[GlobalISel] Get rid of the ifdefs in TargetLowering.

Introduce a new API used only by GlobalISel: CallLowering.
This API will contain target hooks dedicated to call lowering.

llvm-svn: 260922

1 files changed, 0 insertions, 78 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index daff2d865a5..a18b7a61cc1 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -21,9 +21,6 @@
 #include "MCTargetDesc/AArch64AddressingModes.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/CodeGen/CallingConvLower.h"
-#ifdef LLVM_BUILD_GLOBAL_ISEL
-#  include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
-#endif
 #include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
@@ -3395,81 +3392,6 @@ AArch64TargetLowering::LowerReturn(SDValue Chain, CallingConv::ID CallConv,
   return DAG.getNode(AArch64ISD::RET_FLAG, DL, MVT::Other, RetOps);
 }
 
-#ifdef LLVM_BUILD_GLOBAL_ISEL
-bool AArch64TargetLowering::LowerReturn(MachineIRBuilder &MIRBuilder,
-                                        const Value *Val, unsigned VReg) const {
-  MachineInstr *Return = MIRBuilder.buildInstr(AArch64::RET_ReallyLR);
-  assert(Return && "Unable to build a return instruction?!");
-
-  assert(((Val && VReg) || (!Val && !VReg)) && "Return value without a vreg");
-  if (VReg) {
-    assert(Val->getType()->isIntegerTy() && "Type not supported yet");
-    unsigned Size = Val->getType()->getPrimitiveSizeInBits();
-    assert((Size == 64 || Size == 32) && "Size not supported yet");
-    unsigned ResReg = (Size == 32) ? AArch64::W0 : AArch64::X0;
-    // Set the insertion point to be right before Return.
-    MIRBuilder.setInstr(*Return, /* Before */ true);
-    MachineInstr *Copy =
-        MIRBuilder.buildInstr(TargetOpcode::COPY, ResReg, VReg);
-    (void)Copy;
-    assert(Copy->getNextNode() == Return &&
-           "The insertion did not happen where we expected");
-    MachineInstrBuilder(MIRBuilder.getMF(), Return)
-        .addReg(ResReg, RegState::Implicit);
-  }
-  return true;
-}
-
-bool AArch64TargetLowering::LowerFormalArguments(
-    MachineIRBuilder &MIRBuilder, const Function::ArgumentListType &Args,
-    const SmallVectorImpl<unsigned> &VRegs) const {
-  MachineFunction &MF = MIRBuilder.getMF();
-  const Function &F = *MF.getFunction();
-
-  SmallVector<CCValAssign, 16> ArgLocs;
-  CCState CCInfo(F.getCallingConv(), F.isVarArg(), MF, ArgLocs, F.getContext());
-
-  unsigned NumArgs = Args.size();
-  Function::const_arg_iterator CurOrigArg = Args.begin();
-  for (unsigned i = 0; i != NumArgs; ++i, ++CurOrigArg) {
-    MVT ValVT = MVT::getVT(CurOrigArg->getType());
-    CCAssignFn *AssignFn =
-        CCAssignFnForCall(F.getCallingConv(), /*IsVarArg=*/false);
-    bool Res =
-        AssignFn(i, ValVT, ValVT, CCValAssign::Full, ISD::ArgFlagsTy(), CCInfo);
-    assert(!Res && "Call operand has unhandled type");
-    (void)Res;
-  }
-  assert(ArgLocs.size() == Args.size() &&
-         "We have a different number of location and args?!");
-  for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
-    CCValAssign &VA = ArgLocs[i];
-
-    assert(VA.isRegLoc() && "Not yet implemented");
-    // Transform the arguments in physical registers into virtual ones.
-    MIRBuilder.getMBB().addLiveIn(VA.getLocReg());
-    MIRBuilder.buildInstr(TargetOpcode::COPY, VRegs[i], VA.getLocReg());
-
-    switch (VA.getLocInfo()) {
-    default:
-      llvm_unreachable("Unknown loc info!");
-    case CCValAssign::Full:
-      break;
-    case CCValAssign::BCvt:
-      // We don't care about bitcast.
-      break;
-    case CCValAssign::AExt:
-    case CCValAssign::SExt:
-    case CCValAssign::ZExt:
-      // Zero/Sign extend the register.
-      assert(0 && "Not yet implemented");
-      break;
-    }
-  }
-  return true;
-}
-#endif
-
 //===----------------------------------------------------------------------===//
 //  Other Lowering Code
 //===----------------------------------------------------------------------===//