[Bug target/113033] GCC 14 (20231203 snapshot) ICE when building LSX vector rotate code on LoongArch

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113033

--- Comment #9 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
diff --git a/gcc/config/loongarch/loongarch.cc
b/gcc/config/loongarch/loongarch.cc
index 256fa7d048d..65a2915329e 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -10770,7 +10770,7 @@ loongarch_expand_vector_init_same (rtx target, rtx
vals, unsigned nvar)
          gcc_unreachable ();
        }
     }
-  temp = gen_reg_rtx (imode);
+
   if (imode == GET_MODE (same))
     temp2 = same;
   else if (GET_MODE_SIZE (imode) >= UNITS_PER_WORD)
@@ -10795,7 +10795,8 @@ loongarch_expand_vector_init_same (rtx target, rtx
vals, unsigned nvar)
       else
        temp2 = lowpart_subreg (imode, same, GET_MODE (same));
     }
-  emit_move_insn (temp, temp2);
+
+  temp = force_reg (imode, temp2);

   switch (vmode)
     {

I mistakenly thought force_reg is just creating an reg and moving into it (if
the operand is not already in reg) but I was wrong.