I forgot to say that I have submitted this patch.
> 在 2018年9月9日，下午12:20，瞿仙淼 <xianmiao...@c-sky.com> 写道： > > 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))] >
