Add the integer value of the ConstantInt instead of the Constant* value.

This is causing some problems. The root cause is unknown at this time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171923 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 399 insertions, 0 deletions

diff --git a/include/llvm/Attributes.h b/include/llvm/Attributes.h
new file mode 100644
index 0000000000..76e8d71c79
--- /dev/null
+++ b/include/llvm/Attributes.h
@@ -0,0 +1,399 @@
+//===-- llvm/Attributes.h - Container for Attributes ------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file contains the simple types necessary to represent the
+/// attributes associated with functions and their calls.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ATTRIBUTES_H
+#define LLVM_ATTRIBUTES_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/Support/MathExtras.h"
+#include <cassert>
+#include <string>
+
+namespace llvm {
+
+class AttrBuilder;
+class AttributeImpl;
+class LLVMContext;
+class Type;
+
+//===----------------------------------------------------------------------===//
+/// \class
+/// \brief Functions, function parameters, and return types can have attributes
+/// to indicate how they should be treated by optimizations and code
+/// generation. This class represents one of those attributes. It's light-weight
+/// and should be passed around by-value.
+class Attribute {
+public:
+  /// This enumeration lists the attributes that can be associated with
+  /// parameters, function results or the function itself.
+  ///
+  /// Note: uwtable is about the ABI or the user mandating an entry in the
+  /// unwind table. The nounwind attribute is about an exception passing by the
+  /// function.
+  ///
+  /// In a theoretical system that uses tables for profiling and sjlj for
+  /// exceptions, they would be fully independent. In a normal system that uses
+  /// tables for both, the semantics are:
+  ///
+  /// nil                = Needs an entry because an exception might pass by.
+  /// nounwind           = No need for an entry
+  /// uwtable            = Needs an entry because the ABI says so and because
+  ///                      an exception might pass by.
+  /// uwtable + nounwind = Needs an entry because the ABI says so.
+
+  enum AttrKind {
+    // IR-Level Attributes
+    None,                  ///< No attributes have been set
+    AddressSafety,         ///< Address safety checking is on.
+    Alignment,             ///< Alignment of parameter (5 bits)
+                           ///< stored as log2 of alignment with +1 bias
+                           ///< 0 means unaligned (different from align(1))
+    AlwaysInline,          ///< inline=always
+    ByVal,                 ///< Pass structure by value
+    InlineHint,            ///< Source said inlining was desirable
+    InReg,                 ///< Force argument to be passed in register
+    MinSize,               ///< Function must be optimized for size first
+    Naked,                 ///< Naked function
+    Nest,                  ///< Nested function static chain
+    NoAlias,               ///< Considered to not alias after call
+    NoCapture,             ///< Function creates no aliases of pointer
+    NoDuplicate,           ///< Call cannot be duplicated
+    NoImplicitFloat,       ///< Disable implicit floating point insts
+    NoInline,              ///< inline=never
+    NonLazyBind,           ///< Function is called early and/or
+                           ///< often, so lazy binding isn't worthwhile
+    NoRedZone,             ///< Disable redzone
+    NoReturn,              ///< Mark the function as not returning
+    NoUnwind,              ///< Function doesn't unwind stack
+    OptimizeForSize,       ///< opt_size
+    ReadNone,              ///< Function does not access memory
+    ReadOnly,              ///< Function only reads from memory
+    ReturnsTwice,          ///< Function can return twice
+    SExt,                  ///< Sign extended before/after call
+    StackAlignment,        ///< Alignment of stack for function (3 bits)
+                           ///< stored as log2 of alignment with +1 bias 0
+                           ///< means unaligned (different from
+                           ///< alignstack=(1))
+    StackProtect,          ///< Stack protection.
+    StackProtectReq,       ///< Stack protection required.
+    StructRet,             ///< Hidden pointer to structure to return
+    UWTable,               ///< Function must be in a unwind table
+    ZExt                   ///< Zero extended before/after call
+  };
+private:
+  AttributeImpl *pImpl;
+  Attribute(AttributeImpl *A) : pImpl(A) {}
+public:
+  Attribute() : pImpl(0) {}
+
+  /// \brief Return a uniquified Attribute object. This takes the uniquified
+  /// value from the Builder and wraps it in the Attribute class.
+  static Attribute get(LLVMContext &Context, ArrayRef<AttrKind> Vals);
+  static Attribute get(LLVMContext &Context, AttrBuilder &B);
+
+  /// \brief Return true if the attribute is present.
+  bool hasAttribute(AttrKind Val) const;
+
+  /// \brief Return true if attributes exist
+  bool hasAttributes() const;
+
+  /// \brief Return true if the attributes are a non-null intersection.
+  bool hasAttributes(const Attribute &A) const;
+
+  /// \brief Returns the alignment field of an attribute as a byte alignment
+  /// value.
+  unsigned getAlignment() const;
+
+  /// \brief Returns the stack alignment field of an attribute as a byte
+  /// alignment value.
+  unsigned getStackAlignment() const;
+
+  bool operator==(AttrKind K) const;
+  bool operator!=(AttrKind K) const;
+
+  // FIXME: Remove these 'operator' methods.
+  bool operator==(const Attribute &A) const {
+    return pImpl == A.pImpl;
+  }
+  bool operator!=(const Attribute &A) const {
+    return pImpl != A.pImpl;
+  }
+
+  uint64_t getBitMask() const;
+
+  /// \brief Which attributes cannot be applied to a type.
+  static Attribute typeIncompatible(Type *Ty);
+
+  /// \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.
+  static uint64_t encodeLLVMAttributesForBitcode(Attribute Attrs);
+
+  /// \brief This returns an attribute bitset containing the LLVM attributes
+  /// that have been decoded from the given integer.  This function must stay in
+  /// sync with 'encodeLLVMAttributesForBitcode'.
+  static Attribute decodeLLVMAttributesForBitcode(LLVMContext &C,
+                                                  uint64_t EncodedAttrs);
+
+  /// \brief The Attribute is converted to a string of equivalent mnemonic. This
+  /// is, presumably, for writing out the mnemonics for the assembly writer.
+  std::string getAsString() const;
+};
+
+//===----------------------------------------------------------------------===//
+/// \class
+/// \brief This class is used in conjunction with the Attribute::get method to
+/// create an Attribute object. The object itself is uniquified. The Builder's
+/// value, however, is not. So this can be used as a quick way to test for
+/// equality, presence of attributes, etc.
+class AttrBuilder {
+  uint64_t Bits;
+public:
+  AttrBuilder() : Bits(0) {}
+  explicit AttrBuilder(uint64_t B) : Bits(B) {}
+  AttrBuilder(const Attribute &A) : Bits(A.getBitMask()) {}
+
+  void clear() { Bits = 0; }
+
+  /// addAttribute - Add an attribute to the builder.
+  AttrBuilder &addAttribute(Attribute::AttrKind Val);
+
+  /// removeAttribute - Remove an attribute from the builder.
+  AttrBuilder &removeAttribute(Attribute::AttrKind Val);
+
+  /// addAttribute - Add the attributes from A to the builder.
+  AttrBuilder &addAttributes(const Attribute &A);
+
+  /// removeAttribute - Remove the attributes from A from the builder.
+  AttrBuilder &removeAttributes(const Attribute &A);
+
+  /// \brief Return true if the builder has the specified attribute.
+  bool contains(Attribute::AttrKind A) const;
+
+  /// hasAttributes - Return true if the builder has IR-level attributes.
+  bool hasAttributes() const;
+
+  /// hasAttributes - Return true if the builder has any attribute that's in the
+  /// specified attribute.
+  bool hasAttributes(const Attribute &A) const;
+
+  /// hasAlignmentAttr - Return true if the builder has an alignment attribute.
+  bool hasAlignmentAttr() const;
+
+  /// getAlignment - Retrieve the alignment attribute, if it exists.
+  uint64_t getAlignment() const;
+
+  /// getStackAlignment - Retrieve the stack alignment attribute, if it exists.
+  uint64_t getStackAlignment() const;
+
+  /// addAlignmentAttr - This turns an int alignment (which must be a power of
+  /// 2) into the form used internally in Attribute.
+  AttrBuilder &addAlignmentAttr(unsigned Align);
+
+  /// addStackAlignmentAttr - This turns an int stack alignment (which must be a
+  /// power of 2) into the form used internally in Attribute.
+  AttrBuilder &addStackAlignmentAttr(unsigned Align);
+
+  /// addRawValue - Add the raw value to the internal representation.
+  /// N.B. This should be used ONLY for decoding LLVM bitcode!
+  AttrBuilder &addRawValue(uint64_t Val);
+
+  /// @brief Remove attributes that are used on functions only.
+  void removeFunctionOnlyAttrs() {
+    removeAttribute(Attribute::NoReturn)
+      .removeAttribute(Attribute::NoUnwind)
+      .removeAttribute(Attribute::ReadNone)
+      .removeAttribute(Attribute::ReadOnly)
+      .removeAttribute(Attribute::NoInline)
+      .removeAttribute(Attribute::AlwaysInline)
+      .removeAttribute(Attribute::OptimizeForSize)
+      .removeAttribute(Attribute::StackProtect)
+      .removeAttribute(Attribute::StackProtectReq)
+      .removeAttribute(Attribute::NoRedZone)
+      .removeAttribute(Attribute::NoImplicitFloat)
+      .removeAttribute(Attribute::Naked)
+      .removeAttribute(Attribute::InlineHint)
+      .removeAttribute(Attribute::StackAlignment)
+      .removeAttribute(Attribute::UWTable)
+      .removeAttribute(Attribute::NonLazyBind)
+      .removeAttribute(Attribute::ReturnsTwice)
+      .removeAttribute(Attribute::AddressSafety)
+      .removeAttribute(Attribute::MinSize)
+      .removeAttribute(Attribute::NoDuplicate);
+  }
+
+  uint64_t getBitMask() const { return Bits; }
+
+  bool operator==(const AttrBuilder &B) {
+    return Bits == B.Bits;
+  }
+  bool operator!=(const AttrBuilder &B) {
+    return Bits != B.Bits;
+  }
+};
+
+//===----------------------------------------------------------------------===//
+/// \class
+/// \brief This is just a pair of values to associate a set of attributes with
+/// an index.
+struct AttributeWithIndex {
+  Attribute Attrs;  ///< The attributes that are set, or'd together.
+  unsigned Index;   ///< Index of the parameter for which the attributes apply.
+                    ///< Index 0 is used for return value attributes.
+                    ///< Index ~0U is used for function attributes.
+
+  static AttributeWithIndex get(LLVMContext &C, unsigned Idx,
+                                ArrayRef<Attribute::AttrKind> Attrs) {
+    return get(Idx, Attribute::get(C, Attrs));
+  }
+  static AttributeWithIndex get(unsigned Idx, Attribute Attrs) {
+    AttributeWithIndex P;
+    P.Index = Idx;
+    P.Attrs = Attrs;
+    return P;
+  }
+};
+
+//===----------------------------------------------------------------------===//
+// AttributeSet Smart Pointer
+//===----------------------------------------------------------------------===//
+
+class AttributeSetImpl;
+
+//===----------------------------------------------------------------------===//
+/// \class
+/// \brief This class manages the ref count for the opaque AttributeSetImpl
+/// object and provides accessors for it.
+class AttributeSet {
+public:
+  enum AttrIndex {
+    ReturnIndex = 0U,
+    FunctionIndex = ~0U
+  };
+private:
+  /// \brief The attributes that we are managing.  This can be null to represent
+  /// the empty attributes list.
+  AttributeSetImpl *AttrList;
+
+  /// \brief The attributes for the specified index are returned.  Attributes
+  /// for the result are denoted with Idx = 0.
+  Attribute getAttributes(unsigned Idx) const;
+
+  explicit AttributeSet(AttributeSetImpl *LI) : AttrList(LI) {}
+public:
+  AttributeSet() : AttrList(0) {}
+  AttributeSet(const AttributeSet &P) : AttrList(P.AttrList) {}
+  const AttributeSet &operator=(const AttributeSet &RHS);
+
+  //===--------------------------------------------------------------------===//
+  // Attribute List Construction and Mutation
+  //===--------------------------------------------------------------------===//
+
+  /// \brief Return an AttributeSet with the specified parameters in it.
+  static AttributeSet get(LLVMContext &C, ArrayRef<AttributeWithIndex> Attrs);
+
+  /// \brief Add the specified attribute at the specified index to this
+  /// attribute list.  Since attribute lists are immutable, this returns the new
+  /// list.
+  AttributeSet addAttr(LLVMContext &C, unsigned Idx, Attribute Attrs) const;
+
+  /// \brief Remove the specified attribute at the specified index from this
+  /// attribute list.  Since attribute lists are immutable, this returns the new
+  /// list.
+  AttributeSet removeAttr(LLVMContext &C, unsigned Idx, Attribute Attrs) const;
+
+  //===--------------------------------------------------------------------===//
+  // Attribute Set Accessors
+  //===--------------------------------------------------------------------===//
+
+  /// \brief The attributes for the specified index are returned.
+  Attribute getParamAttributes(unsigned Idx) const {
+    return getAttributes(Idx);
+  }
+
+  /// \brief The attributes for the ret value are returned.
+  Attribute getRetAttributes() const {
+    return getAttributes(ReturnIndex);
+  }
+
+  /// \brief The function attributes are returned.
+  Attribute getFnAttributes() const {
+    return getAttributes(FunctionIndex);
+  }
+
+  /// \brief Return the alignment for the specified function parameter.
+  unsigned getParamAlignment(unsigned Idx) const {
+    return getAttributes(Idx).getAlignment();
+  }
+
+  /// \brief Return true if the attribute exists at the given index.
+  bool hasAttribute(unsigned Index, Attribute::AttrKind Kind) const;
+
+  /// \brief Return true if attribute exists at the given index.
+  bool hasAttributes(unsigned Index) const;
+
+  /// \brief Get the stack alignment.
+  unsigned getStackAlignment(unsigned Index) const;
+
+  /// \brief Return the attributes at the index as a string.
+  std::string getAsString(unsigned Index) const;
+
+  uint64_t getBitMask(unsigned Index) const;
+
+  /// \brief Return true if the specified attribute is set for at least one
+  /// parameter or for the return value.
+  bool hasAttrSomewhere(Attribute::AttrKind Attr) const;
+
+  /// operator==/!= - Provide equality predicates.
+  bool operator==(const AttributeSet &RHS) const {
+    return AttrList == RHS.AttrList;
+  }
+  bool operator!=(const AttributeSet &RHS) const {
+    return AttrList != RHS.AttrList;
+  }
+
+  //===--------------------------------------------------------------------===//
+  // Attribute Set Introspection
+  //===--------------------------------------------------------------------===//
+
+  /// \brief Return a raw pointer that uniquely identifies this attribute list.
+  void *getRawPointer() const {
+    return AttrList;
+  }
+
+  // Attributes are stored as a dense set of slots, where there is one slot for
+  // each argument that has an attribute.  This allows walking over the dense
+  // set instead of walking the sparse list of attributes.
+
+  /// \brief Return true if there are no attributes.
+  bool isEmpty() const {
+    return AttrList == 0;
+  }
+
+  /// \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 getNumSlots() const;
+
+  /// \brief Return the AttributeWithIndex at the specified slot.  This holds a
+  /// index number plus a set of attributes.
+  const AttributeWithIndex &getSlot(unsigned Slot) const;
+
+  void dump() const;
+};
+
+} // end llvm namespace
+
+#endif