[X86][Haswell][SchedModel] Add architecture specific scheduling models.

[oota-llvm.git] / lib / Target / SystemZ / SystemZSubtarget.cpp

diff --git a/lib/Target/SystemZ/SystemZSubtarget.cpp b/lib/Target/SystemZ/SystemZSubtarget.cpp
index 9c3262e7221024b41fd52e4ec50e44a9154f0767..e160bc86f22515482d34dc1bd2a54136db49c885 100644 (file)
--- a/lib/Target/SystemZ/SystemZSubtarget.cpp
+++ b/lib/Target/SystemZ/SystemZSubtarget.cpp
@@ -1,4 +1,4 @@
-//===- SystemZSubtarget.cpp - SystemZ Subtarget Information -------*- C++ -*-=//
+//===-- SystemZSubtarget.cpp - SystemZ subtarget information --------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -6,23 +6,75 @@
 // 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 "MCTargetDesc/SystemZMCTargetDesc.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/Support/Host.h"
 
 using namespace llvm;
 
-SystemZSubtarget::SystemZSubtarget(const TargetMachine &TM, const Module &M,
-                                   const std::string &FS):
-  HasZ10Insts(false) {
-  std::string CPU = "z9";
+#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";
+#if defined(__linux__) && defined(__s390x__)
+  if (CPUName == "generic")
+    CPUName = sys::getHostCPUName();
+#endif
   // Parse features string.
-  ParseSubtargetFeatures(FS, CPU);
+  ParseSubtargetFeatures(CPUName, FS);
+  return *this;
+}
+
+SystemZSubtarget::SystemZSubtarget(const std::string &TT,
+                                   const std::string &CPU,
+                                   const std::string &FS,
+                                   const TargetMachine &TM)
+    : SystemZGenSubtargetInfo(TT, CPU, FS), HasDistinctOps(false),
+      HasLoadStoreOnCond(false), HasHighWord(false), HasFPExtension(false),
+      HasFastSerialization(false), HasInterlockedAccess1(false),
+      TargetTriple(TT),
+      // Make sure that global data has at least 16 bits of alignment by
+      // default, so that we can refer to it using LARL.  We don't have any
+      // special requirements for stack variables though.
+      DL("E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-a:8:16-n32:64"),
+      InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM),
+      TSInfo(DL), 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;
 }