 8> AttrNodeVec;
|
|
for (unsigned I = 0, E = Attrs.size(); I != E; ++I) {
|
|
AttributeSet AS = Attrs[I];
|
|
if (!AS.pImpl) continue;
|
|
AttrNodeVec.append(AS.pImpl->AttrNodes.begin(), AS.pImpl->AttrNodes.end());
|
|
}
|
|
|
|
return getImpl(C, AttrNodeVec);
|
|
}
|
|
|
|
AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Idx,
|
|
Attribute::AttrKind Attr) const {
|
|
return addAttributes(C, Idx, AttributeSet::get(C, Idx, Attr));
|
|
}
|
|
|
|
AttributeSet AttributeSet::addAttributes(LLVMContext &C, unsigned Idx,
|
|
AttributeSet Attrs) const {
|
|
if (!pImpl) return Attrs;
|
|
if (!Attrs.pImpl) return *this;
|
|
|
|
#ifndef NDEBUG
|
|
// FIXME it is not obvious how this should work for alignment. For now, say
|
|
// we can't change a known alignment.
|
|
unsigned OldAlign = getParamAlignment(Idx);
|
|
unsigned NewAlign = Attrs.getParamAlignment(Idx);
|
|
assert((!OldAlign || !NewAlign || OldAlign == NewAlign) &&
|
|
"Attempt to change alignment!");
|
|
#endif
|
|
|
|
// Add the attribute slots before the one we're trying to add.
|
|
SmallVector<AttributeSet, 4> AttrSet;
|
|
uint64_t NumAttrs = pImpl->getNumAttributes();
|
|
AttributeSet AS;
|
|
uint64_t LastIndex = 0;
|
|
for (unsigned I = 0, E = NumAttrs; I != E; ++I) {
|
|
if (getSlotIndex(I) >= Idx) {
|
|
if (getSlotIndex(I) == Idx) AS = getSlotAttributes(LastIndex++);
|
|
break;
|
|
}
|
|
LastIndex = I + 1;
|
|
AttrSet.push_back(getSlotAttributes(I));
|
|
}
|
|
|
|
// Now add the attribute into the correct slot. There may already be an
|
|
// AttributeSet there.
|
|
AttrBuilder B(AS, Idx);
|
|
|
|
for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
|
|
if (Attrs.getSlotIndex(I) == Idx) {
|
|
for (AttributeSetImpl::const_iterator II = Attrs.pImpl->begin(I),
|
|
IE = Attrs.pImpl->end(I); II != IE; ++II)
|
|
B.addAttributes(*II);
|
|
break;
|
|
}
|
|
|
|
AttrSet.push_back(AttributeSet::get(C, Idx, B));
|
|
|
|
// Add the remaining attribute slots.
|
|
for (unsigned I = LastIndex, E = NumAttrs; I < E; ++I)
|
|
AttrSet.push_back(getSlotAttributes(I));
|
|
|
|
return get(C, AttrSet);
|
|
}
|
|
|
|
AttributeSet AttributeSet::removeAttribute(LLVMContext &C, unsigned Idx,
|
|
Attribute::AttrKind Attr) const {
|
|
return removeAttributes(C, Idx, AttributeSet::get(C, Idx, Attr));
|
|
}
|
|
|
|
AttributeSet AttributeSet::removeAttributes(LLVMContext &C, unsigned Idx,
|
|
AttributeSet Attrs) const {
|
|
if (!pImpl) return AttributeSet();
|
|
if (!Attrs.pImpl) return *this;
|
|
|
|
#ifndef NDEBUG
|
|
// FIXME it is not obvious how this should work for alignment.
|
|
// For now, say we can't pass in alignment, which no current use does.
|
|
assert(!Attrs.hasAttribute(Idx, Attribute::Alignment) &&
|
|
"Attempt to change alignment!");
|
|
#endif
|
|
|
|
// Add the attribute slots before the one we're trying to add.
|
|
SmallVector<AttributeSet, 4> AttrSet;
|
|
uint64_t NumAttrs = pImpl->getNumAttributes();
|
|
AttributeSet AS;
|
|
uint64_t LastIndex = 0;
|
|
for (unsigned I = 0, E = NumAttrs; I != E; ++I) {
|
|
if (getSlotIndex(I) >= Idx) {
|
|
if (getSlotIndex(I) == Idx) AS = getSlotAttributes(LastIndex++);
|
|
break;
|
|
}
|
|
LastIndex = I + 1;
|
|
AttrSet.push_back(getSlotAttributes(I));
|
|
}
|
|
|
|
// Now add the attribute into the correct slot. There may already be an
|
|
// AttributeSet there.
|
|
AttrBuilder B(AS, Idx);
|
|
|
|
for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
|
|
if (Attrs.getSlotIndex(I) == Idx) {
|
|
for (AttributeSetImpl::const_iterator II = Attrs.pImpl->begin(I),
|
|
IE = Attrs.pImpl->end(I); II != IE; ++II)
|
|
B.removeAttributes(*II);
|
|
break;
|
|
}
|
|
|
|
AttrSet.push_back(AttributeSet::get(C, Idx, B));
|
|
|
|
// Add the remaining attribute slots.
|
|
for (unsigned I = LastIndex, E = NumAttrs; I < E; ++I)
|
|
AttrSet.push_back(getSlotAttributes(I));
|
|
|
|
return get(C, AttrSet);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// AttributeSet Accessor Methods
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
AttributeSet AttributeSet::getParamAttributes(unsigned Idx) const {
|
|
return pImpl && hasAttributes(Idx) ?
|
|
AttributeSet::get(pImpl->getContext(),
|
|
ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
|
|
std::make_pair(Idx, getAttributes(Idx)))) :
|
|
AttributeSet();
|
|
}
|
|
|
|
AttributeSet AttributeSet::getRetAttributes() const {
|
|
return pImpl && hasAttributes(ReturnIndex) ?
|
|
AttributeSet::get(pImpl->getContext(),
|
|
ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
|
|
std::make_pair(ReturnIndex,
|
|
getAttributes(ReturnIndex)))) :
|
|
AttributeSet();
|
|
}
|
|
|
|
AttributeSet AttributeSet::getFnAttributes() const {
|
|
return pImpl && hasAttributes(FunctionIndex) ?
|
|
AttributeSet::get(pImpl->getContext(),
|
|
ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
|
|
std::make_pair(FunctionIndex,
|
|
getAttributes(FunctionIndex)))) :
|
|
AttributeSet();
|
|
}
|
|
|
|
bool AttributeSet::hasAttribute(unsigned Index, Attribute::AttrKind Kind) const{
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->hasAttribute(Kind) : false;
|
|
}
|
|
|
|
bool AttributeSet::hasAttributes(unsigned Index) const {
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->hasAttributes() : false;
|
|
}
|
|
|
|
/// \brief Return true if the specified attribute is set for at least one
|
|
/// parameter or for the return value.
|
|
bool AttributeSet::hasAttrSomewhere(Attribute::AttrKind Attr) const {
|
|
if (pImpl == 0) return false;
|
|
|
|
for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I)
|
|
for (AttributeSetImpl::const_iterator II = pImpl->begin(I),
|
|
IE = pImpl->end(I); II != IE; ++II)
|
|
if (II->hasAttribute(Attr))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
unsigned AttributeSet::getParamAlignment(unsigned Index) const {
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->getAlignment() : 0;
|
|
}
|
|
|
|
unsigned AttributeSet::getStackAlignment(unsigned Index) const {
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->getStackAlignment() : 0;
|
|
}
|
|
|
|
std::string AttributeSet::getAsString(unsigned Index) const {
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->getAsString() : std::string("");
|
|
}
|
|
|
|
/// \brief The attributes for the specified index are returned.
|
|
AttributeSetNode *AttributeSet::getAttributes(unsigned Idx) const {
|
|
if (!pImpl) return 0;
|
|
|
|
// Loop through to find the attribute node we want.
|
|
for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I)
|
|
if (pImpl->getSlotIndex(I) == Idx)
|
|
return pImpl->getSlotNode(I);
|
|
|
|
return 0;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// AttributeSet Introspection Methods
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// \brief Return the number of slots used in this attribute list. This is the
|
|
/// number of arguments that have an attribute set on them (including the
|
|
/// function itself).
|
|
unsigned AttributeSet::getNumSlots() const {
|
|
return pImpl ? pImpl->getNumAttributes() : 0;
|
|
}
|
|
|
|
uint64_t AttributeSet::getSlotIndex(unsigned Slot) const {
|
|
assert(pImpl && Slot < pImpl->getNumAttributes() &&
|
|
"Slot # out of range!");
|
|
return pImpl->getSlotIndex(Slot);
|
|
}
|
|
|
|
AttributeSet AttributeSet::getSlotAttributes(unsigned Slot) const {
|
|
assert(pImpl && Slot < pImpl->getNumAttributes() &&
|
|
"Slot # out of range!");
|
|
return pImpl->getSlotAttributes(Slot);
|
|
}
|
|
|
|
uint64_t AttributeSet::Raw(unsigned Index) const {
|
|
// FIXME: Remove this.
|
|
return pImpl ? pImpl->Raw(Index) : 0;
|
|
}
|
|
|
|
void AttributeSet::dump() const {
|
|
dbgs() << "PAL[\n";
|
|
|
|
for (unsigned i = 0, e = getNumSlots(); i < e; ++i) {
|
|
uint64_t Index = getSlotIndex(i);
|
|
dbgs() << " { ";
|
|
if (Index == ~0U)
|
|
dbgs() << "~0U";
|
|
else
|
|
dbgs() << Index;
|
|
dbgs() << " => " << getAsString(Index) << " }\n";
|
|
}
|
|
|
|
dbgs() << "]\n";
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// AttrBuilder Method Implementations
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
AttrBuilder::AttrBuilder(AttributeSet AS, unsigned Idx)
|
|
: Alignment(0), StackAlignment(0) {
|
|
AttributeSetImpl *pImpl = AS.pImpl;
|
|
if (!pImpl) return;
|
|
|
|
for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I) {
|
|
if (pImpl->getSlotIndex(I) != Idx) continue;
|
|
|
|
for (AttributeSetImpl::const_iterator II = pImpl->begin(I),
|
|
IE = pImpl->end(I); II != IE; ++II)
|
|
addAttributes(*II);
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
void AttrBuilder::clear() {
|
|
Attrs.clear();
|
|
Alignment = StackAlignment = 0;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addAttribute(Attribute::AttrKind Val) {
|
|
Attrs.insert(Val);
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::removeAttribute(Attribute::AttrKind Val) {
|
|
Attrs.erase(Val);
|
|
if (Val == Attribute::Alignment)
|
|
Alignment = 0;
|
|
else if (Val == Attribute::StackAlignment)
|
|
StackAlignment = 0;
|
|
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addAttributes(Attribute Attr) {
|
|
uint64_t Mask = Attr.Raw();
|
|
|
|
for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
|
|
I = Attribute::AttrKind(I + 1))
|
|
if ((Mask & AttributeImpl::getAttrMask(I)) != 0)
|
|
Attrs.insert(I);
|
|
|
|
if (Attr.getAlignment())
|
|
Alignment = Attr.getAlignment();
|
|
if (Attr.getStackAlignment())
|
|
StackAlignment = Attr.getStackAlignment();
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::removeAttributes(Attribute A) {
|
|
uint64_t Mask = A.Raw();
|
|
|
|
for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
|
|
I = Attribute::AttrKind(I + 1)) {
|
|
if (Mask & AttributeImpl::getAttrMask(I)) {
|
|
Attrs.erase(I);
|
|
|
|
if (I == Attribute::Alignment)
|
|
Alignment = 0;
|
|
else if (I == Attribute::StackAlignment)
|
|
StackAlignment = 0;
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addAlignmentAttr(unsigned Align) {
|
|
if (Align == 0) return *this;
|
|
|
|
assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
|
|
assert(Align <= 0x40000000 && "Alignment too large.");
|
|
|
|
Attrs.insert(Attribute::Alignment);
|
|
Alignment = Align;
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addStackAlignmentAttr(unsigned Align) {
|
|
// Default alignment, allow the target to define how to align it.
|
|
if (Align == 0) return *this;
|
|
|
|
assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
|
|
assert(Align <= 0x100 && "Alignment too large.");
|
|
|
|
Attrs.insert(Attribute::StackAlignment);
|
|
StackAlignment = Align;
|
|
return *this;
|
|
}
|
|
|
|
bool AttrBuilder::contains(Attribute::AttrKind A) const {
|
|
return Attrs.count(A);
|
|
}
|
|
|
|
bool AttrBuilder::hasAttributes() const {
|
|
return !Attrs.empty();
|
|
}
|
|
|
|
bool AttrBuilder::hasAttributes(const Attribute &A) const {
|
|
return Raw() & A.Raw();
|
|
}
|
|
|
|
bool AttrBuilder::hasAlignmentAttr() const {
|
|
return Alignment != 0;
|
|
}
|
|
|
|
bool AttrBuilder::operator==(const AttrBuilder &B) {
|
|
SmallVector<Attribute::AttrKind, 8> This(Attrs.begin(), Attrs.end());
|
|
SmallVector<Attribute::AttrKind, 8> That(B.Attrs.begin(), B.Attrs.end());
|
|
return This == That;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addRawValue(uint64_t Val) {
|
|
if (!Val) return *this;
|
|
|
|
for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
|
|
I = Attribute::AttrKind(I + 1)) {
|
|
if (uint64_t A = (Val & AttributeImpl::getAttrMask(I))) {
|
|
Attrs.insert(I);
|
|
|
|
if (I == Attribute::Alignment)
|
|
Alignment = 1ULL << ((A >> 16) - 1);
|
|
else if (I == Attribute::StackAlignment)
|
|
StackAlignment = 1ULL << ((A >> 26)-1);
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
uint64_t AttrBuilder::Raw() const {
|
|
uint64_t Mask = 0;
|
|
|
|
for (DenseSet<Attribute::AttrKind>::const_iterator I = Attrs.begin(),
|
|
E = Attrs.end(); I != E; ++I) {
|
|
Attribute::AttrKind Kind = *I;
|
|
|
|
if (Kind == Attribute::Alignment)
|
|
Mask |= (Log2_32(Alignment) + 1) << 16;
|
|
else if (Kind == Attribute::StackAlignment)
|
|
Mask |= (Log2_32(StackAlignment) + 1) << 26;
|
|
else
|
|
Mask |= AttributeImpl::getAttrMask(Kind);
|
|
}
|
|
|
|
return Mask;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// AttributeFuncs Function Defintions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
Attribute AttributeFuncs::typeIncompatible(Type *Ty) {
|
|
AttrBuilder Incompatible;
|
|
|
|
if (!Ty->isIntegerTy())
|
|
// Attribute that only apply to integers.
|
|
Incompatible.addAttribute(Attribute::SExt)
|
|
.addAttribute(Attribute::ZExt);
|
|
|
|
if (!Ty->isPointerTy())
|
|
// Attribute that only apply to pointers.
|
|
Incompatible.addAttribute(Attribute::ByVal)
|
|
.addAttribute(Attribute::Nest)
|
|
.addAttribute(Attribute::NoAlias)
|
|
.addAttribute(Attribute::NoCapture)
|
|
.addAttribute(Attribute::StructRet);
|
|
|
|
return Attribute::get(Ty->getContext(), Incompatible);
|
|
}
|
|
|
|
/// \brief This returns an integer containing an encoding of all the LLVM
|
|
/// attributes found in the given attribute bitset. Any change to this encoding
|
|
/// is a breaking change to bitcode compatibility.
|
|
/// N.B. This should be used only by the bitcode reader!
|
|
uint64_t AttributeFuncs::encodeLLVMAttributesForBitcode(AttributeSet Attrs,
|
|
unsigned Index) {
|
|
// FIXME: It doesn't make sense to store the alignment information as an
|
|
// expanded out value, we should store it as a log2 value. However, we can't
|
|
// just change that here without breaking bitcode compatibility. If this ever
|
|
// becomes a problem in practice, we should introduce new tag numbers in the
|
|
// bitcode file and have those tags use a more efficiently encoded alignment
|
|
// field.
|
|
|
|
// Store the alignment in the bitcode as a 16-bit raw value instead of a 5-bit
|
|
// log2 encoded value. Shift the bits above the alignment up by 11 bits.
|
|
uint64_t EncodedAttrs = Attrs.Raw(Index) & 0xffff;
|
|
if (Attrs.hasAttribute(Index, Attribute::Alignment))
|
|
EncodedAttrs |= Attrs.getParamAlignment(Index) << 16;
|
|
EncodedAttrs |= (Attrs.Raw(Index) & (0xffffULL << 21)) << 11;
|
|
return EncodedAttrs;
|
|
}
|
|
|
|
/// \brief This fills an AttrBuilder object with the LLVM attributes that have
|
|
/// been decoded from the given integer. This function must stay in sync with
|
|
/// 'encodeLLVMAttributesForBitcode'.
|
|
/// N.B. This should be used only by the bitcode reader!
|
|
void AttributeFuncs::decodeLLVMAttributesForBitcode(LLVMContext &C,
|
|
AttrBuilder &B,
|
|
uint64_t EncodedAttrs) {
|
|
// The alignment is stored as a 16-bit raw value from bits 31--16. We shift
|
|
// the bits above 31 down by 11 bits.
|
|
unsigned Alignment = (EncodedAttrs & (0xffffULL << 16)) >> 16;
|
|
assert((!Alignment || isPowerOf2_32(Alignment)) &&
|
|
"Alignment must be a power of two.");
|
|
|
|
if (Alignment)
|
|
B.addAlignmentAttr(Alignment);
|
|
B.addRawValue(((EncodedAttrs & (0xffffULL << 32)) >> 11) |
|
|
(EncodedAttrs & 0xffff));
|
|
}
|