LoongArch: Simplify "BLT foo, zero" with BLTZ

mainline inclusion
from mainline-v5.19
commit d1bc75d7
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5OHOB
CVE: NA

--------------------------------

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: NWANG Xuerui <git@xen0n.name>
Signed-off-by: NHuacai Chen <chenhuacai@loongson.cn>

arch/loongarch/include/asm/atomic.h

@@ -160,7 +160,7 @@ 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"
@@ -173,7 +173,7 @@ 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"
@@ -323,7 +323,7 @@ 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"
@@ -336,7 +336,7 @@ 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

@@ -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: