Add a new subtarget hook for whether or not we'd like to enable

[oota-llvm.git] / include / llvm / Target / TargetSubtargetInfo.h

diff --git a/include/llvm/Target/TargetSubtargetInfo.h b/include/llvm/Target/TargetSubtargetInfo.h
index 1b2e06acc2b0189763179515f5785b6ee29119ab..83f1997bf20558a2a72e069b9cc1478a3dabef63 100644 (file)
--- a/include/llvm/Target/TargetSubtargetInfo.h
+++ b/include/llvm/Target/TargetSubtargetInfo.h
@@ -66,6 +66,16 @@ public:
   /// scheduler. It does not yet disable the postRA scheduler.
   virtual bool enableMachineScheduler() const;
 
+  /// \brief True if the subtarget should run PostMachineScheduler.
+  ///
+  /// This only takes effect if the target has configured the
+  /// PostMachineScheduler pass to run, or if the global cl::opt flag,
+  /// MISchedPostRA, is set.
+  virtual bool enablePostMachineScheduler() const;
+
+  /// \brief True if the subtarget should run the atomic expansion pass.
+  virtual bool enableAtomicExpandLoadLinked() const;
+
   /// \brief Override generic scheduling policy within a region.
   ///
   /// This is a convenient way for targets that don't provide any custom
@@ -76,6 +86,11 @@ public:
                                    MachineInstr *end,
                                    unsigned NumRegionInstrs) const {}
 
+  // \brief Perform target specific adjustments to the latency of a schedule
+  // dependency.
+  virtual void adjustSchedDependency(SUnit *def, SUnit *use,
+                                     SDep& dep) const { }
+
   // enablePostRAScheduler - If the target can benefit from post-regalloc
   // scheduling and the specified optimization level meets the requirement
   // return true to enable post-register-allocation scheduling. In
@@ -84,15 +99,14 @@ public:
   virtual bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
                                      AntiDepBreakMode& Mode,
                                      RegClassVector& CriticalPathRCs) const;
-  // adjustSchedDependency - Perform target specific adjustments to
-  // the latency of a schedule dependency.
-  virtual void adjustSchedDependency(SUnit *def, SUnit *use,
-                                     SDep& dep) const { }
 
   /// \brief Enable use of alias analysis during code generation (during MI
   /// scheduling, DAGCombine, etc.).
   virtual bool useAA() const;
 
+  /// \brief Enable the use of the early if conversion pass.
+  virtual bool enableEarlyIfConversion() const { return false; }
+
   /// \brief Reset the features for the subtarget.
   virtual void resetSubtargetFeatures(const MachineFunction *MF) { }
 };