diff --git a/src/internal/bytealg/compare_loong64.s b/src/internal/bytealg/compare_loong64.s
index 54c2daba69..c89c5a9256 100644
--- a/src/internal/bytealg/compare_loong64.s
+++ b/src/internal/bytealg/compare_loong64.s
@@ -48,6 +48,7 @@ entry:
 	AND	$7, R15
 	BNE	R0, R15, byte_loop
 
+	PCALIGN	$16
 chunk16_loop:
 	BEQ	R0, R14, byte_loop
 	MOVV	(R6), R8
diff --git a/src/internal/bytealg/equal_loong64.s b/src/internal/bytealg/equal_loong64.s
index dcdde89b25..ba2a5578c3 100644
--- a/src/internal/bytealg/equal_loong64.s
+++ b/src/internal/bytealg/equal_loong64.s
@@ -14,6 +14,7 @@ TEXT runtime·memequal(SB),NOSPLIT|NOFRAME,$0-25
 	BEQ	R4, R5, eq
 	MOVV	size+16(FP), R6
 	ADDV	R4, R6, R7
+	PCALIGN	$16
 loop:
 	BNE	R4, R7, test
 	MOVV	$1, R4
diff --git a/src/internal/bytealg/indexbyte_loong64.s b/src/internal/bytealg/indexbyte_loong64.s
index baa9c86be2..604970549f 100644
--- a/src/internal/bytealg/indexbyte_loong64.s
+++ b/src/internal/bytealg/indexbyte_loong64.s
@@ -13,6 +13,7 @@ TEXT ·IndexByte(SB),NOSPLIT,$0-40
 	ADDV	R4, R5		// end
 	ADDV	$-1, R4
 
+	PCALIGN	$16
 loop:
 	ADDV	$1, R4
 	BEQ	R4, R5, notfound
@@ -36,6 +37,7 @@ TEXT ·IndexByteString(SB),NOSPLIT,$0-32
 	ADDV	R4, R5		// end
 	ADDV	$-1, R4
 
+	PCALIGN	$16
 loop:
 	ADDV	$1, R4
 	BEQ	R4, R5, notfound
diff --git a/src/runtime/memclr_loong64.s b/src/runtime/memclr_loong64.s
index e4f20587b7..7bb6f3dfc9 100644
--- a/src/runtime/memclr_loong64.s
+++ b/src/runtime/memclr_loong64.s
@@ -26,6 +26,7 @@ words:
 	// do 8 bytes at a time if there is room
 	ADDV	$-7, R4, R7
 
+	PCALIGN	$16
 	SGTU	R7, R6, R8
 	BEQ	R8, out
 	MOVV	R0, (R6)
diff --git a/src/runtime/memmove_loong64.s b/src/runtime/memmove_loong64.s
index b7b9c56627..0f139bcc13 100644
--- a/src/runtime/memmove_loong64.s
+++ b/src/runtime/memmove_loong64.s
@@ -42,6 +42,7 @@ words:
 	// do 8 bytes at a time if there is room
 	ADDV	$-7, R9, R6 // R6 is end pointer-7
 
+	PCALIGN	$16
 	SGTU	R6, R4, R8
 	BEQ	R8, out
 	MOVV	(R5), R7
@@ -86,6 +87,7 @@ words1:
 	// do 8 bytes at a time if there is room
 	ADDV	$7, R4, R6 // R6 is start pointer+7
 
+	PCALIGN	$16
 	SGTU	R9, R6, R8
 	BEQ	R8, out1
 	ADDV	$-8, R5