From 38438021c770f077b78092299f22712fdd734814 Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111@xry111.site>
Date: Tue, 19 Dec 2023 05:02:42 +0800
Subject: [PATCH 077/188] LoongArch: Clean up vec_init expander

Non functional change, clean up the code.

gcc/ChangeLog:

	* config/loongarch/loongarch.cc
	(loongarch_expand_vector_init_same): Remove "temp2" and reuse
	"temp" instead.
	(loongarch_expand_vector_init): Use gcc_unreachable () instead
	of gcc_assert (0), and fix the comment for it.
---
 gcc/config/loongarch/loongarch.cc | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc
index 000d2d623..3aeafeafd 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -10723,7 +10723,7 @@ loongarch_expand_vector_init_same (rtx target, rtx vals, unsigned nvar)
   machine_mode vmode = GET_MODE (target);
   machine_mode imode = GET_MODE_INNER (vmode);
   rtx same = XVECEXP (vals, 0, 0);
-  rtx temp, temp2;
+  rtx temp;
 
   if (CONST_INT_P (same) && nvar == 0
       && loongarch_signed_immediate_p (INTVAL (same), 10, 0))
@@ -10747,17 +10747,17 @@ loongarch_expand_vector_init_same (rtx target, rtx vals, unsigned nvar)
     }
 
   if (imode == GET_MODE (same))
-    temp2 = same;
+    temp = same;
   else if (GET_MODE_SIZE (imode) >= UNITS_PER_WORD)
     {
       if (GET_CODE (same) == MEM)
 	{
 	  rtx reg_tmp = gen_reg_rtx (GET_MODE (same));
 	  loongarch_emit_move (reg_tmp, same);
-	  temp2 = simplify_gen_subreg (imode, reg_tmp, GET_MODE (reg_tmp), 0);
+	  temp = simplify_gen_subreg (imode, reg_tmp, GET_MODE (reg_tmp), 0);
 	}
       else
-	temp2 = simplify_gen_subreg (imode, same, GET_MODE (same), 0);
+	temp = simplify_gen_subreg (imode, same, GET_MODE (same), 0);
     }
   else
     {
@@ -10765,13 +10765,13 @@ loongarch_expand_vector_init_same (rtx target, rtx vals, unsigned nvar)
 	{
 	  rtx reg_tmp = gen_reg_rtx (GET_MODE (same));
 	  loongarch_emit_move (reg_tmp, same);
-	  temp2 = lowpart_subreg (imode, reg_tmp, GET_MODE (reg_tmp));
+	  temp = lowpart_subreg (imode, reg_tmp, GET_MODE (reg_tmp));
 	}
       else
-	temp2 = lowpart_subreg (imode, same, GET_MODE (same));
+	temp = lowpart_subreg (imode, same, GET_MODE (same));
     }
 
-  temp = force_reg (imode, temp2);
+  temp = force_reg (imode, temp);
 
   switch (vmode)
     {
@@ -11117,8 +11117,8 @@ loongarch_expand_vector_init (rtx target, rtx vals)
       return;
     }
 
-  /* Loongson is the only cpu with vectors with more elements.  */
-  gcc_assert (0);
+  /* No LoongArch CPU supports vectors with more elements as at now.  */
+  gcc_unreachable ();
 }
 
 /* Implement HARD_REGNO_CALLER_SAVE_MODE.  */
-- 
2.43.0