From: Xi Ruoyao <xry111@xry111.site>
Date: Sun, 16 Nov 2025 09:04:13 +0000 (+0800)
Subject: LoongArch: NFC: Simplify vec_permv8sf logic
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=57b4620e7a1ee2ab9b774e3ea3ce5461433c82d9;p=thirdparty%2Fgcc.git

LoongArch: NFC: Simplify vec_permv8sf logic

gcc/

	* config/loongarch/lasx.md (lasx_xvperm_<lasxfmt_f_wd>): Add
	"@" for gen_lasx_xvperm helper.
	* config/loongarch/loongarch.cc (loongarch_expand_vec_perm_1):
	Call gen_lasx_xvperm to unify V8SF and V8SI handling.
---

diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md
index e0af1e4c590..2b63507f22f 100644
--- a/gcc/config/loongarch/lasx.md
+++ b/gcc/config/loongarch/lasx.md
@@ -469,8 +469,8 @@
   [(set_attr "type" "simd_splat")
    (set_attr "mode" "<MODE>")])
 
-;; xshuf.w
-(define_insn "lasx_xvperm_<lasxfmt_f_wd>"
+;; xvperm.w
+(define_insn "@lasx_xvperm_<lasxfmt_f_wd>"
   [(set (match_operand:LASX_W 0 "register_operand" "=f")
 	(unspec:LASX_W
 	  [(match_operand:LASX_W 1 "nonimmediate_operand" "f")
diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc
index 73ff7e4274e..3a5ccda808e 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -9133,33 +9133,20 @@ loongarch_expand_vec_perm_1 (rtx operands[])
   switch (mode)
     {
     case E_V8SImode:
+    case E_V8SFmode:
       if (one_operand_shuffle)
 	{
-	  emit_insn (gen_lasx_xvperm_w (target, op0, mask));
+	  emit_insn (gen_lasx_xvperm (mode, target, op0, mask));
 	  if (target != operands[0])
 	    emit_move_insn (operands[0],
 			    gen_lowpart (GET_MODE (operands[0]), target));
 	}
       else
 	{
-	  t1 = gen_reg_rtx (V8SImode);
-	  t2 = gen_reg_rtx (V8SImode);
-	  emit_insn (gen_lasx_xvperm_w (t1, op0, mask));
-	  emit_insn (gen_lasx_xvperm_w (t2, op1, mask));
-	  goto merge_two;
-	}
-      return;
-
-    case E_V8SFmode:
-      mask = gen_lowpart (V8SImode, mask);
-      if (one_operand_shuffle)
-	emit_insn (gen_lasx_xvperm_w_f (target, op0, mask));
-      else
-	{
-	  t1 = gen_reg_rtx (V8SFmode);
-	  t2 = gen_reg_rtx (V8SFmode);
-	  emit_insn (gen_lasx_xvperm_w_f (t1, op0, mask));
-	  emit_insn (gen_lasx_xvperm_w_f (t2, op1, mask));
+	  t1 = gen_reg_rtx (mode);
+	  t2 = gen_reg_rtx (mode);
+	  emit_insn (gen_lasx_xvperm (mode, t1, op0, mask));
+	  emit_insn (gen_lasx_xvperm (mode, t2, op1, mask));
 	  goto merge_two;
 	}
       return;