[PowerPC][NFC] Split PPCMCCodeEmitter into header and cpp file.

This is further cleanup for PPCMCCodeEmitter. The class had been contained
within the cpp file alone. Now it has been split up between a header file and
a cpp file which allows other classes to make use of the functions in this class
if required.

llvm-svn: 347428

diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
index 929bb4f..8c15ade 100644 (file)
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp
@@ -13,18 +13,13 @@
 
 #include "MCTargetDesc/PPCFixupKinds.h"
 #include "PPCInstrInfo.h"
+#include "PPCMCCodeEmitter.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/Triple.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCCodeEmitter.h"
-#include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCFixup.h"
-#include "llvm/MC/MCInst.h"
 #include "llvm/MC/MCInstrDesc.h"
-#include "llvm/MC/MCInstrInfo.h"
 #include "llvm/MC/MCRegisterInfo.h"
-#include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/EndianStream.h"
 #include "llvm/Support/ErrorHandling.h"
@@ -39,91 +34,6 @@ using namespace llvm;
 
 STATISTIC(MCNumEmitted, "Number of MC instructions emitted");
 
-namespace {
-
-class PPCMCCodeEmitter : public MCCodeEmitter {
-  const MCInstrInfo &MCII;
-  const MCContext &CTX;
-  bool IsLittleEndian;
-
-public:
-  PPCMCCodeEmitter(const MCInstrInfo &mcii, MCContext &ctx)
-      : MCII(mcii), CTX(ctx),
-        IsLittleEndian(ctx.getAsmInfo()->isLittleEndian()) {}
-  PPCMCCodeEmitter(const PPCMCCodeEmitter &) = delete;
-  void operator=(const PPCMCCodeEmitter &) = delete;
-  ~PPCMCCodeEmitter() override = default;
-
-  unsigned getDirectBrEncoding(const MCInst &MI, unsigned OpNo,
-                               SmallVectorImpl<MCFixup> &Fixups,
-                               const MCSubtargetInfo &STI) const;
-  unsigned getCondBrEncoding(const MCInst &MI, unsigned OpNo,
-                             SmallVectorImpl<MCFixup> &Fixups,
-                             const MCSubtargetInfo &STI) const;
-  unsigned getAbsDirectBrEncoding(const MCInst &MI, unsigned OpNo,
-                                  SmallVectorImpl<MCFixup> &Fixups,
-                                  const MCSubtargetInfo &STI) const;
-  unsigned getAbsCondBrEncoding(const MCInst &MI, unsigned OpNo,
-                                SmallVectorImpl<MCFixup> &Fixups,
-                                const MCSubtargetInfo &STI) const;
-  unsigned getImm16Encoding(const MCInst &MI, unsigned OpNo,
-                             SmallVectorImpl<MCFixup> &Fixups,
-                             const MCSubtargetInfo &STI) const;
-  unsigned getMemRIEncoding(const MCInst &MI, unsigned OpNo,
-                            SmallVectorImpl<MCFixup> &Fixups,
-                            const MCSubtargetInfo &STI) const;
-  unsigned getMemRIXEncoding(const MCInst &MI, unsigned OpNo,
-                             SmallVectorImpl<MCFixup> &Fixups,
-                             const MCSubtargetInfo &STI) const;
-  unsigned getMemRIX16Encoding(const MCInst &MI, unsigned OpNo,
-                               SmallVectorImpl<MCFixup> &Fixups,
-                               const MCSubtargetInfo &STI) const;
-  unsigned getSPE8DisEncoding(const MCInst &MI, unsigned OpNo,
-                              SmallVectorImpl<MCFixup> &Fixups,
-                              const MCSubtargetInfo &STI) const;
-  unsigned getSPE4DisEncoding(const MCInst &MI, unsigned OpNo,
-                              SmallVectorImpl<MCFixup> &Fixups,
-                              const MCSubtargetInfo &STI) const;
-  unsigned getSPE2DisEncoding(const MCInst &MI, unsigned OpNo,
-                              SmallVectorImpl<MCFixup> &Fixups,
-                              const MCSubtargetInfo &STI) const;
-  unsigned getTLSRegEncoding(const MCInst &MI, unsigned OpNo,
-                             SmallVectorImpl<MCFixup> &Fixups,
-                             const MCSubtargetInfo &STI) const;
-  unsigned getTLSCallEncoding(const MCInst &MI, unsigned OpNo,
-                              SmallVectorImpl<MCFixup> &Fixups,
-                              const MCSubtargetInfo &STI) const;
-  unsigned get_crbitm_encoding(const MCInst &MI, unsigned OpNo,
-                               SmallVectorImpl<MCFixup> &Fixups,
-                               const MCSubtargetInfo &STI) const;
-
-  /// getMachineOpValue - Return binary encoding of operand. If the machine
-  /// operand requires relocation, record the relocation and return zero.
-  unsigned getMachineOpValue(const MCInst &MI,const MCOperand &MO,
-                             SmallVectorImpl<MCFixup> &Fixups,
-                             const MCSubtargetInfo &STI) const;
-
-  // getBinaryCodeForInstr - TableGen'erated function for getting the
-  // binary encoding for an instruction.
-  uint64_t getBinaryCodeForInstr(const MCInst &MI,
-                                 SmallVectorImpl<MCFixup> &Fixups,
-                                 const MCSubtargetInfo &STI) const;
-
-  void encodeInstruction(const MCInst &MI, raw_ostream &OS,
-                         SmallVectorImpl<MCFixup> &Fixups,
-                         const MCSubtargetInfo &STI) const override;
-
-  // Get the number of bytes used to encode the given MCInst.
-  unsigned getInstSizeInBytes(const MCInst &MI) const;
-
-private:
-  uint64_t computeAvailableFeatures(const FeatureBitset &FB) const;
-  void verifyInstructionPredicates(const MCInst &MI,
-                                   uint64_t AvailableFeatures) const;
-};
-
-} // end anonymous namespace
-
 MCCodeEmitter *llvm::createPPCMCCodeEmitter(const MCInstrInfo &MCII,
                                             const MCRegisterInfo &MRI,
                                             MCContext &Ctx) {

diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.h b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.h
new file mode 100644 (file)
index 0000000..a4bcff4
--- /dev/null
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.h
@@ -0,0 +1,109 @@
+//===-- PPCMCCodeEmitter.h - Convert PPC code to machine code -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the PPCMCCodeEmitter class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H
+#define LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H
+
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInst.h"
+
+namespace llvm {
+
+class PPCMCCodeEmitter : public MCCodeEmitter {
+  const MCInstrInfo &MCII;
+  const MCContext &CTX;
+  bool IsLittleEndian;
+
+public:
+  PPCMCCodeEmitter(const MCInstrInfo &mcii, MCContext &ctx)
+      : MCII(mcii), CTX(ctx),
+        IsLittleEndian(ctx.getAsmInfo()->isLittleEndian()) {}
+  PPCMCCodeEmitter(const PPCMCCodeEmitter &) = delete;
+  void operator=(const PPCMCCodeEmitter &) = delete;
+  ~PPCMCCodeEmitter() override = default;
+
+  unsigned getDirectBrEncoding(const MCInst &MI, unsigned OpNo,
+                               SmallVectorImpl<MCFixup> &Fixups,
+                               const MCSubtargetInfo &STI) const;
+  unsigned getCondBrEncoding(const MCInst &MI, unsigned OpNo,
+                             SmallVectorImpl<MCFixup> &Fixups,
+                             const MCSubtargetInfo &STI) const;
+  unsigned getAbsDirectBrEncoding(const MCInst &MI, unsigned OpNo,
+                                  SmallVectorImpl<MCFixup> &Fixups,
+                                  const MCSubtargetInfo &STI) const;
+  unsigned getAbsCondBrEncoding(const MCInst &MI, unsigned OpNo,
+                                SmallVectorImpl<MCFixup> &Fixups,
+                                const MCSubtargetInfo &STI) const;
+  unsigned getImm16Encoding(const MCInst &MI, unsigned OpNo,
+                            SmallVectorImpl<MCFixup> &Fixups,
+                            const MCSubtargetInfo &STI) const;
+  unsigned getMemRIEncoding(const MCInst &MI, unsigned OpNo,
+                            SmallVectorImpl<MCFixup> &Fixups,
+                            const MCSubtargetInfo &STI) const;
+  unsigned getMemRIXEncoding(const MCInst &MI, unsigned OpNo,
+                             SmallVectorImpl<MCFixup> &Fixups,
+                             const MCSubtargetInfo &STI) const;
+  unsigned getMemRIX16Encoding(const MCInst &MI, unsigned OpNo,
+                               SmallVectorImpl<MCFixup> &Fixups,
+                               const MCSubtargetInfo &STI) const;
+  unsigned getSPE8DisEncoding(const MCInst &MI, unsigned OpNo,
+                              SmallVectorImpl<MCFixup> &Fixups,
+                              const MCSubtargetInfo &STI) const;
+  unsigned getSPE4DisEncoding(const MCInst &MI, unsigned OpNo,
+                              SmallVectorImpl<MCFixup> &Fixups,
+                              const MCSubtargetInfo &STI) const;
+  unsigned getSPE2DisEncoding(const MCInst &MI, unsigned OpNo,
+                              SmallVectorImpl<MCFixup> &Fixups,
+                              const MCSubtargetInfo &STI) const;
+  unsigned getTLSRegEncoding(const MCInst &MI, unsigned OpNo,
+                             SmallVectorImpl<MCFixup> &Fixups,
+                             const MCSubtargetInfo &STI) const;
+  unsigned getTLSCallEncoding(const MCInst &MI, unsigned OpNo,
+                              SmallVectorImpl<MCFixup> &Fixups,
+                              const MCSubtargetInfo &STI) const;
+  unsigned get_crbitm_encoding(const MCInst &MI, unsigned OpNo,
+                               SmallVectorImpl<MCFixup> &Fixups,
+                               const MCSubtargetInfo &STI) const;
+
+  /// getMachineOpValue - Return binary encoding of operand. If the machine
+  /// operand requires relocation, record the relocation and return zero.
+  unsigned getMachineOpValue(const MCInst &MI, const MCOperand &MO,
+                             SmallVectorImpl<MCFixup> &Fixups,
+                             const MCSubtargetInfo &STI) const;
+
+  // getBinaryCodeForInstr - TableGen'erated function for getting the
+  // binary encoding for an instruction.
+  uint64_t getBinaryCodeForInstr(const MCInst &MI,
+                                 SmallVectorImpl<MCFixup> &Fixups,
+                                 const MCSubtargetInfo &STI) const;
+
+  void encodeInstruction(const MCInst &MI, raw_ostream &OS,
+                         SmallVectorImpl<MCFixup> &Fixups,
+                         const MCSubtargetInfo &STI) const override;
+
+  // Get the number of bytes used to encode the given MCInst.
+  unsigned getInstSizeInBytes(const MCInst &MI) const;
+
+private:
+  uint64_t computeAvailableFeatures(const FeatureBitset &FB) const;
+  void verifyInstructionPredicates(const MCInst &MI,
+                                   uint64_t AvailableFeatures) const;
+};
+
+} // namespace llvm
+
+#endif // LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H