On Mon, Nov 6, 2017 at 10:20 PM, H.J. Lu <hongjiu...@intel.com> wrote: > When there is no need to make a copy of ix86_frame, we can use reference > of struct ix86_frame to avoid copy. > > Tested on x86-64. OK for trunk? > > > H.J. > -- > * config/i386/i386.c (ix86_can_use_return_insn_p): Use reference > of struct ix86_frame. > (ix86_initial_elimination_offset): Likewise. > (ix86_expand_split_stack_prologue): Likewise.
OK. Thanks, Uros. > --- > gcc/config/i386/i386.c | 9 +++------ > 1 file changed, 3 insertions(+), 6 deletions(-) > > diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c > index 0d5e2726a33..1e2709d8aec 100644 > --- a/gcc/config/i386/i386.c > +++ b/gcc/config/i386/i386.c > @@ -10486,8 +10486,6 @@ symbolic_reference_mentioned_p (rtx op) > bool > ix86_can_use_return_insn_p (void) > { > - struct ix86_frame frame; > - > if (ix86_function_naked (current_function_decl)) > return false; > > @@ -10502,7 +10500,7 @@ ix86_can_use_return_insn_p (void) > if (crtl->args.pops_args && crtl->args.size >= 32768) > return 0; > > - frame = cfun->machine->frame; > + struct ix86_frame &frame = cfun->machine->frame; > return (frame.stack_pointer_offset == UNITS_PER_WORD > && (frame.nregs + frame.nsseregs) == 0); > } > @@ -10996,7 +10994,7 @@ ix86_can_eliminate (const int from, const int to) > HOST_WIDE_INT > ix86_initial_elimination_offset (int from, int to) > { > - struct ix86_frame frame = cfun->machine->frame; > + struct ix86_frame &frame = cfun->machine->frame; > > if (from == ARG_POINTER_REGNUM && to == HARD_FRAME_POINTER_REGNUM) > return frame.hard_frame_pointer_offset; > @@ -14334,7 +14332,6 @@ ix86_split_stack_guard (void) > void > ix86_expand_split_stack_prologue (void) > { > - struct ix86_frame frame; > HOST_WIDE_INT allocate; > unsigned HOST_WIDE_INT args_size; > rtx_code_label *label; > @@ -14346,7 +14343,7 @@ ix86_expand_split_stack_prologue (void) > gcc_assert (flag_split_stack && reload_completed); > > ix86_finalize_stack_frame_flags (); > - frame = cfun->machine->frame; > + struct ix86_frame &frame = cfun->machine->frame; > allocate = frame.stack_pointer_offset - INCOMING_FRAME_SP_OFFSET; > > /* This is the label we will branch to if we have enough stack > -- > 2.13.6 >