Revert "R600: Add new intrinsic to read work dimensions"

This reverts commit r219705.

CodeGen/R600/work-item-intrinsics.ll was failing on linux.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219707 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/IR/IntrinsicsR600.td

@@ -33,14 +33,10 @@ defm int_r600_read_tgid : R600ReadPreloadRegisterIntrinsic_xyz <
                                        "__builtin_r600_read_tgid">;
 defm int_r600_read_tidig : R600ReadPreloadRegisterIntrinsic_xyz <
                                        "__builtin_r600_read_tidig">;
+
 } // End TargetPrefix = "r600"
 
 let TargetPrefix = "AMDGPU" in {
-
-class AMDGPUReadPreloadRegisterIntrinsic<string name>
-  : Intrinsic<[llvm_i32_ty], [], [IntrNoMem]>,
-    GCCBuiltin<name>;
-
 def int_AMDGPU_div_scale : GCCBuiltin<"__builtin_amdgpu_div_scale">,
   // 1st parameter: Numerator
   // 2nd parameter: Denominator
@@ -76,7 +72,4 @@ def int_AMDGPU_rsq_clamped : GCCBuiltin<"__builtin_amdgpu_rsq_clamped">,
 def int_AMDGPU_ldexp : GCCBuiltin<"__builtin_amdgpu_ldexp">,
   Intrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>, llvm_i32_ty], [IntrNoMem]>;
 
-def int_AMDGPU_read_workdim : AMDGPUReadPreloadRegisterIntrinsic <
-                                       "__builtin_amdgpu_read_workdim">;
-
 } // End TargetPrefix = "AMDGPU"

lib/Target/R600/AMDGPUMachineFunction.h

@@ -30,9 +30,6 @@ public:
   /// Number of bytes in the LDS that are being used.
   unsigned LDSSize;
 
-  /// Start of implicit kernel args
-  unsigned ABIArgOffset;
-
   unsigned getShaderType() const {
     return ShaderType;
   }

lib/Target/R600/R600ISelLowering.cpp

@@ -809,9 +809,6 @@ SDValue R600TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const
     case Intrinsic::r600_read_local_size_z:
       return LowerImplicitParameter(DAG, VT, DL, 8);
 
-    case Intrinsic::AMDGPU_read_workdim:
-      return LowerImplicitParameter(DAG, VT, DL, MFI->ABIArgOffset / 4);
-
     case Intrinsic::r600_read_tgid_x:
       return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
                                   AMDGPU::T1_X, VT);
@@ -1701,7 +1698,7 @@ SDValue R600TargetLowering::LowerFormalArguments(
   CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), ArgLocs,
                  *DAG.getContext());
   MachineFunction &MF = DAG.getMachineFunction();
-  R600MachineFunctionInfo *MFI = MF.getInfo<R600MachineFunctionInfo>();
+  unsigned ShaderType = MF.getInfo<R600MachineFunctionInfo>()->getShaderType();
 
   SmallVector<ISD::InputArg, 8> LocalIns;
 
@@ -1719,7 +1716,7 @@ SDValue R600TargetLowering::LowerFormalArguments(
       MemVT = MemVT.getVectorElementType();
     }
 
-    if (MFI->getShaderType() != ShaderType::COMPUTE) {
+    if (ShaderType != ShaderType::COMPUTE) {
       unsigned Reg = MF.addLiveIn(VA.getLocReg(), &AMDGPU::R600_Reg128RegClass);
       SDValue Register = DAG.getCopyFromReg(Chain, DL, Reg, VT);
       InVals.push_back(Register);
@@ -1751,18 +1748,16 @@ SDValue R600TargetLowering::LowerFormalArguments(
 
     unsigned ValBase = ArgLocs[In.OrigArgIndex].getLocMemOffset();
     unsigned PartOffset = VA.getLocMemOffset();
-    unsigned Offset = 36 + VA.getLocMemOffset();
 
     MachinePointerInfo PtrInfo(UndefValue::get(PtrTy), PartOffset - ValBase);
     SDValue Arg = DAG.getLoad(ISD::UNINDEXED, Ext, VT, DL, Chain,
-                              DAG.getConstant(Offset, MVT::i32),
+                              DAG.getConstant(36 + PartOffset, MVT::i32),
                               DAG.getUNDEF(MVT::i32),
                               PtrInfo,
                               MemVT, false, true, true, 4);
 
     // 4 is the preferred alignment for the CONSTANT memory space.
     InVals.push_back(Arg);
-    MFI->ABIArgOffset = Offset + MemVT.getStoreSize();
   }
   return Chain;
 }

lib/Target/R600/SIISelLowering.cpp

@@ -519,11 +519,11 @@ SDValue SITargetLowering::LowerFormalArguments(
     if (VA.isMemLoc()) {
       VT = Ins[i].VT;
       EVT MemVT = Splits[i].VT;
-      const unsigned Offset = 36 + VA.getLocMemOffset();
       // The first 36 bytes of the input buffer contains information about
       // thread group and global sizes.
       SDValue Arg = LowerParameter(DAG, VT, MemVT,  DL, DAG.getRoot(),
-                                   Offset, Ins[i].Flags.isSExt());
+                                   36 + VA.getLocMemOffset(),
+                                   Ins[i].Flags.isSExt());
 
       const PointerType *ParamTy =
           dyn_cast<PointerType>(FType->getParamType(Ins[i].OrigArgIndex));
@@ -537,7 +537,6 @@ SDValue SITargetLowering::LowerFormalArguments(
       }
 
       InVals.push_back(Arg);
-      Info->ABIArgOffset = Offset + MemVT.getStoreSize();
       continue;
     }
     assert(VA.isRegLoc() && "Parameter must be in a register!");
@@ -928,12 +927,6 @@ SDValue SITargetLowering::LowerINTRINSIC_WO_CHAIN(SDValue Op,
   case Intrinsic::r600_read_local_size_z:
     return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
                           SI::KernelInputOffsets::LOCAL_SIZE_Z, false);
-
-  case Intrinsic::AMDGPU_read_workdim:
-    return LowerParameter(DAG, VT, VT, DL, DAG.getEntryNode(),
-                          MF.getInfo<SIMachineFunctionInfo>()->ABIArgOffset,
-                          false);
-
   case Intrinsic::r600_read_tgid_x:
     return CreateLiveInRegister(DAG, &AMDGPU::SReg_32RegClass,
       TRI->getPreloadedValue(MF, SIRegisterInfo::TGID_X), VT);

test/CodeGen/R600/work-item-intrinsics.ll

@@ -128,20 +128,6 @@ entry:
   ret void
 }
 
-; FUNC-LABEL: @get_work_dim
-; EG: MEM_RAT_CACHELESS STORE_RAW [[VAL:T[0-9]+\.X]]
-; EG: MOV [[VAL]], KC0[2].Z
-
-; SI: S_LOAD_DWORD [[VAL:s[0-9]+]], s[0:1], 0xb
-; SI: V_MOV_B32_e32 [[VVAL:v[0-9]+]], [[VAL]]
-; SI: BUFFER_STORE_DWORD [[VVAL]]
-define void @get_work_dim (i32 addrspace(1)* %out) {
-entry:
-  %0 = call i32 @llvm.r600.read.workdim() #0
-  store i32 %0, i32 addrspace(1)* %out
-  ret void
-}
-
 ; The tgid values are stored in sgprs offset by the number of user sgprs.
 ; Currently we always use exactly 2 user sgprs for the pointer to the
 ; kernel arguments, but this may change in the future.
@@ -223,6 +209,4 @@ declare i32 @llvm.r600.read.tidig.x() #0
 declare i32 @llvm.r600.read.tidig.y() #0
 declare i32 @llvm.r600.read.tidig.z() #0
 
-declare i32 @llvm.r600.read.workdim() #0
-
 attributes #0 = { readnone }