Import prebuilt clang toolchain for linux.
diff --git a/linux-x64/clang/include/llvm/FuzzMutate/RandomIRBuilder.h b/linux-x64/clang/include/llvm/FuzzMutate/RandomIRBuilder.h
new file mode 100644
index 0000000..5cf3f0b
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+++ b/linux-x64/clang/include/llvm/FuzzMutate/RandomIRBuilder.h
@@ -0,0 +1,62 @@
+//===-- Mutator.h - Utils for randomly mutation IR --------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Provides the Mutator class, which is used to mutate IR for fuzzing.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_FUZZMUTATE_RANDOMIRBUILDER_H
+#define LLVM_FUZZMUTATE_RANDOMIRBUILDER_H
+
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/FuzzMutate/IRMutator.h"
+#include "llvm/FuzzMutate/Random.h"
+#include <random>
+
+namespace llvm {
+
+using RandomEngine = std::mt19937;
+
+struct RandomIRBuilder {
+ RandomEngine Rand;
+ SmallVector<Type *, 16> KnownTypes;
+
+ RandomIRBuilder(int Seed, ArrayRef<Type *> AllowedTypes)
+ : Rand(Seed), KnownTypes(AllowedTypes.begin(), AllowedTypes.end()) {}
+
+ // TODO: Try to make this a bit less of a random mishmash of functions.
+
+ /// Find a "source" for some operation, which will be used in one of the
+ /// operation's operands. This either selects an instruction in \c Insts or
+ /// returns some new arbitrary Value.
+ Value *findOrCreateSource(BasicBlock &BB, ArrayRef<Instruction *> Insts);
+ /// Find a "source" for some operation, which will be used in one of the
+ /// operation's operands. This either selects an instruction in \c Insts that
+ /// matches \c Pred, or returns some new Value that matches \c Pred. The
+ /// values in \c Srcs should be source operands that have already been
+ /// selected.
+ Value *findOrCreateSource(BasicBlock &BB, ArrayRef<Instruction *> Insts,
+ ArrayRef<Value *> Srcs, fuzzerop::SourcePred Pred);
+ /// Create some Value suitable as a source for some operation.
+ Value *newSource(BasicBlock &BB, ArrayRef<Instruction *> Insts,
+ ArrayRef<Value *> Srcs, fuzzerop::SourcePred Pred);
+ /// Find a viable user for \c V in \c Insts, which should all be contained in
+ /// \c BB. This may also create some new instruction in \c BB and use that.
+ void connectToSink(BasicBlock &BB, ArrayRef<Instruction *> Insts, Value *V);
+ /// Create a user for \c V in \c BB.
+ void newSink(BasicBlock &BB, ArrayRef<Instruction *> Insts, Value *V);
+ Value *findPointer(BasicBlock &BB, ArrayRef<Instruction *> Insts,
+ ArrayRef<Value *> Srcs, fuzzerop::SourcePred Pred);
+ Type *chooseType(LLVMContext &Context, ArrayRef<Value *> Srcs,
+ fuzzerop::SourcePred Pred);
+};
+
+} // end llvm namespace
+
+#endif // LLVM_FUZZMUTATE_RANDOMIRBUILDER_H