mirror of
https://github.com/c64scene-ar/llvm-6502.git
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5ff5907996
Summary: If a pointer is marked as dereferenceable_or_null(N), LLVM assumes it is either `null` or `dereferenceable(N)` or both. This change only introduces the attribute and adds a token test case for the `llvm-as` / `llvm-dis`. It does not hook up other parts of the optimizer to actually exploit the attribute -- those changes will come later. For pointers in address space 0, `dereferenceable(N)` is now exactly equivalent to `dereferenceable_or_null(N)` && `nonnull`. For other address spaces, `dereferenceable(N)` is potentially weaker than `dereferenceable_or_null(N)` && `nonnull` (since we could have a null `dereferenceable(N)` pointer). The motivating case for this change is Java (and other managed languages), where pointers are either `null` or dereferenceable up to some usually known-at-compile-time constant offset. Reviewers: rafael, hfinkel Reviewed By: hfinkel Subscribers: nicholas, llvm-commits Differential Revision: http://reviews.llvm.org/D8650 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235132 91177308-0d34-0410-b5e6-96231b3b80d8
1314 lines
43 KiB
C++
1314 lines
43 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/STLExtras.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, Attribute::AttrKind Kind,
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uint64_t Val) {
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LLVMContextImpl *pImpl = Context.pImpl;
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FoldingSetNodeID ID;
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ID.AddInteger(Kind);
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if (Val) ID.AddInteger(Val);
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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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if (!Val)
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PA = new EnumAttributeImpl(Kind);
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else
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PA = new IntAttributeImpl(Kind, Val);
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pImpl->AttrsSet.InsertNode(PA, InsertPoint);
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}
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// Return the Attribute that we found or created.
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return Attribute(PA);
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}
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Attribute Attribute::get(LLVMContext &Context, StringRef Kind, StringRef Val) {
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LLVMContextImpl *pImpl = Context.pImpl;
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FoldingSetNodeID ID;
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ID.AddString(Kind);
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if (!Val.empty()) ID.AddString(Val);
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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 StringAttributeImpl(Kind, Val);
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pImpl->AttrsSet.InsertNode(PA, InsertPoint);
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}
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// Return the Attribute 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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assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
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assert(Align <= 0x40000000 && "Alignment too large.");
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return get(Context, Alignment, 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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assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
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assert(Align <= 0x100 && "Alignment too large.");
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return get(Context, StackAlignment, Align);
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}
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Attribute Attribute::getWithDereferenceableBytes(LLVMContext &Context,
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uint64_t Bytes) {
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assert(Bytes && "Bytes must be non-zero.");
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return get(Context, Dereferenceable, Bytes);
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}
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Attribute Attribute::getWithDereferenceableOrNullBytes(LLVMContext &Context,
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uint64_t Bytes) {
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assert(Bytes && "Bytes must be non-zero.");
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return get(Context, DereferenceableOrNull, Bytes);
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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::isEnumAttribute() const {
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return pImpl && pImpl->isEnumAttribute();
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}
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bool Attribute::isIntAttribute() const {
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return pImpl && pImpl->isIntAttribute();
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}
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bool Attribute::isStringAttribute() const {
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return pImpl && pImpl->isStringAttribute();
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}
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Attribute::AttrKind Attribute::getKindAsEnum() const {
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if (!pImpl) return None;
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assert((isEnumAttribute() || isIntAttribute()) &&
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"Invalid attribute type to get the kind as an enum!");
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return pImpl ? pImpl->getKindAsEnum() : None;
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}
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uint64_t Attribute::getValueAsInt() const {
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if (!pImpl) return 0;
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assert(isIntAttribute() &&
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"Expected the attribute to be an integer attribute!");
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return pImpl ? pImpl->getValueAsInt() : 0;
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}
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StringRef Attribute::getKindAsString() const {
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if (!pImpl) return StringRef();
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assert(isStringAttribute() &&
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"Invalid attribute type to get the kind as a string!");
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return pImpl ? pImpl->getKindAsString() : StringRef();
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}
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StringRef Attribute::getValueAsString() const {
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if (!pImpl) return StringRef();
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assert(isStringAttribute() &&
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"Invalid attribute type to get the value as a string!");
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return pImpl ? pImpl->getValueAsString() : StringRef();
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}
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bool Attribute::hasAttribute(AttrKind Kind) const {
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return (pImpl && pImpl->hasAttribute(Kind)) || (!pImpl && Kind == None);
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}
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bool Attribute::hasAttribute(StringRef Kind) const {
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if (!isStringAttribute()) return false;
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return pImpl && pImpl->hasAttribute(Kind);
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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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assert(hasAttribute(Attribute::Alignment) &&
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"Trying to get alignment from non-alignment attribute!");
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return pImpl->getValueAsInt();
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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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assert(hasAttribute(Attribute::StackAlignment) &&
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"Trying to get alignment from non-alignment attribute!");
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return pImpl->getValueAsInt();
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}
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/// This returns the number of dereferenceable bytes.
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uint64_t Attribute::getDereferenceableBytes() const {
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assert(hasAttribute(Attribute::Dereferenceable) &&
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"Trying to get dereferenceable bytes from "
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"non-dereferenceable attribute!");
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return pImpl->getValueAsInt();
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}
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uint64_t Attribute::getDereferenceableOrNullBytes() const {
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assert(hasAttribute(Attribute::DereferenceableOrNull) &&
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"Trying to get dereferenceable bytes from "
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"non-dereferenceable attribute!");
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return pImpl->getValueAsInt();
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}
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std::string Attribute::getAsString(bool InAttrGrp) const {
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if (!pImpl) return "";
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if (hasAttribute(Attribute::SanitizeAddress))
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return "sanitize_address";
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if (hasAttribute(Attribute::AlwaysInline))
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return "alwaysinline";
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if (hasAttribute(Attribute::Builtin))
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return "builtin";
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if (hasAttribute(Attribute::ByVal))
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return "byval";
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if (hasAttribute(Attribute::InAlloca))
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return "inalloca";
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if (hasAttribute(Attribute::InlineHint))
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return "inlinehint";
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if (hasAttribute(Attribute::InReg))
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return "inreg";
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if (hasAttribute(Attribute::JumpTable))
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return "jumptable";
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if (hasAttribute(Attribute::MinSize))
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return "minsize";
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if (hasAttribute(Attribute::Naked))
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return "naked";
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if (hasAttribute(Attribute::Nest))
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return "nest";
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if (hasAttribute(Attribute::NoAlias))
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return "noalias";
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if (hasAttribute(Attribute::NoBuiltin))
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return "nobuiltin";
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if (hasAttribute(Attribute::NoCapture))
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return "nocapture";
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if (hasAttribute(Attribute::NoDuplicate))
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return "noduplicate";
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if (hasAttribute(Attribute::NoImplicitFloat))
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return "noimplicitfloat";
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if (hasAttribute(Attribute::NoInline))
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return "noinline";
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if (hasAttribute(Attribute::NonLazyBind))
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return "nonlazybind";
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if (hasAttribute(Attribute::NonNull))
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return "nonnull";
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if (hasAttribute(Attribute::NoRedZone))
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return "noredzone";
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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::OptimizeNone))
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return "optnone";
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if (hasAttribute(Attribute::OptimizeForSize))
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return "optsize";
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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::Returned))
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return "returned";
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if (hasAttribute(Attribute::ReturnsTwice))
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return "returns_twice";
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if (hasAttribute(Attribute::SExt))
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return "signext";
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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::StructRet))
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return "sret";
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if (hasAttribute(Attribute::SanitizeThread))
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return "sanitize_thread";
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if (hasAttribute(Attribute::SanitizeMemory))
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return "sanitize_memory";
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if (hasAttribute(Attribute::UWTable))
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return "uwtable";
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if (hasAttribute(Attribute::ZExt))
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return "zeroext";
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if (hasAttribute(Attribute::Cold))
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return "cold";
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// FIXME: These should be output like this:
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//
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// align=4
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// alignstack=8
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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 += (InAttrGrp) ? "=" : " ";
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Result += utostr(getValueAsInt());
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return Result;
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}
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auto AttrWithBytesToString = [&](const char *Name) {
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std::string Result;
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Result += Name;
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if (InAttrGrp) {
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Result += "=";
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Result += utostr(getValueAsInt());
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} else {
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Result += "(";
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Result += utostr(getValueAsInt());
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Result += ")";
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}
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return Result;
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};
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if (hasAttribute(Attribute::StackAlignment))
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return AttrWithBytesToString("alignstack");
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if (hasAttribute(Attribute::Dereferenceable))
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return AttrWithBytesToString("dereferenceable");
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if (hasAttribute(Attribute::DereferenceableOrNull))
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return AttrWithBytesToString("dereferenceable_or_null");
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// Convert target-dependent attributes to strings of the form:
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//
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// "kind"
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// "kind" = "value"
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//
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if (isStringAttribute()) {
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std::string Result;
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Result += (Twine('"') + getKindAsString() + Twine('"')).str();
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StringRef Val = pImpl->getValueAsString();
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if (Val.empty()) return Result;
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Result += ("=\"" + Val + Twine('"')).str();
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return Result;
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}
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llvm_unreachable("Unknown attribute");
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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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//===----------------------------------------------------------------------===//
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// AttributeImpl Definition
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//===----------------------------------------------------------------------===//
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// Pin the vtables to this file.
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AttributeImpl::~AttributeImpl() {}
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void EnumAttributeImpl::anchor() {}
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void IntAttributeImpl::anchor() {}
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void StringAttributeImpl::anchor() {}
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bool AttributeImpl::hasAttribute(Attribute::AttrKind A) const {
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if (isStringAttribute()) return false;
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return getKindAsEnum() == A;
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}
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bool AttributeImpl::hasAttribute(StringRef Kind) const {
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if (!isStringAttribute()) return false;
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return getKindAsString() == Kind;
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}
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Attribute::AttrKind AttributeImpl::getKindAsEnum() const {
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assert(isEnumAttribute() || isIntAttribute());
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return static_cast<const EnumAttributeImpl *>(this)->getEnumKind();
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}
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uint64_t AttributeImpl::getValueAsInt() const {
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assert(isIntAttribute());
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return static_cast<const IntAttributeImpl *>(this)->getValue();
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}
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StringRef AttributeImpl::getKindAsString() const {
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assert(isStringAttribute());
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return static_cast<const StringAttributeImpl *>(this)->getStringKind();
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}
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StringRef AttributeImpl::getValueAsString() const {
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assert(isStringAttribute());
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return static_cast<const StringAttributeImpl *>(this)->getStringValue();
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}
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bool AttributeImpl::operator<(const AttributeImpl &AI) const {
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// This sorts the attributes with Attribute::AttrKinds coming first (sorted
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// relative to their enum value) and then strings.
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if (isEnumAttribute()) {
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if (AI.isEnumAttribute()) return getKindAsEnum() < AI.getKindAsEnum();
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if (AI.isIntAttribute()) return true;
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if (AI.isStringAttribute()) return true;
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}
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if (isIntAttribute()) {
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if (AI.isEnumAttribute()) return false;
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if (AI.isIntAttribute()) return getValueAsInt() < AI.getValueAsInt();
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if (AI.isStringAttribute()) return true;
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}
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if (AI.isEnumAttribute()) return false;
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if (AI.isIntAttribute()) return false;
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if (getKindAsString() == AI.getKindAsString())
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return getValueAsString() < AI.getValueAsString();
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return getKindAsString() < AI.getKindAsString();
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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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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::SanitizeAddress: 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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case Attribute::SanitizeThread: return 1ULL << 36;
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case Attribute::SanitizeMemory: return 1ULL << 37;
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case Attribute::NoBuiltin: return 1ULL << 38;
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case Attribute::Returned: return 1ULL << 39;
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case Attribute::Cold: return 1ULL << 40;
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case Attribute::Builtin: return 1ULL << 41;
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case Attribute::OptimizeNone: return 1ULL << 42;
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case Attribute::InAlloca: return 1ULL << 43;
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case Attribute::NonNull: return 1ULL << 44;
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case Attribute::JumpTable: return 1ULL << 45;
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case Attribute::Dereferenceable:
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llvm_unreachable("dereferenceable attribute not supported in raw format");
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break;
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case Attribute::DereferenceableOrNull:
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llvm_unreachable("dereferenceable_or_null attribute not supported in raw "
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"format");
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break;
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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 nullptr;
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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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array_pod_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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// Coallocate entries after the AttributeSetNode itself.
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void *Mem = ::operator new(sizeof(AttributeSetNode) +
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sizeof(Attribute) * SortedAttrs.size());
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PA = new (Mem) 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 (iterator I = begin(), E = 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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bool AttributeSetNode::hasAttribute(StringRef Kind) const {
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for (iterator I = begin(), E = end(); I != E; ++I)
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if (I->hasAttribute(Kind))
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return true;
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|
return false;
|
|
}
|
|
|
|
Attribute AttributeSetNode::getAttribute(Attribute::AttrKind Kind) const {
|
|
for (iterator I = begin(), E = end(); I != E; ++I)
|
|
if (I->hasAttribute(Kind))
|
|
return *I;
|
|
return Attribute();
|
|
}
|
|
|
|
Attribute AttributeSetNode::getAttribute(StringRef Kind) const {
|
|
for (iterator I = begin(), E = end(); I != E; ++I)
|
|
if (I->hasAttribute(Kind))
|
|
return *I;
|
|
return Attribute();
|
|
}
|
|
|
|
unsigned AttributeSetNode::getAlignment() const {
|
|
for (iterator I = begin(), E = end(); I != E; ++I)
|
|
if (I->hasAttribute(Attribute::Alignment))
|
|
return I->getAlignment();
|
|
return 0;
|
|
}
|
|
|
|
unsigned AttributeSetNode::getStackAlignment() const {
|
|
for (iterator I = begin(), E = end(); I != E; ++I)
|
|
if (I->hasAttribute(Attribute::StackAlignment))
|
|
return I->getStackAlignment();
|
|
return 0;
|
|
}
|
|
|
|
uint64_t AttributeSetNode::getDereferenceableBytes() const {
|
|
for (iterator I = begin(), E = end(); I != E; ++I)
|
|
if (I->hasAttribute(Attribute::Dereferenceable))
|
|
return I->getDereferenceableBytes();
|
|
return 0;
|
|
}
|
|
|
|
std::string AttributeSetNode::getAsString(bool InAttrGrp) const {
|
|
std::string Str;
|
|
for (iterator I = begin(), E = end(); I != E; ++I) {
|
|
if (I != begin())
|
|
Str += ' ';
|
|
Str += I->getAsString(InAttrGrp);
|
|
}
|
|
return Str;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// AttributeSetImpl Definition
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
uint64_t AttributeSetImpl::Raw(unsigned Index) const {
|
|
for (unsigned I = 0, E = getNumAttributes(); I != E; ++I) {
|
|
if (getSlotIndex(I) != Index) continue;
|
|
const AttributeSetNode *ASN = getSlotNode(I);
|
|
uint64_t Mask = 0;
|
|
|
|
for (AttributeSetNode::iterator II = ASN->begin(),
|
|
IE = ASN->end(); II != IE; ++II) {
|
|
Attribute Attr = *II;
|
|
|
|
// This cannot handle string attributes.
|
|
if (Attr.isStringAttribute()) continue;
|
|
|
|
Attribute::AttrKind Kind = Attr.getKindAsEnum();
|
|
|
|
if (Kind == Attribute::Alignment)
|
|
Mask |= (Log2_32(ASN->getAlignment()) + 1) << 16;
|
|
else if (Kind == Attribute::StackAlignment)
|
|
Mask |= (Log2_32(ASN->getStackAlignment()) + 1) << 26;
|
|
else if (Kind == Attribute::Dereferenceable)
|
|
llvm_unreachable("dereferenceable not supported in bit mask");
|
|
else
|
|
Mask |= AttributeImpl::getAttrMask(Kind);
|
|
}
|
|
|
|
return Mask;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void AttributeSetImpl::dump() const {
|
|
AttributeSet(const_cast<AttributeSetImpl *>(this)).dump();
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// AttributeSet Construction and Mutation Methods
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
AttributeSet
|
|
AttributeSet::getImpl(LLVMContext &C,
|
|
ArrayRef<std::pair<unsigned, AttributeSetNode*> > Attrs) {
|
|
LLVMContextImpl *pImpl = C.pImpl;
|
|
FoldingSetNodeID ID;
|
|
AttributeSetImpl::Profile(ID, Attrs);
|
|
|
|
void *InsertPoint;
|
|
AttributeSetImpl *PA = pImpl->AttrsLists.FindNodeOrInsertPos(ID, InsertPoint);
|
|
|
|
// If we didn't find any existing attributes of the same shape then
|
|
// create a new one and insert it.
|
|
if (!PA) {
|
|
// Coallocate entries after the AttributeSetImpl itself.
|
|
void *Mem = ::operator new(sizeof(AttributeSetImpl) +
|
|
sizeof(std::pair<unsigned, AttributeSetNode *>) *
|
|
Attrs.size());
|
|
PA = new (Mem) AttributeSetImpl(C, Attrs);
|
|
pImpl->AttrsLists.InsertNode(PA, InsertPoint);
|
|
}
|
|
|
|
// Return the AttributesList that we found or created.
|
|
return AttributeSet(PA);
|
|
}
|
|
|
|
AttributeSet AttributeSet::get(LLVMContext &C,
|
|
ArrayRef<std::pair<unsigned, Attribute> > Attrs){
|
|
// If there are no attributes then return a null AttributesList pointer.
|
|
if (Attrs.empty())
|
|
return AttributeSet();
|
|
|
|
#ifndef NDEBUG
|
|
for (unsigned i = 0, e = Attrs.size(); i != e; ++i) {
|
|
assert((!i || Attrs[i-1].first <= Attrs[i].first) &&
|
|
"Misordered Attributes list!");
|
|
assert(!Attrs[i].second.hasAttribute(Attribute::None) &&
|
|
"Pointless attribute!");
|
|
}
|
|
#endif
|
|
|
|
// Create a vector if (unsigned, AttributeSetNode*) pairs from the attributes
|
|
// list.
|
|
SmallVector<std::pair<unsigned, AttributeSetNode*>, 8> AttrPairVec;
|
|
for (ArrayRef<std::pair<unsigned, Attribute> >::iterator I = Attrs.begin(),
|
|
E = Attrs.end(); I != E; ) {
|
|
unsigned Index = I->first;
|
|
SmallVector<Attribute, 4> AttrVec;
|
|
while (I != E && I->first == Index) {
|
|
AttrVec.push_back(I->second);
|
|
++I;
|
|
}
|
|
|
|
AttrPairVec.push_back(std::make_pair(Index,
|
|
AttributeSetNode::get(C, AttrVec)));
|
|
}
|
|
|
|
return getImpl(C, AttrPairVec);
|
|
}
|
|
|
|
AttributeSet AttributeSet::get(LLVMContext &C,
|
|
ArrayRef<std::pair<unsigned,
|
|
AttributeSetNode*> > Attrs) {
|
|
// If there are no attributes then return a null AttributesList pointer.
|
|
if (Attrs.empty())
|
|
return AttributeSet();
|
|
|
|
return getImpl(C, Attrs);
|
|
}
|
|
|
|
AttributeSet AttributeSet::get(LLVMContext &C, unsigned Index,
|
|
const AttrBuilder &B) {
|
|
if (!B.hasAttributes())
|
|
return AttributeSet();
|
|
|
|
// Add target-independent attributes.
|
|
SmallVector<std::pair<unsigned, Attribute>, 8> Attrs;
|
|
for (Attribute::AttrKind Kind = Attribute::None;
|
|
Kind != Attribute::EndAttrKinds; Kind = Attribute::AttrKind(Kind + 1)) {
|
|
if (!B.contains(Kind))
|
|
continue;
|
|
|
|
if (Kind == Attribute::Alignment)
|
|
Attrs.push_back(std::make_pair(Index, Attribute::
|
|
getWithAlignment(C, B.getAlignment())));
|
|
else if (Kind == Attribute::StackAlignment)
|
|
Attrs.push_back(std::make_pair(Index, Attribute::
|
|
getWithStackAlignment(C, B.getStackAlignment())));
|
|
else if (Kind == Attribute::Dereferenceable)
|
|
Attrs.push_back(std::make_pair(Index,
|
|
Attribute::getWithDereferenceableBytes(C,
|
|
B.getDereferenceableBytes())));
|
|
else if (Kind == Attribute::DereferenceableOrNull)
|
|
Attrs.push_back(
|
|
std::make_pair(Index, Attribute::getWithDereferenceableOrNullBytes(
|
|
C, B.getDereferenceableOrNullBytes())));
|
|
else
|
|
Attrs.push_back(std::make_pair(Index, Attribute::get(C, Kind)));
|
|
}
|
|
|
|
// Add target-dependent (string) attributes.
|
|
for (const AttrBuilder::td_type &TDA : B.td_attrs())
|
|
Attrs.push_back(
|
|
std::make_pair(Index, Attribute::get(C, TDA.first, TDA.second)));
|
|
|
|
return get(C, Attrs);
|
|
}
|
|
|
|
AttributeSet AttributeSet::get(LLVMContext &C, unsigned Index,
|
|
ArrayRef<Attribute::AttrKind> Kind) {
|
|
SmallVector<std::pair<unsigned, Attribute>, 8> Attrs;
|
|
for (ArrayRef<Attribute::AttrKind>::iterator I = Kind.begin(),
|
|
E = Kind.end(); I != E; ++I)
|
|
Attrs.push_back(std::make_pair(Index, Attribute::get(C, *I)));
|
|
return get(C, Attrs);
|
|
}
|
|
|
|
AttributeSet AttributeSet::get(LLVMContext &C, ArrayRef<AttributeSet> Attrs) {
|
|
if (Attrs.empty()) return AttributeSet();
|
|
if (Attrs.size() == 1) return Attrs[0];
|
|
|
|
SmallVector<std::pair<unsigned, AttributeSetNode*>, 8> AttrNodeVec;
|
|
AttributeSetImpl *A0 = Attrs[0].pImpl;
|
|
if (A0)
|
|
AttrNodeVec.append(A0->getNode(0), A0->getNode(A0->getNumAttributes()));
|
|
// Copy all attributes from Attrs into AttrNodeVec while keeping AttrNodeVec
|
|
// ordered by index. Because we know that each list in Attrs is ordered by
|
|
// index we only need to merge each successive list in rather than doing a
|
|
// full sort.
|
|
for (unsigned I = 1, E = Attrs.size(); I != E; ++I) {
|
|
AttributeSetImpl *AS = Attrs[I].pImpl;
|
|
if (!AS) continue;
|
|
SmallVector<std::pair<unsigned, AttributeSetNode *>, 8>::iterator
|
|
ANVI = AttrNodeVec.begin(), ANVE;
|
|
for (const AttributeSetImpl::IndexAttrPair
|
|
*AI = AS->getNode(0),
|
|
*AE = AS->getNode(AS->getNumAttributes());
|
|
AI != AE; ++AI) {
|
|
ANVE = AttrNodeVec.end();
|
|
while (ANVI != ANVE && ANVI->first <= AI->first)
|
|
++ANVI;
|
|
ANVI = AttrNodeVec.insert(ANVI, *AI) + 1;
|
|
}
|
|
}
|
|
|
|
return getImpl(C, AttrNodeVec);
|
|
}
|
|
|
|
AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Index,
|
|
Attribute::AttrKind Attr) const {
|
|
if (hasAttribute(Index, Attr)) return *this;
|
|
return addAttributes(C, Index, AttributeSet::get(C, Index, Attr));
|
|
}
|
|
|
|
AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Index,
|
|
StringRef Kind) const {
|
|
llvm::AttrBuilder B;
|
|
B.addAttribute(Kind);
|
|
return addAttributes(C, Index, AttributeSet::get(C, Index, B));
|
|
}
|
|
|
|
AttributeSet AttributeSet::addAttribute(LLVMContext &C, unsigned Index,
|
|
StringRef Kind, StringRef Value) const {
|
|
llvm::AttrBuilder B;
|
|
B.addAttribute(Kind, Value);
|
|
return addAttributes(C, Index, AttributeSet::get(C, Index, B));
|
|
}
|
|
|
|
AttributeSet AttributeSet::addAttributes(LLVMContext &C, unsigned Index,
|
|
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(Index);
|
|
unsigned NewAlign = Attrs.getParamAlignment(Index);
|
|
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) >= Index) {
|
|
if (getSlotIndex(I) == Index) 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, Index);
|
|
|
|
for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
|
|
if (Attrs.getSlotIndex(I) == Index) {
|
|
for (AttributeSetImpl::iterator II = Attrs.pImpl->begin(I),
|
|
IE = Attrs.pImpl->end(I); II != IE; ++II)
|
|
B.addAttribute(*II);
|
|
break;
|
|
}
|
|
|
|
AttrSet.push_back(AttributeSet::get(C, Index, 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 Index,
|
|
Attribute::AttrKind Attr) const {
|
|
if (!hasAttribute(Index, Attr)) return *this;
|
|
return removeAttributes(C, Index, AttributeSet::get(C, Index, Attr));
|
|
}
|
|
|
|
AttributeSet AttributeSet::removeAttributes(LLVMContext &C, unsigned Index,
|
|
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(Index, 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) >= Index) {
|
|
if (getSlotIndex(I) == Index) AS = getSlotAttributes(LastIndex++);
|
|
break;
|
|
}
|
|
LastIndex = I + 1;
|
|
AttrSet.push_back(getSlotAttributes(I));
|
|
}
|
|
|
|
// Now remove the attribute from the correct slot. There may already be an
|
|
// AttributeSet there.
|
|
AttrBuilder B(AS, Index);
|
|
|
|
for (unsigned I = 0, E = Attrs.pImpl->getNumAttributes(); I != E; ++I)
|
|
if (Attrs.getSlotIndex(I) == Index) {
|
|
B.removeAttributes(Attrs.pImpl->getSlotAttributes(I), Index);
|
|
break;
|
|
}
|
|
|
|
AttrSet.push_back(AttributeSet::get(C, Index, 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::addDereferenceableAttr(LLVMContext &C, unsigned Index,
|
|
uint64_t Bytes) const {
|
|
llvm::AttrBuilder B;
|
|
B.addDereferenceableAttr(Bytes);
|
|
return addAttributes(C, Index, AttributeSet::get(C, Index, B));
|
|
}
|
|
|
|
AttributeSet AttributeSet::addDereferenceableOrNullAttr(LLVMContext &C,
|
|
unsigned Index,
|
|
uint64_t Bytes) const {
|
|
llvm::AttrBuilder B;
|
|
B.addDereferenceableOrNullAttr(Bytes);
|
|
return addAttributes(C, Index, AttributeSet::get(C, Index, B));
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// AttributeSet Accessor Methods
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
LLVMContext &AttributeSet::getContext() const {
|
|
return pImpl->getContext();
|
|
}
|
|
|
|
AttributeSet AttributeSet::getParamAttributes(unsigned Index) const {
|
|
return pImpl && hasAttributes(Index) ?
|
|
AttributeSet::get(pImpl->getContext(),
|
|
ArrayRef<std::pair<unsigned, AttributeSetNode*> >(
|
|
std::make_pair(Index, getAttributes(Index)))) :
|
|
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::hasAttribute(unsigned Index, StringRef 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) return false;
|
|
|
|
for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I)
|
|
for (AttributeSetImpl::iterator II = pImpl->begin(I),
|
|
IE = pImpl->end(I); II != IE; ++II)
|
|
if (II->hasAttribute(Attr))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
Attribute AttributeSet::getAttribute(unsigned Index,
|
|
Attribute::AttrKind Kind) const {
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->getAttribute(Kind) : Attribute();
|
|
}
|
|
|
|
Attribute AttributeSet::getAttribute(unsigned Index,
|
|
StringRef Kind) const {
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->getAttribute(Kind) : Attribute();
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
uint64_t AttributeSet::getDereferenceableBytes(unsigned Index) const {
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->getDereferenceableBytes() : 0;
|
|
}
|
|
|
|
std::string AttributeSet::getAsString(unsigned Index,
|
|
bool InAttrGrp) const {
|
|
AttributeSetNode *ASN = getAttributes(Index);
|
|
return ASN ? ASN->getAsString(InAttrGrp) : std::string("");
|
|
}
|
|
|
|
/// \brief The attributes for the specified index are returned.
|
|
AttributeSetNode *AttributeSet::getAttributes(unsigned Index) const {
|
|
if (!pImpl) return nullptr;
|
|
|
|
// Loop through to find the attribute node we want.
|
|
for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I)
|
|
if (pImpl->getSlotIndex(I) == Index)
|
|
return pImpl->getSlotNode(I);
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
AttributeSet::iterator AttributeSet::begin(unsigned Slot) const {
|
|
if (!pImpl)
|
|
return ArrayRef<Attribute>().begin();
|
|
return pImpl->begin(Slot);
|
|
}
|
|
|
|
AttributeSet::iterator AttributeSet::end(unsigned Slot) const {
|
|
if (!pImpl)
|
|
return ArrayRef<Attribute>().end();
|
|
return pImpl->end(Slot);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// 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;
|
|
}
|
|
|
|
unsigned 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 Index)
|
|
: Attrs(0), Alignment(0), StackAlignment(0), DerefBytes(0),
|
|
DerefOrNullBytes(0) {
|
|
AttributeSetImpl *pImpl = AS.pImpl;
|
|
if (!pImpl) return;
|
|
|
|
for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I) {
|
|
if (pImpl->getSlotIndex(I) != Index) continue;
|
|
|
|
for (AttributeSetImpl::iterator II = pImpl->begin(I),
|
|
IE = pImpl->end(I); II != IE; ++II)
|
|
addAttribute(*II);
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
void AttrBuilder::clear() {
|
|
Attrs.reset();
|
|
Alignment = StackAlignment = DerefBytes = DerefOrNullBytes = 0;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addAttribute(Attribute::AttrKind Val) {
|
|
assert((unsigned)Val < Attribute::EndAttrKinds && "Attribute out of range!");
|
|
assert(Val != Attribute::Alignment && Val != Attribute::StackAlignment &&
|
|
Val != Attribute::Dereferenceable &&
|
|
"Adding integer attribute without adding a value!");
|
|
Attrs[Val] = true;
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addAttribute(Attribute Attr) {
|
|
if (Attr.isStringAttribute()) {
|
|
addAttribute(Attr.getKindAsString(), Attr.getValueAsString());
|
|
return *this;
|
|
}
|
|
|
|
Attribute::AttrKind Kind = Attr.getKindAsEnum();
|
|
Attrs[Kind] = true;
|
|
|
|
if (Kind == Attribute::Alignment)
|
|
Alignment = Attr.getAlignment();
|
|
else if (Kind == Attribute::StackAlignment)
|
|
StackAlignment = Attr.getStackAlignment();
|
|
else if (Kind == Attribute::Dereferenceable)
|
|
DerefBytes = Attr.getDereferenceableBytes();
|
|
else if (Kind == Attribute::DereferenceableOrNull)
|
|
DerefOrNullBytes = Attr.getDereferenceableOrNullBytes();
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addAttribute(StringRef A, StringRef V) {
|
|
TargetDepAttrs[A] = V;
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::removeAttribute(Attribute::AttrKind Val) {
|
|
assert((unsigned)Val < Attribute::EndAttrKinds && "Attribute out of range!");
|
|
Attrs[Val] = false;
|
|
|
|
if (Val == Attribute::Alignment)
|
|
Alignment = 0;
|
|
else if (Val == Attribute::StackAlignment)
|
|
StackAlignment = 0;
|
|
else if (Val == Attribute::Dereferenceable)
|
|
DerefBytes = 0;
|
|
else if (Val == Attribute::DereferenceableOrNull)
|
|
DerefOrNullBytes = 0;
|
|
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::removeAttributes(AttributeSet A, uint64_t Index) {
|
|
unsigned Slot = ~0U;
|
|
for (unsigned I = 0, E = A.getNumSlots(); I != E; ++I)
|
|
if (A.getSlotIndex(I) == Index) {
|
|
Slot = I;
|
|
break;
|
|
}
|
|
|
|
assert(Slot != ~0U && "Couldn't find index in AttributeSet!");
|
|
|
|
for (AttributeSet::iterator I = A.begin(Slot), E = A.end(Slot); I != E; ++I) {
|
|
Attribute Attr = *I;
|
|
if (Attr.isEnumAttribute() || Attr.isIntAttribute()) {
|
|
Attribute::AttrKind Kind = I->getKindAsEnum();
|
|
Attrs[Kind] = false;
|
|
|
|
if (Kind == Attribute::Alignment)
|
|
Alignment = 0;
|
|
else if (Kind == Attribute::StackAlignment)
|
|
StackAlignment = 0;
|
|
else if (Kind == Attribute::Dereferenceable)
|
|
DerefBytes = 0;
|
|
else if (Kind == Attribute::DereferenceableOrNull)
|
|
DerefOrNullBytes = 0;
|
|
} else {
|
|
assert(Attr.isStringAttribute() && "Invalid attribute type!");
|
|
std::map<std::string, std::string>::iterator
|
|
Iter = TargetDepAttrs.find(Attr.getKindAsString());
|
|
if (Iter != TargetDepAttrs.end())
|
|
TargetDepAttrs.erase(Iter);
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::removeAttribute(StringRef A) {
|
|
std::map<std::string, std::string>::iterator I = TargetDepAttrs.find(A);
|
|
if (I != TargetDepAttrs.end())
|
|
TargetDepAttrs.erase(I);
|
|
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[Attribute::Alignment] = true;
|
|
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[Attribute::StackAlignment] = true;
|
|
StackAlignment = Align;
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addDereferenceableAttr(uint64_t Bytes) {
|
|
if (Bytes == 0) return *this;
|
|
|
|
Attrs[Attribute::Dereferenceable] = true;
|
|
DerefBytes = Bytes;
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addDereferenceableOrNullAttr(uint64_t Bytes) {
|
|
if (Bytes == 0)
|
|
return *this;
|
|
|
|
Attrs[Attribute::DereferenceableOrNull] = true;
|
|
DerefOrNullBytes = Bytes;
|
|
return *this;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::merge(const AttrBuilder &B) {
|
|
// FIXME: What if both have alignments, but they don't match?!
|
|
if (!Alignment)
|
|
Alignment = B.Alignment;
|
|
|
|
if (!StackAlignment)
|
|
StackAlignment = B.StackAlignment;
|
|
|
|
if (!DerefBytes)
|
|
DerefBytes = B.DerefBytes;
|
|
|
|
Attrs |= B.Attrs;
|
|
|
|
for (td_const_iterator I = B.TargetDepAttrs.begin(),
|
|
E = B.TargetDepAttrs.end(); I != E; ++I)
|
|
TargetDepAttrs[I->first] = I->second;
|
|
|
|
return *this;
|
|
}
|
|
|
|
bool AttrBuilder::contains(StringRef A) const {
|
|
return TargetDepAttrs.find(A) != TargetDepAttrs.end();
|
|
}
|
|
|
|
bool AttrBuilder::hasAttributes() const {
|
|
return !Attrs.none() || !TargetDepAttrs.empty();
|
|
}
|
|
|
|
bool AttrBuilder::hasAttributes(AttributeSet A, uint64_t Index) const {
|
|
unsigned Slot = ~0U;
|
|
for (unsigned I = 0, E = A.getNumSlots(); I != E; ++I)
|
|
if (A.getSlotIndex(I) == Index) {
|
|
Slot = I;
|
|
break;
|
|
}
|
|
|
|
assert(Slot != ~0U && "Couldn't find the index!");
|
|
|
|
for (AttributeSet::iterator I = A.begin(Slot), E = A.end(Slot);
|
|
I != E; ++I) {
|
|
Attribute Attr = *I;
|
|
if (Attr.isEnumAttribute() || Attr.isIntAttribute()) {
|
|
if (Attrs[I->getKindAsEnum()])
|
|
return true;
|
|
} else {
|
|
assert(Attr.isStringAttribute() && "Invalid attribute kind!");
|
|
return TargetDepAttrs.find(Attr.getKindAsString())!=TargetDepAttrs.end();
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool AttrBuilder::hasAlignmentAttr() const {
|
|
return Alignment != 0;
|
|
}
|
|
|
|
bool AttrBuilder::operator==(const AttrBuilder &B) {
|
|
if (Attrs != B.Attrs)
|
|
return false;
|
|
|
|
for (td_const_iterator I = TargetDepAttrs.begin(),
|
|
E = TargetDepAttrs.end(); I != E; ++I)
|
|
if (B.TargetDepAttrs.find(I->first) == B.TargetDepAttrs.end())
|
|
return false;
|
|
|
|
return Alignment == B.Alignment && StackAlignment == B.StackAlignment &&
|
|
DerefBytes == B.DerefBytes;
|
|
}
|
|
|
|
AttrBuilder &AttrBuilder::addRawValue(uint64_t Val) {
|
|
// FIXME: Remove this in 4.0.
|
|
if (!Val) return *this;
|
|
|
|
for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
|
|
I = Attribute::AttrKind(I + 1)) {
|
|
if (I == Attribute::Dereferenceable ||
|
|
I == Attribute::DereferenceableOrNull)
|
|
continue;
|
|
if (uint64_t A = (Val & AttributeImpl::getAttrMask(I))) {
|
|
Attrs[I] = true;
|
|
|
|
if (I == Attribute::Alignment)
|
|
Alignment = 1ULL << ((A >> 16) - 1);
|
|
else if (I == Attribute::StackAlignment)
|
|
StackAlignment = 1ULL << ((A >> 26)-1);
|
|
}
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// AttributeFuncs Function Defintions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// \brief Which attributes cannot be applied to a type.
|
|
AttributeSet AttributeFuncs::typeIncompatible(Type *Ty, uint64_t Index) {
|
|
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::NonNull)
|
|
.addDereferenceableAttr(1) // the int here is ignored
|
|
.addDereferenceableOrNullAttr(1) // the int here is ignored
|
|
.addAttribute(Attribute::ReadNone)
|
|
.addAttribute(Attribute::ReadOnly)
|
|
.addAttribute(Attribute::StructRet)
|
|
.addAttribute(Attribute::InAlloca);
|
|
|
|
return AttributeSet::get(Ty->getContext(), Index, Incompatible);
|
|
}
|