1 files changed, 67 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/NVPTX/NVPTXMCExpr.cpp b/contrib/llvm/lib/Target/NVPTX/NVPTXMCExpr.cpp
new file mode 100644
index 000000000000..86a28f7d0700
--- /dev/null
+++ b/contrib/llvm/lib/Target/NVPTX/NVPTXMCExpr.cpp
@@ -0,0 +1,67 @@
+//===-- NVPTXMCExpr.cpp - NVPTX specific MC expression classes ------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "NVPTXMCExpr.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/MC/MCAssembler.h"
+#include "llvm/MC/MCContext.h"
+using namespace llvm;
+
+#define DEBUG_TYPE "nvptx-mcexpr"
+
+const NVPTXFloatMCExpr *
+NVPTXFloatMCExpr::create(VariantKind Kind, const APFloat &Flt, MCContext &Ctx) {
+  return new (Ctx) NVPTXFloatMCExpr(Kind, Flt);
+}
+
+void NVPTXFloatMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
+  bool Ignored;
+  unsigned NumHex;
+  APFloat APF = getAPFloat();
+
+  switch (Kind) {
+  default: llvm_unreachable("Invalid kind!");
+  case VK_NVPTX_HALF_PREC_FLOAT:
+    // ptxas does not have a way to specify half-precision floats.
+    // Instead we have to print and load fp16 constants as .b16
+    OS << "0x";
+    NumHex = 4;
+    APF.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven, &Ignored);
+    break;
+  case VK_NVPTX_SINGLE_PREC_FLOAT:
+    OS << "0f";
+    NumHex = 8;
+    APF.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven, &Ignored);
+    break;
+  case VK_NVPTX_DOUBLE_PREC_FLOAT:
+    OS << "0d";
+    NumHex = 16;
+    APF.convert(APFloat::IEEEdouble(), APFloat::rmNearestTiesToEven, &Ignored);
+    break;
+  }
+
+  APInt API = APF.bitcastToAPInt();
+  std::string HexStr(utohexstr(API.getZExtValue()));
+  if (HexStr.length() < NumHex)
+    OS << std::string(NumHex - HexStr.length(), '0');
+  OS << utohexstr(API.getZExtValue());
+}
+
+const NVPTXGenericMCSymbolRefExpr*
+NVPTXGenericMCSymbolRefExpr::create(const MCSymbolRefExpr *SymExpr,
+                                    MCContext &Ctx) {
+  return new (Ctx) NVPTXGenericMCSymbolRefExpr(SymExpr);
+}
+
+void NVPTXGenericMCSymbolRefExpr::printImpl(raw_ostream &OS,
+                                            const MCAsmInfo *MAI) const {
+  OS << "generic(";
+  SymExpr->print(OS, MAI);
+  OS << ")";
+}