Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/CodeGen/Analysis.h b/linux-x64/clang/include/llvm/CodeGen/Analysis.h
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+//===- CodeGen/Analysis.h - CodeGen LLVM IR Analysis Utilities --*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares several CodeGen-specific LLVM IR analysis utilities.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_ANALYSIS_H
+#define LLVM_CODEGEN_ANALYSIS_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/CodeGen/ISDOpcodes.h"
+#include "llvm/IR/CallSite.h"
+#include "llvm/IR/InlineAsm.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/Support/CodeGen.h"
+
+namespace llvm {
+class GlobalValue;
+class MachineBasicBlock;
+class MachineFunction;
+class TargetLoweringBase;
+class TargetLowering;
+class TargetMachine;
+class SDNode;
+class SDValue;
+class SelectionDAG;
+struct EVT;
+
+/// \brief Compute the linearized index of a member in a nested
+/// aggregate/struct/array.
+///
+/// Given an LLVM IR aggregate type and a sequence of insertvalue or
+/// extractvalue indices that identify a member, return the linearized index of
+/// the start of the member, i.e the number of element in memory before the
+/// sought one. This is disconnected from the number of bytes.
+///
+/// \param Ty is the type indexed by \p Indices.
+/// \param Indices is an optional pointer in the indices list to the current
+/// index.
+/// \param IndicesEnd is the end of the indices list.
+/// \param CurIndex is the current index in the recursion.
+///
+/// \returns \p CurIndex plus the linear index in \p Ty the indices list.
+unsigned ComputeLinearIndex(Type *Ty,
+ const unsigned *Indices,
+ const unsigned *IndicesEnd,
+ unsigned CurIndex = 0);
+
+inline unsigned ComputeLinearIndex(Type *Ty,
+ ArrayRef<unsigned> Indices,
+ unsigned CurIndex = 0) {
+ return ComputeLinearIndex(Ty, Indices.begin(), Indices.end(), CurIndex);
+}
+
+/// ComputeValueVTs - Given an LLVM IR type, compute a sequence of
+/// EVTs that represent all the individual underlying
+/// non-aggregate types that comprise it.
+///
+/// If Offsets is non-null, it points to a vector to be filled in
+/// with the in-memory offsets of each of the individual values.
+///
+void ComputeValueVTs(const TargetLowering &TLI, const DataLayout &DL, Type *Ty,
+ SmallVectorImpl<EVT> &ValueVTs,
+ SmallVectorImpl<uint64_t> *Offsets = nullptr,
+ uint64_t StartingOffset = 0);
+
+/// ExtractTypeInfo - Returns the type info, possibly bitcast, encoded in V.
+GlobalValue *ExtractTypeInfo(Value *V);
+
+/// hasInlineAsmMemConstraint - Return true if the inline asm instruction being
+/// processed uses a memory 'm' constraint.
+bool hasInlineAsmMemConstraint(InlineAsm::ConstraintInfoVector &CInfos,
+ const TargetLowering &TLI);
+
+/// getFCmpCondCode - Return the ISD condition code corresponding to
+/// the given LLVM IR floating-point condition code. This includes
+/// consideration of global floating-point math flags.
+///
+ISD::CondCode getFCmpCondCode(FCmpInst::Predicate Pred);
+
+/// getFCmpCodeWithoutNaN - Given an ISD condition code comparing floats,
+/// return the equivalent code if we're allowed to assume that NaNs won't occur.
+ISD::CondCode getFCmpCodeWithoutNaN(ISD::CondCode CC);
+
+/// getICmpCondCode - Return the ISD condition code corresponding to
+/// the given LLVM IR integer condition code.
+///
+ISD::CondCode getICmpCondCode(ICmpInst::Predicate Pred);
+
+/// Test if the given instruction is in a position to be optimized
+/// with a tail-call. This roughly means that it's in a block with
+/// a return and there's nothing that needs to be scheduled
+/// between it and the return.
+///
+/// This function only tests target-independent requirements.
+bool isInTailCallPosition(ImmutableCallSite CS, const TargetMachine &TM);
+
+/// Test if given that the input instruction is in the tail call position, if
+/// there is an attribute mismatch between the caller and the callee that will
+/// inhibit tail call optimizations.
+/// \p AllowDifferingSizes is an output parameter which, if forming a tail call
+/// is permitted, determines whether it's permitted only if the size of the
+/// caller's and callee's return types match exactly.
+bool attributesPermitTailCall(const Function *F, const Instruction *I,
+ const ReturnInst *Ret,
+ const TargetLoweringBase &TLI,
+ bool *AllowDifferingSizes = nullptr);
+
+/// Test if given that the input instruction is in the tail call position if the
+/// return type or any attributes of the function will inhibit tail call
+/// optimization.
+bool returnTypeIsEligibleForTailCall(const Function *F, const Instruction *I,
+ const ReturnInst *Ret,
+ const TargetLoweringBase &TLI);
+
+DenseMap<const MachineBasicBlock *, int>
+getFuncletMembership(const MachineFunction &MF);
+
+} // End llvm namespace
+
+#endif