Commit d1bc75d7 authored by WANG Xuerui's avatar WANG Xuerui Committed by Huacai Chen
Browse files

LoongArch: Simplify "BLT foo, zero" with BLTZ 



Support for the syntactic sugar is present in upstream binutils port
from the beginning. Use it for shorter lines and better consistency.
Generated code should be identical.

Signed-off-by: default avatarWANG Xuerui <git@xen0n.name>
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
parent d47b2dc8

arch/loongarch/include/asm/atomic.h

+4 −4
Original line number Diff line number Diff line
@@ -158,7 +158,7 @@ static inline int arch_atomic_sub_if_positive(int i, atomic_t *v) 
		"1:	ll.w	%1, %2		# atomic_sub_if_positive\n"

		"	addi.w	%0, %1, %3				\n"

		"	move	%1, %0					\n"

		"	blt	%0, $zero, 2f				\n"

		"	bltz	%0, 2f					\n"

		"	sc.w	%1, %2					\n"

		"	beqz	%1, 1b					\n"

		"2:							\n"
@@ -171,7 +171,7 @@ static inline int arch_atomic_sub_if_positive(int i, atomic_t *v) 
		"1:	ll.w	%1, %2		# atomic_sub_if_positive\n"

		"	sub.w	%0, %1, %3				\n"

		"	move	%1, %0					\n"

		"	blt	%0, $zero, 2f				\n"

		"	bltz	%0, 2f					\n"

		"	sc.w	%1, %2					\n"

		"	beqz	%1, 1b					\n"

		"2:							\n"
@@ -321,7 +321,7 @@ static inline long arch_atomic64_sub_if_positive(long i, atomic64_t *v) 
		"1:	ll.d	%1, %2	# atomic64_sub_if_positive	\n"

		"	addi.d	%0, %1, %3				\n"

		"	move	%1, %0					\n"

		"	blt	%0, $zero, 2f				\n"

		"	bltz	%0, 2f					\n"

		"	sc.d	%1, %2					\n"

		"	beqz	%1, 1b					\n"

		"2:							\n"
@@ -334,7 +334,7 @@ static inline long arch_atomic64_sub_if_positive(long i, atomic64_t *v) 
		"1:	ll.d	%1, %2	# atomic64_sub_if_positive	\n"

		"	sub.d	%0, %1, %3				\n"

		"	move	%1, %0					\n"

		"	blt	%0, $zero, 2f				\n"

		"	bltz	%0, 2f					\n"

		"	sc.d	%1, %2					\n"

		"	beqz	%1, 1b					\n"

		"2:							\n"

arch/loongarch/mm/tlbex.S

+3 −3
Original line number Diff line number Diff line
@@ -47,7 +47,7 @@ SYM_FUNC_START(handle_tlb_load) 
	 * The vmalloc handling is not in the hotpath.

	 */

	csrrd	t0, LOONGARCH_CSR_BADV

	blt	t0, zero, vmalloc_load

	bltz	t0, vmalloc_load

	csrrd	t1, LOONGARCH_CSR_PGDL



vmalloc_done_load:
@@ -210,7 +210,7 @@ SYM_FUNC_START(handle_tlb_store) 
	 * The vmalloc handling is not in the hotpath.

	 */

	csrrd	t0, LOONGARCH_CSR_BADV

	blt	t0, zero, vmalloc_store

	bltz	t0, vmalloc_store

	csrrd	t1, LOONGARCH_CSR_PGDL



vmalloc_done_store:
@@ -378,7 +378,7 @@ SYM_FUNC_START(handle_tlb_modify) 
	 * The vmalloc handling is not in the hotpath.

	 */

	csrrd	t0, LOONGARCH_CSR_BADV

	blt	t0, zero, vmalloc_modify

	bltz	t0, vmalloc_modify

	csrrd	t1, LOONGARCH_CSR_PGDL



vmalloc_done_modify: