mklog: support define_insn_and_split format

contrib/ChangeLog:

	* mklog.py: Parse also define_insn_and_split and similar
	directives in .md files.
	* test_mklog.py: Test.

contrib/mklog.py

@@ -49,10 +49,11 @@ macro_regex = re.compile(r'#\s*(define|undef)\s+([a-zA-Z0-9_]+)')
 super_macro_regex = re.compile(r'^DEF[A-Z0-9_]+\s*\(([a-zA-Z0-9_]+)')
 fn_regex = re.compile(r'([a-zA-Z_][^()\s]*)\s*\([^*]')
 template_and_param_regex = re.compile(r'<[^<>]*>')
+md_def_regex = re.compile(r'\(define.*\s+"(.*)"')
 bugzilla_url = 'https://gcc.gnu.org/bugzilla/rest.cgi/bug?id=%s&' \
                'include_fields=summary'
 
-function_extensions = {'.c', '.cpp', '.C', '.cc', '.h', '.inc', '.def'}
+function_extensions = {'.c', '.cpp', '.C', '.cc', '.h', '.inc', '.def', '.md'}
 
 help_message = """\
 Generate ChangeLog template for PATCH.
@@ -200,6 +201,15 @@ def generate_changelog(data, no_functions=False, fill_pr_titles=False):
                             for line in hunk:
                                 m = identifier_regex.match(line.value)
                                 if line.is_added or line.is_removed:
+                                    # special-case definition in .md files
+                                    m2 = md_def_regex.match(line.value)
+                                    if extension == '.md' and m2:
+                                        fn = m2.group(1)
+                                        if fn not in functions:
+                                            functions.append(fn)
+                                            last_fn = None
+                                            success = True
+
                                     if not line.value.strip():
                                         continue
                                     modified_visited = True

contrib/test_mklog.py

@@ -399,6 +399,44 @@ gcc/ChangeLog:
 
 '''
 
+PATCH9 = '''\
+diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
+index 2a260c1cfbd..7f03fc491c3 100644
+--- a/gcc/config/i386/sse.md
++++ b/gcc/config/i386/sse.md
+@@ -17611,6 +17611,23 @@ (define_insn "avx2_<code>v16qiv16hi2<mask_name>"
+    (set_attr "prefix" "maybe_evex")
+    (set_attr "mode" "OI")])
+ 
++(define_insn_and_split "*avx2_zero_extendv16qiv16hi2_1"
++  [(set (match_operand:V32QI 0 "register_operand" "=v")
++	(vec_select:V32QI
++	  (vec_concat:V64QI
++	    (match_operand:V32QI 1 "nonimmediate_operand" "vm")
++	    (match_operand:V32QI 2 "const0_operand" "C"))
++	  (match_parallel 3 "pmovzx_parallel"
++	    [(match_operand 4 "const_int_operand" "n")])))]
++  "TARGET_AVX2"
++  "#"
++  "&& reload_completed"
++  [(set (match_dup 0) (zero_extend:V16HI (match_dup 1)))]
++{
++  operands[0] = lowpart_subreg (V16HImode, operands[0], V32QImode);
++  operands[1] = lowpart_subreg (V16QImode, operands[1], V32QImode);
++})
++
+ (define_expand "<insn>v16qiv16hi2"
+   [(set (match_operand:V16HI 0 "register_operand")
+ 	(any_extend:V16HI
+'''
+
+EXPECTED9 = '''\
+gcc/ChangeLog:
+
+	* config/i386/sse.md (*avx2_zero_extendv16qiv16hi2_1):
+
+'''
+
 class TestMklog(unittest.TestCase):
     def test_macro_definition(self):
         changelog = generate_changelog(PATCH1)
@@ -437,3 +475,7 @@ class TestMklog(unittest.TestCase):
     def test_renaming(self):
         changelog = generate_changelog(PATCH8)
         assert changelog == EXPECTED8
+
+    def test_define_macro_parsing(self):
+        changelog = generate_changelog(PATCH9)
+        assert changelog == EXPECTED9