Add a few Subzero intrinsics (not the atomic ones yet).

src/IceInstX8632.h

 //===- subzero/src/IceInstX8632.h - Low-level x86 instructions --*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares the InstX8632 and OperandX8632 classes and
 // their subclasses.  This represents the machine instructions and
 // operands used for x86-32 code selection.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef SUBZERO_SRC_ICEINSTX8632_H
 #define SUBZERO_SRC_ICEINSTX8632_H
 
 #include "IceDefs.h"
 #include "IceInst.h"
 #include "IceInstX8632.def"
 #include "IceOperand.h"
 
 namespace Ice {
 
 class TargetX8632;
 
 // OperandX8632 extends the Operand hierarchy.  Its subclasses are
-// OperandX8632Mem and VariableSplit.
+// OperandX8632Mem, and VariableSplit.

[Jim Stichnoth, 2014/06/12 20:52:07]

Remove the comma. :)

[jvoung (off chromium), 2014/06/16 20:51:59]

Done.

 class OperandX8632 : public Operand {
 public:
   enum OperandKindX8632 {
     k__Start = Operand::kTarget,
     kMem,
     kSplit
   };
   virtual void emit(const Cfg *Func) const = 0;
   void dump(const Cfg *Func) const;
 
 protected:
   OperandX8632(OperandKindX8632 Kind, Type Ty)
       : Operand(static_cast<OperandKind>(Kind), Ty) {}
   virtual ~OperandX8632() {}
 
 private:
   OperandX8632(const OperandX8632 &) LLVM_DELETED_FUNCTION;
   OperandX8632 &operator=(const OperandX8632 &) LLVM_DELETED_FUNCTION;
 };
 
 // OperandX8632Mem represents the m32 addressing mode, with optional
 // base and index registers, a constant offset, and a fixed shift
 // value for the index register.
 class OperandX8632Mem : public OperandX8632 {
 public:
-  static OperandX8632Mem *create(Cfg *Func, Type Ty, Variable *Base,
-                                 Constant *Offset, Variable *Index = NULL,
-                                 uint32_t Shift = 0) {
+  enum SegmentRegisters {
+    DefaultSegment = -1,
+#define X(val, name)                                                           \
+    val,
+      SEG_REGX8632_TABLE
+#undef X
+    SegReg_NUM
+  };
+  static OperandX8632Mem *create(
+      Cfg *Func, Type Ty, Variable *Base,
+      Constant *Offset, Variable *Index = NULL,
+      uint16_t Shift = 0, SegmentRegisters SegmentReg = DefaultSegment) {
     return new (Func->allocate<OperandX8632Mem>())
-        OperandX8632Mem(Func, Ty, Base, Offset, Index, Shift);
+        OperandX8632Mem(Func, Ty, Base, Offset, Index, Shift, SegmentReg);
   }
   Variable *getBase() const { return Base; }
   Constant *getOffset() const { return Offset; }
   Variable *getIndex() const { return Index; }
-  uint32_t getShift() const { return Shift; }
+  uint16_t getShift() const { return Shift; }
+  SegmentRegisters getSegmentRegister() const { return SegmentReg; }
   virtual void emit(const Cfg *Func) const;
   virtual void dump(const Cfg *Func) const;
 
   static bool classof(const Operand *Operand) {
     return Operand->getKind() == static_cast<OperandKind>(kMem);
   }
 
 private:
   OperandX8632Mem(Cfg *Func, Type Ty, Variable *Base, Constant *Offset,
-                  Variable *Index, uint32_t Shift);
+                  Variable *Index, uint16_t Shift,
+                  SegmentRegisters SegmentReg);
   OperandX8632Mem(const OperandX8632Mem &) LLVM_DELETED_FUNCTION;
   OperandX8632Mem &operator=(const OperandX8632Mem &) LLVM_DELETED_FUNCTION;
   virtual ~OperandX8632Mem() {}
   Variable *Base;
   Constant *Offset;
   Variable *Index;
-  uint32_t Shift;
+  uint16_t Shift;
+  SegmentRegisters SegmentReg : 16;
 };
 
 // VariableSplit is a way to treat an f64 memory location as a pair
 // of i32 locations (Low and High).  This is needed for some cases
 // of the Bitcast instruction.  Since it's not possible for integer
 // registers to access the XMM registers and vice versa, the
 // lowering forces the f64 to be spilled to the stack and then
 // accesses through the VariableSplit.
 class VariableSplit : public OperandX8632 {
 public:
@@ skipping 61 matching lines @@
     Sbb,
     Shl,
     Shld,
     Shr,
     Shrd,
     Store,
     Sub,
     Subss,
     Test,
     Ucomiss,
+    UD2,
     Xor
   };
   static const char *getWidthString(Type Ty);
   virtual void emit(const Cfg *Func) const = 0;
   virtual void dump(const Cfg *Func) const;
 
 protected:
   InstX8632(Cfg *Func, InstKindX8632 Kind, SizeT Maxsrcs, Variable *Dest)
       : InstTarget(Func, static_cast<InstKind>(Kind), Maxsrcs, Dest) {}
   virtual ~InstX8632() {}
@@ skipping 351 matching lines @@
   virtual void dump(const Cfg *Func) const;
   static bool classof(const Inst *Inst) { return isClassof(Inst, Ucomiss); }
 
 private:
   InstX8632Ucomiss(Cfg *Func, Operand *Src1, Operand *Src2);
   InstX8632Ucomiss(const InstX8632Ucomiss &) LLVM_DELETED_FUNCTION;
   InstX8632Ucomiss &operator=(const InstX8632Ucomiss &) LLVM_DELETED_FUNCTION;
   virtual ~InstX8632Ucomiss() {}
 };
 
+// UD2 instruction.
+class InstX8632UD2 : public InstX8632 {
+public:
+  static InstX8632UD2 *create(Cfg *Func) {
+    return new (Func->allocate<InstX8632UD2>())
+        InstX8632UD2(Func);
+  }
+  virtual void emit(const Cfg *Func) const;
+  virtual void dump(const Cfg *Func) const;
+  static bool classof(const Inst *Inst) { return isClassof(Inst, UD2); }
+
+private:
+  InstX8632UD2(Cfg *Func);
+  InstX8632UD2(const InstX8632UD2 &) LLVM_DELETED_FUNCTION;
+  InstX8632UD2 &operator=(const InstX8632UD2 &) LLVM_DELETED_FUNCTION;
+  virtual ~InstX8632UD2() {}
+};
+
 // Test instruction.
 class InstX8632Test : public InstX8632 {
 public:
   static InstX8632Test *create(Cfg *Func, Operand *Source1, Operand *Source2) {
     return new (Func->allocate<InstX8632Test>())
         InstX8632Test(Func, Source1, Source2);
   }
   virtual void emit(const Cfg *Func) const;
   virtual void dump(const Cfg *Func) const;
   static bool classof(const Inst *Inst) { return isClassof(Inst, Test); }
@@ skipping 167 matching lines @@
 private:
   InstX8632Ret(Cfg *Func, Variable *Source);
   InstX8632Ret(const InstX8632Ret &) LLVM_DELETED_FUNCTION;
   InstX8632Ret &operator=(const InstX8632Ret &) LLVM_DELETED_FUNCTION;
   virtual ~InstX8632Ret() {}
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEINSTX8632_H