1 files changed, 72 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp b/contrib/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp
new file mode 100644
index 0000000..0b49fcd
--- /dev/null
+++ b/contrib/llvm/lib/Target/SystemZ/SystemZSubtarget.cpp
@@ -0,0 +1,72 @@
+//===-- SystemZSubtarget.cpp - SystemZ subtarget information --------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "SystemZSubtarget.h"
+#include "MCTargetDesc/SystemZMCTargetDesc.h"
+#include "llvm/IR/GlobalValue.h"
+
+using namespace llvm;
+
+#define DEBUG_TYPE "systemz-subtarget"
+
+#define GET_SUBTARGETINFO_TARGET_DESC
+#define GET_SUBTARGETINFO_CTOR
+#include "SystemZGenSubtargetInfo.inc"
+
+// Pin the vtable to this file.
+void SystemZSubtarget::anchor() {}
+
+SystemZSubtarget &
+SystemZSubtarget::initializeSubtargetDependencies(StringRef CPU, StringRef FS) {
+  std::string CPUName = CPU;
+  if (CPUName.empty())
+    CPUName = "generic";
+  // Parse features string.
+  ParseSubtargetFeatures(CPUName, FS);
+  return *this;
+}
+
+SystemZSubtarget::SystemZSubtarget(const Triple &TT, const std::string &CPU,
+                                   const std::string &FS,
+                                   const TargetMachine &TM)
+    : SystemZGenSubtargetInfo(TT, CPU, FS), HasDistinctOps(false),
+      HasLoadStoreOnCond(false), HasHighWord(false), HasFPExtension(false),
+      HasPopulationCount(false), HasFastSerialization(false),
+      HasInterlockedAccess1(false), HasMiscellaneousExtensions(false),
+      HasTransactionalExecution(false), HasProcessorAssist(false),
+      HasVector(false), TargetTriple(TT),
+      InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
+      TSInfo(), FrameLowering() {}
+
+// Return true if GV binds locally under reloc model RM.
+static bool bindsLocally(const GlobalValue *GV, Reloc::Model RM) {
+  // For non-PIC, all symbols bind locally.
+  if (RM == Reloc::Static)
+    return true;
+
+  return GV->hasLocalLinkage() || !GV->hasDefaultVisibility();
+}
+
+bool SystemZSubtarget::isPC32DBLSymbol(const GlobalValue *GV,
+                                       Reloc::Model RM,
+                                       CodeModel::Model CM) const {
+  // PC32DBL accesses require the low bit to be clear.  Note that a zero
+  // value selects the default alignment and is therefore OK.
+  if (GV->getAlignment() == 1)
+    return false;
+
+  // For the small model, all locally-binding symbols are in range.
+  if (CM == CodeModel::Small)
+    return bindsLocally(GV, RM);
+
+  // For Medium and above, assume that the symbol is not within the 4GB range.
+  // Taking the address of locally-defined text would be OK, but that
+  // case isn't easy to detect.
+  return false;
+}