Subzero: Add necessary PNaCl files for standalone build.

pnacl-llvm/include/llvm/Bitcode/NaCl/NaClBitcodeDecoders.h

Index: pnacl-llvm/include/llvm/Bitcode/NaCl/NaClBitcodeDecoders.h
diff --git a/pnacl-llvm/include/llvm/Bitcode/NaCl/NaClBitcodeDecoders.h b/pnacl-llvm/include/llvm/Bitcode/NaCl/NaClBitcodeDecoders.h
new file mode 100644
index 0000000000000000000000000000000000000000..a3250e0c2219a7a787b2fb757872cfc137516454
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+++ b/pnacl-llvm/include/llvm/Bitcode/NaCl/NaClBitcodeDecoders.h
@@ -0,0 +1,74 @@
+//===- NaClBitcodeDecoders.h -------------------------------------*- C++ -*-===//
+//     Functions used to decode values in PNaCl bitcode files.
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header file provides a public API for value decoders defined in
+// the PNaCl bitcode reader.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BITCODE_NACL_NACLBITCODEDECODERS_H
+#define LLVM_BITCODE_NACL_NACLBITCODEDECODERS_H
+
+#include "llvm/IR/CallingConv.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/InstrTypes.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/Bitcode/NaCl/NaClLLVMBitCodes.h"
+
+namespace llvm {
+namespace naclbitc {
+
+/// Converts the NaCl (bitcode file) cast opcode to the corresponding
+/// LLVM cast opcode. Returns true if the conversion
+/// succeeds. Otherwise sets LLVMOpcode to Instruction::BitCast and
+/// returns false.
+bool DecodeCastOpcode(uint64_t NaClOpcode,
+                      Instruction::CastOps &LLVMOpcode);
+
+/// Converts the NaCl (bitcode file) linkage type to the corresponding
+/// LLVM linkage type. Returns true if the conversion
+/// succeeds. Otherwise sets LLVMLinkage to
+/// GlobalValue::InternalLinkage and returns false.
+bool DecodeLinkage(uint64_t NaClLinkage,
+                   GlobalValue::LinkageTypes &LLVMLinkage);
+
+/// Converts the NaCl (bitcode file) binary opcode to the
+/// corresponding LLVM binary opcode, assuming that the operator
+/// operates on OpType.  Returns true if the conversion
+/// succeeds. Otherwise sets LLVMOpcode to Instruction::Add and
+/// returns false.
+bool DecodeBinaryOpcode(uint64_t NaClOpcode, Type *OpType,
+                        Instruction::BinaryOps &LLVMOpcode);
+
+/// Converts the NaCl (bitcode file) calling convention value to the
+/// corresponding LLVM calling conventions. Returns true if the
+/// conversion succeeds. Otherwise sets LLVMCallingConv to
+/// CallingConv::C and returns false.
+bool DecodeCallingConv(uint64_t NaClCallingConv,
+                       CallingConv::ID &LLVMCallingConv);
+
+/// Converts the NaCl (bitcode file) float comparison predicate to the
+/// corresponding LLVM float comparison predicate. Returns true if the
+/// conversion succeeds. Otherwise sets LLVMPredicate to
+/// CmpInst::FCMP_FALSE and returns false.
+bool DecodeFcmpPredicate(uint64_t NaClPredicate,
+                         CmpInst::Predicate &LLVMPredicate);
+
+/// Converts the NaCl (bitcode file) integer comparison predicate to
+/// the corresponding LLVM integer comparison predicate. Returns true
+/// if the conversion succeeds. Otherwise sets LLVMPredicate to
+/// CmpInst::ICMP_EQ and returns false.
+bool DecodeIcmpPredicate(uint64_t NaClPredicate,
+                         CmpInst::Predicate &LLVMPredicate);
+
+}
+}
+
+#endif