https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119127
--- Comment #1 from chenglulu <chenglulu at loongson dot cn> ---
This patch can fix the problem.
However, there are some parts that I haven't quite understood yet.
```
diff --git a/gcc/config/loongarch/loongarch.md
b/gcc/config/loongarch/loongarch.md
index 90c475ef0c0..80b2feb3457 100644
--- a/gcc/config/loongarch/loongarch.md
+++ b/gcc/config/loongarch/loongarch.md
@@ -3174,7 +3174,7 @@ (define_insn_and_split "<optab>_alsl_reversesi_extended"
(match_operand:SI 4 "register_operand" "r"))))]
"TARGET_64BIT
&& loongarch_reassoc_shift_bitwise (<is_and>, operands[2], operands[3],
- SImode)"
+ DImode)"
"#"
"&& reload_completed"
[; r0 = r1 [&|^] r3 is emitted in PREPARATION-STATEMENTS because we
@@ -3187,7 +3187,7 @@ (define_insn_and_split "<optab>_alsl_reversesi_extended"
operands[3] = loongarch_reassoc_shift_bitwise (<is_and>,
operands[2],
operands[3],
- SImode);
+ DImode);
if (ins_zero_bitmask_operand (operands[3], SImode))
{
```
