[Hexagon] Creating HexagonMCInstrInfo namespace as landing zone for static functions detached from HexagonMCInst.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229885 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Hexagon/MCTargetDesc/CMakeLists.txt

@@ -5,6 +5,7 @@ add_llvm_library(LLVMHexagonDesc
   HexagonMCAsmInfo.cpp
   HexagonMCCodeEmitter.cpp
   HexagonMCInst.cpp
+  HexagonMCInstrInfo.cpp
   HexagonMCTargetDesc.cpp
   )
 

lib/Target/Hexagon/MCTargetDesc/HexagonMCCodeEmitter.cpp

@@ -11,6 +11,7 @@
 #include "MCTargetDesc/HexagonBaseInfo.h"
 #include "MCTargetDesc/HexagonMCCodeEmitter.h"
 #include "MCTargetDesc/HexagonMCInst.h"
+#include "MCTargetDesc/HexagonMCInstrInfo.h"
 #include "MCTargetDesc/HexagonMCTargetDesc.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/MC/MCCodeEmitter.h"
@@ -51,14 +52,15 @@ void emitLittleEndian(uint64_t Binary, raw_ostream &OS) {
 HexagonMCCodeEmitter::HexagonMCCodeEmitter(MCInstrInfo const &aMII,
                                            MCSubtargetInfo const &aMST,
                                            MCContext &aMCT)
-    : MST(aMST), MCT(aMCT) {}
+    : MST(aMST), MCT(aMCT), MCII (aMII) {}
 
 void HexagonMCCodeEmitter::EncodeInstruction(MCInst const &MI, raw_ostream &OS,
                                              SmallVectorImpl<MCFixup> &Fixups,
                                              MCSubtargetInfo const &STI) const {
   HexagonMCInst const &HMB = static_cast<HexagonMCInst const &>(MI);
   uint64_t Binary = getBinaryCodeForInstr(HMB, Fixups, STI) | getPacketBits(HMB);
-  assert(HMB.getDesc().getSize() == 4 && "All instructions should be 32bit");
+  assert(HexagonMCInstrInfo::getDesc(MCII, HMB).getSize() == 4 &&
+         "All instructions should be 32bit");
   emitLittleEndian(Binary, OS);
   ++MCNumEmitted;
 }

lib/Target/Hexagon/MCTargetDesc/HexagonMCCodeEmitter.h

@@ -28,6 +28,7 @@ namespace llvm {
 class HexagonMCCodeEmitter : public MCCodeEmitter {
   MCSubtargetInfo const &MST;
   MCContext &MCT;
+  MCInstrInfo const &MCII;
 
 public:
   HexagonMCCodeEmitter(MCInstrInfo const &aMII, MCSubtargetInfo const &aMST,

lib/Target/Hexagon/MCTargetDesc/HexagonMCInst.cpp

@@ -13,6 +13,7 @@
 
 #include "MCTargetDesc/HexagonBaseInfo.h"
 #include "MCTargetDesc/HexagonMCInst.h"
+#include "MCTargetDesc/HexagonMCInstrInfo.h"
 #include "MCTargetDesc/HexagonMCTargetDesc.h"
 
 using namespace llvm;
@@ -64,21 +65,17 @@ void HexagonMCInst::resetPacket() {
   setPacketEnd(false);
 }
 
-MCInstrDesc const &HexagonMCInst::getDesc() const {
-  return (MCII->get(getOpcode()));
-}
-
 // Return the Hexagon ISA class for the insn.
 unsigned HexagonMCInst::getType() const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
 
   return ((F >> HexagonII::TypePos) & HexagonII::TypeMask);
 }
 
 // Return whether the insn is an actual insn.
 bool HexagonMCInst::isCanon() const {
-  return (!getDesc().isPseudo() && !isPrefix() &&
-          getType() != HexagonII::TypeENDLOOP);
+  return (!HexagonMCInstrInfo::getDesc(*MCII, *this).isPseudo() &&
+          !isPrefix() && getType() != HexagonII::TypeENDLOOP);
 }
 
 // Return whether the insn is a prefix.
@@ -88,25 +85,25 @@ bool HexagonMCInst::isPrefix() const {
 
 // Return whether the insn is solo, i.e., cannot be in a packet.
 bool HexagonMCInst::isSolo() const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   return ((F >> HexagonII::SoloPos) & HexagonII::SoloMask);
 }
 
 // Return whether the insn is a new-value consumer.
 bool HexagonMCInst::isNewValue() const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   return ((F >> HexagonII::NewValuePos) & HexagonII::NewValueMask);
 }
 
 // Return whether the instruction is a legal new-value producer.
 bool HexagonMCInst::hasNewValue() const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   return ((F >> HexagonII::hasNewValuePos) & HexagonII::hasNewValueMask);
 }
 
 // Return the operand that consumes or produces a new value.
 const MCOperand &HexagonMCInst::getNewValue() const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   const unsigned O =
       (F >> HexagonII::NewValueOpPos) & HexagonII::NewValueOpMask;
   const MCOperand &MCO = getOperand(O);
@@ -132,7 +129,7 @@ bool HexagonMCInst::isConstExtended(void) const {
 
   short ExtOpNum = getCExtOpNum();
   int MinValue = getMinValue();
-  int MaxValue = getMaxValue();
+  int MaxValue = HexagonMCInstrInfo::getMaxValue(*MCII, *this);
   const MCOperand &MO = getOperand(ExtOpNum);
 
   // We could be using an instruction with an extendable immediate and shoehorn
@@ -154,31 +151,31 @@ bool HexagonMCInst::isConstExtended(void) const {
 
 // Return whether the instruction must be always extended.
 bool HexagonMCInst::isExtended(void) const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   return (F >> HexagonII::ExtendedPos) & HexagonII::ExtendedMask;
 }
 
 // Return true if the instruction may be extended based on the operand value.
 bool HexagonMCInst::isExtendable(void) const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   return (F >> HexagonII::ExtendablePos) & HexagonII::ExtendableMask;
 }
 
 // Return number of bits in the constant extended operand.
 unsigned HexagonMCInst::getBitCount(void) const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   return ((F >> HexagonII::ExtentBitsPos) & HexagonII::ExtentBitsMask);
 }
 
 // Return constant extended operand number.
 unsigned short HexagonMCInst::getCExtOpNum(void) const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   return ((F >> HexagonII::ExtendableOpPos) & HexagonII::ExtendableOpMask);
 }
 
 // Return whether the operand can be constant extended.
 bool HexagonMCInst::isOperandExtended(const unsigned short OperandNum) const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   return ((F >> HexagonII::ExtendableOpPos) & HexagonII::ExtendableOpMask) ==
          OperandNum;
 }
@@ -186,7 +183,7 @@ bool HexagonMCInst::isOperandExtended(const unsigned short OperandNum) const {
 // Return the min value that a constant extendable operand can have
 // without being extended.
 int HexagonMCInst::getMinValue(void) const {
-  const uint64_t F = getDesc().TSFlags;
+  const uint64_t F = HexagonMCInstrInfo::getDesc(*MCII, *this).TSFlags;
   unsigned isSigned =
       (F >> HexagonII::ExtentSignedPos) & HexagonII::ExtentSignedMask;
   unsigned bits = (F >> HexagonII::ExtentBitsPos) & HexagonII::ExtentBitsMask;
@@ -196,17 +193,3 @@ int HexagonMCInst::getMinValue(void) const {
   else
     return 0;
 }
-
-// Return the max value that a constant extendable operand can have
-// without being extended.
-int HexagonMCInst::getMaxValue(void) const {
-  const uint64_t F = getDesc().TSFlags;
-  unsigned isSigned =
-      (F >> HexagonII::ExtentSignedPos) & HexagonII::ExtentSignedMask;
-  unsigned bits = (F >> HexagonII::ExtentBitsPos) & HexagonII::ExtentBitsMask;
-
-  if (isSigned) // if value is signed
-    return ~(-1U << (bits - 1));
-  else
-    return ~(-1U << bits);
-}

lib/Target/Hexagon/MCTargetDesc/HexagonMCInst.h

@@ -52,8 +52,6 @@ public:
   // Return the Hexagon ISA class for the insn.
   unsigned getType() const;
 
-  MCInstrDesc const &getDesc() const;
-
   // Return whether the insn is an actual insn.
   bool isCanon() const;
 
@@ -94,10 +92,6 @@ private:
   // Return the min value that a constant extendable operand can have
   // without being extended.
   int getMinValue() const;
-
-  // Return the max value that a constant extendable operand can have
-  // without being extended.
-  int getMaxValue() const;
 };
 }
 

lib/Target/Hexagon/MCTargetDesc/HexagonMCInstrInfo.cpp

@@ -0,0 +1,37 @@
+//===- HexagonMCInstrInfo.cpp - Hexagon sub-class of MCInst ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This class extends MCInstrInfo to allow Hexagon specific MCInstr queries
+//
+//===----------------------------------------------------------------------===//
+
+#include "HexagonMCInstrInfo.h"
+#include "HexagonBaseInfo.h"
+#include "llvm/MC/MCInstrInfo.h"
+
+namespace llvm {
+MCInstrDesc const &HexagonMCInstrInfo::getDesc(MCInstrInfo const &MCII,
+                                               MCInst const &MCI) {
+  return (MCII.get(MCI.getOpcode()));
+}
+// Return the max value that a constant extendable operand can have
+// without being extended.
+int HexagonMCInstrInfo::getMaxValue(MCInstrInfo const &MCII,
+                                    MCInst const &MCI) {
+  const uint64_t F = HexagonMCInstrInfo::getDesc(MCII, MCI).TSFlags;
+  unsigned isSigned =
+      (F >> HexagonII::ExtentSignedPos) & HexagonII::ExtentSignedMask;
+  unsigned bits = (F >> HexagonII::ExtentBitsPos) & HexagonII::ExtentBitsMask;
+
+  if (isSigned) // if value is signed
+    return ~(-1U << (bits - 1));
+  else
+    return ~(-1U << bits);
+}
+}

lib/Target/Hexagon/MCTargetDesc/HexagonMCInstrInfo.h

@@ -0,0 +1,29 @@
+//===- HexagonMCInstrInfo.cpp - Hexagon sub-class of MCInst ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Utility functions for Hexagon specific MCInst queries
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCINSTRINFO_H
+#define LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCINSTRINFO_H
+
+namespace llvm {
+class MCInstrDesc;
+class MCInstrInfo;
+class MCInst;
+namespace HexagonMCInstrInfo {
+MCInstrDesc const &getDesc(MCInstrInfo const &MCII, MCInst const &MCI);
+// Return the max value that a constant extendable operand can have
+// without being extended.
+int getMaxValue(MCInstrInfo const &MCII, MCInst const &MCI);
+}
+}
+
+#endif // LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCINSTRINFO_H