[PATCH, csky] add an earlyclobber for two patterns

[瞿仙淼]

Hello!

        Two patterns were missing an earlyclobber.


Index: gcc/ChangeLog
===================================================================
--- gcc/ChangeLog       (revision 264177)
+++ gcc/ChangeLog       (revision 264176)
@@ -1,8 +1,3 @@
-2018-09-09  Xianmiao Qu  <xianmiao...@c-sky.com>
-
-       * config/csky/csky.md (*cskyv2_adddi3, *cskyv2_subdi3): Add
-       earlyclobber.
-
 2018-09-08  John David Anglin  <dang...@gcc.gnu.org>
 
        PR rtl-optimization/85458
Index: gcc/config/csky/csky.md
===================================================================
--- gcc/config/csky/csky.md     (revision 264177)
+++ gcc/config/csky/csky.md     (revision 264176)
@@ -919,7 +919,7 @@
    clear the carry bit before adding the lo words.  */
 
 (define_insn_and_split "*cskyv2_adddi3"
-  [(set (match_operand:DI         0 "register_operand" "=&b,&r")
+  [(set (match_operand:DI         0 "register_operand" "=b,&r")
        (plus:DI (match_operand:DI 1 "register_operand" "%0,r")
                 (match_operand:DI 2 "register_operand" "b, r")))
    (clobber (reg:CC CSKY_CC_REGNUM))]
@@ -1117,7 +1117,7 @@
    set the C bit before subtracting the lo words.  */
 
 (define_insn_and_split "*cskyv2_subdi3"
-  [(set (match_operand:DI          0 "register_operand" "=&b,&r")
+  [(set (match_operand:DI          0 "register_operand" "=b,&r")
        (minus:DI (match_operand:DI 1 "register_operand" "0, r")
                  (match_operand:DI 2 "register_operand" "b, r")))
    (clobber (reg:CC CSKY_CC_REGNUM))]