From 4e6967aba1aaa9dfc362ce59b3d9358a6a15603c Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111@xry111.site>
Date: Wed, 12 Mar 2025 21:02:38 +0800
Subject: [PATCH] LoongArch: Don't use C++17 feature [PR119238]

Structured binding is a C++17 feature but the GCC code base is in C++14.

gcc/ChangeLog:

	PR target/119238
	* config/loongarch/simd.md (<su>dot_prod<wvec_half><mode>):
	Stop using structured binding.
---
 gcc/config/loongarch/simd.md | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/gcc/config/loongarch/simd.md b/gcc/config/loongarch/simd.md
index 8f7e912982e..dd17cd13fc5 100644
--- a/gcc/config/loongarch/simd.md
+++ b/gcc/config/loongarch/simd.md
@@ -809,18 +809,20 @@
    (any_extend (const_int 0))]
   ""
 {
-  auto [op0, op1, op2, op3] = operands;
+  rtx *op = operands;
 
-  if (op3 == CONST0_RTX (<WVEC_HALF>mode))
+  if (op[3] == CONST0_RTX (<WVEC_HALF>mode))
     emit_insn (
-      gen_<simd_isa>_<x>vmulwev_<simdfmt_w>_<simdfmt><u> (op0, op1, op2));
+      gen_<simd_isa>_<x>vmulwev_<simdfmt_w>_<simdfmt><u> (op[0], op[1],
+							  op[2]));
   else
     emit_insn (
-      gen_<simd_isa>_<x>vmaddwev_<simdfmt_w>_<simdfmt><u> (op0, op3, op1,
-							   op2));
+      gen_<simd_isa>_<x>vmaddwev_<simdfmt_w>_<simdfmt><u> (op[0], op[3],
+							   op[1], op[2]));
 
   emit_insn (
-    gen_<simd_isa>_<x>vmaddwod_<simdfmt_w>_<simdfmt><u> (op0, op0, op1, op2));
+    gen_<simd_isa>_<x>vmaddwod_<simdfmt_w>_<simdfmt><u> (op[0], op[0],
+							 op[1], op[2]));
   DONE;
 })