[AMDGPU] Remove selectStoreIntrinsic (NFC)

The last use was removed on Jan 13, 2020 in commit
533d650e947a2f7216a315aeb8c79ac1d4740e5f.

diff --git a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
index a697ce2..ab3ce98 100644 (file)
--- a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
@@ -1762,97 +1762,6 @@ AMDGPURegisterBankInfo::splitBufferOffsets(MachineIRBuilder &B,
   return {BaseReg, C1};
 }
 
-static bool isZero(Register Reg, MachineRegisterInfo &MRI) {
-  int64_t C;
-  return mi_match(Reg, MRI, m_ICst(C)) && C == 0;
-}
-
-static unsigned extractCPol(unsigned CachePolicy) {
-  return CachePolicy & AMDGPU::CPol::ALL;
-}
-
-static unsigned extractSWZ(unsigned CachePolicy) {
-  return (CachePolicy >> 3) & 1;
-}
-
-
-MachineInstr *
-AMDGPURegisterBankInfo::selectStoreIntrinsic(MachineIRBuilder &B,
-                                             MachineInstr &MI) const {
-  MachineRegisterInfo &MRI = *B.getMRI();
-  executeInWaterfallLoop(B, MI, MRI, {2, 4});
-
-  // FIXME: DAG lowering brokenly changes opcode based on FP vs. integer.
-
-  Register VData = MI.getOperand(1).getReg();
-  LLT Ty = MRI.getType(VData);
-
-  int EltSize = Ty.getScalarSizeInBits();
-  int Size = Ty.getSizeInBits();
-
-  // FIXME: Broken integer truncstore.
-  if (EltSize != 32)
-    report_fatal_error("unhandled intrinsic store");
-
-  // FIXME: Verifier should enforce 1 MMO for these intrinsics.
-  const int MemSize = (*MI.memoperands_begin())->getSize();
-
-
-  Register RSrc = MI.getOperand(2).getReg();
-  Register VOffset = MI.getOperand(3).getReg();
-  Register SOffset = MI.getOperand(4).getReg();
-  unsigned CachePolicy = MI.getOperand(5).getImm();
-
-  unsigned ImmOffset;
-  std::tie(VOffset, ImmOffset) = splitBufferOffsets(B, VOffset);
-
-  const bool Offen = !isZero(VOffset, MRI);
-
-  unsigned Opc = AMDGPU::BUFFER_STORE_DWORD_OFFEN_exact;
-  switch (8 * MemSize) {
-  case 8:
-    Opc = Offen ? AMDGPU::BUFFER_STORE_BYTE_OFFEN_exact :
-                  AMDGPU::BUFFER_STORE_BYTE_OFFSET_exact;
-    break;
-  case 16:
-    Opc = Offen ? AMDGPU::BUFFER_STORE_SHORT_OFFEN_exact :
-                  AMDGPU::BUFFER_STORE_SHORT_OFFSET_exact;
-    break;
-  default:
-    Opc = Offen ? AMDGPU::BUFFER_STORE_DWORD_OFFEN_exact :
-                  AMDGPU::BUFFER_STORE_DWORD_OFFSET_exact;
-    if (Size > 32)
-      Opc = AMDGPU::getMUBUFOpcode(Opc, Size / 32);
-    break;
-  }
-
-
-  // Set the insertion point back to the instruction in case it was moved into a
-  // loop.
-  B.setInstr(MI);
-
-  MachineInstrBuilder MIB = B.buildInstr(Opc)
-    .addUse(VData);
-
-  if (Offen)
-    MIB.addUse(VOffset);
-
-  MIB.addUse(RSrc)
-     .addUse(SOffset)
-     .addImm(ImmOffset)
-     .addImm(extractCPol(CachePolicy))
-     .addImm(0) // tfe: FIXME: Remove from inst
-     .addImm(extractSWZ(CachePolicy))
-     .cloneMemRefs(MI);
-
-  // FIXME: We need a way to report failure from applyMappingImpl.
-  // Insert constrain copies before inserting the loop.
-  if (!constrainSelectedInstRegOperands(*MIB, *TII, *TRI, *this))
-    report_fatal_error("failed to constrain selected store intrinsic");
-
-  return MIB;
-}
-
 bool AMDGPURegisterBankInfo::buildVCopy(MachineIRBuilder &B, Register DstReg,
                                         Register SrcReg) const {
   MachineRegisterInfo &MRI = *B.getMRI();

diff --git a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.h b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.h
index 7e051e4..2b9d092 100644 (file)
--- a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.h
@@ -89,9 +89,6 @@ public:
   std::pair<Register, unsigned>
   splitBufferOffsets(MachineIRBuilder &B, Register Offset) const;
 
-  MachineInstr *selectStoreIntrinsic(MachineIRBuilder &B,
-                                     MachineInstr &MI) const;
-
   /// See RegisterBankInfo::applyMapping.
   void applyMappingImpl(const OperandsMapper &OpdMapper) const override;