[PATCH] D109359: [TableGen] Optionally emit a warning for unused template args

Cullen Rhodes via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Sep 7 05:53:12 PDT 2021


c-rhodes added a comment.

I've attached the output from make when building all targets (LLVM + Clang) with this flag turned on, F18896322: unused-args-warnings.txt <https://reviews.llvm.org/F18896322>.

~3500 warnings are emitted:

  grep "warning: unused template argument" unused-args-warnings.txt | wc -l
  3528

but most of them are repeats:

  grep "warning: unused template argument" unused-args-warnings.txt | sort -u | wc -l
  178

so there's 178 in total:

  llvm/include/llvm/IR/IntrinsicsAArch64.td:1368:30: warning: unused template argument: Builtin_SVCVT:name
  llvm/include/llvm/IR/IntrinsicsNVVM.td:317:28: warning: unused template argument: NVVM_MMA_OPS:_
  llvm/include/llvm/IR/IntrinsicsSystemZ.td:147:38: warning: unused template argument: SystemZCompareBHFG::name
  llvm/include/llvm/Option/OptParser.td:217:91: warning: unused template argument: MarshallingInfoBooleanFlag:name
  llvm/include/llvm/Target/TargetSelectionDAG.td:1475:40: warning: unused template argument: binary_atomic_op_ord::atomic_op
  llvm/include/llvm/Target/TargetSelectionDAG.td:1503:41: warning: unused template argument: ternary_atomic_op_ord::atomic_op
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:10877:42: warning: unused template argument: SIMDIndexedTiedComplexHSD::U
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:10878:68: warning: unused template argument: SIMDIndexedTiedComplexHSD::OpNode
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:1709:58: warning: unused template argument: BaseAuthLoad:opr
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:2199:51: warning: unused template argument: MulAccum::AccNode
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:3427:63: warning: unused template argument: LoadStore8RO:regtype
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:3505:64: warning: unused template argument: LoadStore16RO:regtype
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:3577:64: warning: unused template argument: LoadStore32RO:regtype
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:3649:64: warning: unused template argument: LoadStore64RO:regtype
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:3721:65: warning: unused template argument: LoadStore128RO:regtype
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:3769:45: warning: unused template argument: Store128RO::Ty
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:3769:67: warning: unused template argument: Store128RO::storeop
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:6824:61: warning: unused template argument: SIMDThreeScalarHSTied::OpNode
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:7242:36: warning: unused template argument: SIMDDupFromElement:elttype
  llvm/lib/Target/AArch64/AArch64InstrFormats.td:7684:33: warning: unused template argument: SIMDScalarCPY::asm
  llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td:1123:125: warning: unused template argument: sve_prefetch::scale
  llvm/lib/Target/AArch64/SMEInstrFormats.td:481:64: warning: unused template argument: sme_vector_to_tile_aliases::imm_ty
  llvm/lib/Target/AArch64/SVEInstrFormats.td:1941:50: warning: unused template argument: sve_fp_3op_p_zds_zx::op
  llvm/lib/Target/AArch64/SVEInstrFormats.td:1941:72: warning: unused template argument: sve_fp_3op_p_zds_zx::rev_op
  llvm/lib/Target/AArch64/SVEInstrFormats.td:5099:59: warning: unused template argument: sve_int_index_ri::step_vector
  llvm/lib/Target/AArch64/SVEInstrFormats.td:5133:59: warning: unused template argument: sve_int_index_rr::step_vector
  llvm/lib/Target/AMDGPU/BUFInstructions.td:226:62: warning: unused template argument: MTBUF_Pseudo_Loads::load_vt
  llvm/lib/Target/AMDGPU/BUFInstructions.td:227:54: warning: unused template argument: MTBUF_Pseudo_Loads::ld
  llvm/lib/Target/AMDGPU/BUFInstructions.td:268:64: warning: unused template argument: MTBUF_Pseudo_Stores::store_vt
  llvm/lib/Target/AMDGPU/BUFInstructions.td:269:55: warning: unused template argument: MTBUF_Pseudo_Stores::st
  llvm/lib/Target/AMDGPU/BUFInstructions.td:544:54: warning: unused template argument: MUBUF_Pseudo_Loads::ld
  llvm/lib/Target/AMDGPU/BUFInstructions.td:58:31: warning: unused template argument: getMTBUFElements:Op
  llvm/lib/Target/AMDGPU/BUFInstructions.td:745:59: warning: unused template argument: MUBUF_Pseudo_Atomics_NO_RTN::atomic
  llvm/lib/Target/AMDGPU/EvergreenInstructions.td:306:34: warning: unused template argument: AtomicPat::inst_ret
  llvm/lib/Target/AMDGPU/EvergreenInstructions.td:307:40: warning: unused template argument: AtomicPat::node_ret
  llvm/lib/Target/AMDGPU/EvergreenInstructions.td:314:40: warning: unused template argument: AtomicIncDecPat::inst_ret
  llvm/lib/Target/AMDGPU/EvergreenInstructions.td:315:40: warning: unused template argument: AtomicIncDecPat::node_ret
  llvm/lib/Target/AMDGPU/FLATInstructions.td:206:48: warning: unused template argument: FLAT_Global_Load_AddTid_Pseudo:HasSignedOffset
  llvm/lib/Target/AMDGPU/FLATInstructions.td:244:25: warning: unused template argument: FLAT_Global_Store_AddTid_Pseudo:HasSignedOffset
  llvm/lib/Target/AMDGPU/FLATInstructions.td:415:30: warning: unused template argument: FLAT_Global_Atomic_Pseudo_NO_RTN::atomic
  llvm/lib/Target/AMDGPU/R600Instructions.td:213:32: warning: unused template argument: R600_REDUCTION:inst
  llvm/lib/Target/AMDGPU/R600Instructions.td:816:26: warning: unused template argument: MOV_IMM:vt
  llvm/lib/Target/AMDGPU/SIInstrInfo.td:1859:24: warning: unused template argument: getAsmVOP3P:HasDst
  llvm/lib/Target/AMDGPU/SIInstrInfo.td:1860:52: warning: unused template argument: getAsmVOP3P:DstVT
  llvm/lib/Target/AMDGPU/SIInstrInfo.td:1878:28: warning: unused template argument: getAsmVOP3OpSel:HasOMod
  llvm/lib/Target/AMDGPU/SIInstrInfo.td:2021:52: warning: unused template argument: getHasDPP:DstVT
  llvm/lib/Target/AMDGPU/SIInstrInfo.td:2021:76: warning: unused template argument: getHasDPP:Src0VT
  llvm/lib/Target/AMDGPU/SIInstrInfo.td:2022:37: warning: unused template argument: getHasDPP:Src1VT
  llvm/lib/Target/AMDGPU/SIRegisterInfo.td:129:68: warning: unused template argument: SIRegWithSubRegs:regIdx
  llvm/lib/Target/AMDGPU/SOPInstructions.td:1110:25: warning: unused template argument: SOPP_Real:op
  llvm/lib/Target/AMDGPU/SOPInstructions.td:716:25: warning: unused template argument: SOPK_Real:op
  llvm/lib/Target/AMDGPU/VOP2Instructions.td:157:51: warning: unused template argument: VOP2Inst_sdwa::node
  llvm/lib/Target/AMDGPU/VOP2Instructions.td:158:41: warning: unused template argument: VOP2Inst_sdwa::revOp
  llvm/lib/Target/AMDGPU/VOP2Instructions.td:930:33: warning: unused template argument: VOP2_DPP8:opName
  llvm/lib/Target/AMDGPU/VOP3Instructions.td:531:66: warning: unused template argument: Ternary_i16_Pats::op3
  llvm/lib/Target/AMDGPU/VOP3Instructions.td:547:70: warning: unused template argument: Ternary_i16_Pats_gfx9::op3
  llvm/lib/Target/AMDGPU/VOP3PInstructions.td:116:38: warning: unused template argument: MadFmaMixPats::mix_inst
  llvm/lib/Target/AMDGPU/VOP3PInstructions.td:54:52: warning: unused template argument: VOP3_VOP3PInst::node
  llvm/lib/Target/AMDGPU/VOPInstructions.td:61:34: warning: unused template argument: VOP3Common:VOP3Only
  llvm/lib/Target/AMDGPU/VOPInstructions.td:86:35: warning: unused template argument: VOP3_Pseudo:VOP3Only
  llvm/lib/Target/ARM/ARMInstrInfo.td:1592:54: warning: unused template argument: AsI1_rbin_irs::Commutable
  llvm/lib/Target/ARM/ARMInstrInfo.td:1696:62: warning: unused template argument: AsI1_rbin_s_is::iir
  llvm/lib/Target/ARM/ARMInstrInfo.td:1698:44: warning: unused template argument: AsI1_rbin_s_is::Commutable
  llvm/lib/Target/ARM/ARMInstrMVE.td:2920:49: warning: unused template argument: MVE_VxSHRN:pattern
  llvm/lib/Target/ARM/ARMInstrMVE.td:2963:52: warning: unused template argument: MVE_VxQRSHRUN:pattern
  llvm/lib/Target/ARM/ARMInstrMVE.td:3014:51: warning: unused template argument: MVE_VxQRSHRN:pattern
  llvm/lib/Target/ARM/ARMInstrMVE.td:3615:45: warning: unused template argument: MVE_VMULT_fp_m::bit_21
  llvm/lib/Target/ARM/ARMInstrMVE.td:5141:54: warning: unused template argument: MVE_qr_base:itin
  llvm/lib/Target/ARM/ARMInstrMVE.td:6175:32: warning: unused template argument: MVE_VLDRSTR_cs:im
  llvm/lib/Target/ARM/ARMInstrNEON.td:2734:33: warning: unused template argument: N3VDIntnp:f
  llvm/lib/Target/ARM/ARMInstrNEON.td:2736:46: warning: unused template argument: N3VDIntnp:Commutable
  llvm/lib/Target/ARM/ARMInstrNEON.td:2789:46: warning: unused template argument: N3VQIntnp:Commutable
  llvm/lib/Target/ARM/ARMInstrNEON.td:2798:46: warning: unused template argument: N3VQInt3np:Commutable
  llvm/lib/Target/ARM/ARMInstrNEON.td:3118:46: warning: unused template argument: N3VLIntnp:Commutable
  llvm/lib/Target/ARM/ARMInstrNEON.td:4044:31: warning: unused template argument: N2VShR_QHSD::baseOpc
  llvm/lib/Target/ARM/ARMInstrNEON.td:4990:60: warning: unused template argument: N3VCP8ComplexTied::Op
  llvm/lib/Target/ARM/ARMInstrNEON.td:5010:60: warning: unused template argument: N3VCP8ComplexOdd::Op
  llvm/lib/Target/ARM/ARMInstrNEON.td:5036:52: warning: unused template argument: N3VCP8ComplexTiedLane::Op
  llvm/lib/Target/ARM/ARMInstrNEON.td:7075:64: warning: unused template argument: VEXTq:immTy
  llvm/lib/Target/Hexagon/HexagonInstrFormats.td:271:54: warning: unused template argument: InstDuplex:pattern
  llvm/lib/Target/Hexagon/HexagonPseudo.td:201:34: warning: unused template argument: Call_nr:isPred
  llvm/lib/Target/Hexagon/HexagonPseudo.td:270:39: warning: unused template argument: JumpOpcStr:New
  llvm/lib/Target/Lanai/LanaiInstrInfo.td:272:57: warning: unused template argument: ALUbase::OpNode
  llvm/lib/Target/Mips/MicroMips32r6InstrFormats.td:961:39: warning: unused template argument: CMP_BRANCH_OFF21_FM_MMR6:opstr
  llvm/lib/Target/Mips/MicroMips32r6InstrInfo.td:1200:71: warning: unused template argument: SB16_MMR6_DESC_BASE:RO
  llvm/lib/Target/Mips/MicroMips32r6InstrInfo.td:1201:45: warning: unused template argument: SB16_MMR6_DESC_BASE:OpNode
  llvm/lib/Target/Mips/MicroMips32r6InstrInfo.td:409:44: warning: unused template argument: CACHE_HINT_MMR6_DESC:GPROpnd
  llvm/lib/Target/Mips/MicroMipsDSPInstrInfo.td:284:63: warning: unused template argument: EXT_MM_2R_DESC_BASE:OpNode
  llvm/lib/Target/Mips/MicroMipsDSPInstrInfo.td:291:63: warning: unused template argument: EXT_MM_1R_DESC_BASE:OpNode
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:198:62: warning: unused template argument: CompactBranchMM:cond_op
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:243:55: warning: unused template argument: StorePairMM:Addr
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:251:54: warning: unused template argument: LoadPairMM:Addr
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:335:63: warning: unused template argument: LoadMM16:OpNode
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:344:61: warning: unused template argument: StoreMM16:RO
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:345:35: warning: unused template argument: StoreMM16:OpNode
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:503:58: warning: unused template argument: LoadWordIndexedScaledMM:OpNode
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:544:70: warning: unused template argument: StoreMultMM:Addr
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:552:70: warning: unused template argument: LoadMultMM:Addr
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:561:43: warning: unused template argument: StoreMultMM16:Addr
  llvm/lib/Target/Mips/MicroMipsInstrInfo.td:570:42: warning: unused template argument: LoadMultMM16:Addr
  llvm/lib/Target/Mips/Mips16InstrInfo.td:307:49: warning: unused template argument: FMULT16_ins:itin
  llvm/lib/Target/Mips/Mips16InstrInfo.td:314:52: warning: unused template argument: FMULT16_LO_ins:itin
  llvm/lib/Target/Mips/Mips32r6InstrInfo.td:704:39: warning: unused template argument: CACHE_HINT_DESC:GPROpnd
  llvm/lib/Target/Mips/MipsDSPInstrInfo.td:401:67: warning: unused template argument: EXTR_W_TY1_R2_DESC_BASE:OpNode
  llvm/lib/Target/Mips/MipsDSPInstrInfo.td:410:67: warning: unused template argument: EXTR_W_TY1_R1_DESC_BASE:OpNode
  llvm/lib/Target/Mips/MipsDSPInstrInfo.td:525:74: warning: unused template argument: BPOSGE32_PSEUDO_DESC_BASE:itin
  llvm/lib/Target/Mips/MipsEVAInstrInfo.td:73:54: warning: unused template argument: STORE_EVA_DESC_BASE:OpNode
  llvm/lib/Target/Mips/MipsMSAInstrInfo.td:1311:41: warning: unused template argument: MSA_2R_FILL_PSEUDO_BASE:VT
  llvm/lib/Target/Mips/MipsMSAInstrInfo.td:3759:58: warning: unused template argument: MSA_CBRANCH_PSEUDO_DESC_BASE:itin
  llvm/lib/Target/NVPTX/NVPTXIntrinsics.td:1235:11: warning: unused template argument: F_ATOMIC_2_NEG_imp::IMMType
  llvm/lib/Target/PowerPC/PPCInstrFormats.td:892:64: warning: unused template argument: XForm_htm0:pattern
  llvm/lib/Target/PowerPC/PPCInstrFormats.td:906:64: warning: unused template argument: XForm_htm1:pattern
  llvm/lib/Target/PowerPC/PPCInstrFormats.td:919:46: warning: unused template argument: XForm_htm2:pattern
  llvm/lib/Target/PowerPC/PPCInstrFormats.td:933:46: warning: unused template argument: XForm_htm3:pattern
  llvm/lib/Target/PowerPC/PPCInstrInfo.td:1275:55: warning: unused template argument: XOForm_1rx::oe
  llvm/lib/Target/PowerPC/PPCInstrPrefix.td:624:48: warning: unused template argument: 8LS_DForm_R_XTp5_SI34_MEM_p::pref
  llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td:2385:35: warning: unused template argument: VPatTernaryNoMask:mask_type
  llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td:2408:45: warning: unused template argument: VPatTernaryNoMaskWithPolicy:mask_type
  llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td:106:37: warning: unused template argument: VPatBinarySDNode_VV:mask_type
  llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td:110:32: warning: unused template argument: VPatBinarySDNode_VV:RetClass
  llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td:125:37: warning: unused template argument: VPatBinarySDNode_XI:mask_type
  llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td:129:32: warning: unused template argument: VPatBinarySDNode_XI:RetClass
  llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td:170:37: warning: unused template argument: VPatBinarySDNode_VF:mask_type
  llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td:174:32: warning: unused template argument: VPatBinarySDNode_VF:RetClass
  llvm/lib/Target/RISCV/RISCVInstrInfoV.td:670:75: warning: unused template argument: VCMP_IV_V_X::optype
  llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td:276:33: warning: unused template argument: VPatBinaryVL_VV::RetClass
  llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td:307:33: warning: unused template argument: VPatBinaryVL_XI::RetClass
  llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td:377:28: warning: unused template argument: VPatBinaryVL_VF:RetClass
  llvm/lib/Target/RISCV/RISCVRegisterInfo.td:375:35: warning: unused template argument: SubRegSet:LIn
  llvm/lib/Target/RISCV/RISCVRegisterInfo.td:375:44: warning: unused template argument: SubRegSet:start
  llvm/lib/Target/Sparc/SparcInstrInfo.td:372:64: warning: unused template argument: LoadASI:OpNode
  llvm/lib/Target/Sparc/SparcInstrInfo.td:373:43: warning: unused template argument: LoadASI:Ty
  llvm/lib/Target/Sparc/SparcInstrInfo.td:373:69: warning: unused template argument: LoadASI:itin
  llvm/lib/Target/Sparc/SparcInstrInfo.td:415:34: warning: unused template argument: StoreASI:OpNode
  llvm/lib/Target/Sparc/SparcInstrInfo.td:415:70: warning: unused template argument: StoreASI:Ty
  llvm/lib/Target/WebAssembly/WebAssemblyInstrAtomics.td:662:58: warning: unused template argument: BinRMWTruncExtPattern::rmw_64
  llvm/lib/Target/WebAssembly/WebAssemblyInstrAtomics.td:898:58: warning: unused template argument: TerRMWTruncExtPattern::rmw_64
  llvm/lib/Target/X86/X86InstrAVX512.td:10164:18: warning: unused template argument: WriteShuffle256_BQ::OpNode
  llvm/lib/Target/X86/X86InstrAVX512.td:11488:72: warning: unused template argument: avx512_movddup_common::OpNode
  llvm/lib/Target/X86/X86InstrAVX512.td:11674:64: warning: unused template argument: avx512_shufp::VTInfo_I
  llvm/lib/Target/X86/X86InstrAVX512.td:1189:44: warning: unused template argument: avx512_broadcast_scalar::opc
  llvm/lib/Target/X86/X86InstrAVX512.td:1189:56: warning: unused template argument: avx512_broadcast_scalar::OpcodeStr
  llvm/lib/Target/X86/X86InstrAVX512.td:1211:45: warning: unused template argument: avx512_broadcast_rm_split::Name
  llvm/lib/Target/X86/X86InstrAVX512.td:5590:54: warning: unused template argument: avx512_fp_scalar_round::IsCommutable
  llvm/lib/Target/X86/X86InstrAVX512.td:5842:55: warning: unused template argument: avx512_fp_binop_ph::IsPD128Commutable
  llvm/lib/Target/X86/X86InstrAVX512.td:6026:33: warning: unused template argument: avx512_vptest::Name
  llvm/lib/Target/X86/X86InstrAVX512.td:6766:58: warning: unused template argument: avx512_fma3p_213_rm::Suff
  llvm/lib/Target/X86/X86InstrAVX512.td:6797:60: warning: unused template argument: avx512_fma3_213_round::Suff
  llvm/lib/Target/X86/X86InstrAVX512.td:6859:58: warning: unused template argument: avx512_fma3p_231_rm::Suff
  llvm/lib/Target/X86/X86InstrAVX512.td:6892:60: warning: unused template argument: avx512_fma3_231_round::Suff
  llvm/lib/Target/X86/X86InstrAVX512.td:6953:58: warning: unused template argument: avx512_fma3p_132_rm::Suff
  llvm/lib/Target/X86/X86InstrAVX512.td:6988:60: warning: unused template argument: avx512_fma3_132_round::Suff
  llvm/lib/Target/X86/X86InstrAVX512.td:7647:32: warning: unused template argument: avx512_cvt_s::aliasStr
  llvm/lib/Target/X86/X86InstrAVX512.td:8110:48: warning: unused template argument: avx512_cvt_trunc::bcast256
  llvm/lib/Target/X86/X86InstrAVX512.td:8111:48: warning: unused template argument: avx512_cvt_trunc::bcast512
  llvm/lib/Target/X86/X86InstrAVX512.td:8113:49: warning: unused template argument: avx512_cvt_trunc::loadVT256
  llvm/lib/Target/X86/X86InstrAVX512.td:8114:49: warning: unused template argument: avx512_cvt_trunc::loadVT512
  llvm/lib/Target/X86/X86InstrAVX512.td:8116:55: warning: unused template argument: avx512_cvt_trunc::maskRC256
  llvm/lib/Target/X86/X86InstrAVX512.td:8117:55: warning: unused template argument: avx512_cvt_trunc::maskRC512
  llvm/lib/Target/X86/X86InstrAVX512.td:9240:54: warning: unused template argument: avx512_ord_cmp_sae::d
  llvm/lib/Target/X86/X86InstrAVX512.td:9864:53: warning: unused template argument: avx512_trunc_mr_lowering::DestInfo
  llvm/lib/Target/X86/X86InstrAVX512.td:9909:66: warning: unused template argument: avx512_trunc_qb::OpNode
  llvm/lib/Target/X86/X86InstrAVX512.td:9910:46: warning: unused template argument: avx512_trunc_qb::MaskNode
  llvm/lib/Target/X86/X86InstrFMA.td:430:32: warning: unused template argument: fma4s_int::VT
  llvm/lib/Target/X86/X86InstrFMA.td:606:56: warning: unused template argument: scalar_fma4_patterns::EltVT
  llvm/lib/Target/X86/X86InstrSSE.td:191:40: warning: unused template argument: sse12_move_rr::x86memop
  llvm/lib/Target/X86/X86InstrSSE.td:2269:43: warning: unused template argument: sse12_fp_packed_logical::OpNode
  llvm/lib/Target/X86/X86InstrSSE.td:2793:37: warning: unused template argument: sse_fp_unop_s::ScalarVT
  llvm/lib/Target/X86/X86InstrSSE.td:2821:45: warning: unused template argument: sse_fp_unop_s_intr::RC
  llvm/lib/Target/X86/X86InstrSSE.td:2823:56: warning: unused template argument: sse_fp_unop_s_intr::Suffix
  llvm/lib/Target/X86/X86InstrSSE.td:2844:45: warning: unused template argument: avx_fp_unop_s_intr::RC
  llvm/lib/Target/X86/X86InstrSSE.td:2975:40: warning: unused template argument: sse1_fp_unop_s_intr::opc
  llvm/lib/Target/X86/X86InstrSSE.td:2975:70: warning: unused template argument: sse1_fp_unop_s_intr::OpNode
  llvm/lib/Target/X86/X86InstrSSE.td:2976:47: warning: unused template argument: sse1_fp_unop_s_intr::sched
  llvm/lib/Target/X86/X86InstrSSE.td:43:52: warning: unused template argument: sse12_fp_scalar_int::OpcodeStr
  llvm/lib/Target/X86/X86InstrSSE.td:7895:40: warning: unused template argument: avx2_gather::MTx
  llvm/lib/Target/X86/X86InstrSSE.td:7895:61: warning: unused template argument: avx2_gather::MTy
  llvm/lib/Target/X86/X86InstrVecCompiler.td:115:60: warning: unused template argument: subvec_zero_lowering::ZeroTy

this `llvm/lib/Target/AArch64/SMEInstrFormats.td:481:64: warning: unused template argument: sme_vector_to_tile_aliases::imm_ty` diagnoses a bug I recently discovered and was the reason I thought this warning would be useful.


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