Move PPCTargetLowering off of the TargetMachine and onto the subtarget.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210852 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCISelLowering.h

@@ -18,7 +18,6 @@
 #include "PPC.h"
 #include "PPCInstrInfo.h"
 #include "PPCRegisterInfo.h"
-#include "PPCSubtarget.h"
 #include "llvm/CodeGen/CallingConvLower.h"
 #include "llvm/CodeGen/SelectionDAG.h"
 #include "llvm/Target/TargetLowering.h"
@@ -345,6 +344,7 @@ namespace llvm {
     SDValue get_VSPLTI_elt(SDNode *N, unsigned ByteSize, SelectionDAG &DAG);
   }
 
+  class PPCSubtarget;
   class PPCTargetLowering : public TargetLowering {
     const PPCSubtarget &Subtarget;
 

lib/Target/PowerPC/PPCSubtarget.cpp

@@ -75,12 +75,13 @@ PPCSubtarget &PPCSubtarget::initializeSubtargetDependencies(StringRef CPU,
 }
 
 PPCSubtarget::PPCSubtarget(const std::string &TT, const std::string &CPU,
-                           const std::string &FS, bool is64Bit,
-                           CodeGenOpt::Level OptLevel)
+                           const std::string &FS, PPCTargetMachine &TM,
+                           bool is64Bit, CodeGenOpt::Level OptLevel)
     : PPCGenSubtargetInfo(TT, CPU, FS), IsPPC64(is64Bit), TargetTriple(TT),
       OptLevel(OptLevel),
       FrameLowering(initializeSubtargetDependencies(CPU, FS)),
-      DL(getDataLayoutString(*this)), InstrInfo(*this), JITInfo(*this) {}
+      DL(getDataLayoutString(*this)), InstrInfo(*this), JITInfo(*this),
+      TLInfo(TM) {}
 
 /// SetJITMode - This is called to inform the subtarget info that we are
 /// producing code for the JIT.

lib/Target/PowerPC/PPCSubtarget.h

@@ -16,6 +16,7 @@
 
 #include "PPCFrameLowering.h"
 #include "PPCInstrInfo.h"
+#include "PPCISelLowering.h"
 #include "PPCJITInfo.h"
 #include "llvm/ADT/Triple.h"
 #include "llvm/IR/DataLayout.h"
@@ -110,13 +111,14 @@ protected:
   const DataLayout DL;
   PPCInstrInfo InstrInfo;
   PPCJITInfo JITInfo;
+  PPCTargetLowering TLInfo;
 
 public:
   /// This constructor initializes the data members to match that
   /// of the specified triple.
   ///
   PPCSubtarget(const std::string &TT, const std::string &CPU,
-               const std::string &FS, bool is64Bit,
+               const std::string &FS, PPCTargetMachine &TM, bool is64Bit,
                CodeGenOpt::Level OptLevel);
 
   /// ParseSubtargetFeatures - Parses features string setting specified
@@ -144,6 +146,7 @@ public:
   const DataLayout *getDataLayout() const { return &DL; }
   const PPCInstrInfo *getInstrInfo() const { return &InstrInfo; }
   PPCJITInfo *getJITInfo() { return &JITInfo; }
+  const PPCTargetLowering *getTargetLowering() const { return &TLInfo; }
 
   /// initializeSubtargetDependencies - Initializes using a CPU and feature string
   /// so that we can use initializer lists for subtarget initialization.

lib/Target/PowerPC/PPCTargetMachine.cpp

@@ -42,7 +42,7 @@ PPCTargetMachine::PPCTargetMachine(const Target &T, StringRef TT, StringRef CPU,
                                    Reloc::Model RM, CodeModel::Model CM,
                                    CodeGenOpt::Level OL, bool is64Bit)
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
-      Subtarget(TT, CPU, FS, is64Bit, OL), TLInfo(*this), TSInfo(*this) {
+      Subtarget(TT, CPU, FS, *this, is64Bit, OL), TSInfo(*this) {
   initAsmInfo();
 }
 

lib/Target/PowerPC/PPCTargetMachine.h

@@ -29,7 +29,6 @@ namespace llvm {
 ///
 class PPCTargetMachine : public LLVMTargetMachine {
   PPCSubtarget        Subtarget;
-  PPCTargetLowering   TLInfo;
   PPCSelectionDAGInfo TSInfo;
 
 public:
@@ -46,7 +45,7 @@ public:
   }
   PPCJITInfo *getJITInfo() override { return Subtarget.getJITInfo(); }
   const PPCTargetLowering *getTargetLowering() const override {
-   return &TLInfo;
+    return getSubtargetImpl()->getTargetLowering();
   }
   const PPCSelectionDAGInfo* getSelectionDAGInfo() const override {
     return &TSInfo;