On Tue, 2025-02-11 at 20:49 +0800, Lulu Cheng wrote:
> Split the implementation of the function loongarch_cpu_cpp_builtins
> into two parts:
> 1. Macro definitions that do not change (only considering 64-bit
> architecture)
> 2. Macro definitions that change with different compilation options.
>
> gcc/ChangeLog:
>
> * config/loongarch/loongarch-c.cc (builtin_undef): New macro.
> (loongarch_cpu_cpp_builtins): Split to
> loongarch_update_cpp_builtins
> and loongarch_define_unconditional_macros.
> (loongarch_def_or_undef): New functions.
> (loongarch_define_unconditional_macros): Likewise.
> (loongarch_update_cpp_builtins): Likewise.
>
> Change-Id: Ifae73ffa2a07a595ed2a7f6ab7b82d8f51328a2a
> ---
> gcc/config/loongarch/loongarch-c.cc | 109 +++++++++++++++++----------
> -
> 1 file changed, 66 insertions(+), 43 deletions(-)
>
> diff --git a/gcc/config/loongarch/loongarch-c.cc
> b/gcc/config/loongarch/loongarch-c.cc
> index 5d8c02e094b..9fe911325ab 100644
> --- a/gcc/config/loongarch/loongarch-c.cc
> +++ b/gcc/config/loongarch/loongarch-c.cc
> @@ -31,13 +31,21 @@ along with GCC; see the file COPYING3. If not see
>
> #define preprocessing_asm_p() (cpp_get_options (pfile)->lang ==
> CLK_ASM)
> #define builtin_define(TXT) cpp_define (pfile, TXT)
> +#define builtin_undef(TXT) cpp_undef (pfile, TXT)
> #define builtin_assert(TXT) cpp_assert (pfile, TXT)
>
> -void
> -loongarch_cpu_cpp_builtins (cpp_reader *pfile)
> +static void
> +loongarch_def_or_undef (bool def_p, const char *macro, cpp_reader
> *pfile)
> +{
> + if (def_p)
> + cpp_define (pfile, macro);
> + else
> + cpp_undef (pfile, macro);
> +}
> +
> +static void
> +loongarch_define_unconditional_macros (cpp_reader *pfile)
> {
> - builtin_assert ("machine=loongarch");
> - builtin_assert ("cpu=loongarch");
> builtin_define ("__loongarch__");
>
> builtin_define_with_value ("__loongarch_arch",
> @@ -66,45 +74,6 @@ loongarch_cpu_cpp_builtins (cpp_reader *pfile)
> builtin_define ("__loongarch_lp64");
> }
>
> - /* These defines reflect the ABI in use, not whether the
> - FPU is directly accessible. */
> - if (TARGET_DOUBLE_FLOAT_ABI)
> - builtin_define ("__loongarch_double_float=1");
> - else if (TARGET_SINGLE_FLOAT_ABI)
> - builtin_define ("__loongarch_single_float=1");
> -
> - if (TARGET_DOUBLE_FLOAT_ABI || TARGET_SINGLE_FLOAT_ABI)
> - builtin_define ("__loongarch_hard_float=1");
> - else
> - builtin_define ("__loongarch_soft_float=1");
> -
> -
> - /* ISA Extensions. */
> - if (TARGET_DOUBLE_FLOAT)
> - builtin_define ("__loongarch_frlen=64");
> - else if (TARGET_SINGLE_FLOAT)
> - builtin_define ("__loongarch_frlen=32");
> - else
> - builtin_define ("__loongarch_frlen=0");
> -
> - if (TARGET_HARD_FLOAT && ISA_HAS_FRECIPE)
> - builtin_define ("__loongarch_frecipe");
> -
> - if (ISA_HAS_LSX)
> - {
> - builtin_define ("__loongarch_simd");
> - builtin_define ("__loongarch_sx");
> -
> - if (!ISA_HAS_LASX)
> - builtin_define ("__loongarch_simd_width=128");
> - }
> -
> - if (ISA_HAS_LASX)
> - {
> - builtin_define ("__loongarch_asx");
> - builtin_define ("__loongarch_simd_width=256");
> - }
> -
> /* ISA evolution features */
> int max_v_major = 1, max_v_minor = 0;
I guess the handling for la_evo_macro_name macros (like
__loongarch_div32) and
__loongarch_version_major/__loongarch_version_minor should be moved as
well? Things like #pragma GCC target("arch=la664") may affect them.
--
Xi Ruoyao <xry...@xry111.site>
School of Aerospace Science and Technology, Xidian University
