[clang] b6d0ee0 - Revert HWASAN failure (#74163)

Kirill Stoimenov via cfe-commits cfe-commits at lists.llvm.org
Mon Dec 4 11:04:08 PST 2023


Author: Kirill Stoimenov
Date: 2023-12-02T04:39:14Z
New Revision: b6d0ee056d247e1ecfd4ecd3f97fb2d31740d79b

URL: https://github.com/llvm/llvm-project/commit/b6d0ee056d247e1ecfd4ecd3f97fb2d31740d79b
DIFF: https://github.com/llvm/llvm-project/commit/b6d0ee056d247e1ecfd4ecd3f97fb2d31740d79b.diff

LOG: Revert HWASAN failure (#74163)

This is the failure:
https://lab.llvm.org/buildbot/#/builders/236/builds/7728/steps/10/logs/stdio

This started with eef8e1d206dc01c081a0ca29b7f9e0c39d33446e, but because
there were a couple of patches that came after that I had to revert all
3 of them because of merge conflicts.

Added: 
    

Modified: 
    clang/test/Driver/aarch64-v95a.c
    llvm/include/llvm/TargetParser/AArch64TargetParser.h
    llvm/lib/Target/AArch64/AArch64.td
    llvm/lib/Target/AArch64/AArch64InstrFormats.td
    llvm/lib/Target/AArch64/AArch64InstrInfo.td
    llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
    llvm/lib/Target/AArch64/AArch64SchedA64FX.td
    llvm/lib/Target/AArch64/AArch64SchedNeoverseN2.td
    llvm/lib/Target/AArch64/AArch64SchedNeoverseV1.td
    llvm/lib/Target/AArch64/AArch64SchedNeoverseV2.td
    llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
    llvm/lib/Target/AArch64/SVEInstrFormats.td
    llvm/test/MC/AArch64/basic-a64-diagnostics.s
    llvm/test/MC/AArch64/basic-a64-instructions.s
    llvm/test/MC/Disassembler/AArch64/basic-a64-instructions.txt
    llvm/unittests/TargetParser/TargetParserTest.cpp

Removed: 
    llvm/test/MC/AArch64/SVE/armv9.5a-cpa.s
    llvm/test/MC/AArch64/armv9.5a-cpa.s
    llvm/test/MC/Disassembler/AArch64/armv9.5a-cpa.txt


################################################################################
diff  --git a/clang/test/Driver/aarch64-v95a.c b/clang/test/Driver/aarch64-v95a.c
index 366cade86a9fb..6044a4f155db0 100644
--- a/clang/test/Driver/aarch64-v95a.c
+++ b/clang/test/Driver/aarch64-v95a.c
@@ -13,8 +13,3 @@
 // RUN: %clang -target aarch64_be -mbig-endian -march=armv9.5-a -### -c %s 2>&1 | FileCheck -check-prefix=GENERICV95A-BE %s
 // GENERICV95A-BE: "-cc1"{{.*}} "-triple" "aarch64_be{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v9.5a"
 
-// ===== Features supported on aarch64 =====
-
-// RUN: %clang -target aarch64 -march=armv9.5a+cpa -### -c %s 2>&1 | FileCheck -check-prefix=V95A-CPA %s
-// RUN: %clang -target aarch64 -march=armv9.5-a+cpa -### -c %s 2>&1 | FileCheck -check-prefix=V95A-CPA %s
-// V95A-CPA: "-cc1"{{.*}} "-triple" "aarch64{{.*}}" "-target-cpu" "generic" "-target-feature" "+neon" "-target-feature" "+v9.5a" "-target-feature" "+cpa"

diff  --git a/llvm/include/llvm/TargetParser/AArch64TargetParser.h b/llvm/include/llvm/TargetParser/AArch64TargetParser.h
index 0711f013a3779..17cafd146b0e7 100644
--- a/llvm/include/llvm/TargetParser/AArch64TargetParser.h
+++ b/llvm/include/llvm/TargetParser/AArch64TargetParser.h
@@ -173,7 +173,6 @@ enum ArchExtKind : unsigned {
   AEK_SMEF8F16 =      69, // FEAT_SME_F8F16
   AEK_SMEF8F32 =      70, // FEAT_SME_F8F32
   AEK_SMEFA64 =       71, // FEAT_SME_FA64
-  AEK_CPA =           72, // FEAT_CPA
   AEK_NUM_EXTENSIONS
 };
 using ExtensionBitset = Bitset<AEK_NUM_EXTENSIONS>;
@@ -296,7 +295,6 @@ inline constexpr ExtensionInfo Extensions[] = {
     {"sme-f8f16", AArch64::AEK_SMEF8F16, "+sme-f8f16", "-sme-f8f16", FEAT_INIT, "+sme2,+fp8", 0},
     {"sme-f8f32", AArch64::AEK_SMEF8F32, "+sme-f8f32", "-sme-f8f32", FEAT_INIT, "+sme2,+fp8", 0},
     {"sme-fa64",  AArch64::AEK_SMEFA64,  "+sme-fa64", "-sme-fa64",  FEAT_INIT, "", 0},
-    {"cpa", AArch64::AEK_CPA, "+cpa", "-cpa", FEAT_INIT, "", 0},
     // Special cases
     {"none", AArch64::AEK_NONE, {}, {}, FEAT_INIT, "", ExtensionInfo::MaxFMVPriority},
 };
@@ -380,8 +378,7 @@ inline constexpr ArchInfo ARMV9_3A  = { VersionTuple{9, 3}, AProfile, "armv9.3-a
                                         AArch64::ExtensionBitset({AArch64::AEK_MOPS, AArch64::AEK_HBC}))};
 inline constexpr ArchInfo ARMV9_4A  = { VersionTuple{9, 4}, AProfile, "armv9.4-a", "+v9.4a", (ARMV9_3A.DefaultExts |
                                         AArch64::ExtensionBitset({AArch64::AEK_SPECRES2, AArch64::AEK_CSSC, AArch64::AEK_RASv2}))};
-inline constexpr ArchInfo ARMV9_5A  = { VersionTuple{9, 5}, AProfile, "armv9.5-a", "+v9.5a", (ARMV9_4A.DefaultExts |
-                                        AArch64::ExtensionBitset({AArch64::AEK_CPA}))};
+inline constexpr ArchInfo ARMV9_5A  = { VersionTuple{9, 5}, AProfile, "armv9.5-a", "+v9.5a", (ARMV9_4A.DefaultExts)};
 // For v8-R, we do not enable crypto and align with GCC that enables a more minimal set of optional architecture extensions.
 inline constexpr ArchInfo ARMV8R    = { VersionTuple{8, 0}, RProfile, "armv8-r", "+v8r", (ARMV8_5A.DefaultExts |
                                         AArch64::ExtensionBitset({AArch64::AEK_SSBS,

diff  --git a/llvm/lib/Target/AArch64/AArch64.td b/llvm/lib/Target/AArch64/AArch64.td
index d1dbced2466ea..ff256c9a8ccdf 100644
--- a/llvm/lib/Target/AArch64/AArch64.td
+++ b/llvm/lib/Target/AArch64/AArch64.td
@@ -622,9 +622,6 @@ def FeatureLdpAlignedOnly : SubtargetFeature<"ldp-aligned-only", "HasLdpAlignedO
 def FeatureStpAlignedOnly : SubtargetFeature<"stp-aligned-only", "HasStpAlignedOnly",
     "true", "In order to emit stp, first check if the store will be aligned to 2 * element_size">;
 
-def FeatureCPA : SubtargetFeature<"cpa", "HasCPA", "true",
-  "Enable ARMv9.5-A Checked Pointer Arithmetic (FEAT_CPA)">;
-
 //===----------------------------------------------------------------------===//
 // Architectures.
 //
@@ -695,7 +692,7 @@ def HasV9_4aOps : SubtargetFeature<
 
 def HasV9_5aOps : SubtargetFeature<
   "v9.5a", "HasV9_5aOps", "true", "Support ARM v9.5a instructions",
-  [HasV9_4aOps, FeatureCPA]>;
+  [HasV9_4aOps]>;
 
 def HasV8_0rOps : SubtargetFeature<
   "v8r", "HasV8_0rOps", "true", "Support ARM v8r instructions",

diff  --git a/llvm/lib/Target/AArch64/AArch64InstrFormats.td b/llvm/lib/Target/AArch64/AArch64InstrFormats.td
index 690ac0dcda621..68e87f491a09e 100644
--- a/llvm/lib/Target/AArch64/AArch64InstrFormats.td
+++ b/llvm/lib/Target/AArch64/AArch64InstrFormats.td
@@ -12446,58 +12446,6 @@ class SystemPXtI<bit L, string asm> :
   BaseSYSPEncoding<L, asm, "\t$op1, $Cn, $Cm, $op2, $Rt", (outs),
   (ins imm0_7:$op1, sys_cr_op:$Cn, sys_cr_op:$Cm, imm0_7:$op2, XSeqPairClassOperand:$Rt)>;
 
-//----------------------------------------------------------------------------
-// 2023 Armv9.5 Extensions
-//----------------------------------------------------------------------------
-
-//---
-// Checked Pointer Arithmetic (FEAT_CPA)
-//---
-
-def LSLImm3ShiftOperand : AsmOperandClass {
-  let SuperClasses = [ExtendOperandLSL64];
-  let Name = "LSLImm3Shift";
-  let RenderMethod = "addLSLImm3ShifterOperands";
-  let DiagnosticType = "AddSubLSLImm3ShiftLarge";
-}
-
-def lsl_imm3_shift_operand : Operand<i32> {
-  let PrintMethod = "printShifter";
-  let ParserMatchClass = LSLImm3ShiftOperand;
-}
-
-// Base CPA scalar add/subtract with lsl #imm3 shift
-class BaseAddSubCPA<bit isSub, string asm> : I<(outs GPR64sp:$Rd),
-    (ins GPR64sp:$Rn, GPR64:$Rm, lsl_imm3_shift_operand:$shift_imm),
-    asm, "\t$Rd, $Rn, $Rm$shift_imm", "", []>, Sched<[]> {
-  bits<5> Rd;
-  bits<5> Rn;
-  bits<5> Rm;
-  bits<3> shift_imm;
-  let Inst{31} = 0b1;
-  let Inst{30} = isSub;
-  let Inst{29-21} = 0b011010000;
-  let Inst{20-16} = Rm;
-  let Inst{15-13} = 0b001;
-  let Inst{12-10} = shift_imm;
-  let Inst{9-5} = Rn;
-  let Inst{4-0} = Rd;
-}
-
-// Alias for CPA scalar add/subtract with no shift
-class AddSubCPAAlias<string asm, Instruction inst>
-    : InstAlias<asm#"\t$Rd, $Rn, $Rm",
-                (inst GPR64sp:$Rd, GPR64sp:$Rn, GPR64:$Rm, 0)>;
-
-multiclass AddSubCPA<bit isSub, string asm> {
-  def _shift : BaseAddSubCPA<isSub, asm>;
-  def _noshift : AddSubCPAAlias<asm, !cast<Instruction>(NAME#"_shift")>;
-}
-
-class MulAccumCPA<bit isSub, string asm>
-  : BaseMulAccum<isSub, 0b011, GPR64, GPR64, asm, []>, Sched<[]> {
-  let Inst{31} = 0b1;
-}
 
 //----------------------------------------------------------------------------
 // Allow the size specifier tokens to be upper case, not just lower.

diff  --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.td b/llvm/lib/Target/AArch64/AArch64InstrInfo.td
index 60cd94f4ff8e1..935667488194a 100644
--- a/llvm/lib/Target/AArch64/AArch64InstrInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.td
@@ -289,8 +289,6 @@ def HasCHK           : Predicate<"Subtarget->hasCHK()">,
                        AssemblerPredicateWithAll<(all_of FeatureCHK), "chk">;
 def HasGCS           : Predicate<"Subtarget->hasGCS()">,
                        AssemblerPredicateWithAll<(all_of FeatureGCS), "gcs">;
-def HasCPA           : Predicate<"Subtarget->hasCPA()">,
-                       AssemblerPredicateWithAll<(all_of FeatureCPA), "cpa">;
 def IsLE             : Predicate<"Subtarget->isLittleEndian()">;
 def IsBE             : Predicate<"!Subtarget->isLittleEndian()">;
 def IsWindows        : Predicate<"Subtarget->isTargetWindows()">;
@@ -9390,10 +9388,6 @@ let Predicates = [HasD128] in {
   }
 }
 
-//===----------------------------===//
-// 2023 Architecture Extensions:
-//===----------------------------===//
-
 let Predicates = [HasFP8] in {
   defm F1CVTL  : SIMDMixedTwoVectorFP8<0b00, "f1cvtl">;
   defm F2CVTL  : SIMDMixedTwoVectorFP8<0b01, "f2cvtl">;
@@ -9435,19 +9429,6 @@ let Predicates = [HasFP8DOT4] in {
  defm FDOT : SIMDThreeSameVectorDOT4<"fdot">;
 } // End let Predicates = [HasFP8DOT4]
 
-//===----------------------------------------------------------------------===//
-// Checked Pointer Arithmetic (FEAT_CPA)
-//===----------------------------------------------------------------------===//
-let Predicates = [HasCPA] in {
-  // Scalar add/subtract
-  defm ADDPT : AddSubCPA<0, "addpt">;
-  defm SUBPT : AddSubCPA<1, "subpt">;
-
-  // Scalar multiply-add/subtract
-  def MADDPT : MulAccumCPA<0, "maddpt">;
-  def MSUBPT : MulAccumCPA<1, "msubpt">;
-}
-
 include "AArch64InstrAtomics.td"
 include "AArch64SVEInstrInfo.td"
 include "AArch64SMEInstrInfo.td"

diff  --git a/llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td b/llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
index 25ef8e1acfa4f..21cafe9b6c445 100644
--- a/llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
@@ -4163,24 +4163,3 @@ let Predicates = [HasSVE2orSME2, HasLUT] in {
 // LUTI4 (two contiguous registers)
   defm LUTI4_Z2ZZI  : sve2_luti4_vector_vg2_index<"luti4">;
 } // End HasSVE2orSME2, HasLUT
-
-//===----------------------------------------------------------------------===//
-// Checked Pointer Arithmetic (FEAT_CPA)
-//===----------------------------------------------------------------------===//
-let Predicates = [HasSVE, HasCPA] in {
-  // Add/subtract (vectors, unpredicated)
-  def ADD_ZZZ_CPA : sve_int_bin_cons_arit_0<0b11, 0b010, "addpt", ZPR64>;
-  def SUB_ZZZ_CPA : sve_int_bin_cons_arit_0<0b11, 0b011, "subpt", ZPR64>;
-
-  // Add/subtract (vectors, predicated)
-  let DestructiveInstType = DestructiveBinaryComm in {
-    def ADD_ZPmZ_CPA : sve_int_bin_pred_arit_log<0b11, 0b00, 0b100, "addpt", ZPR64>;
-    def SUB_ZPmZ_CPA : sve_int_bin_pred_arit_log<0b11, 0b00, 0b101, "subpt", ZPR64>;
-  }
-
-  // Multiply-add vectors, writing multiplicand
-  def MAD_CPA : sve_int_mad_cpa<"madpt">;
-
-  // Multiply-add vectors, writing addend
-  def MLA_CPA : sve_int_mla_cpa<"mlapt">;
-}

diff  --git a/llvm/lib/Target/AArch64/AArch64SchedA64FX.td b/llvm/lib/Target/AArch64/AArch64SchedA64FX.td
index 77ec445366ffc..65b97ff6956a1 100644
--- a/llvm/lib/Target/AArch64/AArch64SchedA64FX.td
+++ b/llvm/lib/Target/AArch64/AArch64SchedA64FX.td
@@ -24,7 +24,7 @@ def A64FXModel : SchedMachineModel {
     [HasSVE2, HasSVE2AES, HasSVE2SM4, HasSVE2SHA3, HasSVE2BitPerm, HasPAuth,
      HasSVE2orSME, HasMTE, HasMatMulInt8, HasBF16, HasSME2, HasSME2p1, HasSVE2p1,
      HasSVE2p1_or_HasSME2p1, HasSMEF16F16, HasSSVE_FP8FMA, HasSMEF8F16, HasSMEF8F32,
-     HasSMEFA64, HasCPA];
+     HasSMEFA64];
 
   let FullInstRWOverlapCheck = 0;
 }

diff  --git a/llvm/lib/Target/AArch64/AArch64SchedNeoverseN2.td b/llvm/lib/Target/AArch64/AArch64SchedNeoverseN2.td
index 53cf725f0e235..503de3bee2b86 100644
--- a/llvm/lib/Target/AArch64/AArch64SchedNeoverseN2.td
+++ b/llvm/lib/Target/AArch64/AArch64SchedNeoverseN2.td
@@ -19,7 +19,7 @@ def NeoverseN2Model : SchedMachineModel {
   let CompleteModel         =   1;
 
   list<Predicate> UnsupportedFeatures = !listconcat(SMEUnsupported.F,
-                                                    [HasSVE2p1, HasCPA]);
+                                                    [HasSVE2p1]);
 }
 
 //===----------------------------------------------------------------------===//

diff  --git a/llvm/lib/Target/AArch64/AArch64SchedNeoverseV1.td b/llvm/lib/Target/AArch64/AArch64SchedNeoverseV1.td
index 75fbb85dce9d1..726be1a547b95 100644
--- a/llvm/lib/Target/AArch64/AArch64SchedNeoverseV1.td
+++ b/llvm/lib/Target/AArch64/AArch64SchedNeoverseV1.td
@@ -28,7 +28,7 @@ def NeoverseV1Model : SchedMachineModel {
 
   list<Predicate> UnsupportedFeatures = !listconcat(SVE2Unsupported.F,
                                                     SMEUnsupported.F,
-                                                    [HasMTE, HasCPA]);
+                                                    [HasMTE]);
 }
 
 //===----------------------------------------------------------------------===//

diff  --git a/llvm/lib/Target/AArch64/AArch64SchedNeoverseV2.td b/llvm/lib/Target/AArch64/AArch64SchedNeoverseV2.td
index 658d7cdd23a63..3367d5d0cd315 100644
--- a/llvm/lib/Target/AArch64/AArch64SchedNeoverseV2.td
+++ b/llvm/lib/Target/AArch64/AArch64SchedNeoverseV2.td
@@ -22,7 +22,7 @@ def NeoverseV2Model : SchedMachineModel {
   let CompleteModel         =   1;
 
   list<Predicate> UnsupportedFeatures = !listconcat(SMEUnsupported.F,
-                                                    [HasSVE2p1, HasCPA]);
+                                                    [HasSVE2p1]);
 }
 
 //===----------------------------------------------------------------------===//

diff  --git a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
index 3f28d6deb0d3c..fbe1bf3c5238d 100644
--- a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
+++ b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
@@ -1541,13 +1541,6 @@ class AArch64Operand : public MCParsedAsmOperand {
            getShiftExtendAmount() <= 4;
   }
 
-  bool isLSLImm3Shift() const {
-    if (!isShiftExtend())
-      return false;
-    AArch64_AM::ShiftExtendType ET = getShiftExtendType();
-    return ET == AArch64_AM::LSL && getShiftExtendAmount() <= 7;
-  }
-
   template<int Width> bool isMemXExtend() const {
     if (!isExtend())
       return false;
@@ -2098,12 +2091,6 @@ class AArch64Operand : public MCParsedAsmOperand {
     Inst.addOperand(MCOperand::createImm(Imm));
   }
 
-  void addLSLImm3ShifterOperands(MCInst &Inst, unsigned N) const {
-    assert(N == 1 && "Invalid number of operands!");
-    unsigned Imm = getShiftExtendAmount();
-    Inst.addOperand(MCOperand::createImm(Imm));
-  }
-
   void addSyspXzrPairOperand(MCInst &Inst, unsigned N) const {
     assert(N == 1 && "Invalid number of operands!");
 
@@ -3677,7 +3664,6 @@ static const struct Extension {
     {"sme-f8f16", {AArch64::FeatureSMEF8F16}},
     {"sme-f8f32", {AArch64::FeatureSMEF8F32}},
     {"sme-fa64",  {AArch64::FeatureSMEFA64}},
-    {"cpa", {AArch64::FeatureCPA}},
 };
 
 static void setRequiredFeatureString(FeatureBitset FBS, std::string &Str) {
@@ -6078,9 +6064,6 @@ bool AArch64AsmParser::showMatchError(SMLoc Loc, unsigned ErrCode,
         "Invalid vector list, expected list with each SVE vector in the list "
         "4 registers apart, and the first register in the range [z0, z3] or "
         "[z16, z19] and with correct element type");
-  case Match_AddSubLSLImm3ShiftLarge:
-    return Error(Loc,
-      "expected 'lsl' with optional integer in range [0, 7]");
   default:
     llvm_unreachable("unexpected error code!");
   }
@@ -6465,7 +6448,6 @@ bool AArch64AsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
   case Match_InvalidMemoryIndexed8:
   case Match_InvalidMemoryIndexed16:
   case Match_InvalidCondCode:
-  case Match_AddSubLSLImm3ShiftLarge:
   case Match_AddSubRegExtendSmall:
   case Match_AddSubRegExtendLarge:
   case Match_AddSubSecondSource:

diff  --git a/llvm/lib/Target/AArch64/SVEInstrFormats.td b/llvm/lib/Target/AArch64/SVEInstrFormats.td
index cd2de130b3ce6..c0894e9c70680 100644
--- a/llvm/lib/Target/AArch64/SVEInstrFormats.td
+++ b/llvm/lib/Target/AArch64/SVEInstrFormats.td
@@ -10424,34 +10424,3 @@ multiclass sve2_luti4_vector_vg2_index<string mnemonic> {
     let Inst{23-22} = idx;
   }
 }
-
-//===----------------------------------------------------------------------===//
-// Checked Pointer Arithmetic (FEAT_CPA)
-//===----------------------------------------------------------------------===//
-class sve_int_mad_cpa<string asm>
-    : I<(outs ZPR64:$Zdn), (ins ZPR64:$_Zdn, ZPR64:$Zm, ZPR64:$Za),
-        asm, "\t$Zdn, $Zm, $Za", "", []>, Sched<[]> {
-  bits<5> Zdn;
-  bits<5> Zm;
-  bits<5> Za;
-  let Inst{31-24} = 0b01000100;
-  let Inst{23-22} = 0b11; // sz
-  let Inst{21}    = 0b0;
-  let Inst{20-16} = Zm;
-  let Inst{15}    = 0b1;
-  let Inst{14-10} = 0b10110; // opc
-  let Inst{9-5}   = Za;
-  let Inst{4-0}   = Zdn;
-
-  let Constraints = "$Zdn = $_Zdn";
-  let DestructiveInstType = DestructiveOther;
-  let ElementSize = ZPR64.ElementSize;
-  let hasSideEffects = 0;
-}
-
-class sve_int_mla_cpa<string asm>
-    : sve2_int_mla<0b11, 0b10100, asm, ZPR64, ZPR64> {
-  let Inst{15} = 0b1;
-
-  let ElementSize = ZPR64.ElementSize;
-}

diff  --git a/llvm/test/MC/AArch64/SVE/armv9.5a-cpa.s b/llvm/test/MC/AArch64/SVE/armv9.5a-cpa.s
deleted file mode 100644
index 2d6708bd1829a..0000000000000
--- a/llvm/test/MC/AArch64/SVE/armv9.5a-cpa.s
+++ /dev/null
@@ -1,69 +0,0 @@
-// RUN: llvm-mc -triple=aarch64 -show-encoding -mattr=+sve -mattr=+cpa < %s \
-// RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
-// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sme -mattr=+cpa < %s 2>&1 \
-// RUN:        | FileCheck %s --check-prefixes=CHECK-ERROR-NO-SVE
-// RUN: not llvm-mc -triple=aarch64 -show-encoding < %s 2>&1 \
-// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
-// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+cpa < %s 2>&1 \
-// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR-NO-SVE
-// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sve < %s 2>&1 \
-// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR-NO-CPA
-// RUN: not llvm-mc -triple=aarch64 -show-encoding -mattr=+sme < %s 2>&1 \
-// RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
-// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sve -mattr=+cpa < %s \
-// RUN:        | llvm-objdump -d --mattr=+sve --mattr=+cpa - \
-// RUN:        | FileCheck %s --check-prefix=CHECK-INST
-// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sve -mattr=+cpa < %s \
-// RUN:        | llvm-objdump -d --mattr=+sve --mattr=-cpa - \
-// RUN:        | FileCheck %s --check-prefix=CHECK-UNKNOWN
-// RUN: llvm-mc -triple=aarch64 -filetype=obj -mattr=+sve -mattr=+cpa < %s \
-// RUN:        | llvm-objdump -d --mattr=-sve --mattr=+cpa - \
-// RUN:        | FileCheck %s --check-prefix=CHECK-UNKNOWN
-
-addpt z23.d, z13.d, z8.d
-// CHECK-INST: addpt z23.d, z13.d, z8.d
-// CHECK-ENCODING: [0xb7,0x09,0xe8,0x04]
-// CHECK-ERROR: instruction requires: cpa sve
-// CHECK-ERROR-NO-SVE: instruction requires: sve
-// CHECK-ERROR-NO-CPA: instruction requires: cpa
-// CHECK-UNKNOWN: 04e809b7 <unknown>
-
-addpt z23.d, p3/m, z23.d, z13.d
-// CHECK-INST: addpt z23.d, p3/m, z23.d, z13.d
-// CHECK-ENCODING: [0xb7,0x0d,0xc4,0x04]
-// CHECK-ERROR: instruction requires: cpa sve
-// CHECK-ERROR-NO-SVE: instruction requires: sve
-// CHECK-ERROR-NO-CPA: instruction requires: cpa
-// CHECK-UNKNOWN: 04c40db7 <unknown>
-
-subpt z23.d, z13.d, z8.d
-// CHECK-INST: subpt z23.d, z13.d, z8.d
-// CHECK-ENCODING: [0xb7,0x0d,0xe8,0x04]
-// CHECK-ERROR: instruction requires: cpa sve
-// CHECK-ERROR-NO-SVE: instruction requires: sve
-// CHECK-ERROR-NO-CPA: instruction requires: cpa
-// CHECK-UNKNOWN: 04e80db7 <unknown>
-
-subpt z23.d, p3/m, z23.d, z13.d
-// CHECK-INST: subpt z23.d, p3/m, z23.d, z13.d
-// CHECK-ENCODING: [0xb7,0x0d,0xc5,0x04]
-// CHECK-ERROR: instruction requires: cpa sve
-// CHECK-ERROR-NO-SVE: instruction requires: sve
-// CHECK-ERROR-NO-CPA: instruction requires: cpa
-// CHECK-UNKNOWN: 04c50db7 <unknown>
-
-madpt z0.d, z1.d, z31.d
-// CHECK-INST: madpt z0.d, z1.d, z31.d
-// CHECK-ENCODING: [0xe0,0xdb,0xc1,0x44]
-// CHECK-ERROR: instruction requires: cpa sve
-// CHECK-ERROR-NO-SVE: instruction requires: sve
-// CHECK-ERROR-NO-CPA: instruction requires: cpa
-// CHECK-UNKNOWN: 44c1dbe0 <unknown>
-
-mlapt z0.d, z1.d, z31.d
-// CHECK-INST: mlapt z0.d, z1.d, z31.d
-// CHECK-ENCODING: [0x20,0xd0,0xdf,0x44]
-// CHECK-ERROR: instruction requires: cpa sve
-// CHECK-ERROR-NO-SVE: instruction requires: sve
-// CHECK-ERROR-NO-CPA: instruction requires: cpa
-// CHECK-UNKNOWN: 44dfd020 <unknown>

diff  --git a/llvm/test/MC/AArch64/armv9.5a-cpa.s b/llvm/test/MC/AArch64/armv9.5a-cpa.s
deleted file mode 100644
index 1c338eccf6cac..0000000000000
--- a/llvm/test/MC/AArch64/armv9.5a-cpa.s
+++ /dev/null
@@ -1,50 +0,0 @@
-// RUN: llvm-mc -triple aarch64 -show-encoding -mattr=+cpa < %s | FileCheck %s
-// RUN: not llvm-mc -triple aarch64 < %s 2>&1 | FileCheck --check-prefix=ERROR-NO-CPA %s
-
-addpt x0, x1, x2
-// CHECK: addpt x0, x1, x2               // encoding: [0x20,0x20,0x02,0x9a]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-addpt sp, sp, x2
-// CHECK: addpt sp, sp, x2               // encoding: [0xff,0x23,0x02,0x9a]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-addpt x0, x1, x2, lsl #0
-// CHECK: addpt x0, x1, x2               // encoding: [0x20,0x20,0x02,0x9a]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-addpt x0, x1, x2, lsl #7
-// CHECK: addpt x0, x1, x2, lsl #7       // encoding: [0x20,0x3c,0x02,0x9a]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-addpt sp, sp, x2, lsl #7
-// CHECK: addpt sp, sp, x2, lsl #7       // encoding: [0xff,0x3f,0x02,0x9a]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-subpt x0, x1, x2
-// CHECK: subpt x0, x1, x2               // encoding: [0x20,0x20,0x02,0xda]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-subpt sp, sp, x2
-// CHECK: subpt sp, sp, x2               // encoding: [0xff,0x23,0x02,0xda]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-subpt x0, x1, x2, lsl #0
-// CHECK: subpt x0, x1, x2               // encoding: [0x20,0x20,0x02,0xda]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-subpt x0, x1, x2, lsl #7
-// CHECK: subpt x0, x1, x2, lsl #7       // encoding: [0x20,0x3c,0x02,0xda]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-subpt sp, sp, x2, lsl #7
-// CHECK: subpt sp, sp, x2, lsl #7       // encoding: [0xff,0x3f,0x02,0xda]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-maddpt x0, x1, x2, x3
-// CHECK: maddpt x0, x1, x2, x3          // encoding: [0x20,0x0c,0x62,0x9b]
-// ERROR-NO-CPA: error: instruction requires: cpa
-
-msubpt x0, x1, x2, x3
-// CHECK: msubpt x0, x1, x2, x3          // encoding: [0x20,0x8c,0x62,0x9b]
-// ERROR-NO-CPA: error: instruction requires: cpa

diff  --git a/llvm/test/MC/AArch64/basic-a64-diagnostics.s b/llvm/test/MC/AArch64/basic-a64-diagnostics.s
index a59861e13472a..a7dc310df59e2 100644
--- a/llvm/test/MC/AArch64/basic-a64-diagnostics.s
+++ b/llvm/test/MC/AArch64/basic-a64-diagnostics.s
@@ -3604,8 +3604,6 @@
         msr ID_AA64AFR1_EL1, x12
         msr ID_AA64ISAR0_EL1, x12
         msr ID_AA64ISAR1_EL1, x12
-        msr ID_AA64ISAR2_EL1, x12
-        msr ID_AA64ISAR3_EL1, x12
         msr ID_AA64MMFR0_EL1, x12
         msr ID_AA64MMFR1_EL1, x12
         msr ID_AA64MMFR2_EL1, x12
@@ -3755,12 +3753,6 @@
 // CHECK-ERROR-NEXT:         msr ID_AA64ISAR1_EL1, x12
 // CHECK-ERROR-NEXT:             ^
 // CHECK-ERROR-NEXT: error: expected writable system register or pstate
-// CHECK-ERROR-NEXT:         msr ID_AA64ISAR2_EL1, x12
-// CHECK-ERROR-NEXT:             ^
-// CHECK-ERROR-NEXT: error: expected writable system register or pstate
-// CHECK-ERROR-NEXT:         msr ID_AA64ISAR3_EL1, x12
-// CHECK-ERROR-NEXT:             ^
-// CHECK-ERROR-NEXT: error: expected writable system register or pstate
 // CHECK-ERROR-NEXT:         msr ID_AA64MMFR0_EL1, x12
 // CHECK-ERROR-NEXT:             ^
 // CHECK-ERROR-NEXT: error: expected writable system register or pstate

diff  --git a/llvm/test/MC/AArch64/basic-a64-instructions.s b/llvm/test/MC/AArch64/basic-a64-instructions.s
index 0ae23d672e4a3..227b6d5c7f687 100644
--- a/llvm/test/MC/AArch64/basic-a64-instructions.s
+++ b/llvm/test/MC/AArch64/basic-a64-instructions.s
@@ -4374,8 +4374,6 @@ _func:
 	mrs x9, ID_AA64AFR1_EL1
 	mrs x9, ID_AA64ISAR0_EL1
 	mrs x9, ID_AA64ISAR1_EL1
-	mrs x9, ID_AA64ISAR2_EL1
-	mrs x9, ID_AA64ISAR3_EL1
 	mrs x9, ID_AA64MMFR0_EL1
 	mrs x9, ID_AA64MMFR1_EL1
 	mrs x9, ID_AA64MMFR2_EL1
@@ -4714,8 +4712,6 @@ _func:
 // CHECK: mrs      x9, {{id_aa64afr1_el1|ID_AA64AFR1_EL1}}        // encoding: [0xa9,0x05,0x38,0xd5]
 // CHECK: mrs      x9, {{id_aa64isar0_el1|ID_AA64ISAR0_EL1}}       // encoding: [0x09,0x06,0x38,0xd5]
 // CHECK: mrs      x9, {{id_aa64isar1_el1|ID_AA64ISAR1_EL1}}       // encoding: [0x29,0x06,0x38,0xd5]
-// CHECK: mrs      x9, {{id_aa64isar2_el1|ID_AA64ISAR2_EL1}}       // encoding: [0x49,0x06,0x38,0xd5]
-// CHECK: mrs      x9, {{id_aa64isar3_el1|ID_AA64ISAR3_EL1}}       // encoding: [0x69,0x06,0x38,0xd5]
 // CHECK: mrs      x9, {{id_aa64mmfr0_el1|ID_AA64MMFR0_EL1}}       // encoding: [0x09,0x07,0x38,0xd5]
 // CHECK: mrs      x9, {{id_aa64mmfr1_el1|ID_AA64MMFR1_EL1}}       // encoding: [0x29,0x07,0x38,0xd5]
 // CHECK: mrs      x9, {{id_aa64mmfr2_el1|ID_AA64MMFR2_EL1}}       // encoding: [0x49,0x07,0x38,0xd5]

diff  --git a/llvm/test/MC/Disassembler/AArch64/armv9.5a-cpa.txt b/llvm/test/MC/Disassembler/AArch64/armv9.5a-cpa.txt
deleted file mode 100644
index bf61782f912a3..0000000000000
--- a/llvm/test/MC/Disassembler/AArch64/armv9.5a-cpa.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-# RUN: llvm-mc -triple aarch64 -disassemble -mattr=+cpa < %s | FileCheck %s
-# RUN: not llvm-mc -triple aarch64 -disassemble < %s 2>&1 | FileCheck --check-prefix=NO-CPA %s
-
-[0x20,0x20,0x02,0x9a]
-# CHECK: addpt x0, x1, x2
-# NO-CPA: warning: invalid instruction encoding
-
-[0xff,0x23,0x02,0x9a]
-# CHECK: addpt sp, sp, x2
-# NO-CPA: warning: invalid instruction encoding
-
-[0x20,0x3c,0x02,0x9a]
-# CHECK: addpt x0, x1, x2, lsl #7
-# NO-CPA: warning: invalid instruction encoding
-
-[0xff,0x3f,0x02,0x9a]
-# CHECK: addpt sp, sp, x2, lsl #7
-# NO-CPA: warning: invalid instruction encoding
-
-[0x20,0x20,0x02,0xda]
-# CHECK: subpt x0, x1, x2
-# NO-CPA: warning: invalid instruction encoding
-
-[0xff,0x23,0x02,0xda]
-# CHECK: subpt sp, sp, x2
-# NO-CPA: warning: invalid instruction encoding
-
-[0x20,0x3c,0x02,0xda]
-# CHECK: subpt x0, x1, x2, lsl #7
-# NO-CPA: warning: invalid instruction encoding
-
-[0xff,0x3f,0x02,0xda]
-# CHECK: subpt sp, sp, x2, lsl #7
-# NO-CPA: warning: invalid instruction encoding
-
-[0x20,0x0c,0x62,0x9b]
-# CHECK: maddpt x0, x1, x2, x3
-# NO-CPA: warning: invalid instruction encoding
-
-[0x20,0x8c,0x62,0x9b]
-# CHECK: msubpt x0, x1, x2, x3
-# NO-CPA: warning: invalid instruction encoding

diff  --git a/llvm/test/MC/Disassembler/AArch64/basic-a64-instructions.txt b/llvm/test/MC/Disassembler/AArch64/basic-a64-instructions.txt
index c76bb0b902096..55e4accad621d 100644
--- a/llvm/test/MC/Disassembler/AArch64/basic-a64-instructions.txt
+++ b/llvm/test/MC/Disassembler/AArch64/basic-a64-instructions.txt
@@ -3565,7 +3565,6 @@
 # CHECK: mrs      x9, {{id_aa64isar0_el1|ID_AA64ISAR0_EL1}}
 # CHECK: mrs      x9, {{id_aa64isar1_el1|ID_AA64ISAR1_EL1}}
 # CHECK: mrs      x9, {{id_aa64isar2_el1|ID_AA64ISAR2_EL1}}
-# CHECK: mrs      x9, {{id_aa64isar2_el1|ID_AA64ISAR3_EL1}}
 # CHECK: mrs      x9, {{id_aa64mmfr0_el1|ID_AA64MMFR0_EL1}}
 # CHECK: mrs      x9, {{id_aa64mmfr1_el1|ID_AA64MMFR1_EL1}}
 # CHECK: mrs      x9, {{id_aa64mmfr2_el1|ID_AA64MMFR2_EL1}}
@@ -4189,7 +4188,6 @@
 0x9 0x6 0x38 0xd5
 0x29 0x6 0x38 0xd5
 0x49 0x06 0x38 0xd5
-0x69 0x06 0x38 0xd5
 0x9 0x7 0x38 0xd5
 0x29 0x7 0x38 0xd5
 0x49 0x7 0x38 0xd5

diff  --git a/llvm/unittests/TargetParser/TargetParserTest.cpp b/llvm/unittests/TargetParser/TargetParserTest.cpp
index 8e1a29d13fa63..abd87b455aceb 100644
--- a/llvm/unittests/TargetParser/TargetParserTest.cpp
+++ b/llvm/unittests/TargetParser/TargetParserTest.cpp
@@ -1807,8 +1807,7 @@ TEST(TargetParserTest, AArch64ExtensionFeatures) {
       AArch64::AEK_SSVE_FP8DOT2, AArch64::AEK_FP8DOT4,
       AArch64::AEK_SSVE_FP8DOT4, AArch64::AEK_LUT,
       AArch64::AEK_SME_LUTv2,    AArch64::AEK_SMEF8F16,
-      AArch64::AEK_SMEF8F32,     AArch64::AEK_SMEFA64,
-      AArch64::AEK_CPA};
+      AArch64::AEK_SMEF8F32,     AArch64::AEK_SMEFA64};
 
   std::vector<StringRef> Features;
 
@@ -1894,7 +1893,6 @@ TEST(TargetParserTest, AArch64ExtensionFeatures) {
   EXPECT_TRUE(llvm::is_contained(Features, "+sme-f8f16"));
   EXPECT_TRUE(llvm::is_contained(Features, "+sme-f8f32"));
   EXPECT_TRUE(llvm::is_contained(Features, "+sme-fa64"));
-  EXPECT_TRUE(llvm::is_contained(Features, "+cpa"));
 
   // Assuming we listed every extension above, this should produce the same
   // result. (note that AEK_NONE doesn't have a name so it won't be in the


        


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