[SveEmitter] Add builtins for svtbl2

[c-rhodes]

LGTM

clang/include/clang/Basic/arm_sve.td

 def SVWHILEWR_H : SInst<"svwhilewr[_{1}]", "Pcc", "sUsh", MergeNone, "aarch64_sve_whilewr_h", [IsOverloadWhileRW]>;
 def SVWHILEWR_S : SInst<"svwhilewr[_{1}]", "Pcc", "iUif", MergeNone, "aarch64_sve_whilewr_s", [IsOverloadWhileRW]>;
 def SVWHILEWR_D : SInst<"svwhilewr[_{1}]", "Pcc", "lUld", MergeNone, "aarch64_sve_whilewr_d", [IsOverloadWhileRW]>;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // SVE2 - Extended table lookup/permute
 let ArchGuard = "defined(__ARM_FEATURE_SVE2)" in {
+def SVTBL2 : SInst<"svtbl2[_{d}]", "d2u",  "csilUcUsUiUlhfd", MergeNone>;
 def SVTBX  : SInst<"svtbx[_{d}]",  "dddu", "csilUcUsUiUlhfd", MergeNone, "aarch64_sve_tbx">;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // SVE2 - Optional
 
 let ArchGuard = "defined(__ARM_FEATURE_SVE2_AES)" in {
 def SVAESD   : SInst<"svaesd[_{d}]",   "ddd", "Uc", MergeNone, "aarch64_sve_aesd", [IsOverloadNone]>;

clang/lib/CodeGen/CGBuiltin.cpp

Value *CodeGenFunction::EmitAArch64SVEBuiltinExpr(unsigned BuiltinID,
   case SVE::BI__builtin_sve_svlen_u64: {
     SVETypeFlags TF(Builtin->TypeModifier);
     auto VTy = cast<llvm::VectorType>(getSVEType(TF));
     auto NumEls = llvm::ConstantInt::get(Ty, VTy->getElementCount().Min);
 
     Function *F = CGM.getIntrinsic(Intrinsic::vscale, Ty);
     return Builder.CreateMul(NumEls, Builder.CreateCall(F));
   }
+
+  case SVE::BI__builtin_sve_svtbl2_u8:
+  case SVE::BI__builtin_sve_svtbl2_s8:
+  case SVE::BI__builtin_sve_svtbl2_u16:
+  case SVE::BI__builtin_sve_svtbl2_s16:
+  case SVE::BI__builtin_sve_svtbl2_u32:
+  case SVE::BI__builtin_sve_svtbl2_s32:
+  case SVE::BI__builtin_sve_svtbl2_u64:
+  case SVE::BI__builtin_sve_svtbl2_s64:
+  case SVE::BI__builtin_sve_svtbl2_f16:
+  case SVE::BI__builtin_sve_svtbl2_f32:
+  case SVE::BI__builtin_sve_svtbl2_f64: {
+    SVETypeFlags TF(Builtin->TypeModifier);
+    auto VTy = cast<llvm::VectorType>(getSVEType(TF));
+    auto TupleTy = llvm::VectorType::get(VTy->getElementType(),
+                                         VTy->getElementCount() * 2);
+    Function *FExtr =
+        CGM.getIntrinsic(Intrinsic::aarch64_sve_tuple_get, {VTy, TupleTy});
+    Value *V0 = Builder.CreateCall(FExtr, {Ops[0], Builder.getInt32(0)});
+    Value *V1 = Builder.CreateCall(FExtr, {Ops[0], Builder.getInt32(1)});
+    Function *F = CGM.getIntrinsic(Intrinsic::aarch64_sve_tbl2, VTy);
+    return Builder.CreateCall(F, {V0, V1, Ops[1]});
+  }
   }
 
   /// Should not happen
   return nullptr;
 }
 
 Value *CodeGenFunction::EmitAArch64BuiltinExpr(unsigned BuiltinID,
                                                const CallExpr *E,

clang/test/CodeGen/aarch64-sve2-intrinsics/acle_sve2_tbl2.c

+// RUN: %clang_cc1 -D__ARM_FEATURE_SVE -D__ARM_FEATURE_SVE2 -triple aarch64-none-linux-gnu -target-feature +sve2 -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -D__ARM_FEATURE_SVE -D__ARM_FEATURE_SVE2 -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve2 -fallow-half-arguments-and-returns -S -O1 -Werror -Wall -emit-llvm -o - %s | FileCheck %s
+// RUN: %clang_cc1 -D__ARM_FEATURE_SVE -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -fsyntax-only -verify -verify-ignore-unexpected=error %s
+// RUN: %clang_cc1 -D__ARM_FEATURE_SVE -DSVE_OVERLOADED_FORMS -triple aarch64-none-linux-gnu -target-feature +sve -fallow-half-arguments-and-returns -fsyntax-only -verify=overload -verify-ignore-unexpected=error %s
+
+#include <arm_sve.h>
+
+#ifdef SVE_OVERLOADED_FORMS
+// A simple used,unused... macro, long enough to represent any SVE builtin.
+#define SVE_ACLE_FUNC(A1,A2_UNUSED,A3,A4_UNUSED) A1##A3
+#else
+#define SVE_ACLE_FUNC(A1,A2,A3,A4) A1##A2##A3##A4
+#endif
+
+svint8_t test_svtbl2_s8(svint8x2_t data, svuint8_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_s8
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 16 x i8> @llvm.aarch64.sve.tuple.get.nxv16i8.nxv32i8(<vscale x 32 x i8> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 16 x i8> @llvm.aarch64.sve.tuple.get.nxv16i8.nxv32i8(<vscale x 32 x i8> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 16 x i8> @llvm.aarch64.sve.tbl2.nxv16i8(<vscale x 16 x i8> %[[V0]], <vscale x 16 x i8> %[[V1]], <vscale x 16 x i8> %indices)
+  // CHECK-NEXT: ret <vscale x 16 x i8> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_s8'}}
+  return SVE_ACLE_FUNC(svtbl2,_s8,,)(data, indices);
+}
+
+svint16_t test_svtbl2_s16(svint16x2_t data, svuint16_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_s16
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 8 x i16> @llvm.aarch64.sve.tuple.get.nxv8i16.nxv16i16(<vscale x 16 x i16> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 8 x i16> @llvm.aarch64.sve.tuple.get.nxv8i16.nxv16i16(<vscale x 16 x i16> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 8 x i16> @llvm.aarch64.sve.tbl2.nxv8i16(<vscale x 8 x i16> %[[V0]], <vscale x 8 x i16> %[[V1]], <vscale x 8 x i16> %indices)
+  // CHECK-NEXT: ret <vscale x 8 x i16> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_s16'}}
+  return SVE_ACLE_FUNC(svtbl2,_s16,,)(data, indices);
+}
+
+svint32_t test_svtbl2_s32(svint32x2_t data, svuint32_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_s32
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 4 x i32> @llvm.aarch64.sve.tuple.get.nxv4i32.nxv8i32(<vscale x 8 x i32> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 4 x i32> @llvm.aarch64.sve.tuple.get.nxv4i32.nxv8i32(<vscale x 8 x i32> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 4 x i32> @llvm.aarch64.sve.tbl2.nxv4i32(<vscale x 4 x i32> %[[V0]], <vscale x 4 x i32> %[[V1]], <vscale x 4 x i32> %indices)
+  // CHECK-NEXT: ret <vscale x 4 x i32> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_s32'}}
+  return SVE_ACLE_FUNC(svtbl2,_s32,,)(data, indices);
+}
+
+svint64_t test_svtbl2_s64(svint64x2_t data, svuint64_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_s64
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 2 x i64> @llvm.aarch64.sve.tuple.get.nxv2i64.nxv4i64(<vscale x 4 x i64> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 2 x i64> @llvm.aarch64.sve.tuple.get.nxv2i64.nxv4i64(<vscale x 4 x i64> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 2 x i64> @llvm.aarch64.sve.tbl2.nxv2i64(<vscale x 2 x i64> %[[V0]], <vscale x 2 x i64> %[[V1]], <vscale x 2 x i64> %indices)
+  // CHECK-NEXT: ret <vscale x 2 x i64> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_s64'}}
+  return SVE_ACLE_FUNC(svtbl2,_s64,,)(data, indices);
+}
+
+svuint8_t test_svtbl2_u8(svuint8x2_t data, svuint8_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_u8
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 16 x i8> @llvm.aarch64.sve.tuple.get.nxv16i8.nxv32i8(<vscale x 32 x i8> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 16 x i8> @llvm.aarch64.sve.tuple.get.nxv16i8.nxv32i8(<vscale x 32 x i8> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 16 x i8> @llvm.aarch64.sve.tbl2.nxv16i8(<vscale x 16 x i8> %[[V0]], <vscale x 16 x i8> %[[V1]], <vscale x 16 x i8> %indices)
+  // CHECK-NEXT: ret <vscale x 16 x i8> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_u8'}}
+  return SVE_ACLE_FUNC(svtbl2,_u8,,)(data, indices);
+}
+
+svuint16_t test_svtbl2_u16(svuint16x2_t data, svuint16_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_u16
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 8 x i16> @llvm.aarch64.sve.tuple.get.nxv8i16.nxv16i16(<vscale x 16 x i16> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 8 x i16> @llvm.aarch64.sve.tuple.get.nxv8i16.nxv16i16(<vscale x 16 x i16> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 8 x i16> @llvm.aarch64.sve.tbl2.nxv8i16(<vscale x 8 x i16> %[[V0]], <vscale x 8 x i16> %[[V1]], <vscale x 8 x i16> %indices)
+  // CHECK-NEXT: ret <vscale x 8 x i16> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_u16'}}
+  return SVE_ACLE_FUNC(svtbl2,_u16,,)(data, indices);
+}
+
+svuint32_t test_svtbl2_u32(svuint32x2_t data, svuint32_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_u32
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 4 x i32> @llvm.aarch64.sve.tuple.get.nxv4i32.nxv8i32(<vscale x 8 x i32> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 4 x i32> @llvm.aarch64.sve.tuple.get.nxv4i32.nxv8i32(<vscale x 8 x i32> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 4 x i32> @llvm.aarch64.sve.tbl2.nxv4i32(<vscale x 4 x i32> %[[V0]], <vscale x 4 x i32> %[[V1]], <vscale x 4 x i32> %indices)
+  // CHECK-NEXT: ret <vscale x 4 x i32> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_u32'}}
+  return SVE_ACLE_FUNC(svtbl2,_u32,,)(data, indices);
+}
+
+svuint64_t test_svtbl2_u64(svuint64x2_t data, svuint64_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_u64
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 2 x i64> @llvm.aarch64.sve.tuple.get.nxv2i64.nxv4i64(<vscale x 4 x i64> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 2 x i64> @llvm.aarch64.sve.tuple.get.nxv2i64.nxv4i64(<vscale x 4 x i64> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 2 x i64> @llvm.aarch64.sve.tbl2.nxv2i64(<vscale x 2 x i64> %[[V0]], <vscale x 2 x i64> %[[V1]], <vscale x 2 x i64> %indices)
+  // CHECK-NEXT: ret <vscale x 2 x i64> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_u64'}}
+  return SVE_ACLE_FUNC(svtbl2,_u64,,)(data, indices);
+}
+
+svfloat16_t test_svtbl2_f16(svfloat16x2_t data, svuint16_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_f16
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 8 x half> @llvm.aarch64.sve.tuple.get.nxv8f16.nxv16f16(<vscale x 16 x half> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 8 x half> @llvm.aarch64.sve.tuple.get.nxv8f16.nxv16f16(<vscale x 16 x half> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 8 x half> @llvm.aarch64.sve.tbl2.nxv8f16(<vscale x 8 x half> %[[V0]], <vscale x 8 x half> %[[V1]], <vscale x 8 x i16> %indices)
+  // CHECK-NEXT: ret <vscale x 8 x half> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_f16'}}
+  return SVE_ACLE_FUNC(svtbl2,_f16,,)(data, indices);
+}
+
+svfloat32_t test_svtbl2_f32(svfloat32x2_t data, svuint32_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_f32
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 4 x float> @llvm.aarch64.sve.tuple.get.nxv4f32.nxv8f32(<vscale x 8 x float> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 4 x float> @llvm.aarch64.sve.tuple.get.nxv4f32.nxv8f32(<vscale x 8 x float> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 4 x float> @llvm.aarch64.sve.tbl2.nxv4f32(<vscale x 4 x float> %[[V0]], <vscale x 4 x float> %[[V1]], <vscale x 4 x i32> %indices)
+  // CHECK-NEXT: ret <vscale x 4 x float> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_f32'}}
+  return SVE_ACLE_FUNC(svtbl2,_f32,,)(data, indices);
+}
+
+svfloat64_t test_svtbl2_f64(svfloat64x2_t data, svuint64_t indices)
+{
+  // CHECK-LABEL: test_svtbl2_f64
+  // CHECK-DAG: %[[V0:.*]] = call <vscale x 2 x double> @llvm.aarch64.sve.tuple.get.nxv2f64.nxv4f64(<vscale x 4 x double> %data, i32 0)
+  // CHECK-DAG: %[[V1:.*]] = call <vscale x 2 x double> @llvm.aarch64.sve.tuple.get.nxv2f64.nxv4f64(<vscale x 4 x double> %data, i32 1)
+  // CHECK: %[[INTRINSIC:.*]] = call <vscale x 2 x double> @llvm.aarch64.sve.tbl2.nxv2f64(<vscale x 2 x double> %[[V0]], <vscale x 2 x double> %[[V1]], <vscale x 2 x i64> %indices)
+  // CHECK-NEXT: ret <vscale x 2 x double> %[[INTRINSIC]]
+  // overload-warning@+2 {{implicit declaration of function 'svtbl2'}}
+  // expected-warning@+1 {{implicit declaration of function 'svtbl2_f64'}}
+  return SVE_ACLE_FUNC(svtbl2,_f64,,)(data, indices);
+}