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Re: [06/32] Pass an ABI to choose_hard_reg_mode
- From: Jeff Law <law at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org, richard dot sandiford at arm dot com
- Date: Sun, 29 Sep 2019 15:00:37 -0600
- Subject: Re: [06/32] Pass an ABI to choose_hard_reg_mode
- References: <mptimpyzmf1.fsf@arm.com> <mptsgp2y7o4.fsf@arm.com>
On 9/11/19 1:06 PM, Richard Sandiford wrote:
> choose_hard_reg_mode previously took a boolean saying whether the
> mode needed to be call-preserved. This patch replaces it with an
> optional ABI pointer instead, so that the function can use that
> to test whether a value is call-saved.
>
> default_dwarf_frame_reg_mode uses eh_edge_abi because that's the
> ABI that matters for unwinding. Targets need to override the hook
> if they want something different.
>
>
> 2019-09-11 Richard Sandiford <richard.sandiford@arm.com>
>
> gcc/
> * rtl.h (predefined_function_abi): Declare.
> (choose_hard_reg_mode): Take a pointer to a predefined_function_abi
> instead of a boolean call_save flag.
> * config/gcn/gcn.c (gcn_hard_regno_caller_save_mode): Update call
> accordingly.
> * config/i386/i386.h (HARD_REGNO_CALLER_SAVE_MODE): Likewise.
> * config/ia64/ia64.h (HARD_REGNO_CALLER_SAVE_MODE): Likewise.
> * config/mips/mips.c (mips_hard_regno_caller_save_mode): Likewise.
> * config/msp430/msp430.h (HARD_REGNO_CALLER_SAVE_MODE): Likewise.
> * config/rs6000/rs6000.h (HARD_REGNO_CALLER_SAVE_MODE): Likewise.
> * config/sh/sh.c (sh_hard_regno_caller_save_mode): Likewise.
> * reginfo.c (init_reg_modes_target): Likewise.
> (choose_hard_reg_mode): Take a pointer to a predefined_function_abi
> instead of a boolean call_save flag.
> * targhooks.c: Include function-abi.h.
> (default_dwarf_frame_reg_mode): Update call to choose_hard_reg_mode,
> using eh_edge_abi to choose the mode.
>
OK
jeff