Rename dwarf2/comp-unit.h

Simon pointed out that dwarf2/cu.h and dwarf2/comp-unit.h seemingly
mean the same thing.  He suggested renaming the latter to
comp-unit-head.h, which is what this patch does.

gdb/ChangeLog
2021-05-17  Tom Tromey  <tom@tromey.com>

	* dwarf2/read.h: Update include.
	* dwarf2/read.c: Update include.
	* dwarf2/line-header.c: Update include.
	* dwarf2/cu.h: Update include.
	* dwarf2/comp-unit-head.h: Rename from comp-unit.h.
	* dwarf2/comp-unit-head.c: Rename from comp-unit.c.
	* Makefile.in (COMMON_SFILES): Update.

gdb/ChangeLog

@@ -1,3 +1,13 @@
+2021-05-17  Tom Tromey  <tom@tromey.com>
+
+	* dwarf2/read.h: Update include.
+	* dwarf2/read.c: Update include.
+	* dwarf2/line-header.c: Update include.
+	* dwarf2/cu.h: Update include.
+	* dwarf2/comp-unit-head.h: Rename from comp-unit.h.
+	* dwarf2/comp-unit-head.c: Rename from comp-unit.c.
+	* Makefile.in (COMMON_SFILES): Update.
+
 2021-05-17  Tom Tromey  <tom@tromey.com>
 
 	* dwarf2/read.c (maybe_queue_comp_unit)

gdb/Makefile.in

@@ -1025,7 +1025,7 @@ COMMON_SFILES = \
 	dummy-frame.c \
 	dwarf2/abbrev.c \
 	dwarf2/attribute.c \
-	dwarf2/comp-unit.c \
+	dwarf2/comp-unit-head.c \
 	dwarf2/cu.c \
 	dwarf2/dwz.c \
 	dwarf2/expr.c \

gdb/dwarf2/comp-unit-head.c

@@ -25,13 +25,13 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
-#include "dwarf2/comp-unit.h"
+#include "dwarf2/comp-unit-head.h"
 #include "dwarf2/leb.h"
 #include "dwarf2/read.h"
 #include "dwarf2/section.h"
 #include "dwarf2/stringify.h"
 
-/* See comp-unit.h.  */
+/* See comp-unit-head.h.  */
 
 const gdb_byte *
 read_comp_unit_head (struct comp_unit_head *cu_header,
@@ -172,7 +172,7 @@ error_check_comp_unit_head (dwarf2_per_objfile *per_objfile,
 	   filename);
 }
 
-/* See comp-unit.h.  */
+/* See comp-unit-head.h.  */
 
 const gdb_byte *
 read_and_check_comp_unit_head (dwarf2_per_objfile *per_objfile,

gdb/dwarf2/cu.h

@@ -21,7 +21,7 @@
 #define GDB_DWARF2_CU_H
 
 #include "buildsym.h"
-#include "dwarf2/comp-unit.h"
+#include "dwarf2/comp-unit-head.h"
 #include "gdbsupport/gdb_optional.h"
 
 /* Type used for delaying computation of method physnames.

gdb/dwarf2/line-header.c

@@ -18,7 +18,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
-#include "dwarf2/comp-unit.h"
+#include "dwarf2/comp-unit-head.h"
 #include "dwarf2/leb.h"
 #include "dwarf2/line-header.h"
 #include "dwarf2/read.h"

gdb/dwarf2/read.c

@@ -32,7 +32,7 @@
 #include "dwarf2/read.h"
 #include "dwarf2/abbrev.h"
 #include "dwarf2/attribute.h"
-#include "dwarf2/comp-unit.h"
+#include "dwarf2/comp-unit-head.h"
 #include "dwarf2/cu.h"
 #include "dwarf2/index-cache.h"
 #include "dwarf2/index-common.h"

gdb/dwarf2/read.h

@@ -22,7 +22,7 @@
 
 #include <queue>
 #include <unordered_map>
-#include "dwarf2/comp-unit.h"
+#include "dwarf2/comp-unit-head.h"
 #include "dwarf2/index-cache.h"
 #include "dwarf2/section.h"
 #include "filename-seen-cache.h"