[ARM,CDE] Implement CDE unpredicated Q-register intrinsics

[miyuki]

Summary

This patch implements the following intrinsics:

uint8x16_t __arm_vcx1q_u8 (int coproc, uint32_t imm);
T __arm_vcx1qa(int coproc, T acc, uint32_t imm);
T __arm_vcx2q(int coproc, T n, uint32_t imm);
uint8x16_t __arm_vcx2q_u8(int coproc, T n, uint32_t imm);
T __arm_vcx2qa(int coproc, T acc, U n, uint32_t imm);
T __arm_vcx3q(int coproc, T n, U m, uint32_t imm);
uint8x16_t __arm_vcx3q_u8(int coproc, T n, U m, uint32_t imm);
T __arm_vcx3qa(int coproc, T acc, U n, V m, uint32_t imm);

Most of them are polymorphic. Furthermore, some intrinsics are
polymorphic by 2 or 3 parameter types, such polymorphism is not
supported by the existing MVE/CDE tablegen backends, also we don't
really want to have a combinatorial explosion caused by 1000 different
combinations of 3 vector types. Because of this some intrinsics are
implemented as macros involving a cast of the polymorphic arguments to
uint8x16_t.

The IR intrinsics are even more restricted in terms of types: all MVE
vectors are cast to v16i8.

[miyuki]

Fixed formatting.

[MarkMurrayARM]

I like to use of the macros instead of a huge cross-product of types.

clang/include/clang/Basic/arm_cde.td

 class IB_ConstBits<int numBits> : IB_ConstRange<0, !add(!shl(1, numBits), -1)>;
 // numBits-wide immediate of type u32
 class CDEImmediateBits<int numBits> : Immediate<u32, IB_ConstBits<numBits>>;
 
 // LLVM IR CDE intrinsic
 class CDEIRInt<string name, list<Type> params = [], bit appendKind = 0>
       : IRIntBase<"arm_cde_" # name, params, appendKind>;
 
+// Class for generating function macros in arm_cde.h:
+// "#define <name>(<params>) <definition>"
+class FunctionMacro<list<string> params_, string definition_> {
+  list<string> params = params_;
+  string definition = definition_;
+}
+
 // Coprocessor immediate
 def imm_coproc : Immediate<sint, IB_ConstRange<0, 7>>;
 
 // Immediate integer parameters
 def imm_3b : CDEImmediateBits<3>;
 def imm_4b : CDEImmediateBits<4>;
 def imm_6b :  CDEImmediateBits<6>;
 def imm_7b :  CDEImmediateBits<7>;

 }
 
 defm vcx1: CDE_VCXFP_m<(args imm_11b:$imm), (args), (args), (?)>;
 defm vcx2: CDE_VCXFP_m<(args imm_6b:$imm), (args u32:$n), (args u64:$n),
                        (? (bitcast $n, FScalar))>;
 defm vcx3: CDE_VCXFP_m<(args imm_3b:$imm),
                        (args u32:$n, u32:$m), (args u64:$n, u64:$m),
                        (? (bitcast $n, FScalar), (bitcast $m, FScalar))>;
+
+// VCX* instructions operating on Q vector registers
+
+def v16u8 : VecOf<u8>;
+
+let pnt = PNT_None, params = [u8] in
+def vcx1q : CDEIntrinsic<Vector, (args imm_coproc:$cp, imm_12b:$imm),
+                         (CDEIRInt<"vcx1q"> $cp, $imm)>;
+
+let pnt = PNT_Type, params = T.All, polymorphicOnly = 1 in {
+  def vcx1qa :
+    CDEIntrinsic<Vector, (args imm_coproc:$cp, Vector:$acc, imm_12b:$imm),
+            (bitcast (CDEIRInt<"vcx1qa"> $cp, (bitcast $acc, v16u8), $imm),
+                     Vector)>;
+
+  def vcx2q :
+    CDEIntrinsic<Vector, (args imm_coproc:$cp, Vector:$n, imm_7b:$imm),
+            (bitcast (CDEIRInt<"vcx2q"> $cp, (bitcast $n, VecOf<u8>), $imm),
+                      Vector)>;
+  def vcx2q_u8 :
+    CDEIntrinsic<v16u8, (args imm_coproc:$cp, Vector:$n, imm_7b:$imm),
+            (CDEIRInt<"vcx2q"> $cp, (bitcast $n, VecOf<u8>), $imm)>;
+
+  def vcx2qa_impl :
+    CDEIntrinsic<Vector,
+            (args imm_coproc:$cp, Vector:$acc, v16u8:$n, imm_7b:$imm),
+            (bitcast (CDEIRInt<"vcx2qa"> $cp, (bitcast $acc, v16u8), $n, $imm),
+                     Vector)>;
+
+  def vcx3q_impl :
+    CDEIntrinsic<Vector,
+            (args imm_coproc:$cp, Vector:$n, v16u8:$m, imm_4b:$imm),
+            (bitcast (CDEIRInt<"vcx3q"> $cp, (bitcast $n, v16u8), $m, $imm),
+                     Vector)>;
+  def vcx3q_u8_impl :
+    CDEIntrinsic<v16u8,
+            (args imm_coproc:$cp, Vector:$n, v16u8:$m, imm_4b:$imm),
+            (CDEIRInt<"vcx3q"> $cp, (bitcast $n, v16u8), $m, $imm)>;
+  def vcx3qa_impl :
+    CDEIntrinsic<Vector,
+            (args imm_coproc:$cp, Vector:$acc, v16u8:$n, v16u8:$m, imm_4b:$imm),
+            (bitcast (CDEIRInt<"vcx3qa"> $cp, (bitcast $acc, v16u8), $n, $m,
+                                         $imm),
+                     Vector)>;
+}
+
+// Reinterpret intrinsics required to implement __arm_vcx*q with 2 or 3
+// polymorphic paramters.
+let params = [/* no u8 */ s8, u16, s16, u32, s32, u64, s64, f16, f32],
+    headerOnly = 1, polymorphicOnly = 1 in
+def vreinterpretq_u8 :
+    Intrinsic<v16u8, (args Vector:$x), (vreinterpret $x, v16u8)>;
+
+// We need vreinterpretq_u8_u8 to avoid doing smart tricks in the macros
+let params = [u8], polymorphicOnly = 1 in
+def vreinterpretq_u8_cde :
+    CDEIntrinsic<v16u8, (args Vector:$x), (id $x)>,
+    NameOverride<"vreinterpretq_u8">;
+
+
+def vcx2qa : FunctionMacro<
+  ["cp", "acc", "n", "imm"],
+  "__arm_vcx2qa_impl((cp), (acc), __arm_vreinterpretq_u8(n), (imm))">;
+
+def vcx3q : FunctionMacro<
+  ["cp", "n", "m", "imm"],
+  "__arm_vcx3q_impl((cp), (n), __arm_vreinterpretq_u8(m), (imm))">;
+def vcx3q_u8 : FunctionMacro<
+  ["cp", "n", "m", "imm"],
+  "__arm_vcx3q_u8_impl((cp), (n), __arm_vreinterpretq_u8(m), (imm))">;
+def vcx3qa : FunctionMacro<
+  ["cp", "acc", "n", "m", "imm"],
+  "__arm_vcx3qa_impl((cp), (acc), __arm_vreinterpretq_u8(n), "
+                     "__arm_vreinterpretq_u8(m), (imm))">;

clang/test/CodeGen/arm-cde-vec.c

+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
+// RUN: %clang_cc1 -triple thumbv8.1m.main-arm-none-eabi \
+// RUN:   -target-feature +cdecp0 -target-feature +cdecp1 \
+// RUN:   -target-feature +mve.fp \
+// RUN:   -mfloat-abi hard -O0 -disable-O0-optnone \
+// RUN:   -S -emit-llvm -o - %s | opt -S -mem2reg | FileCheck %s
+
+#include <arm_cde.h>
+
+// CHECK-LABEL: @test_vcx1q_u8(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = call <16 x i8> @llvm.arm.cde.vcx1q(i32 0, i32 1111)
+// CHECK-NEXT:    ret <16 x i8> [[TMP0]]
+//
+uint8x16_t test_vcx1q_u8(void) {
+  return __arm_vcx1q_u8(0, 1111);
+}
+
+// CHECK-LABEL: @test_vcx1qa_1(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = call <16 x i8> @llvm.arm.cde.vcx1qa(i32 1, <16 x i8> [[ACC:%.*]], i32 1112)
+// CHECK-NEXT:    ret <16 x i8> [[TMP0]]
+//
+uint8x16_t test_vcx1qa_1(uint8x16_t acc) {
+  return __arm_vcx1qa(1, acc, 1112);
+}
+
+// CHECK-LABEL: @test_vcx1qa_2(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = bitcast <4 x i32> [[ACC:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP1:%.*]] = call <16 x i8> @llvm.arm.cde.vcx1qa(i32 0, <16 x i8> [[TMP0]], i32 1113)
+// CHECK-NEXT:    [[TMP2:%.*]] = bitcast <16 x i8> [[TMP1]] to <4 x i32>
+// CHECK-NEXT:    ret <4 x i32> [[TMP2]]
+//
+int32x4_t test_vcx1qa_2(int32x4_t acc) {
+  return __arm_vcx1qa(0, acc, 1113);
+}
+
+// CHECK-LABEL: @test_vcx2q_u8(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = bitcast <8 x half> [[N:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP1:%.*]] = call <16 x i8> @llvm.arm.cde.vcx2q(i32 1, <16 x i8> [[TMP0]], i32 111)
+// CHECK-NEXT:    ret <16 x i8> [[TMP1]]
+//
+uint8x16_t test_vcx2q_u8(float16x8_t n) {
+  return __arm_vcx2q_u8(1, n, 111);
+}
+
+// CHECK-LABEL: @test_vcx2q(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = bitcast <4 x float> [[N:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP1:%.*]] = call <16 x i8> @llvm.arm.cde.vcx2q(i32 1, <16 x i8> [[TMP0]], i32 112)
+// CHECK-NEXT:    [[TMP2:%.*]] = bitcast <16 x i8> [[TMP1]] to <4 x float>
+// CHECK-NEXT:    ret <4 x float> [[TMP2]]
+//
+float32x4_t test_vcx2q(float32x4_t n) {
+  return __arm_vcx2q(1, n, 112);
+}
+
+// CHECK-LABEL: @test_vcx2qa(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = bitcast <4 x float> [[ACC:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP1:%.*]] = bitcast <2 x i64> [[N:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.arm.cde.vcx2qa(i32 0, <16 x i8> [[TMP0]], <16 x i8> [[TMP1]], i32 113)
+// CHECK-NEXT:    [[TMP3:%.*]] = bitcast <16 x i8> [[TMP2]] to <4 x float>
+// CHECK-NEXT:    ret <4 x float> [[TMP3]]
+//
+float32x4_t test_vcx2qa(float32x4_t acc, int64x2_t n) {
+  return __arm_vcx2qa(0, acc, n, 113);
+}
+
+// CHECK-LABEL: @test_vcx3q_u8(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = bitcast <8 x i16> [[N:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP1:%.*]] = bitcast <4 x i32> [[M:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.arm.cde.vcx3q(i32 0, <16 x i8> [[TMP0]], <16 x i8> [[TMP1]], i32 11)
+// CHECK-NEXT:    ret <16 x i8> [[TMP2]]
+//
+uint8x16_t test_vcx3q_u8(uint16x8_t n, int32x4_t m) {
+  return __arm_vcx3q_u8(0, n, m, 11);
+}
+
+// CHECK-LABEL: @test_vcx3q(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = bitcast <2 x i64> [[N:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP1:%.*]] = bitcast <4 x float> [[M:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.arm.cde.vcx3q(i32 1, <16 x i8> [[TMP0]], <16 x i8> [[TMP1]], i32 12)
+// CHECK-NEXT:    [[TMP3:%.*]] = bitcast <16 x i8> [[TMP2]] to <2 x i64>
+// CHECK-NEXT:    ret <2 x i64> [[TMP3]]
+//
+uint64x2_t test_vcx3q(uint64x2_t n, float32x4_t m) {
+  return __arm_vcx3q(1, n, m, 12);
+}
+
+// CHECK-LABEL: @test_vcx3qa(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = bitcast <8 x i16> [[N:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP1:%.*]] = bitcast <4 x float> [[M:%.*]] to <16 x i8>
+// CHECK-NEXT:    [[TMP2:%.*]] = call <16 x i8> @llvm.arm.cde.vcx3qa(i32 1, <16 x i8> [[ACC:%.*]], <16 x i8> [[TMP0]], <16 x i8> [[TMP1]], i32 13)
+// CHECK-NEXT:    ret <16 x i8> [[TMP2]]
+//
+int8x16_t test_vcx3qa(int8x16_t acc, uint16x8_t n, float32x4_t m) {
+  return __arm_vcx3qa(1, acc, n, m, 13);
+}

clang/test/Sema/arm-cde-immediates.c

void test_vcxfp_u64(uint64_t a, uint64_t n, uint64_t m) {
   __arm_vcx2da_u64(0, a, n, 64);  // expected-error {{argument value 64 is outside the valid range [0, 63]}}
 
   (void)__arm_vcx3d_u64(0, n, m, 0);
   __arm_vcx3d_u64(0, n, m, a);  // expected-error {{argument to '__arm_vcx3d_u64' must be a constant integer}}
   __arm_vcx3d_u64(0, n, m, 8);  // expected-error {{argument value 8 is outside the valid range [0, 7]}}
   __arm_vcx3da_u64(0, a, n, m, a);  // expected-error {{argument to '__arm_vcx3da_u64' must be a constant integer}}
   __arm_vcx3da_u64(0, a, n, m, 8);  // expected-error {{argument value 8 is outside the valid range [0, 7]}}
 }
+
+void test_vcxq(uint32_t a, uint8x16_t acc, float16x8_t n, int64x2_t m) {
+  (void)__arm_vcx1q_u8(0, 0);
+  __arm_vcx1q_u8(0, a); // expected-error {{argument to '__arm_vcx1q_u8' must be a constant integer}}
+  __arm_vcx1q_u8(0, 4096); // expected-error {{argument value 4096 is outside the valid range [0, 4095]}}
+  __arm_vcx1qa(0, acc, a); // expected-error {{argument to '__arm_vcx1qa' must be a constant integer}}
+  __arm_vcx1qa(0, acc, 4096); // expected-error {{argument value 4096 is outside the valid range [0, 4095]}}
+
+  (void)__arm_vcx2q_u8(0, n, 0);
+  __arm_vcx2q_u8(0, n, a); // expected-error {{argument to '__arm_vcx2q_u8' must be a constant integer}}
+  __arm_vcx2q_u8(0, n, 128); // expected-error {{argument value 128 is outside the valid range [0, 127]}}
+  __arm_vcx2q(0, n, a); // expected-error {{argument to '__arm_vcx2q' must be a constant integer}}
+  __arm_vcx2q(0, n, 128); // expected-error {{argument value 128 is outside the valid range [0, 127]}}
+  __arm_vcx2qa(0, n, acc, a); // expected-error {{argument to '__arm_vcx2qa_impl' must be a constant integer}}
+  __arm_vcx2qa(0, n, acc, 128); // expected-error {{argument value 128 is outside the valid range [0, 127]}}
+
+  (void)__arm_vcx3q_u8(0, n, m, 0);
+  __arm_vcx3q_u8(0, n, m, a); // expected-error {{argument to '__arm_vcx3q_u8_impl' must be a constant integer}}
+  __arm_vcx3q_u8(0, n, m, 16); // expected-error {{argument value 16 is outside the valid range [0, 15]}}
+  __arm_vcx3q(0, n, m, a); // expected-error {{argument to '__arm_vcx3q_impl' must be a constant integer}}
+  __arm_vcx3q(0, n, m, 16); // expected-error {{argument value 16 is outside the valid range [0, 15]}}
+  __arm_vcx3qa(0, n, m, acc, a); // expected-error {{argument to '__arm_vcx3qa_impl' must be a constant integer}}
+  __arm_vcx3qa(0, n, m, acc, 16); // expected-error {{argument value 16 is outside the valid range [0, 15]}}
+}

clang/utils/TableGen/MveEmitter.cpp

void MveEmitter::EmitBuiltinSema(raw_ostream &OS) {
   for (const auto &kv : Checks) {
     for (StringRef Name : kv.second)
       OS << "case ARM::BI__builtin_arm_mve_" << Name << ":\n";
     OS << "  return " << kv.first;
   }
 }
 
 // -----------------------------------------------------------------------------
+// Class that describes an ACLE intrinsic implemented as a macro.
+//
+// This class is used when the intrinsic is polymorphic in 2 or 3 types, but we
+// want to avoid a combinatorial explosion by reinterpreting the arguments to
+// fixed types.
+
+class FunctionMacro {
+  std::vector<StringRef> Params;
+  StringRef Definition;
+public:
+  FunctionMacro(const Record &R);
+
+  const std::vector<StringRef> &getParams() const { return Params; }
+  StringRef getDefinition() const { return Definition; }
+};
+
+FunctionMacro::FunctionMacro(const Record &R) {
+  Params = R.getValueAsListOfStrings("params");
+  Definition = R.getValueAsString("definition");
+}
+
+// -----------------------------------------------------------------------------
 // The class used for generating arm_cde.h and related Clang bits
 //
 
 class CdeEmitter : public EmitterBase {
+  std::map<StringRef, FunctionMacro> FunctionMacros;
 public:
-  CdeEmitter(RecordKeeper &Records) : EmitterBase(Records){};
+  CdeEmitter(RecordKeeper &Records);
   void EmitHeader(raw_ostream &OS) override;
   void EmitBuiltinDef(raw_ostream &OS) override;
   void EmitBuiltinSema(raw_ostream &OS) override;
 };
 
+CdeEmitter::CdeEmitter(RecordKeeper &Records) : EmitterBase(Records) {
+  for (Record *R : Records.getAllDerivedDefinitions("FunctionMacro"))
+    FunctionMacros.emplace(R->getName(), FunctionMacro(*R));
+}
+
 void CdeEmitter::EmitHeader(raw_ostream &OS) {
   // Accumulate pieces of the header file that will be enabled under various
   // different combinations of #ifdef. The index into parts[] is one of the
   // following:
   constexpr unsigned None = 0;
   constexpr unsigned MVE = 1;
   constexpr unsigned MVEFloat = 2;
 
for (bool Polymorphic : {false, true}) {
       OS << "static __inline__ __attribute__(("
          << (Polymorphic ? "__overloadable__, " : "")
          << "__clang_arm_builtin_alias(__builtin_arm_" << Int.builtinExtension()
          << "_" << Int.fullName() << ")))\n"
          << RetTypeName << FunctionName << "(" << ArgTypesString << ");\n";
     }
   }
 
+  for (const auto &kv : FunctionMacros) {
+    StringRef Name = kv.first;
+    const FunctionMacro &FM = kv.second;
+
+    raw_ostream &OS = parts[MVE];
+    OS << "#define "
+       << "__arm_" << Name << "(" << join(FM.getParams(), ", ") << ") "
+       << FM.getDefinition() << "\n";
+  }
+
   for (auto &part : parts)
     part << "\n";
 
   // Now we've finished accumulating bits and pieces into the parts[] array.
   // Put it all together to write the final output file.
 
   OS << "/*===---- arm_cde.h - ARM CDE intrinsics "
         "-----------------------------------===\n"

llvm/include/llvm/IR/IntrinsicsARM.td

!listconcat([llvm_i32_ty /* coproc */,  LLVMMatchType<0> /* acc */],
                 args, [llvm_i32_ty /* imm */]),
     [IntrNoMem, ImmArg<0>, ImmArg<!add(!size(args), 2)>]>;
 }
 
 defm int_arm_cde_vcx1 : CDEVCXIntrinsics<[]>;
 defm int_arm_cde_vcx2 : CDEVCXIntrinsics<[LLVMMatchType<0>]>;
 defm int_arm_cde_vcx3 : CDEVCXIntrinsics<[LLVMMatchType<0>, LLVMMatchType<0>]>;
 
+multiclass CDEVCXVecIntrinsics<list<LLVMType> args> {
+  def "" : Intrinsic<
+    [llvm_v16i8_ty],
+    !listconcat([llvm_i32_ty /* coproc */], args, [llvm_i32_ty /* imm */]),
+    [IntrNoMem, ImmArg<0>, ImmArg<!add(!size(args), 1)>]>;
+  def a : Intrinsic<
+    [llvm_v16i8_ty],
+    !listconcat([llvm_i32_ty /* coproc */, llvm_v16i8_ty /* acc */],
+                args, [llvm_i32_ty /* imm */]),
+    [IntrNoMem, ImmArg<0>, ImmArg<!add(!size(args), 2)>]>;
+}
+
+defm int_arm_cde_vcx1q : CDEVCXVecIntrinsics<[]>;
+defm int_arm_cde_vcx2q : CDEVCXVecIntrinsics<[llvm_v16i8_ty]>;
+defm int_arm_cde_vcx3q : CDEVCXVecIntrinsics<[llvm_v16i8_ty, llvm_v16i8_ty]>;
+
 } // end TargetPrefix

llvm/lib/Target/ARM/ARMInstrCDE.td

let Predicates = [HasCDE, HasFPRegs] in {
   def : Pat<(f64 (int_arm_cde_vcx3 timm:$coproc, (f64 DPR:$n), (f64 DPR:$m),
                                    timm:$imm)),
             (f64 (CDE_VCX3_fpdp p_imm:$coproc, DPR:$n, DPR:$m, imm_3b:$imm))>;
   def : Pat<(f64 (int_arm_cde_vcx3a timm:$coproc, (f64 DPR:$acc), (f64 DPR:$n),
                                     (f64 DPR:$m), timm:$imm)),
             (f64 (CDE_VCX3A_fpdp p_imm:$coproc, DPR:$acc, DPR:$n, DPR:$m,
                                  imm_3b:$imm))>;
 }
+
+let Predicates = [HasCDE, HasMVEInt] in {
+  def : Pat<(v16i8 (int_arm_cde_vcx1q timm:$coproc, timm:$imm)),
+            (v16i8 (CDE_VCX1_vec p_imm:$coproc, imm_12b:$imm))>;
+  def : Pat<(v16i8 (int_arm_cde_vcx1qa timm:$coproc, (v16i8 MQPR:$acc),
+                                       timm:$imm)),
+            (v16i8 (CDE_VCX1A_vec p_imm:$coproc, MQPR:$acc, imm_12b:$imm))>;
+
+  def : Pat<(v16i8 (int_arm_cde_vcx2q timm:$coproc, (v16i8 MQPR:$n), timm:$imm)),
+            (v16i8 (CDE_VCX2_vec p_imm:$coproc, MQPR:$n, imm_7b:$imm))>;
+  def : Pat<(v16i8 (int_arm_cde_vcx2qa timm:$coproc, (v16i8 MQPR:$acc),
+                                       (v16i8 MQPR:$n), timm:$imm)),
+            (v16i8 (CDE_VCX2A_vec p_imm:$coproc, MQPR:$acc, MQPR:$n,
+                                  imm_7b:$imm))>;
+
+  def : Pat<(v16i8 (int_arm_cde_vcx3q timm:$coproc, (v16i8 MQPR:$n),
+                                      (v16i8 MQPR:$m), timm:$imm)),
+            (v16i8 (CDE_VCX3_vec p_imm:$coproc, MQPR:$n, MQPR:$m,
+                                 imm_4b:$imm))>;
+  def : Pat<(v16i8 (int_arm_cde_vcx3qa timm:$coproc, (v16i8 MQPR:$acc),
+                                       (v16i8 MQPR:$n), (v16i8 MQPR:$m),
+                                       timm:$imm)),
+            (v16i8 (CDE_VCX3A_vec p_imm:$coproc, MQPR:$acc, MQPR:$n, MQPR:$m,
+                                  imm_4b:$imm))>;
+}

llvm/test/CodeGen/Thumb2/cde-vec.ll

+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=thumbv8.1m.main -mattr=+cdecp0 -mattr=+cdecp1 -mattr=+mve -verify-machineinstrs -o - %s | FileCheck %s
+
+declare <16 x i8> @llvm.arm.cde.vcx1q(i32 immarg, i32 immarg)
+declare <16 x i8> @llvm.arm.cde.vcx1qa(i32 immarg, <16 x i8>, i32 immarg)
+declare <16 x i8> @llvm.arm.cde.vcx2q(i32 immarg, <16 x i8>, i32 immarg)
+declare <16 x i8> @llvm.arm.cde.vcx2qa(i32 immarg, <16 x i8>, <16 x i8>, i32 immarg)
+declare <16 x i8> @llvm.arm.cde.vcx3q(i32 immarg, <16 x i8>, <16 x i8>, i32 immarg)
+declare <16 x i8> @llvm.arm.cde.vcx3qa(i32 immarg, <16 x i8>, <16 x i8>, <16 x i8>, i32 immarg)
+
+define arm_aapcs_vfpcc <16 x i8> @test_vcx1q_u8() {
+; CHECK-LABEL: test_vcx1q_u8:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx1 p0, q0, #1111
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = call <16 x i8> @llvm.arm.cde.vcx1q(i32 0, i32 1111)
+  ret <16 x i8> %0
+}
+
+define arm_aapcs_vfpcc <16 x i8> @test_vcx1qa_1(<16 x i8> %acc) {
+; CHECK-LABEL: test_vcx1qa_1:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx1a p1, q0, #1112
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = call <16 x i8> @llvm.arm.cde.vcx1qa(i32 1, <16 x i8> %acc, i32 1112)
+  ret <16 x i8> %0
+}
+
+define arm_aapcs_vfpcc <4 x i32> @test_vcx1qa_2(<4 x i32> %acc) {
+; CHECK-LABEL: test_vcx1qa_2:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx1a p0, q0, #1113
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = bitcast <4 x i32> %acc to <16 x i8>
+  %1 = call <16 x i8> @llvm.arm.cde.vcx1qa(i32 0, <16 x i8> %0, i32 1113)
+  %2 = bitcast <16 x i8> %1 to <4 x i32>
+  ret <4 x i32> %2
+}
+
+define arm_aapcs_vfpcc <16 x i8> @test_vcx2q_u8(<8 x half> %n) {
+; CHECK-LABEL: test_vcx2q_u8:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx2 p1, q0, q0, #111
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = bitcast <8 x half> %n to <16 x i8>
+  %1 = call <16 x i8> @llvm.arm.cde.vcx2q(i32 1, <16 x i8> %0, i32 111)
+  ret <16 x i8> %1
+}
+
+define arm_aapcs_vfpcc <4 x float> @test_vcx2q(<4 x float> %n) {
+; CHECK-LABEL: test_vcx2q:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx2 p1, q0, q0, #112
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = bitcast <4 x float> %n to <16 x i8>
+  %1 = call <16 x i8> @llvm.arm.cde.vcx2q(i32 1, <16 x i8> %0, i32 112)
+  %2 = bitcast <16 x i8> %1 to <4 x float>
+  ret <4 x float> %2
+}
+
+define arm_aapcs_vfpcc <4 x float> @test_vcx2qa(<4 x float> %acc, <2 x i64> %n) {
+; CHECK-LABEL: test_vcx2qa:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx2a p0, q0, q1, #113
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = bitcast <4 x float> %acc to <16 x i8>
+  %1 = bitcast <2 x i64> %n to <16 x i8>
+  %2 = call <16 x i8> @llvm.arm.cde.vcx2qa(i32 0, <16 x i8> %0, <16 x i8> %1, i32 113)
+  %3 = bitcast <16 x i8> %2 to <4 x float>
+  ret <4 x float> %3
+}
+
+define arm_aapcs_vfpcc <16 x i8> @test_vcx3q_u8(<8 x i16> %n, <4 x i32> %m) {
+; CHECK-LABEL: test_vcx3q_u8:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx3 p0, q0, q0, q1, #11
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = bitcast <8 x i16> %n to <16 x i8>
+  %1 = bitcast <4 x i32> %m to <16 x i8>
+  %2 = call <16 x i8> @llvm.arm.cde.vcx3q(i32 0, <16 x i8> %0, <16 x i8> %1, i32 11)
+  ret <16 x i8> %2
+}
+
+define arm_aapcs_vfpcc <2 x i64> @test_vcx3q(<2 x i64> %n, <4 x float> %m) {
+; CHECK-LABEL: test_vcx3q:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx3 p1, q0, q0, q1, #12
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = bitcast <2 x i64> %n to <16 x i8>
+  %1 = bitcast <4 x float> %m to <16 x i8>
+  %2 = call <16 x i8> @llvm.arm.cde.vcx3q(i32 1, <16 x i8> %0, <16 x i8> %1, i32 12)
+  %3 = bitcast <16 x i8> %2 to <2 x i64>
+  ret <2 x i64> %3
+}
+
+define arm_aapcs_vfpcc <16 x i8> @test_vcx3qa(<16 x i8> %acc, <8 x i16> %n, <4 x float> %m) {
+; CHECK-LABEL: test_vcx3qa:
+; CHECK:       @ %bb.0: @ %entry
+; CHECK-NEXT:    vcx3a p1, q0, q1, q2, #13
+; CHECK-NEXT:    bx lr
+entry:
+  %0 = bitcast <8 x i16> %n to <16 x i8>
+  %1 = bitcast <4 x float> %m to <16 x i8>
+  %2 = call <16 x i8> @llvm.arm.cde.vcx3qa(i32 1, <16 x i8> %acc, <16 x i8> %0, <16 x i8> %1, i32 13)
+  ret <16 x i8> %2
+}