[mips][microMIPS] Implement PRECEQ.W.PHL, PRECEQ.W.PHR, PRECEQU.PH.QBL, PRECEQU.PH...

[oota-llvm.git] / lib / Target / Mips / MipsSERegisterInfo.cpp

diff --git a/lib/Target/Mips/MipsSERegisterInfo.cpp b/lib/Target/Mips/MipsSERegisterInfo.cpp
index 8c74a98ecca6312163eb4c7fd66a783fa8072b08..b1e2885f5ba31acaa3a13389bbea1a1ca277fb4f 100644 (file)
--- a/lib/Target/Mips/MipsSERegisterInfo.cpp
+++ b/lib/Target/Mips/MipsSERegisterInfo.cpp
@@ -110,8 +110,11 @@ void MipsSERegisterInfo::eliminateFI(MachineBasicBlock::iterator II,
   MachineFunction &MF = *MI.getParent()->getParent();
   MachineFrameInfo *MFI = MF.getFrameInfo();
   MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
+
   MipsABIInfo ABI =
       static_cast<const MipsTargetMachine &>(MF.getTarget()).getABI();
+  const MipsRegisterInfo *RegInfo =
+    static_cast<const MipsRegisterInfo *>(MF.getSubtarget().getRegisterInfo());
 
   const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
   int MinCSFI = 0;
@@ -123,19 +126,28 @@ void MipsSERegisterInfo::eliminateFI(MachineBasicBlock::iterator II,
   }
 
   bool EhDataRegFI = MipsFI->isEhDataRegFI(FrameIndex);
-
+  bool IsISRRegFI = MipsFI->isISRRegFI(FrameIndex);
   // The following stack frame objects are always referenced relative to $sp:
   //  1. Outgoing arguments.
   //  2. Pointer to dynamically allocated stack space.
   //  3. Locations for callee-saved registers.
   //  4. Locations for eh data registers.
+  //  5. Locations for ISR saved Coprocessor 0 registers 12 & 14.
   // Everything else is referenced relative to whatever register
   // getFrameRegister() returns.
   unsigned FrameReg;
 
-  if ((FrameIndex >= MinCSFI && FrameIndex <= MaxCSFI) || EhDataRegFI)
+  if ((FrameIndex >= MinCSFI && FrameIndex <= MaxCSFI) || EhDataRegFI ||
+      IsISRRegFI)
     FrameReg = ABI.GetStackPtr();
-  else
+  else if (RegInfo->needsStackRealignment(MF)) {
+    if (MFI->hasVarSizedObjects() && !MFI->isFixedObjectIndex(FrameIndex))
+      FrameReg = ABI.GetBasePtr();
+    else if (MFI->isFixedObjectIndex(FrameIndex))
+      FrameReg = getFrameRegister(MF);
+    else
+      FrameReg = ABI.GetStackPtr();
+  } else
     FrameReg = getFrameRegister(MF);
 
   // Calculate final offset.