* Claudiu Zissulescu <claudiu.zissule...@synopsys.com> [2017-05-19 12:30:58 +0200]:
> gcc/ > 2016-12-12 Claudiu Zissulescu <claz...@synopsys.com> > > * config/arc/arc.c (arc_conditional_register_usage): Allow r30 to > be used by the reg-alloc. Looks good, thanks, Andrew > --- > gcc/config/arc/arc.c | 9 ++++++++- > gcc/config/arc/arc.h | 3 ++- > 2 files changed, 10 insertions(+), 2 deletions(-) > > diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c > index fd4bf2c..ff86f6c 100644 > --- a/gcc/config/arc/arc.c > +++ b/gcc/config/arc/arc.c > @@ -1551,7 +1551,14 @@ arc_conditional_register_usage (void) > /* For ARCv2 the core register set is changed. */ > strcpy (rname29, "ilink"); > strcpy (rname30, "r30"); > - fixed_regs[30] = call_used_regs[30] = 1; > + call_used_regs[30] = 1; > + fixed_regs[30] = 0; > + > + arc_regno_reg_class[30] = WRITABLE_CORE_REGS; > + SET_HARD_REG_BIT (reg_class_contents[WRITABLE_CORE_REGS], 30); > + SET_HARD_REG_BIT (reg_class_contents[CHEAP_CORE_REGS], 30); > + SET_HARD_REG_BIT (reg_class_contents[GENERAL_REGS], 30); > + SET_HARD_REG_BIT (reg_class_contents[MPY_WRITABLE_CORE_REGS], 30); > } > > if (TARGET_MUL64_SET) > diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h > index 0a4c745..fbc1195 100644 > --- a/gcc/config/arc/arc.h > +++ b/gcc/config/arc/arc.h > @@ -641,7 +641,8 @@ extern enum reg_class arc_regno_reg_class[]; > ((REGNO) < 29 || ((REGNO) == ARG_POINTER_REGNUM) || ((REGNO) == 63) > \ > || ((unsigned) reg_renumber[REGNO] < 29) \ > || ((unsigned) (REGNO) == (unsigned) arc_tp_regno) > \ > - || (fixed_regs[REGNO] == 0 && IN_RANGE (REGNO, 32, 59))) > + || (fixed_regs[REGNO] == 0 && IN_RANGE (REGNO, 32, 59)) \ > + || ((REGNO) == 30 && fixed_regs[REGNO] == 0)) > > #define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P(REGNO) > > -- > 1.9.1 >
