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LoongArch: C and .h files for LA32

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gcc/ChangeLog:

	* config/loongarch/loongarch-opts.cc (loongarch_target_option_override):
	Delete opts->x_flag_pcc_struct_return and enable mstrict-align by
	default on LA32.
	* config/loongarch/loongarch.cc (loongarch_for_each_saved_reg): Save reg
	depend on float abi.
	(loongarch_explicit_relocs_p): Disable explicit relocs on LA32.
	(loongarch_valid_offset_p): Disable const_imm16_operand with 4 byte aligned.
	(loongarch_valid_lo_sum_p): Allow lo_sum to be used with DF in ilp32d.
	(loongarch_valid_index_p): Disable ADDRESS_REG_REG on LA32.
	(loongarch_legitimize_address): Disable mem_shadd_or_shadd_rtx_p on LA32.
	(loongarch_output_move_index):  Assert TARGET_64BIT for ldx/stx.
	(loongarch_output_move): Disable ldptr/stptr if offset is 0.
	(loongarch_output_equal_conditional_branch): Disable beqz/bnez on LA32R.
	(loongarch_trampoline_init): Change pcaddi to pcaddu12i.
	(loongarch_get_separate_components): Disable ldptr/stptr on LA32.
	(loongarch_c_mode_for_floating_type): Use TFmode for long double
	regardless of target bitness.
	(loongarch_bitint_type_info): Disable BitInt on LA32.
	(loongarch_call_tls_get_addr): Use call30 on LA32.
	(loongarch_split_move): Add split for DI, DF, TF.
	* config/loongarch/loongarch.h (LA_LONG_DOUBLE_TYPE_SIZE): Set
	LONG_DOUBLE_TYPE_SIZE to 128 regardless of target bitness.
	(MAX_FIXED_MODE_SIZE): Set to 64 on LA32.
	(DEFAULT_PCC_STRUCT_RETURN): New.
	(STACK_BOUNDARY): Set to 128 on LA64 and LA32.
	(LARCH_STACK_ALIGN): Set to 16 on LA64 and LA32.
	(TRAMPOLINE_SIZE): Set to same value on LA64 and LA32.

include/ChangeLog:

	* longlong.h (count_leading_zeros): Delete because LA32R no clz.
	(count_trailing_zeros): Delete because LA32R no ctz.
	(COUNT_LEADING_ZEROS_0): Delete.

Co-authored-by: Jiajie Chen <c@jia.je>
Reviewed-by: Xi Ruoyao <xry111@xry111.site>
Reviewed-by: Lulu Cheng <chenglulu@loongson.cn>
This commit is contained in:
mengqinggang
2025-11-25 19:07:42 +08:00
committed by Lulu Cheng
parent f5ae30e614
commit 5c821cbae4
4 changed files with 120 additions and 50 deletions
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6
include/longlong.h
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@@ -594,11 +594,7 @@ extern UDItype __umulsidi3 (USItype, USItype);
#endif
#ifdef __loongarch__
# if W_TYPE_SIZE == 32
# define count_leading_zeros(count, x) ((count) = __builtin_clz (x))
# define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x))
# define COUNT_LEADING_ZEROS_0 32
# elif W_TYPE_SIZE == 64
# if W_TYPE_SIZE == 64
# define count_leading_zeros(count, x) ((count) = __builtin_clzll (x))
# define count_trailing_zeros(count, x) ((count) = __builtin_ctzll (x))
# define COUNT_LEADING_ZEROS_0 64