Hi, Gentle ping:
https://gcc.gnu.org/pipermail/gcc-patches/2024-June/653381.html BR, Kewen on 2024/6/3 11:01, Kewen Lin wrote: > This is to add new port specific hook implementation > m68k_c_mode_for_floating_type, remove macro > LONG_DOUBLE_TYPE_SIZE and add new macro > LONG_DOUBLE_TYPE_MODE which some subtarget can redefine. > > gcc/ChangeLog: > > * config/m68k/m68k.cc (m68k_c_mode_for_floating_type): New function. > (TARGET_C_MODE_FOR_FLOATING_TYPE): New macro. > * config/m68k/m68k.h (LONG_DOUBLE_TYPE_SIZE): Remove. > (LONG_DOUBLE_TYPE_MODE): New macro. > * config/m68k/netbsd-elf.h (LONG_DOUBLE_TYPE_SIZE): Remove. > (LONG_DOUBLE_TYPE_MODE): New macro. > --- > gcc/config/m68k/m68k.cc | 16 ++++++++++++++++ > gcc/config/m68k/m68k.h | 4 ++-- > gcc/config/m68k/netbsd-elf.h | 4 ++-- > 3 files changed, 20 insertions(+), 4 deletions(-) > > diff --git a/gcc/config/m68k/m68k.cc b/gcc/config/m68k/m68k.cc > index b1c9238949f..79ba4d5343c 100644 > --- a/gcc/config/m68k/m68k.cc > +++ b/gcc/config/m68k/m68k.cc > @@ -198,6 +198,7 @@ static machine_mode m68k_promote_function_mode > (const_tree, machine_mode, > int *, const_tree, int); > static void m68k_asm_final_postscan_insn (FILE *, rtx_insn *insn, rtx [], > int); > static HARD_REG_SET m68k_zero_call_used_regs (HARD_REG_SET); > +static machine_mode m68k_c_mode_for_floating_type (enum tree_index); > > /* Initialize the GCC target structure. */ > > @@ -365,6 +366,9 @@ static HARD_REG_SET m68k_zero_call_used_regs > (HARD_REG_SET); > #undef TARGET_ZERO_CALL_USED_REGS > #define TARGET_ZERO_CALL_USED_REGS m68k_zero_call_used_regs > > +#undef TARGET_C_MODE_FOR_FLOATING_TYPE > +#define TARGET_C_MODE_FOR_FLOATING_TYPE m68k_c_mode_for_floating_type > + > TARGET_GNU_ATTRIBUTES (m68k_attribute_table, > { > /* { name, min_len, max_len, decl_req, type_req, fn_type_req, > @@ -7212,4 +7216,16 @@ m68k_zero_call_used_regs (HARD_REG_SET > need_zeroed_hardregs) > return need_zeroed_hardregs; > } > > +/* Implement TARGET_C_MODE_FOR_FLOATING_TYPE. Return XFmode or DFmode > + for TI_LONG_DOUBLE_TYPE which is for long double type, go with the > + default one for the others. */ > + > +static machine_mode > +m68k_c_mode_for_floating_type (enum tree_index ti) > +{ > + if (ti == TI_LONG_DOUBLE_TYPE) > + return LONG_DOUBLE_TYPE_MODE; > + return default_mode_for_floating_type (ti); > +} > + > #include "gt-m68k.h" > diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h > index 1aa89f1789b..0d571997143 100644 > --- a/gcc/config/m68k/m68k.h > +++ b/gcc/config/m68k/m68k.h > @@ -278,8 +278,8 @@ along with GCC; see the file COPYING3. If not see > /* "long double" is the same as "double" on ColdFire and fido > targets. */ > > -#define LONG_DOUBLE_TYPE_SIZE \ > - ((TARGET_COLDFIRE || TARGET_FIDOA) ? 64 : 80) > +#define LONG_DOUBLE_TYPE_MODE \ > + ((TARGET_COLDFIRE || TARGET_FIDOA) ? DFmode : XFmode) > > #define BITS_BIG_ENDIAN 1 > #define BYTES_BIG_ENDIAN 1 > diff --git a/gcc/config/m68k/netbsd-elf.h b/gcc/config/m68k/netbsd-elf.h > index 5239f09b4cc..6fc5ad1a0a6 100644 > --- a/gcc/config/m68k/netbsd-elf.h > +++ b/gcc/config/m68k/netbsd-elf.h > @@ -36,8 +36,8 @@ along with GCC; see the file COPYING3. If not see > while (0) > > /* Don't try using XFmode on the 68010. */ > -#undef LONG_DOUBLE_TYPE_SIZE > -#define LONG_DOUBLE_TYPE_SIZE (TARGET_68020 ? 80 : 64) > +#undef LONG_DOUBLE_TYPE_MODE > +#define LONG_DOUBLE_TYPE_MODE (TARGET_68020 ? XFmode : DFmode) > > #undef SUBTARGET_EXTRA_SPECS > #define SUBTARGET_EXTRA_SPECS \
