[PowerPC] Make LDtocL and friends invariant loads

[oota-llvm.git] / lib / Target / PowerPC / PPCInstrInfo.h

diff --git a/lib/Target/PowerPC/PPCInstrInfo.h b/lib/Target/PowerPC/PPCInstrInfo.h
index 83f14c6cf214702061fec887fde54d53eb226127..4add6f9781e8f0f66d6cc10780e409c31a9b47fe 100644 (file)
--- a/lib/Target/PowerPC/PPCInstrInfo.h
+++ b/lib/Target/PowerPC/PPCInstrInfo.h
@@ -11,8 +11,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef POWERPC_INSTRUCTIONINFO_H
-#define POWERPC_INSTRUCTIONINFO_H
+#ifndef LLVM_LIB_TARGET_POWERPC_PPCINSTRINFO_H
+#define LLVM_LIB_TARGET_POWERPC_PPCINSTRINFO_H
 
 #include "PPC.h"
 #include "PPCRegisterInfo.h"
@@ -106,6 +106,15 @@ public:
                                               UseNode, UseIdx);
   }
 
+  bool hasLowDefLatency(const InstrItineraryData *ItinData,
+                        const MachineInstr *DefMI,
+                        unsigned DefIdx) const override {
+    // Machine LICM should hoist all instructions in low-register-pressure
+    // situations; none are sufficiently free to justify leaving in a loop
+    // body.
+    return false;
+  }
+
   bool isCoalescableExtInstr(const MachineInstr &MI,
                              unsigned &SrcReg, unsigned &DstReg,
                              unsigned &SubIdx) const override;
@@ -228,6 +237,8 @@ public:
   /// instruction may be.  This returns the maximum number of bytes.
   ///
   unsigned GetInstSizeInBytes(const MachineInstr *MI) const;
+
+  void getNoopForMachoTarget(MCInst &NopInst) const override;
 };
 
 }