[PATCH v9] genemit.c (main): split insn-emit.c for compiling parallelly

[Jojo R <jiejie_rong@c-sky.com>]

gcc/ChangeLog:

	* genemit.c (main): Print 'split line'.
	* Makefile.in (insn-emit.c): Define split count and file

---
 gcc/Makefile.in |  35 +++++++++++-----
 gcc/genemit.c   | 104 +++++++++++++++++++++++++++++-------------------
 2 files changed, 90 insertions(+), 49 deletions(-)

diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 978a08f7b04..de846c0fcd4 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -1154,6 +1154,15 @@ export STRIP_FOR_TARGET
 export RANLIB_FOR_TARGET
 export libsubdir
 
+number_series0:=1 2 3 4 5 6 7 8 9
+number_series1:=0 $(number_series0)
+number_series2:=$(foreach i,$(number_series0),$(addprefix $(i),$(number_series1)))
+number_series3:=$(addprefix 0,$(number_series1)) $(number_series2)
+number_series4:=$(foreach i,$(number_series0),$(addprefix $(i),$(number_series3)))
+number_series5:=$(addprefix 0,$(number_series3)) $(number_series4)
+number_series6:=$(foreach i,$(number_series0),$(addprefix $(i),$(number_series5)))
+number_series:=$(number_series0) $(number_series2) $(number_series4) $(number_series6)
+
 FLAGS_TO_PASS = \
 	"ADA_CFLAGS=$(ADA_CFLAGS)" \
 	"BISON=$(BISON)" \
@@ -1259,6 +1268,18 @@ ANALYZER_OBJS = \
 # We put the *-match.o and insn-*.o files first so that a parallel make
 # will build them sooner, because they are large and otherwise tend to be
 # the last objects to finish building.
+
+# target overrides
+-include $(tmake_file)
+
+INSN-GENERATED-SPLIT-NUM ?= 0
+
+insn-generated-split-num = $(wordlist 1,$(shell expr $(INSN-GENERATED-SPLIT-NUM) + 1),$(number_series))
+
+insn-emit-split-c := $(foreach o, $(insn-generated-split-num), insn-emit$(o).c)
+insn-emit-split-obj = $(patsubst %.c,%.o, $(insn-emit-split-c))
+$(insn-emit-split-c): insn-emit.c
+
 OBJS = \
 	gimple-match.o \
 	generic-match.o \
@@ -1266,6 +1287,7 @@ OBJS = \
 	insn-automata.o \
 	insn-dfatab.o \
 	insn-emit.o \
+	$(insn-emit-split-obj) \
 	insn-extract.o \
 	insn-latencytab.o \
 	insn-modes.o \
@@ -2376,6 +2398,9 @@ $(simple_generated_c:insn-%.c=s-%): s-%: build/gen%$(build_exeext)
 	$(RUN_GEN) build/gen$*$(build_exeext) $(md_file) \
 	  $(filter insn-conditions.md,$^) > tmp-$*.c
 	$(SHELL) $(srcdir)/../move-if-change tmp-$*.c insn-$*.c
+	$*v=$$(echo $$(csplit insn-$*.c /parallel\ compilation/ -k -s {$(INSN-GENERATED-SPLIT-NUM)} -f insn-$* -b "%d.c" 2>&1));\
+	[ ! "$$$*v" ] || grep "match not found" <<< $$$*v
+	[ -s insn-$*0.c ] || (for i in $(insn-generated-split-num); do touch insn-$*$$i.c; done && echo "" > insn-$*.c)
 	$(STAMP) s-$*
 
 # gencheck doesn't read the machine description, and the file produced
@@ -4096,18 +4121,10 @@ $(patsubst %,%-subtargets,$(lang_checks)): check-%-subtargets:
 check_p_tool=$(firstword $(subst _, ,$*))
 check_p_count=$(check_$(check_p_tool)_parallelize)
 check_p_subno=$(word 2,$(subst _, ,$*))
-check_p_numbers0:=1 2 3 4 5 6 7 8 9
-check_p_numbers1:=0 $(check_p_numbers0)
-check_p_numbers2:=$(foreach i,$(check_p_numbers0),$(addprefix $(i),$(check_p_numbers1)))
-check_p_numbers3:=$(addprefix 0,$(check_p_numbers1)) $(check_p_numbers2)
-check_p_numbers4:=$(foreach i,$(check_p_numbers0),$(addprefix $(i),$(check_p_numbers3)))
-check_p_numbers5:=$(addprefix 0,$(check_p_numbers3)) $(check_p_numbers4)
-check_p_numbers6:=$(foreach i,$(check_p_numbers0),$(addprefix $(i),$(check_p_numbers5)))
-check_p_numbers:=$(check_p_numbers0) $(check_p_numbers2) $(check_p_numbers4) $(check_p_numbers6)
 check_p_subdir=$(subst _,,$*)
 check_p_subdirs=$(wordlist 1,$(check_p_count),$(wordlist 1, \
 		$(if $(GCC_TEST_PARALLEL_SLOTS),$(GCC_TEST_PARALLEL_SLOTS),128), \
-		$(check_p_numbers)))
+		$(number_series)))
 
 # For parallelized check-% targets, this decides whether parallelization
 # is desirable (if -jN is used).  If desirable, recursive make is run with
diff --git a/gcc/genemit.c b/gcc/genemit.c
index 84d07d388ee..54a0d909d9d 100644
--- a/gcc/genemit.c
+++ b/gcc/genemit.c
@@ -847,24 +847,13 @@ handle_overloaded_gen (overloaded_name *oname)
     }
 }
 
-int
-main (int argc, const char **argv)
-{
-  progname = "genemit";
-
-  if (!init_rtx_reader_args (argc, argv))
-    return (FATAL_EXIT_CODE);
-
-#define DEF_INTERNAL_OPTAB_FN(NAME, FLAGS, OPTAB, TYPE) \
-  nofail_optabs[OPTAB##_optab] = true;
-#include "internal-fn.def"
-
-  /* Assign sequential codes to all entries in the machine description
-     in parallel with the tables in insn-output.c.  */
-
-  printf ("/* Generated automatically by the program `genemit'\n\
-from the machine description file `md'.  */\n\n");
+/* Print include header.  */
 
+static void
+printf_include (void)
+{
+  printf ("/* Generated automatically by the program `genemit'\n"
+	  "from the machine description file `md'.  */\n\n");
   printf ("#define IN_TARGET_CODE 1\n");
   printf ("#include \"config.h\"\n");
   printf ("#include \"system.h\"\n");
@@ -900,35 +889,70 @@ from the machine description file `md'.  */\n\n");
   printf ("#include \"tm-constrs.h\"\n");
   printf ("#include \"ggc.h\"\n");
   printf ("#include \"target.h\"\n\n");
+}
 
-  /* Read the machine description.  */
+/* Generate the `gen_...' function from GET_CODE().  */
 
-  md_rtx_info info;
-  while (read_md_rtx (&info))
-    switch (GET_CODE (info.def))
-      {
-      case DEFINE_INSN:
-	gen_insn (&info);
-	break;
+static void
+gen_md_rtx (md_rtx_info *info)
+{
+  switch (GET_CODE (info->def))
+    {
+    case DEFINE_INSN:
+      gen_insn (info);
+      break;
 
-      case DEFINE_EXPAND:
-	printf ("/* %s:%d */\n", info.loc.filename, info.loc.lineno);
-	gen_expand (&info);
-	break;
+    case DEFINE_EXPAND:
+      printf ("/* %s:%d */\n", info->loc.filename, info->loc.lineno);
+      gen_expand (info);
+      break;
 
-      case DEFINE_SPLIT:
-	printf ("/* %s:%d */\n", info.loc.filename, info.loc.lineno);
-	gen_split (&info);
-	break;
+    case DEFINE_SPLIT:
+      printf ("/* %s:%d */\n", info->loc.filename, info->loc.lineno);
+      gen_split (info);
+      break;
 
-      case DEFINE_PEEPHOLE2:
-	printf ("/* %s:%d */\n", info.loc.filename, info.loc.lineno);
-	gen_split (&info);
-	break;
+    case DEFINE_PEEPHOLE2:
+      printf ("/* %s:%d */\n", info->loc.filename, info->loc.lineno);
+      gen_split (info);
+      break;
 
-      default:
-	break;
-      }
+    default:
+      break;
+    }
+}
+
+int
+main (int argc, const char **argv)
+{
+  progname = "genemit";
+
+  if (!init_rtx_reader_args (argc, argv))
+    return (FATAL_EXIT_CODE);
+
+#define DEF_INTERNAL_OPTAB_FN(NAME, FLAGS, OPTAB, TYPE) \
+  nofail_optabs[OPTAB##_optab] = true;
+#include "internal-fn.def"
+
+  /* Assign sequential codes to all entries in the machine description
+     in parallel with the tables in insn-output.c.  */
+
+  int read_count = 0;
+
+  /* Read the machine description.  */
+
+  md_rtx_info info;
+  while (read_md_rtx (&info))
+    {
+      if ((read_count++ % 10000) == 0)
+	{
+	  printf ("/* Split file into separate compilation units "
+		  "for parallel compilation %d */\n\n", read_count);
+	  printf_include();
+	}
+
+      gen_md_rtx (&info);
+    }
 
   /* Write out the routines to add CLOBBERs to a pattern and say whether they
      clobber a hard reg.  */
-- 
2.24.3 (Apple Git-128)