Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 86 insertions, 0 deletions

diff --git a/clang-r353983/include/llvm/MC/MCValue.h b/clang-r353983/include/llvm/MC/MCValue.h
new file mode 100644
index 00000000..0be7ce70
--- /dev/null
+++ b/clang-r353983/include/llvm/MC/MCValue.h
@@ -0,0 +1,86 @@
+//===-- llvm/MC/MCValue.h - MCValue class -----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the declaration of the MCValue class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_MC_MCVALUE_H
+#define LLVM_MC_MCVALUE_H
+
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Support/DataTypes.h"
+#include <cassert>
+
+namespace llvm {
+class MCAsmInfo;
+class raw_ostream;
+
+/// This represents an "assembler immediate".
+///
+///  In its most general form, this can hold ":Kind:(SymbolA - SymbolB +
+///  imm64)".  Not all targets supports relocations of this general form, but we
+///  need to represent this anyway.
+///
+/// In general both SymbolA and SymbolB will also have a modifier
+/// analogous to the top-level Kind. Current targets are not expected
+/// to make use of both though. The choice comes down to whether
+/// relocation modifiers apply to the closest symbol or the whole
+/// expression.
+///
+/// Note that this class must remain a simple POD value class, because we need
+/// it to live in unions etc.
+class MCValue {
+  const MCSymbolRefExpr *SymA = nullptr, *SymB = nullptr;
+  int64_t Cst = 0;
+  uint32_t RefKind = 0;
+
+public:
+  MCValue() = default;
+  int64_t getConstant() const { return Cst; }
+  const MCSymbolRefExpr *getSymA() const { return SymA; }
+  const MCSymbolRefExpr *getSymB() const { return SymB; }
+  uint32_t getRefKind() const { return RefKind; }
+
+  /// Is this an absolute (as opposed to relocatable) value.
+  bool isAbsolute() const { return !SymA && !SymB; }
+
+  /// Print the value to the stream \p OS.
+  void print(raw_ostream &OS) const;
+
+  /// Print the value to stderr.
+  void dump() const;
+
+  MCSymbolRefExpr::VariantKind getAccessVariant() const;
+
+  static MCValue get(const MCSymbolRefExpr *SymA,
+                     const MCSymbolRefExpr *SymB = nullptr,
+                     int64_t Val = 0, uint32_t RefKind = 0) {
+    MCValue R;
+    R.Cst = Val;
+    R.SymA = SymA;
+    R.SymB = SymB;
+    R.RefKind = RefKind;
+    return R;
+  }
+
+  static MCValue get(int64_t Val) {
+    MCValue R;
+    R.Cst = Val;
+    R.SymA = nullptr;
+    R.SymB = nullptr;
+    R.RefKind = 0;
+    return R;
+  }
+
+};
+
+} // end namespace llvm
+
+#endif