From 77e320f79a937053e0f7600af93e55667f84e0d8 Mon Sep 17 00:00:00 2001
From: "Herman S." <429230+has207@users.noreply.github.com>
Date: Sat, 25 Oct 2025 17:47:18 +0900
Subject: [PATCH] [x64] Fix AVX2 optimization path for VECTOR_SHL_V128

Ensure the optimized path matches the fallback behavior
---
 src/xenia/cpu/backend/x64/x64_seq_vector.cc | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/xenia/cpu/backend/x64/x64_seq_vector.cc b/src/xenia/cpu/backend/x64/x64_seq_vector.cc
index 685f73c7b..6b8ea5287 100644
--- a/src/xenia/cpu/backend/x64/x64_seq_vector.cc
+++ b/src/xenia/cpu/backend/x64/x64_seq_vector.cc
@@ -947,9 +947,9 @@ struct VECTOR_SHL_V128
         e.vpshufb(e.xmm2, e.xmm2, e.GetXmmConstPtr(XMMIntsToBytes));
         e.vpshufb(e.xmm3, e.xmm3, e.GetXmmConstPtr(XMMIntsToBytes));
 
-        e.vpunpckldq(e.xmm0, e.xmm0, e.xmm1);
-        e.vpunpckldq(e.xmm2, e.xmm2, e.xmm3);
-        e.vpunpcklqdq(i.dest, e.xmm0, e.xmm2);
+        e.vpunpckldq(e.xmm0, e.xmm0, e.xmm2);
+        e.vpunpckldq(e.xmm1, e.xmm1, e.xmm3);
+        e.vpunpcklqdq(i.dest, e.xmm0, e.xmm1);
         return;
       } else {
         vec128_t constmask = i.src2.constant();
@@ -1001,9 +1001,9 @@ struct VECTOR_SHL_V128
           e.vpshufb(e.xmm2, e.xmm2, e.GetXmmConstPtr(XMMIntsToBytes));
           e.vpshufb(e.xmm3, e.xmm3, e.GetXmmConstPtr(XMMIntsToBytes));
 
-          e.vpunpckldq(e.xmm0, e.xmm0, e.xmm1);
-          e.vpunpckldq(e.xmm2, e.xmm2, e.xmm3);
-          e.vpunpcklqdq(i.dest, e.xmm0, e.xmm2);
+          e.vpunpckldq(e.xmm0, e.xmm0, e.xmm2);
+          e.vpunpckldq(e.xmm1, e.xmm1, e.xmm3);
+          e.vpunpcklqdq(i.dest, e.xmm0, e.xmm1);
 
           return;
         }