Remove variable that keeps the size of area used to save byval or variable

argument registers on the callee's stack frame, along with functions that set
and get it.
    
It is not necessary to add the size of this area when computing stack size in
emitPrologue, since it has already been accounted for in
PEI::calculateFrameObjectOffsets.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144549 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 1 insertions, 12 deletions

diff --git a/lib/Target/Mips/MipsFrameLowering.cpp b/lib/Target/Mips/MipsFrameLowering.cpp
index 07de251193..19bb1a55e6 100644
--- a/lib/Target/Mips/MipsFrameLowering.cpp
+++ b/lib/Target/Mips/MipsFrameLowering.cpp
@@ -163,7 +163,6 @@ void MipsFrameLowering::emitPrologue(MachineFunction &MF) const {
     (MFI->getObjectOffset(MipsFI->getGPFI()) + RegSize) :
     MipsFI->getMaxCallFrameSize();
   unsigned StackSize = AlignOffset(LocalVarAreaOffset, StackAlign) +
-    AlignOffset(MipsFI->getRegSaveAreaSize(), StackAlign) +
     AlignOffset(MFI->getStackSize(), StackAlign);
 
    // Update stack size
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 1ba138f534..9d2cd1d612 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -2459,7 +2459,6 @@ CopyMips64ByValRegs(MachineFunction &MF, SDValue Chain, DebugLoc dl,
   if (IsRegLoc) {
     Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, VA.getLocReg());
     FOOffset = (Reg - Mips64IntRegs) * 8 - 8 * 8;
-    MipsFI->setRegSaveAreaSize(-FOOffset);
   }
   else
     FOOffset = VA.getLocMemOffset();
diff --git a/lib/Target/Mips/MipsMachineFunction.h b/lib/Target/Mips/MipsMachineFunction.h
index be27606ed8..bc30b6b242 100644
--- a/lib/Target/Mips/MipsMachineFunction.h
+++ b/lib/Target/Mips/MipsMachineFunction.h
@@ -51,16 +51,12 @@ private:
   mutable int DynAllocFI; // Frame index of dynamically allocated stack area.   
   unsigned MaxCallFrameSize;
 
-  // Size of area on callee's stack frame which is used to save va_arg or 
-  // byval arguments passed in registers.
-  unsigned RegSaveAreaSize;
-
 public:
   MipsFunctionInfo(MachineFunction& MF)
   : MF(MF), SRetReturnReg(0), GlobalBaseReg(0),
     VarArgsFrameIndex(0), InArgFIRange(std::make_pair(-1, 0)),
     OutArgFIRange(std::make_pair(-1, 0)), GPFI(0), DynAllocFI(0),
-    MaxCallFrameSize(0), RegSaveAreaSize(0)
+    MaxCallFrameSize(0)
   {}
 
   bool isInArgFI(int FI) const {
@@ -104,11 +100,6 @@ public:
 
   unsigned getMaxCallFrameSize() const { return MaxCallFrameSize; }
   void setMaxCallFrameSize(unsigned S) { MaxCallFrameSize = S; }
-
-  unsigned getRegSaveAreaSize() const { return RegSaveAreaSize; }
-  void setRegSaveAreaSize(unsigned S) {
-    if (RegSaveAreaSize < S) RegSaveAreaSize = S;
-  }
 };
 
 } // end of namespace llvm