-//===- SystemZSubtarget.cpp - SystemZ Subtarget Information -------*- C++ -*-=//
+//===-- SystemZSubtarget.cpp - SystemZ subtarget information --------------===//
//
// The LLVM Compiler Infrastructure
//
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
-//
-// This file implements the SystemZ specific subclass of TargetSubtarget.
-//
-//===----------------------------------------------------------------------===//
#include "SystemZSubtarget.h"
-#include "SystemZ.h"
-#include "SystemZGenSubtarget.inc"
-#include "llvm/Target/TargetMachine.h"
+#include "llvm/IR/GlobalValue.h"
+
+#define GET_SUBTARGETINFO_TARGET_DESC
+#define GET_SUBTARGETINFO_CTOR
+#include "SystemZGenSubtargetInfo.inc"
using namespace llvm;
-SystemZSubtarget::SystemZSubtarget(const TargetMachine &TM, const Module &M,
- const std::string &FS):
- HasZ10Insts(false) {
- std::string CPU = "z9";
+SystemZSubtarget::SystemZSubtarget(const std::string &TT,
+ const std::string &CPU,
+ const std::string &FS)
+ : SystemZGenSubtargetInfo(TT, CPU, FS), TargetTriple(TT) {
+ std::string CPUName = CPU;
+ if (CPUName.empty())
+ CPUName = "z10";
// Parse features string.
- ParseSubtargetFeatures(FS, CPU);
+ ParseSubtargetFeatures(CPUName, FS);
+}
+
+// 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;
}