[AArch64][SME] Add intrinsics for vector groups ZERO (#93201)

According to the specification in
https://github.com/ARM-software/acle/pull/309 this adds the intrinsics:

  void svzero_za64_vg1x2(uint32_t slice)
    __arm_streaming __arm_inout("za");

  void svzero_za64_vg1x4(uint32_t slice)
    __arm_streaming __arm_inout("za");

  void svzero_za64_vg2x1(uint32_t slice)
    __arm_streaming __arm_inout("za");

  void svzero_za64_vg2x2(uint32_t slice)
    __arm_streaming __arm_inout("za");

  void svzero_za64_vg2x4(uint32_t slice)
    __arm_streaming __arm_inout("za");

  void svzero_za64_vg4x1(uint32_t slice)
    __arm_streaming __arm_inout("za");

  void svzero_za64_vg4x2(uint32_t slice)
    __arm_streaming __arm_inout("za");

  void svzero_za64_vg4x4(uint32_t slice)
    __arm_streaming __arm_inout("za");

5 files changed, 391 insertions, 9 deletions

diff --git a/clang/include/clang/Basic/arm_sme.td b/clang/include/clang/Basic/arm_sme.td
index 80e635e..564a58e 100644
--- a/clang/include/clang/Basic/arm_sme.td
+++ b/clang/include/clang/Basic/arm_sme.td
@@ -146,6 +146,25 @@ let TargetGuard = "sme" in {
                              [IsOverloadNone, IsStreamingCompatible, IsOutZA]>;
 }
 
+let TargetGuard = "sme2p1" in {
+  def SVZERO_ZA64_VG1x2 : SInst<"svzero_za64_vg1x2", "vm", "", MergeNone, "aarch64_sme_zero_za64_vg1x2",
+                            [IsOverloadNone, IsStreaming, IsInOutZA]>;
+  def SVZERO_ZA64_VG1x4 : SInst<"svzero_za64_vg1x4", "vm", "", MergeNone, "aarch64_sme_zero_za64_vg1x4",
+                            [IsOverloadNone, IsStreaming, IsInOutZA]>;
+  def SVZERO_ZA64_VG2x1 : SInst<"svzero_za64_vg2x1", "vm", "", MergeNone, "aarch64_sme_zero_za64_vg2x1",
+                            [IsOverloadNone, IsStreaming, IsInOutZA]>;
+  def SVZERO_ZA64_VG2x2 : SInst<"svzero_za64_vg2x2", "vm", "", MergeNone, "aarch64_sme_zero_za64_vg2x2",
+                            [IsOverloadNone, IsStreaming, IsInOutZA]>;
+  def SVZERO_ZA64_VG2x4 : SInst<"svzero_za64_vg2x4", "vm", "", MergeNone, "aarch64_sme_zero_za64_vg2x4",
+                            [IsOverloadNone, IsStreaming, IsInOutZA]>;
+  def SVZERO_ZA64_VG4x1 : SInst<"svzero_za64_vg4x1", "vm", "", MergeNone, "aarch64_sme_zero_za64_vg4x1",
+                            [IsOverloadNone, IsStreaming, IsInOutZA]>;
+  def SVZERO_ZA64_VG4x2 : SInst<"svzero_za64_vg4x2", "vm", "", MergeNone, "aarch64_sme_zero_za64_vg4x2",
+                            [IsOverloadNone, IsStreaming, IsInOutZA]>;
+  def SVZERO_ZA64_VG4x4 : SInst<"svzero_za64_vg4x4", "vm", "", MergeNone, "aarch64_sme_zero_za64_vg4x4",
+                            [IsOverloadNone, IsStreaming, IsInOutZA]>;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // SME - Counting elements in a streaming vector
 
diff --git a/clang/test/CodeGen/aarch64-sme2p1-intrinsics/acle_sme2p1_zero.c b/clang/test/CodeGen/aarch64-sme2p1-intrinsics/acle_sme2p1_zero.c
new file mode 100644
index 0000000..2ad2044
--- /dev/null
+++ b/clang/test/CodeGen/aarch64-sme2p1-intrinsics/acle_sme2p1_zero.c
@@ -0,0 +1,139 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 4
+// REQUIRES: aarch64-registered-target
+
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sme2p1 -disable-O0-optnone -Werror -Wall -emit-llvm -o - %s | opt -S -p mem2reg,instcombine,tailcallelim | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sme2p1 -disable-O0-optnone -Werror -Wall -emit-llvm -o - -x c++ %s | opt -S -p mem2reg,instcombine,tailcallelim | FileCheck %s -check-prefix=CPP-CHECK
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +sme2p1 -disable-O0-optnone -Werror -Wall -o /dev/null %s
+
+#include <arm_sme.h>
+
+#define SVE_ACLE_FUNC(A1,A2) A1##A2
+
+// CHECK-LABEL: define dso_local void @test_svzero_za64_vg1x2(
+// CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg1x2(i32 [[SLICE]])
+// CHECK-NEXT:    ret void
+//
+// CPP-CHECK-LABEL: define dso_local void @_Z22test_svzero_za64_vg1x2j(
+// CPP-CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0:[0-9]+]] {
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg1x2(i32 [[SLICE]])
+// CPP-CHECK-NEXT:    ret void
+//
+void test_svzero_za64_vg1x2(uint32_t slice) __arm_streaming __arm_inout("za")
+{
+   SVE_ACLE_FUNC(svzero_za64,_vg1x2)(slice);
+}
+
+// CHECK-LABEL: define dso_local void @test_svzero_za64_vg1x4(
+// CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg1x4(i32 [[SLICE]])
+// CHECK-NEXT:    ret void
+//
+// CPP-CHECK-LABEL: define dso_local void @_Z22test_svzero_za64_vg1x4j(
+// CPP-CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg1x4(i32 [[SLICE]])
+// CPP-CHECK-NEXT:    ret void
+//
+void test_svzero_za64_vg1x4(uint32_t slice) __arm_streaming __arm_inout("za"){
+   SVE_ACLE_FUNC(svzero_za64,_vg1x4)(slice);
+}
+
+// CHECK-LABEL: define dso_local void @test_svzero_za64_vg2x1(
+// CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg2x1(i32 [[SLICE]])
+// CHECK-NEXT:    ret void
+//
+// CPP-CHECK-LABEL: define dso_local void @_Z22test_svzero_za64_vg2x1j(
+// CPP-CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg2x1(i32 [[SLICE]])
+// CPP-CHECK-NEXT:    ret void
+//
+void test_svzero_za64_vg2x1(uint32_t slice) __arm_streaming __arm_inout("za"){
+   SVE_ACLE_FUNC(svzero_za64,_vg2x1)(slice);
+}
+
+// CHECK-LABEL: define dso_local void @test_svzero_za64_vg2x2(
+// CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg2x2(i32 [[SLICE]])
+// CHECK-NEXT:    ret void
+//
+// CPP-CHECK-LABEL: define dso_local void @_Z22test_svzero_za64_vg2x2j(
+// CPP-CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg2x2(i32 [[SLICE]])
+// CPP-CHECK-NEXT:    ret void
+//
+void test_svzero_za64_vg2x2(uint32_t slice) __arm_streaming __arm_inout("za"){
+   SVE_ACLE_FUNC(svzero_za64,_vg2x2)(slice);
+}
+
+// CHECK-LABEL: define dso_local void @test_svzero_za64_vg2x4(
+// CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg2x4(i32 [[SLICE]])
+// CHECK-NEXT:    ret void
+//
+// CPP-CHECK-LABEL: define dso_local void @_Z22test_svzero_za64_vg2x4j(
+// CPP-CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg2x4(i32 [[SLICE]])
+// CPP-CHECK-NEXT:    ret void
+//
+void test_svzero_za64_vg2x4(uint32_t slice)  __arm_streaming __arm_inout("za"){
+   SVE_ACLE_FUNC(svzero_za64,_vg2x4)(slice);
+}
+
+// CHECK-LABEL: define dso_local void @test_svzero_za64_vg4x1(
+// CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg4x1(i32 [[SLICE]])
+// CHECK-NEXT:    ret void
+//
+// CPP-CHECK-LABEL: define dso_local void @_Z22test_svzero_za64_vg4x1j(
+// CPP-CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg4x1(i32 [[SLICE]])
+// CPP-CHECK-NEXT:    ret void
+//
+void test_svzero_za64_vg4x1(uint32_t slice) __arm_streaming __arm_inout("za"){
+   SVE_ACLE_FUNC(svzero_za64,_vg4x1)(slice);
+}
+
+// CHECK-LABEL: define dso_local void @test_svzero_za64_vg4x2(
+// CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg4x2(i32 [[SLICE]])
+// CHECK-NEXT:    ret void
+//
+// CPP-CHECK-LABEL: define dso_local void @_Z22test_svzero_za64_vg4x2j(
+// CPP-CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg4x2(i32 [[SLICE]])
+// CPP-CHECK-NEXT:    ret void
+//
+void test_svzero_za64_vg4x2(uint32_t slice) __arm_streaming __arm_inout("za"){
+   SVE_ACLE_FUNC(svzero_za64,_vg4x2)(slice);
+}
+
+// CHECK-LABEL: define dso_local void @test_svzero_za64_vg4x4(
+// CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg4x4(i32 [[SLICE]])
+// CHECK-NEXT:    ret void
+//
+// CPP-CHECK-LABEL: define dso_local void @_Z22test_svzero_za64_vg4x4j(
+// CPP-CHECK-SAME: i32 noundef [[SLICE:%.*]]) #[[ATTR0]] {
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    tail call void @llvm.aarch64.sme.zero.za64.vg4x4(i32 [[SLICE]])
+// CPP-CHECK-NEXT:    ret void
+//
+void test_svzero_za64_vg4x4(uint32_t slice) __arm_streaming __arm_inout("za"){
+   SVE_ACLE_FUNC(svzero_za64,_vg4x4)(slice);
+}
diff --git a/llvm/include/llvm/IR/IntrinsicsAArch64.td b/llvm/include/llvm/IR/IntrinsicsAArch64.td
index f2028f8..9a71aaa 100644
--- a/llvm/include/llvm/IR/IntrinsicsAArch64.td
+++ b/llvm/include/llvm/IR/IntrinsicsAArch64.td
@@ -3361,6 +3361,12 @@ let TargetPrefix = "aarch64" in {
   def int_aarch64_sve_bfmlslt : SME2_BFMLS_Intrinsic;
   def int_aarch64_sve_bfmlslt_lane : SME2_BFMLS_Lane_Intrinsic;
 
+  // Multi-vector zeroing
+
+  foreach vg = ["vg1x2", "vg1x4", "vg2x1", "vg2x2", "vg2x4", "vg4x1", "vg4x2", "vg4x4"] in {
+    def int_aarch64_sme_zero_za64_ # vg : DefaultAttrsIntrinsic<[], [llvm_i32_ty],  [IntrNoMem, IntrHasSideEffects]>;
+  }
+  
   // Multi-vector signed saturating doubling multiply high
 
   def int_aarch64_sve_sqdmulh_single_vgx2 : SME2_VG2_Multi_Single_Intrinsic;
diff --git a/llvm/lib/Target/AArch64/SMEInstrFormats.td b/llvm/lib/Target/AArch64/SMEInstrFormats.td
index 50ee37b..b21b1fa 100644
--- a/llvm/lib/Target/AArch64/SMEInstrFormats.td
+++ b/llvm/lib/Target/AArch64/SMEInstrFormats.td
@@ -104,6 +104,13 @@ class sme2_move_to_tile_pseudo<string name, Operand tile_imm, Operand imm_ty, Re
   let usesCustomInserter = 1;
 }
 
+class sem2p1_zero_matrix_pseudo<string name, Operand index_ty, SMEMatrixTypeEnum za_flag>
+    : SMEPseudo2Instr<name, 0>,
+      Pseudo<(outs), (ins MatrixIndexGPR32Op8_11:$Rs, index_ty:$imm), []> {
+  let SMEMatrixType = za_flag;
+  let usesCustomInserter = 1;
+}
+
 //===----------------------------------------------------------------------===//
 // SME pattern match helpers.
 //===----------------------------------------------------------------------===//
@@ -189,6 +196,9 @@ class SME2_Tile_VG4_Multi_Pat<string name, SDPatternOperator intrinsic, Operand
     : Pat<(intrinsic tile_imm:$tile, (i32 (tileslice MatrixIndexGPR32Op12_15:$base, index_ty:$offset)), vt:$Zn1, vt:$Zn2, vt:$Zn3, vt:$Zn4),
           (!cast<Instruction>(name # _PSEUDO) $tile, $base, $offset, (REG_SEQUENCE ZPR4Mul4, vt:$Zn1, zsub0, vt:$Zn2, zsub1, vt:$Zn3, zsub2, vt:$Zn4, zsub3))>;
 
+class SME2_Zero_Matrix_Pat<string name, SDPatternOperator intrinsic, Operand offset_ty, ComplexPattern tileslice>
+    : Pat<(intrinsic (i32 (tileslice MatrixIndexGPR32Op8_11:$base, offset_ty:$offset))),
+    (!cast<Instruction>(name) $base, $offset)>; 
 //===----------------------------------------------------------------------===//
 // SME pattern match helpers.
 //===----------------------------------------------------------------------===//
@@ -4815,39 +4825,57 @@ class sme2p1_zero_matrix<bits<6> opc, Operand index_ty, string mnemonic,
 }
 
 multiclass sme2p1_zero_matrix<string mnemonic> {
-  def _VG2_Z : sme2p1_zero_matrix<{0b000,?,?,?}, sme_elm_idx0_7, mnemonic, "vgx2"> {
+  def _VG2_Z : sme2p1_zero_matrix<{0b000,?,?,?}, sme_elm_idx0_7, mnemonic, "vgx2">, SMEPseudo2Instr<NAME # _VG2_Z , 1> {
     bits<3> imm;
     let Inst{2-0} = imm;
   }
-  def _2Z : sme2p1_zero_matrix<{0b001,?,?,?}, uimm3s2range, mnemonic> {
+  def _2Z : sme2p1_zero_matrix<{0b001,?,?,?}, uimm3s2range, mnemonic>, SMEPseudo2Instr<NAME # _2Z, 1> {
     bits<3> imm;
     let Inst{2-0} = imm;
   }
-  def _VG2_2Z : sme2p1_zero_matrix<{0b0100,?,?}, uimm2s2range, mnemonic, "vgx2"> {
+  def _VG2_2Z : sme2p1_zero_matrix<{0b0100,?,?}, uimm2s2range, mnemonic, "vgx2">, SMEPseudo2Instr<NAME # _VG2_2Z, 1> {
     bits<2> imm;
     let Inst{1-0} = imm;
   }
-  def _VG4_2Z : sme2p1_zero_matrix<{0b0110,?,?}, uimm2s2range, mnemonic, "vgx4"> {
+  def _VG4_2Z : sme2p1_zero_matrix<{0b0110,?,?}, uimm2s2range, mnemonic, "vgx4">, SMEPseudo2Instr<NAME # _VG4_2Z, 1> {
     bits<2> imm;
     let Inst{1-0} = imm;
   }
-  def _VG4_Z : sme2p1_zero_matrix<{0b100,?,?,?}, sme_elm_idx0_7, mnemonic, "vgx4"> {
+  def _VG4_Z : sme2p1_zero_matrix<{0b100,?,?,?}, sme_elm_idx0_7, mnemonic, "vgx4">, SMEPseudo2Instr<NAME # _VG4_Z, 1> {
     bits<3> imm;
     let Inst{2-0} = imm;
   }
-  def _4Z : sme2p1_zero_matrix<{0b1010,?,?}, uimm2s4range, mnemonic> {
+  def _4Z : sme2p1_zero_matrix<{0b1010,?,?}, uimm2s4range, mnemonic>, SMEPseudo2Instr<NAME # _4Z, 1> {
     bits<2> imm;
     let Inst{1-0} = imm;
   }
-  def _VG2_4Z :sme2p1_zero_matrix<{0b11000,?}, uimm1s4range, mnemonic, "vgx2"> {
+  def _VG2_4Z : sme2p1_zero_matrix<{0b11000,?}, uimm1s4range, mnemonic, "vgx2">, SMEPseudo2Instr<NAME # _VG2_4Z, 1> {
     bits<1> imm;
     let Inst{0}   = imm;
   }
-  def _VG4_4Z :sme2p1_zero_matrix<{0b11100,?}, uimm1s4range, mnemonic, "vgx4"> {
+  def _VG4_4Z : sme2p1_zero_matrix<{0b11100,?}, uimm1s4range, mnemonic, "vgx4">, SMEPseudo2Instr<NAME # _VG4_4Z, 1> {
     bits<1> imm;
     let Inst{0}   = imm;
   }
-}
+
+  def NAME # _VG2_Z_PSEUDO : sem2p1_zero_matrix_pseudo<NAME # _VG2_Z, sme_elm_idx0_7, SMEMatrixArray>;
+  def NAME # _VG4_Z_PSEUDO : sem2p1_zero_matrix_pseudo<NAME # _VG4_Z, sme_elm_idx0_7, SMEMatrixArray>;
+  def NAME # _2Z_PSEUDO : sem2p1_zero_matrix_pseudo<NAME # _2Z, uimm2s2range, SMEMatrixArray>;
+  def NAME # _VG2_2Z_PSEUDO : sem2p1_zero_matrix_pseudo<NAME # _VG2_2Z, uimm1s2range, SMEMatrixArray>;
+  def NAME # _VG4_2Z_PSEUDO : sem2p1_zero_matrix_pseudo<NAME # _VG4_2Z, uimm1s2range, SMEMatrixArray>;
+  def NAME # _4Z_PSEUDO : sem2p1_zero_matrix_pseudo<NAME # _4Z, uimm1s4range, SMEMatrixArray>;
+  def NAME # _VG2_4Z_PSEUDO : sem2p1_zero_matrix_pseudo<NAME # _VG2_4Z, uimm0s4range, SMEMatrixArray>;
+  def NAME # _VG4_4Z_PSEUDO : sem2p1_zero_matrix_pseudo<NAME # _VG4_4Z, uimm0s4range, SMEMatrixArray>;
+
+  def : SME2_Zero_Matrix_Pat<NAME # _VG2_Z_PSEUDO, int_aarch64_sme_zero_za64_vg1x2, sme_elm_idx0_7, tileslice16>;
+  def : SME2_Zero_Matrix_Pat<NAME # _VG4_Z_PSEUDO, int_aarch64_sme_zero_za64_vg1x4, sme_elm_idx0_7, tileslice16>;
+  def : SME2_Zero_Matrix_Pat<NAME # _2Z_PSEUDO, int_aarch64_sme_zero_za64_vg2x1, uimm2s2range, tileslicerange2s2>;
+  def : SME2_Zero_Matrix_Pat<NAME # _VG2_2Z_PSEUDO, int_aarch64_sme_zero_za64_vg2x2, uimm1s2range, tileslicerange1s2>;
+  def : SME2_Zero_Matrix_Pat<NAME # _VG4_2Z_PSEUDO, int_aarch64_sme_zero_za64_vg2x4, uimm1s2range, tileslicerange1s2>;
+  def : SME2_Zero_Matrix_Pat<NAME # _4Z_PSEUDO, int_aarch64_sme_zero_za64_vg4x1, uimm1s4range, tileslicerange1s4>;
+  def : SME2_Zero_Matrix_Pat<NAME # _VG2_4Z_PSEUDO, int_aarch64_sme_zero_za64_vg4x2, uimm0s4range, tileslicerange0s4>;
+  def : SME2_Zero_Matrix_Pat<NAME # _VG4_4Z_PSEUDO, int_aarch64_sme_zero_za64_vg4x4, uimm0s4range, tileslicerange0s4>;
+} 
 
 //===----------------------------------------------------------------------===//
 // SME2.1 lookup table expand two non-contiguous registers
diff --git a/llvm/test/CodeGen/AArch64/sme2p1-intrinsics-zero.ll b/llvm/test/CodeGen/AArch64/sme2p1-intrinsics-zero.ll
new file mode 100644
index 0000000..ba77637
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/sme2p1-intrinsics-zero.ll
@@ -0,0 +1,190 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
+; RUN: llc -verify-machineinstrs < %s | FileCheck %s
+
+target triple = "aarch64-linux"
+
+define  void @test_svzero_za64_vg1x2(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg1x2:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0, vgx2]
+; CHECK-NEXT:    ret
+entry:
+  tail call void @llvm.aarch64.sme.zero.za64.vg1x2(i32 %slice)
+  ret void
+}
+
+define  void @test_svzero_za64_vg1x2_offset(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg1x2_offset:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 7, vgx2]
+; CHECK-NEXT:    ret
+entry:
+  %slice.max = add i32 %slice, 7
+  tail call void @llvm.aarch64.sme.zero.za64.vg1x2(i32 %slice.max)
+  ret void
+}
+
+define  void @test_svzero_za64_vg1x4(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg1x4:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0, vgx4]
+; CHECK-NEXT:    ret
+entry:
+  tail call void @llvm.aarch64.sme.zero.za64.vg1x4(i32 %slice)
+  ret void
+}
+
+define  void @test_svzero_za64_vg1x4_offset(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg1x4_offset:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 1, vgx4]
+; CHECK-NEXT:    ret
+entry:
+  %slice.min = add i32 %slice, 1
+  tail call void @llvm.aarch64.sme.zero.za64.vg1x4(i32 %slice.min)
+  ret void
+}
+
+define  void @test_svzero_za64_vg2x1(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg2x1:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0:1]
+; CHECK-NEXT:    ret
+entry:
+  tail call void @llvm.aarch64.sme.zero.za64.vg2x1(i32 %slice)
+  ret void
+}
+
+define  void @test_svzero_za64_vg2x1_offset(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg2x1_offset:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 6:7]
+; CHECK-NEXT:    ret
+entry:
+  %slice.max = add i32 %slice, 6
+  tail call void @llvm.aarch64.sme.zero.za64.vg2x1(i32 %slice.max)
+  ret void
+}
+
+define  void @test_svzero_za64_vg2x2(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg2x2:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0:1, vgx2]
+; CHECK-NEXT:    ret
+entry:
+  tail call void @llvm.aarch64.sme.zero.za64.vg2x2(i32 %slice)
+  ret void
+}
+
+define  void @test_svzero_za64_vg2x2_offset(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg2x2_offset:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 2:3, vgx2]
+; CHECK-NEXT:    ret
+entry:
+  %slice.max = add i32 %slice, 2
+  tail call void @llvm.aarch64.sme.zero.za64.vg2x2(i32 %slice.max)
+  ret void
+}
+
+define  void @test_svzero_za64_vg2x4(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg2x4:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0:1, vgx4]
+; CHECK-NEXT:    ret
+entry:
+  tail call void @llvm.aarch64.sme.zero.za64.vg2x4(i32 %slice)
+  ret void
+}
+
+define  void @test_svzero_za64_vg2x4_offset(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg2x4_offset:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    add w8, w0, #1
+; CHECK-NEXT:    zero za.d[w8, 0:1, vgx4]
+; CHECK-NEXT:    ret
+entry:
+  %slice.min = add i32 %slice, 1
+  tail call void @llvm.aarch64.sme.zero.za64.vg2x4(i32 %slice.min)
+  ret void
+}
+
+define  void @test_svzero_za64_vg4x1(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg4x1:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0:3]
+; CHECK-NEXT:    ret
+entry:
+  tail call void @llvm.aarch64.sme.zero.za64.vg4x1(i32 %slice)
+  ret void
+}
+
+define  void @test_svzero_za64_vg4x1_offset(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg4x1_offset:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 4:7]
+; CHECK-NEXT:    ret
+entry:
+  %slice.max = add i32 %slice, 4
+  tail call void @llvm.aarch64.sme.zero.za64.vg4x1(i32 %slice.max)
+  ret void
+}
+
+define  void @test_svzero_za64_vg4x2(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg4x2:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0:3, vgx2]
+; CHECK-NEXT:    ret
+entry:
+  tail call void @llvm.aarch64.sme.zero.za64.vg4x2(i32 %slice)
+  ret void
+}
+
+define  void @test_svzero_za64_vg4x2_offset(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg4x2_offset:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0:3, vgx2]
+; CHECK-NEXT:    ret
+entry:
+  %slice.max = add i32 %slice, 0
+  tail call void @llvm.aarch64.sme.zero.za64.vg4x2(i32 %slice.max)
+  ret void
+}
+
+define  void @test_svzero_za64_vg4x4(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg4x4:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    mov w8, w0
+; CHECK-NEXT:    zero za.d[w8, 0:3, vgx4]
+; CHECK-NEXT:    ret
+entry:
+  tail call void @llvm.aarch64.sme.zero.za64.vg4x4(i32 %slice)
+  ret void
+}
+
+define  void @test_svzero_za64_vg4x4_offset(i32  %slice)  #0 {
+; CHECK-LABEL: test_svzero_za64_vg4x4_offset:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    add w8, w0, #1
+; CHECK-NEXT:    zero za.d[w8, 0:3, vgx4]
+; CHECK-NEXT:    ret
+entry:
+  %slice.min = add i32 %slice, 1
+  tail call void @llvm.aarch64.sme.zero.za64.vg4x4(i32 %slice.min)
+  ret void
+}
+
+attributes #0 = { nounwind "target-features" = "+sme2p1"}