chore: import upstream snapshot with attribution

tests/python/codegen/test_target_codegen_aarch64.py

@@ -0,0 +1,647 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+"""
+Codegen tests for AArch64
+"""
+
+import re
+
+import pytest
+
+import tvm
+from tvm.script import ir as I
+from tvm.script import tirx as T
+from tvm.target.codegen import llvm_version_major
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_mul(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = A[v_i] * B[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"mul\tz[0-9].[shdb],( p[0-9]/[m],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert len(matches) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_add(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = A[v_i] + B[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"add\tz[0-9].[shdb],( p[0-9]/[m],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert len(matches) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_sub(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = A[v_i] - B[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"sub\tz[0-9].[shdb],( p[0-9]/[m],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert len(matches) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_muladd(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle, var_D: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            D = T.match_buffer(var_D, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("D"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i], C[v_i])
+                    T.writes(D[v_i])
+                    D[v_i] = A[v_i] * B[v_i] + C[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        # Group the mad|mla alternation: a top-level alternation would let a bare
+        # "mad" match anywhere in the assembly (e.g. inside scalar "fmadd").
+        r"(?:mad|mla)\tz[0-9].[shdb],( p[0-9]/[m],)? z[0-9].[shdb], z[0-9].[shdb]",
+        assembly,
+    )
+
+    if llvm_version_major() >= 18 and dtype in ("float", "float16"):
+        # Newer LLVM cost models (observed with LLVM 20) prefer a fixed-width
+        # NEON main loop over a scalable SVE loop for floating-point fmuladd
+        # on generic AArch64 targets, so also accept the NEON form.
+        loads += re.findall(r"ld[rp]\tq[0-9]", assembly)
+        matches += re.findall(r"fml[as]\tv[0-9]+\.[0-9]+[hs]", assembly)
+
+    assert len(loads) > 1
+    assert len(matches) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_max(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = T.max(A[v_i], B[v_i])
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    compare = re.findall(
+        r"cmgt\tp[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+    select = re.findall("sel\tz[0-9].[shdb], p[0-9], z[0-9].[shdb], z[0-9].[shdb]", assembly)
+    max_instr = re.findall(
+        r"max\tz[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert (len(compare) > 1 and len(select) == len(compare)) or len(max_instr) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_min(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = T.min(A[v_i], B[v_i])
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    compare = re.findall(
+        r"cmgt\tp[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+    select = re.findall("sel\tz[0-9].[shdb], p[0-9], z[0-9].[shdb], z[0-9].[shdb]", assembly)
+    min_instr = re.findall(
+        r"min\tz[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert (len(compare) > 1 and len(select) == len(compare)) or len(min_instr) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_div(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = tvm.tirx.div(A[v_i], B[v_i])
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"div\tz[0-9].[shdb],( p[0-9]/[m],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert len(matches) >= 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype", ["uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"]
+)
+def test_mod(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = T.floormod(A[v_i], B[v_i])
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"mls\tz[0-9].[shdb],( p[0-9]/[m],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert len(matches) > 0
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_eq(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), "bool")
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = A[v_i] == B[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"cm(p)?eq\tp[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    # The number of SVE compares depends on the LLVM cost model: LLVM <= 17
+    # interleaves the scalable loop by two, while LLVM 20 emits a fixed-width
+    # NEON main loop with a single predicated SVE epilogue.
+    assert len(matches) > 0
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype",
+    ["float", "float16", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"],
+)
+def test_neq(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), "bool")
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = A[v_i] != B[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"cm(p)?(gt|ne)\tp[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    # The number of SVE compares depends on the LLVM cost model: LLVM <= 17
+    # interleaves the scalable loop by two, while LLVM 20 emits a fixed-width
+    # NEON main loop with a single predicated SVE epilogue.
+    assert len(matches) > 0
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype", ["uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"]
+)
+def test_or(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = A[v_i] | B[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"orr\tz[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert len(matches) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype", ["uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"]
+)
+def test_and(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i], B[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = A[v_i] & B[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"and\tz[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert len(matches) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.parametrize(
+    "dtype", ["uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"]
+)
+def test_not(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = ~A[v_i]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+    matches = re.findall(
+        r"eor\tz[0-9].[shdb],( p[0-9]/[zm],)? z[0-9].[shdb], z[0-9].[shdb]", assembly
+    )
+
+    assert len(loads) > 1
+    assert len(matches) > 1
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 15, reason="Test requires an LLVM version of at least 15 to target SVE"
+)
+@pytest.mark.xfail(
+    reason="Awaiting llvm support for gathered loads",
+    strict=True,
+)
+@pytest.mark.parametrize(
+    "dtype", ["uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64"]
+)
+def test_memcpy(dtype):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": ["+sve"]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_B: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,), dtype=dtype)
+            B = T.match_buffer(var_B, (m,), "int32")
+            C = T.match_buffer(var_C, (m,), dtype=dtype)
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(B[v_i], A[B[v_i]])
+                    T.writes(C[v_i])
+                    C[v_i] = A[B[v_i]]
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    assembly = f.inspect_source("asm")
+    loads = re.findall("ld1[whdb]	{ z", assembly)
+
+    assert len(loads) > 0
+
+
+@pytest.mark.skipif(
+    llvm_version_major() < 13,
+    reason="Function attribute vscale_range() is not supported in earlier versions of LLVM",
+)
+@pytest.mark.parametrize(
+    "mattr,expect_attr",
+    [
+        ("+neon", False),
+        ("+sve", True),
+        # Since LLVM 19, SVE/SVE2 are optional extensions of Armv9.0-A, so
+        # "+v9a" no longer implies "+sve" and no vscale_range() is added:
+        # https://releases.llvm.org/19.1.0/docs/ReleaseNotes.html#changes-to-the-aarch64-backend
+        ("+v9a", llvm_version_major() < 19),
+        ("+sme", True),
+    ],
+)
+def test_vscale_range_function_attribute(mattr, expect_attr):
+    target = {"kind": "llvm", "mtriple": "aarch64-linux-gnu", "mattr": [mattr]}
+
+    @I.ir_module(s_tir=True)
+    class Module:
+        @T.prim_func(s_tir=True)
+        def main(var_A: T.handle, var_C: T.handle):
+            T.func_attr({"tirx.noalias": True})
+            m = T.int32()
+            A = T.match_buffer(var_A, (m,))
+            C = T.match_buffer(var_C, (m,))
+            for i in range(m):
+                with T.sblock("C"):
+                    v_i = T.axis.spatial(m, i)
+                    T.reads(A[v_i])
+                    T.writes(C[v_i])
+                    C[v_i] = A[v_i] + T.float32(1)
+
+    with tvm.target.Target(target):
+        f = tvm.tirx.build(Module)
+
+    # Check if the vscale_range() attribute exists
+    ll = f.inspect_source("ll")
+    attr = re.findall(r".*vscale_range\(\d+,\d+\)*.", ll)
+
+    if expect_attr:
+        assert len(attr) > 0, "Function attribute vscale_range() was not found in generated LLVM IR"
+    else:
+        assert len(attr) == 0, (
+            "Unexpected function attribute vscale_range() was found in generated LLVM IR"
+        )
+
+
+if __name__ == "__main__":
+    tvm.testing.main()