--- a/gcc/config/ia64/t-ia64	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/config/ia64/t-ia64	Fri Oct 27 22:46:09 2017 +0900
@@ -1,6 +1,4 @@
-# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-# 2010
-# Free Software Foundation, Inc.
+# Copyright (C) 2000-2017 Free Software Foundation, Inc.
 #
 # This file is part of GCC.
 #
@@ -18,34 +16,6 @@
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.
 
-LIB1ASMSRC    = ia64/lib1funcs.asm
-
-# We use different names for the DImode div/mod files so that they won't
-# conflict with libgcc2.c files.  We used to use __ia64 as a prefix, now
-# we use __ as the prefix.  Note that L_divdi3 in libgcc2.c actually defines
-# a TImode divide function, so there is no actual overlap here between
-# libgcc2.c and lib1funcs.asm.
-LIB1ASMFUNCS  = __divxf3 __divdf3 __divsf3 \
-	__divdi3 __moddi3 __udivdi3 __umoddi3 \
-	__divsi3 __modsi3 __udivsi3 __umodsi3 __save_stack_nonlocal \
-	__nonlocal_goto __restore_stack_nonlocal __trampoline \
-	_fixtfdi _fixunstfdi _floatditf
-
-# ??? Hack to get -P option used when compiling lib1funcs.asm, because Intel
-# assembler does not accept # line number as a comment.
-# ??? This breaks C++ pragma interface/implementation, which is used in the
-# C++ part of libgcc2, hence it had to be disabled.  Must find some other way
-# to support the Intel assembler.
-#LIBGCC2_DEBUG_CFLAGS = -g1 -P
-
-SHLIB_MAPFILES += $(srcdir)/config/ia64/libgcc-ia64.ver
-
-# Effectively disable the crtbegin/end rules using crtstuff.c
-T = disable
-
-LIB2ADDEH = $(srcdir)/config/ia64/unwind-ia64.c $(srcdir)/unwind-sjlj.c \
-  $(srcdir)/unwind-c.c
-
 ia64-c.o: $(srcdir)/config/ia64/ia64-c.c $(CONFIG_H) $(SYSTEM_H) \
     coretypes.h $(TM_H) $(TREE_H) $(CPPLIB_H) $(C_COMMON_H) $(C_PRAGMA_H)
 	$(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
@@ -54,4 +24,5 @@
 # genattrtab generates very long string literals.
 insn-attrtab.o-warn = -Wno-error
 
-ia64.o: debug.h $(PARAMS_H) sel-sched.h reload.h
+ia64.o: $(srcdir)/config/ia64/ia64.c debug.h $(PARAMS_H) sel-sched.h reload.h \
+	$(OPTS_H) dumpfile.h $(HASH_TABLE_H)