UpdateTestChecks: Don't check meta details in func definition w/--global none (#124205)

When --check-globals none, we skipped all the globals in check lines.
However, we are still checking the meta info in function defintion.

The generated checks are still sensitive to metadata changes.

This is to scrub the meta info and match them with {{.*}} instead.

Author: jsji

llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/global_none_meta.ll

@@ -0,0 +1,33 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
+; RUN: opt < %s -S | FileCheck %s
+
+; Function Attrs: convergent noinline nounwind
+declare hidden spir_func void @__cxx_global_var_init() #0
+
+; Function Attrs: convergent noinline nounwind
+define hidden spir_kernel void @_GLOBAL__sub_I_global_init.clcpp() #0 !kernel_arg_addr_space !4 !kernel_arg_access_qual !4 !kernel_arg_type !4 !kernel_arg_base_type !4 !kernel_arg_type_qual !4 {
+; CHECK-LABEL: define hidden spir_kernel void @_GLOBAL__sub_I_global_init.clcpp(
+; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {{.*}}{
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    call spir_func void @__cxx_global_var_init()
+; CHECK-NEXT:    ret void
+;
+entry:
+  call spir_func void @__cxx_global_var_init()
+  ret void
+}
+
+attributes #0 = { convergent noinline nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
+
+!llvm.module.flags = !{!0}
+!opencl.ocl.version = !{!1}
+!opencl.cxx.version = !{!2}
+!opencl.spir.version = !{!1}
+!llvm.ident = !{!3}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 2, i32 0}
+!2 = !{i32 1, i32 0}
+!3 = !{!"clang version 20.0.0git"}
+!4 = !{}
+

llvm/test/tools/UpdateTestChecks/update_test_checks/Inputs/global_none_meta.ll.expected

@@ -0,0 +1,33 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 5
+; RUN: opt < %s -S | FileCheck %s
+
+; Function Attrs: convergent noinline nounwind
+declare hidden spir_func void @__cxx_global_var_init() #0
+
+; Function Attrs: convergent noinline nounwind
+define hidden spir_kernel void @_GLOBAL__sub_I_global_init.clcpp() #0 !kernel_arg_addr_space !4 !kernel_arg_access_qual !4 !kernel_arg_type !4 !kernel_arg_base_type !4 !kernel_arg_type_qual !4 {
+; CHECK-LABEL: define hidden spir_kernel void @_GLOBAL__sub_I_global_init.clcpp(
+; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {{.*}}{
+; CHECK-NEXT:  [[ENTRY:.*:]]
+; CHECK-NEXT:    call spir_func void @__cxx_global_var_init()
+; CHECK-NEXT:    ret void
+;
+entry:
+  call spir_func void @__cxx_global_var_init()
+  ret void
+}
+
+attributes #0 = { convergent noinline nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
+
+!llvm.module.flags = !{!0}
+!opencl.ocl.version = !{!1}
+!opencl.cxx.version = !{!2}
+!opencl.spir.version = !{!1}
+!llvm.ident = !{!3}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 2, i32 0}
+!2 = !{i32 1, i32 0}
+!3 = !{!"clang version 20.0.0git"}
+!4 = !{}
+

llvm/test/tools/UpdateTestChecks/update_test_checks/global_none_meta.test

@@ -0,0 +1,3 @@
+## Basic test checking that update_test_checks.py --check-globals none works correctly
+# RUN: cp -f %S/Inputs/global_none_meta.ll %t.ll && %update_test_checks %t.ll --check-globals none
+# RUN: diff -u %t.ll %S/Inputs/global_none_meta.ll.expected

llvm/utils/UpdateTestChecks/common.py

@@ -983,6 +983,7 @@ def get_failed_prefixes(self):
 ##### Generator of LLVM IR CHECK lines
 
 SCRUB_IR_COMMENT_RE = re.compile(r"\s*;.*")
+SCRUB_IR_FUNC_META_RE = re.compile(r"((?:\!(?!dbg\b)[a-zA-Z_]\w*(?:\s+![0-9]+)?)\s*)+")
 
 # TODO: We should also derive check lines for global, debug, loop declarations, etc..
 
@@ -1087,13 +1088,15 @@ def __init__(
         nameless_values: List[NamelessValue],
         regexp_prefix,
         regexp_suffix,
+        no_meta_details=False,
     ):
         self._version = version
         self._mode = mode
         self._nameless_values = nameless_values
 
         self._regexp_prefix = regexp_prefix
         self._regexp_suffix = regexp_suffix
+        self._no_meta_details = no_meta_details
 
         self._regexp, _ = self._build_regexp(False, False)
         (
@@ -1147,6 +1150,9 @@ def get_regexp(self):
     def get_unstable_globals_regexp(self):
         return self._unstable_globals_regexp
 
+    def no_meta_details(self):
+        return self._no_meta_details
+
     # The entire match is group 0, the prefix has one group (=1), the entire
     # IR_VALUE_REGEXP_STRING is one group (=2), and then the nameless values start.
     FIRST_NAMELESS_GROUP_IN_MATCH = 3
@@ -1175,7 +1181,7 @@ def get_nameless_value_from_match(self, match) -> NamelessValue:
         return self.get_match_info(match)[1]
 
 
-def make_ir_generalizer(version):
+def make_ir_generalizer(version, no_meta_details):
     values = []
 
     if version >= 5:
@@ -1224,7 +1230,9 @@ def make_ir_generalizer(version):
     #        not (unstable_ids_only and nameless_value.match_literally)
     # ]
 
-    return GeneralizerInfo(version, GeneralizerInfo.MODE_IR, values, prefix, suffix)
+    return GeneralizerInfo(
+        version, GeneralizerInfo.MODE_IR, values, prefix, suffix, no_meta_details
+    )
 
 
 def make_asm_generalizer(version):
@@ -1726,6 +1734,7 @@ def generalize_check_lines(
     original_check_lines=None,
     *,
     unstable_globals_only=False,
+    no_meta_details=False,
 ):
     if unstable_globals_only:
         regexp = ginfo.get_unstable_globals_regexp()
@@ -1755,6 +1764,9 @@ def escape_braces(match_obj):
                     break
             # Ignore any comments, since the check lines will too.
             scrubbed_line = SCRUB_IR_COMMENT_RE.sub(r"", line)
+            # Ignore the metadata details if check global is none
+            if no_meta_details:
+                scrubbed_line = SCRUB_IR_FUNC_META_RE.sub(r"{{.*}}", scrubbed_line)
             lines[i] = scrubbed_line
 
     if not preserve_names:
@@ -1986,6 +1998,7 @@ def add_checks(
                     global_vars_seen,
                     preserve_names,
                     original_check_lines=[],
+                    no_meta_details=ginfo.no_meta_details(),
                 )[0]
             func_name_separator = func_dict[checkprefix][func_name].func_name_separator
             if "[[" in args_and_sig:

llvm/utils/update_cc_test_checks.py

@@ -368,7 +368,9 @@ def main():
 
         # Store only filechecked runlines.
         filecheck_run_list = [i for i in run_list if i[0]]
-        ginfo = common.make_ir_generalizer(version=ti.args.version)
+        ginfo = common.make_ir_generalizer(
+            ti.args.version, ti.args.check_globals == "none"
+        )
         builder = common.FunctionTestBuilder(
             run_list=filecheck_run_list,
             flags=ti.args,

llvm/utils/update_test_checks.py

@@ -153,7 +153,9 @@ def main():
             # now, we just ignore all but the last.
             prefix_list.append((check_prefixes, tool_cmd_args, preprocess_cmd))
 
-        ginfo = common.make_ir_generalizer(ti.args.version)
+        ginfo = common.make_ir_generalizer(
+            ti.args.version, ti.args.check_globals == "none"
+        )
         global_vars_seen_dict = {}
         builder = common.FunctionTestBuilder(
             run_list=prefix_list,