Allow CP10/CP11 operations on ARMv5/v6

[oota-llvm.git] / lib / Target / ARM / Thumb1FrameLowering.cpp

diff --git a/lib/Target/ARM/Thumb1FrameLowering.cpp b/lib/Target/ARM/Thumb1FrameLowering.cpp
index 009104e6149cc6f6e7e575894260eaec7ee7f2a6..70dab9af8d02cc87984799c9dca42a7689d44226 100644 (file)
--- a/lib/Target/ARM/Thumb1FrameLowering.cpp
+++ b/lib/Target/ARM/Thumb1FrameLowering.cpp
@@ -21,6 +21,9 @@
 
 using namespace llvm;
 
+Thumb1FrameLowering::Thumb1FrameLowering(const ARMSubtarget &sti)
+    : ARMFrameLowering(sti) {}
+
 bool Thumb1FrameLowering::hasReservedCallFrame(const MachineFunction &MF) const{
   const MachineFrameInfo *FFI = MF.getFrameInfo();
   unsigned CFSize = FFI->getMaxCallFrameSize();
@@ -49,9 +52,10 @@ void Thumb1FrameLowering::
 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
                               MachineBasicBlock::iterator I) const {
   const Thumb1InstrInfo &TII =
-    *static_cast<const Thumb1InstrInfo*>(MF.getTarget().getInstrInfo());
-  const Thumb1RegisterInfo *RegInfo =
-    static_cast<const Thumb1RegisterInfo*>(MF.getTarget().getRegisterInfo());
+      *static_cast<const Thumb1InstrInfo *>(
+          MF.getTarget().getSubtargetImpl()->getInstrInfo());
+  const Thumb1RegisterInfo *RegInfo = static_cast<const Thumb1RegisterInfo *>(
+      MF.getTarget().getSubtargetImpl()->getRegisterInfo());
   if (!hasReservedCallFrame(MF)) {
     // If we have alloca, convert as follows:
     // ADJCALLSTACKDOWN -> sub, sp, sp, amount
@@ -86,12 +90,16 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const {
   ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
   MachineModuleInfo &MMI = MF.getMMI();
   const MCRegisterInfo *MRI = MMI.getContext().getRegisterInfo();
-  const Thumb1RegisterInfo *RegInfo =
-    static_cast<const Thumb1RegisterInfo*>(MF.getTarget().getRegisterInfo());
+  const Thumb1RegisterInfo *RegInfo = static_cast<const Thumb1RegisterInfo *>(
+      MF.getTarget().getSubtargetImpl()->getRegisterInfo());
   const Thumb1InstrInfo &TII =
-    *static_cast<const Thumb1InstrInfo*>(MF.getTarget().getInstrInfo());
+      *static_cast<const Thumb1InstrInfo *>(
+          MF.getTarget().getSubtargetImpl()->getInstrInfo());
 
-  unsigned Align = MF.getTarget().getFrameLowering()->getStackAlignment();
+  unsigned Align = MF.getTarget()
+                       .getSubtargetImpl()
+                       ->getFrameLowering()
+                       ->getStackAlignment();
   unsigned ArgRegsSaveSize = AFI->getArgRegsSaveSize(Align);
   unsigned NumBytes = MFI->getStackSize();
   assert(NumBytes >= ArgRegsSaveSize &&
@@ -114,24 +122,22 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const {
   if (ArgRegsSaveSize) {
     emitSPUpdate(MBB, MBBI, TII, dl, *RegInfo, -ArgRegsSaveSize,
                  MachineInstr::FrameSetup);
-    MCSymbol *SPLabel = MMI.getContext().CreateTempSymbol();
-    BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::PROLOG_LABEL))
-        .addSym(SPLabel);
     CFAOffset -= ArgRegsSaveSize;
-    MMI.addFrameInst(
-        MCCFIInstruction::createDefCfaOffset(SPLabel, CFAOffset));
+    unsigned CFIIndex = MMI.addFrameInst(
+        MCCFIInstruction::createDefCfaOffset(nullptr, CFAOffset));
+    BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+        .addCFIIndex(CFIIndex);
   }
 
   if (!AFI->hasStackFrame()) {
     if (NumBytes - ArgRegsSaveSize != 0) {
       emitSPUpdate(MBB, MBBI, TII, dl, *RegInfo, -(NumBytes - ArgRegsSaveSize),
                    MachineInstr::FrameSetup);
-      MCSymbol *SPLabel = MMI.getContext().CreateTempSymbol();
-      BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::PROLOG_LABEL))
-          .addSym(SPLabel);
       CFAOffset -= NumBytes - ArgRegsSaveSize;
-      MMI.addFrameInst(
-          MCCFIInstruction::createDefCfaOffset(SPLabel, CFAOffset));
+      unsigned CFIIndex = MMI.addFrameInst(
+          MCCFIInstruction::createDefCfaOffset(nullptr, CFAOffset));
+      BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+          .addCFIIndex(CFIIndex);
     }
     return;
   }
@@ -190,12 +196,12 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const {
     NumBytes = 0;
   }
 
-  MCSymbol *SPLabel = MMI.getContext().CreateTempSymbol();
-  BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::PROLOG_LABEL)).addSym(SPLabel);
   if (adjustedGPRCS1Size) {
     CFAOffset -= adjustedGPRCS1Size;
-    MMI.addFrameInst(
-        MCCFIInstruction::createDefCfaOffset(SPLabel, CFAOffset));
+    unsigned CFIIndex = MMI.addFrameInst(
+        MCCFIInstruction::createDefCfaOffset(nullptr, CFAOffset));
+    BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+        .addCFIIndex(CFIIndex);
   }
   for (std::vector<CalleeSavedInfo>::const_iterator I = CSI.begin(),
          E = CSI.end(); I != E; ++I) {
@@ -219,9 +225,10 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const {
     case ARM::R6:
     case ARM::R7:
     case ARM::LR:
-      MMI.addFrameInst(MCCFIInstruction::createOffset(SPLabel,
-         MRI->getDwarfRegNum(Reg, true),
-         MFI->getObjectOffset(FI)));
+      unsigned CFIIndex = MMI.addFrameInst(MCCFIInstruction::createOffset(
+          nullptr, MRI->getDwarfRegNum(Reg, true), MFI->getObjectOffset(FI)));
+      BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+          .addCFIIndex(CFIIndex);
       break;
     }
   }
@@ -234,18 +241,19 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const {
     AddDefaultPred(BuildMI(MBB, MBBI, dl, TII.get(ARM::tADDrSPi), FramePtr)
       .addReg(ARM::SP).addImm(FramePtrOffsetInBlock / 4)
       .setMIFlags(MachineInstr::FrameSetup));
-    MCSymbol *SPLabel = MMI.getContext().CreateTempSymbol();
-    BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::PROLOG_LABEL))
-        .addSym(SPLabel);
     if(FramePtrOffsetInBlock) {
       CFAOffset += FramePtrOffsetInBlock;
-      MMI.addFrameInst(
-          MCCFIInstruction::createDefCfa(SPLabel,
-              MRI->getDwarfRegNum(FramePtr, true), CFAOffset));
-    } else
-      MMI.addFrameInst(
-          MCCFIInstruction::createDefCfaRegister(SPLabel,
-              MRI->getDwarfRegNum(FramePtr, true)));
+      unsigned CFIIndex = MMI.addFrameInst(MCCFIInstruction::createDefCfa(
+          nullptr, MRI->getDwarfRegNum(FramePtr, true), CFAOffset));
+      BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+          .addCFIIndex(CFIIndex);
+    } else {
+      unsigned CFIIndex =
+          MMI.addFrameInst(MCCFIInstruction::createDefCfaRegister(
+              nullptr, MRI->getDwarfRegNum(FramePtr, true)));
+      BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+          .addCFIIndex(CFIIndex);
+    }
     if (NumBytes > 508)
       // If offset is > 508 then sp cannot be adjusted in a single instruction,
       // try restoring from fp instead.
@@ -257,12 +265,11 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const {
     emitSPUpdate(MBB, MBBI, TII, dl, *RegInfo, -NumBytes,
                  MachineInstr::FrameSetup);
     if (!HasFP) {
-      MCSymbol *SPLabel = MMI.getContext().CreateTempSymbol();
-      BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::PROLOG_LABEL))
-          .addSym(SPLabel);
       CFAOffset -= NumBytes;
-      MMI.addFrameInst(
-          MCCFIInstruction::createDefCfaOffset(SPLabel, CFAOffset));
+      unsigned CFIIndex = MMI.addFrameInst(
+          MCCFIInstruction::createDefCfaOffset(nullptr, CFAOffset));
+      BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+          .addCFIIndex(CFIIndex);
     }
   }
 
@@ -294,7 +301,7 @@ void Thumb1FrameLowering::emitPrologue(MachineFunction &MF) const {
     AFI->setShouldRestoreSPFromFP(true);
 }
 
-static bool isCSRestore(MachineInstr *MI, const uint16_t *CSRegs) {
+static bool isCSRestore(MachineInstr *MI, const MCPhysReg *CSRegs) {
   if (MI->getOpcode() == ARM::tLDRspi &&
       MI->getOperand(1).isFI() &&
       isCalleeSavedRegister(MI->getOperand(0).getReg(), CSRegs))
@@ -319,17 +326,21 @@ void Thumb1FrameLowering::emitEpilogue(MachineFunction &MF,
   DebugLoc dl = MBBI->getDebugLoc();
   MachineFrameInfo *MFI = MF.getFrameInfo();
   ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
-  const Thumb1RegisterInfo *RegInfo =
-    static_cast<const Thumb1RegisterInfo*>(MF.getTarget().getRegisterInfo());
+  const Thumb1RegisterInfo *RegInfo = static_cast<const Thumb1RegisterInfo *>(
+      MF.getTarget().getSubtargetImpl()->getRegisterInfo());
   const Thumb1InstrInfo &TII =
-    *static_cast<const Thumb1InstrInfo*>(MF.getTarget().getInstrInfo());
+      *static_cast<const Thumb1InstrInfo *>(
+          MF.getTarget().getSubtargetImpl()->getInstrInfo());
 
-  unsigned Align = MF.getTarget().getFrameLowering()->getStackAlignment();
+  unsigned Align = MF.getTarget()
+                       .getSubtargetImpl()
+                       ->getFrameLowering()
+                       ->getStackAlignment();
   unsigned ArgRegsSaveSize = AFI->getArgRegsSaveSize(Align);
   int NumBytes = (int)MFI->getStackSize();
-  assert(NumBytes >= ArgRegsSaveSize &&
+  assert((unsigned)NumBytes >= ArgRegsSaveSize &&
          "ArgRegsSaveSize is included in NumBytes");
-  const uint16_t *CSRegs = RegInfo->getCalleeSavedRegs();
+  const MCPhysReg *CSRegs = RegInfo->getCalleeSavedRegs();
   unsigned FramePtr = RegInfo->getFrameRegister(MF);
 
   if (!AFI->hasStackFrame()) {
@@ -415,7 +426,8 @@ spillCalleeSavedRegisters(MachineBasicBlock &MBB,
 
   DebugLoc DL;
   MachineFunction &MF = *MBB.getParent();
-  const TargetInstrInfo &TII = *MF.getTarget().getInstrInfo();
+  const TargetInstrInfo &TII =
+      *MF.getTarget().getSubtargetImpl()->getInstrInfo();
 
   if (MI != MBB.end()) DL = MI->getDebugLoc();
 
@@ -454,7 +466,8 @@ restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
 
   MachineFunction &MF = *MBB.getParent();
   ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
-  const TargetInstrInfo &TII = *MF.getTarget().getInstrInfo();
+  const TargetInstrInfo &TII =
+      *MF.getTarget().getSubtargetImpl()->getInstrInfo();
 
   bool isVarArg = AFI->getArgRegsSaveSize() > 0;
   DebugLoc DL = MI->getDebugLoc();