Remove unnecessary caching of the subtarget for HexagonFrameLowering and remove the unused constructor argument.

llvm-svn: 211819

llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp

@@ -165,8 +165,8 @@ void HexagonFrameLowering::emitEpilogue(MachineFunction &MF,
     }
     // Replace 'jumpr r31' instruction with dealloc_return for V4 and higher
     // versions.
-    if (STI.hasV4TOps() && MBBI->getOpcode() == Hexagon::JMPret
-                        && !DisableDeallocRet) {
+    if (MF.getTarget().getSubtarget<HexagonSubtarget>().hasV4TOps() &&
+        MBBI->getOpcode() == Hexagon::JMPret && !DisableDeallocRet) {
       // Check for RESTORE_DEALLOC_RET_JMP_V4 call. Don't emit an extra DEALLOC
       // instruction if we encounter it.
       MachineBasicBlock::iterator BeforeJMPR =

llvm/lib/Target/Hexagon/HexagonFrameLowering.h

@@ -11,20 +11,16 @@
 #define HEXAGON_FRAMEINFO_H
 
 #include "Hexagon.h"
-#include "HexagonSubtarget.h"
 #include "llvm/Target/TargetFrameLowering.h"
 
 namespace llvm {
 
 class HexagonFrameLowering : public TargetFrameLowering {
 private:
-  const HexagonSubtarget &STI;
   void determineFrameLayout(MachineFunction &MF) const;
 
 public:
-  explicit HexagonFrameLowering(const HexagonSubtarget &sti)
-    : TargetFrameLowering(StackGrowsDown, 8, 0), STI(sti) {
-  }
+  explicit HexagonFrameLowering() : TargetFrameLowering(StackGrowsDown, 8, 0) {}
 
   /// emitProlog/emitEpilog - These methods insert prolog and epilog code into
   /// the function.

llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp

@@ -72,7 +72,7 @@ HexagonTargetMachine::HexagonTargetMachine(const Target &T, StringRef TT,
     : LLVMTargetMachine(T, TT, CPU, FS, Options, RM, CM, OL),
       DL("e-m:e-p:32:32-i1:32-i64:64-a:0-n32"), Subtarget(TT, CPU, FS),
       InstrInfo(Subtarget), TLInfo(*this), TSInfo(*this),
-      FrameLowering(Subtarget) {
+      FrameLowering() {
     initAsmInfo();
 }