[SelectionDAG] Add a SDTCisSameSizeAs type constraint that can be used to ensure...

[oota-llvm.git] / include / llvm / Target / TargetIntrinsicInfo.h

diff --git a/include/llvm/Target/TargetIntrinsicInfo.h b/include/llvm/Target/TargetIntrinsicInfo.h
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..c630f5b12a15d020c7e009480ace26652565e862 100644 (file)
--- a/include/llvm/Target/TargetIntrinsicInfo.h
+++ b/include/llvm/Target/TargetIntrinsicInfo.h
@@ -0,0 +1,65 @@
+//===-- llvm/Target/TargetIntrinsicInfo.h - Instruction Info ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file describes the target intrinsic instructions to the code generator.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TARGET_TARGETINTRINSICINFO_H
+#define LLVM_TARGET_TARGETINTRINSICINFO_H
+
+#include "llvm/Support/Compiler.h"
+#include <string>
+
+namespace llvm {
+
+class Function;
+class Module;
+class Type;
+
+//---------------------------------------------------------------------------
+///
+/// TargetIntrinsicInfo - Interface to description of machine instruction set
+///
+class TargetIntrinsicInfo {
+  TargetIntrinsicInfo(const TargetIntrinsicInfo &) = delete;
+  void operator=(const TargetIntrinsicInfo &) = delete;
+public:
+  TargetIntrinsicInfo();
+  virtual ~TargetIntrinsicInfo();
+
+  /// Return the name of a target intrinsic, e.g. "llvm.bfin.ssync".
+  /// The Tys and numTys parameters are for intrinsics with overloaded types
+  /// (e.g., those using iAny or fAny). For a declaration for an overloaded
+  /// intrinsic, Tys should point to an array of numTys pointers to Type,
+  /// and must provide exactly one type for each overloaded type in the
+  /// intrinsic.
+  virtual std::string getName(unsigned IID, Type **Tys = nullptr,
+                              unsigned numTys = 0) const = 0;
+
+  /// Look up target intrinsic by name. Return intrinsic ID or 0 for unknown
+  /// names.
+  virtual unsigned lookupName(const char *Name, unsigned Len) const =0;
+
+  /// Return the target intrinsic ID of a function, or 0.
+  virtual unsigned getIntrinsicID(Function *F) const;
+
+  /// Returns true if the intrinsic can be overloaded.
+  virtual bool isOverloaded(unsigned IID) const = 0;
+
+  /// Create or insert an LLVM Function declaration for an intrinsic,
+  /// and return it. The Tys and numTys are for intrinsics with overloaded
+  /// types. See above for more information.
+  virtual Function *getDeclaration(Module *M, unsigned ID, Type **Tys = nullptr,
+                                   unsigned numTys = 0) const = 0;
+};
+
+} // End llvm namespace
+
+#endif