From 39429aada7ba6ab22dda6b62c0bc5bb59540d407 Mon Sep 17 00:00:00 2001
From: Wunkolo <Wunkolo@gmail.com>
Date: Fri, 3 May 2024 14:26:29 -0700
Subject: [PATCH] [a64] Fix `BYTE_SWAP_V128`

This just reverses the bytes of 32-bit values, not reverse the whole vector.
---
 src/xenia/cpu/backend/a64/a64_sequences.cc | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/xenia/cpu/backend/a64/a64_sequences.cc b/src/xenia/cpu/backend/a64/a64_sequences.cc
index a5c20802b..21fcde1de 100644
--- a/src/xenia/cpu/backend/a64/a64_sequences.cc
+++ b/src/xenia/cpu/backend/a64/a64_sequences.cc
@@ -2626,9 +2626,7 @@ struct BYTE_SWAP_V128
     : Sequence<BYTE_SWAP_V128, I<OPCODE_BYTE_SWAP, V128Op, V128Op>> {
   static void Emit(A64Emitter& e, const EmitArgType& i) {
     // Reverse upper and lower 64-bit halfs
-    e.REV64(i.dest.reg().B16(), i.src1.reg().B16());
-    // Reverse the 64-bit halfs themselves
-    e.EXT(i.dest.reg().B16(), i.dest.reg().B16(), i.dest.reg().B16(), 8);
+    e.REV32(i.dest.reg().B16(), i.src1.reg().B16());
   }
 };
 EMITTER_OPCODE_TABLE(OPCODE_BYTE_SWAP, BYTE_SWAP_I16, BYTE_SWAP_I32,