From d7eba3150884184cf4b485dd71c666935bef27f8 Mon Sep 17 00:00:00 2001
From: Daniel Sanders <daniel.sanders@imgtec.com>
Date: Fri, 7 Nov 2014 12:21:37 +0000
Subject: [PATCH] [mips] Remove remaining use of MipsCC::intArgRegs() in favour
 of MipsABIInfo::GetByValArgRegs() and MipsABIInfo::GetVarArgRegs()

Summary: Depends on D6112

Reviewers: theraven, vmedic

Reviewed By: vmedic

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6113

llvm-svn: 221521
---
 llvm/lib/Target/Mips/MipsABIInfo.cpp      |  8 ++++++++
 llvm/lib/Target/Mips/MipsABIInfo.h        |  4 ++++
 llvm/lib/Target/Mips/MipsISelLowering.cpp | 18 ++++++------------
 llvm/lib/Target/Mips/MipsISelLowering.h   |  3 ---
 4 files changed, 18 insertions(+), 15 deletions(-)

diff --git a/llvm/lib/Target/Mips/MipsABIInfo.cpp b/llvm/lib/Target/Mips/MipsABIInfo.cpp
index 97e04b1..04a8e32 100644
--- a/llvm/lib/Target/Mips/MipsABIInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsABIInfo.cpp
@@ -27,3 +27,11 @@ const ArrayRef<MCPhysReg> MipsABIInfo::GetByValArgRegs() const {
     return makeArrayRef(Mips64IntRegs);
   llvm_unreachable("Unhandled ABI");
 }
+
+const ArrayRef<MCPhysReg> MipsABIInfo::GetVarArgRegs() const {
+  if (IsO32())
+    return makeArrayRef(O32IntRegs);
+  if (IsN32() || IsN64())
+    return makeArrayRef(Mips64IntRegs);
+  llvm_unreachable("Unhandled ABI");
+}
diff --git a/llvm/lib/Target/Mips/MipsABIInfo.h b/llvm/lib/Target/Mips/MipsABIInfo.h
index 778b04d..a3b3cb9 100644
--- a/llvm/lib/Target/Mips/MipsABIInfo.h
+++ b/llvm/lib/Target/Mips/MipsABIInfo.h
@@ -38,8 +38,12 @@ public:
   bool IsEABI() const { return ThisABI == ABI::EABI; }
   ABI GetEnumValue() const { return ThisABI; }
 
+  /// The registers to use for byval arguments.
   const ArrayRef<MCPhysReg> GetByValArgRegs() const;
 
+  /// The registers to use for the variable argument list.
+  const ArrayRef<MCPhysReg> GetVarArgRegs() const;
+
   /// Ordering of ABI's
   /// MipsGenSubtargetInfo.inc will use this to resolve conflicts when given
   /// multiple ABI options.
diff --git a/llvm/lib/Target/Mips/MipsISelLowering.cpp b/llvm/lib/Target/Mips/MipsISelLowering.cpp
index d82dc98..1035797 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsISelLowering.cpp
@@ -3628,12 +3628,6 @@ unsigned MipsTargetLowering::MipsCC::reservedArgArea() const {
   return (Subtarget.isABI_O32() && (CallConv != CallingConv::Fast)) ? 16 : 0;
 }
 
-const ArrayRef<MCPhysReg> MipsTargetLowering::MipsCC::intArgRegs() const {
-  if (Subtarget.isABI_O32())
-    return makeArrayRef(O32IntRegs);
-  return makeArrayRef(Mips64IntRegs);
-}
-
 void MipsTargetLowering::copyByValRegs(
     SDValue Chain, SDLoc DL, std::vector<SDValue> &OutChains, SelectionDAG &DAG,
     const ISD::ArgFlagsTy &Flags, SmallVectorImpl<SDValue> &InVals,
@@ -3646,11 +3640,11 @@ void MipsTargetLowering::copyByValRegs(
   unsigned RegAreaSize = NumRegs * GPRSizeInBytes;
   unsigned FrameObjSize = std::max(Flags.getByValSize(), RegAreaSize);
   int FrameObjOffset;
+  ArrayRef<MCPhysReg> ByValArgRegs = Subtarget.getABI().GetByValArgRegs();
 
   if (RegAreaSize)
-    FrameObjOffset =
-        (int)CC.reservedArgArea() -
-        (int)((CC.intArgRegs().size() - FirstReg) * GPRSizeInBytes);
+    FrameObjOffset = (int)CC.reservedArgArea() -
+                     (int)((ByValArgRegs.size() - FirstReg) * GPRSizeInBytes);
   else
     FrameObjOffset = VA.getLocMemOffset();
 
@@ -3668,7 +3662,7 @@ void MipsTargetLowering::copyByValRegs(
   const TargetRegisterClass *RC = getRegClassFor(RegTy);
 
   for (unsigned I = 0; I < NumRegs; ++I) {
-    unsigned ArgReg = CC.intArgRegs()[FirstReg + I];
+    unsigned ArgReg = ByValArgRegs[FirstReg + I];
     unsigned VReg = addLiveIn(MF, ArgReg, RC);
     unsigned Offset = I * GPRSizeInBytes;
     SDValue StorePtr = DAG.getNode(ISD::ADD, DL, PtrTy, FIN,
@@ -3696,7 +3690,7 @@ void MipsTargetLowering::passByValArg(
   unsigned NumRegs = LastReg - FirstReg;
 
   if (NumRegs) {
-    const ArrayRef<MCPhysReg> ArgRegs = CC.intArgRegs();
+    const ArrayRef<MCPhysReg> ArgRegs = Subtarget.getABI().GetByValArgRegs();
     bool LeftoverBytes = (NumRegs * RegSizeInBytes > ByValSizeInBytes);
     unsigned I = 0;
 
@@ -3779,7 +3773,7 @@ void MipsTargetLowering::writeVarArgRegs(std::vector<SDValue> &OutChains,
                                          const MipsCC &CC, SDValue Chain,
                                          SDLoc DL, SelectionDAG &DAG,
                                          CCState &State) const {
-  const ArrayRef<MCPhysReg> ArgRegs = CC.intArgRegs();
+  const ArrayRef<MCPhysReg> ArgRegs = Subtarget.getABI().GetVarArgRegs();
   unsigned Idx = State.getFirstUnallocated(ArgRegs.data(), ArgRegs.size());
   unsigned RegSizeInBytes = Subtarget.getGPRSizeInBytes();
   MVT RegTy = MVT::getIntegerVT(RegSizeInBytes * 8);
diff --git a/llvm/lib/Target/Mips/MipsISelLowering.h b/llvm/lib/Target/Mips/MipsISelLowering.h
index 788b771..35d86f5 100644
--- a/llvm/lib/Target/Mips/MipsISelLowering.h
+++ b/llvm/lib/Target/Mips/MipsISelLowering.h
@@ -367,9 +367,6 @@ namespace llvm {
       /// register arguments. This is 16-byte if ABI is O32.
       unsigned reservedArgArea() const;
 
-      /// Return pointer to array of integer argument registers.
-      const ArrayRef<MCPhysReg> intArgRegs() const;
-
     private:
       CallingConv::ID CallConv;
       const MipsSubtarget &Subtarget;
-- 
2.7.4