Use makeArrayRef and None to simplify some code in a tablegen register info file...

[oota-llvm.git] / utils / TableGen / RegisterInfoEmitter.cpp

diff --git a/utils/TableGen/RegisterInfoEmitter.cpp b/utils/TableGen/RegisterInfoEmitter.cpp
index 4704232f78cfa165ae6e2cd3037b1ae45e70ae8b..f58a04a93afe40f55f5ead5618bf842fae9dc9a0 100644 (file)
--- a/utils/TableGen/RegisterInfoEmitter.cpp
+++ b/utils/TableGen/RegisterInfoEmitter.cpp
@@ -233,7 +233,7 @@ EmitRegUnitPressure(raw_ostream &OS, const CodeGenRegBank &RegBank,
   OS << "// Get the name of this register unit pressure set.\n"
      << "const char *" << ClassName << "::\n"
      << "getRegPressureSetName(unsigned Idx) const {\n"
-     << "  static const char *PressureNameTable[] = {\n";
+     << "  static const char *const PressureNameTable[] = {\n";
   unsigned MaxRegUnitWeight = 0;
   for (unsigned i = 0; i < NumSets; ++i ) {
     const RegUnitSet &RegUnits = RegBank.getRegSetAt(i);
@@ -752,7 +752,7 @@ RegisterInfoEmitter::emitComposeSubRegIndexLaneMask(raw_ostream &OS,
     Idx += Sequence.size() + 1;
   }
   OS << "  };\n"
-        "  static const MaskRolOp *CompositeSequences[] = {\n";
+        "  static const MaskRolOp *const CompositeSequences[] = {\n";
   for (size_t i = 0, e = SubRegIndices.size(); i != e; ++i) {
     OS << "    ";
     unsigned Idx = SubReg2SequenceIndexMap[i];
@@ -1070,11 +1070,11 @@ RegisterInfoEmitter::runTargetHeader(raw_ostream &OS, CodeGenTarget &Target,
 
   OS << "namespace llvm {\n\n";
 
+  OS << "class " << TargetName << "FrameLowering;\n\n";
+
   OS << "struct " << ClassName << " : public TargetRegisterInfo {\n"
      << "  explicit " << ClassName
-     << "(unsigned RA, unsigned D = 0, unsigned E = 0, unsigned PC = 0);\n"
-     << "  bool needsStackRealignment(const MachineFunction &) const override\n"
-     << "     { return false; }\n";
+     << "(unsigned RA, unsigned D = 0, unsigned E = 0, unsigned PC = 0);\n";
   if (!RegBank.getSubRegIndices().empty()) {
     OS << "  unsigned composeSubRegIndicesImpl"
        << "(unsigned, unsigned) const override;\n"
@@ -1094,6 +1094,11 @@ RegisterInfoEmitter::runTargetHeader(raw_ostream &OS, CodeGenTarget &Target,
      << "const TargetRegisterClass *RC) const override;\n"
      << "  const int *getRegUnitPressureSets("
      << "unsigned RegUnit) const override;\n"
+     << "  ArrayRef<const char *> getRegMaskNames() const override;\n"
+     << "  ArrayRef<const uint32_t *> getRegMasks() const override;\n"
+     << "  /// Devirtualized TargetFrameLowering.\n"
+     << "  static const " << TargetName << "FrameLowering *getFrameLowering(\n"
+     << "      const MachineFunction &MF);\n"
      << "};\n\n";
 
   const auto &RegisterClasses = RegBank.getRegClasses();
@@ -1445,6 +1450,39 @@ RegisterInfoEmitter::runTargetDesc(raw_ostream &OS, CodeGenTarget &Target,
   }
   OS << "\n\n";
 
+  OS << "ArrayRef<const uint32_t *> " << ClassName
+     << "::getRegMasks() const {\n";
+  if (!CSRSets.empty()) {
+    OS << "  static const uint32_t *const Masks[] = {\n";
+    for (Record *CSRSet : CSRSets)
+      OS << "    " << CSRSet->getName() << "_RegMask,\n";
+    OS << "  };\n";
+    OS << "  return makeArrayRef(Masks);\n";
+  } else {
+    OS << "  return None;\n";
+  }
+  OS << "}\n\n";
+
+  OS << "ArrayRef<const char *> " << ClassName
+     << "::getRegMaskNames() const {\n";
+  if (!CSRSets.empty()) {
+  OS << "  static const char *const Names[] = {\n";
+    for (Record *CSRSet : CSRSets)
+      OS << "    " << '"' << CSRSet->getName() << '"' << ",\n";
+    OS << "  };\n";
+    OS << "  return makeArrayRef(Names);\n";
+  } else {
+    OS << "  return None;\n";
+  }
+  OS << "}\n\n";
+
+  OS << "const " << TargetName << "FrameLowering *"
+     << TargetName << "GenRegisterInfo::\n"
+     << "    getFrameLowering(const MachineFunction &MF) {\n"
+     << "  return static_cast<const " << TargetName << "FrameLowering *>(\n"
+     << "      MF.getSubtarget().getFrameLowering());\n"
+     << "}\n\n";
+
   OS << "} // End llvm namespace\n";
   OS << "#endif // GET_REGINFO_TARGET_DESC\n\n";
 }