From bf6a0a035aa814a66da73506f0d85a27653f7345 Mon Sep 17 00:00:00 2001
From: refractionpcsx2 <refraction@gmail.com>
Date: Tue, 2 May 2023 23:19:02 +0100
Subject: [PATCH] VIF-JIT: Ignore completely write protected vectors

---
 pcsx2/x86/newVif_Dynarec.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pcsx2/x86/newVif_Dynarec.cpp b/pcsx2/x86/newVif_Dynarec.cpp
index e570fbc0f..2874b68c9 100644
--- a/pcsx2/x86/newVif_Dynarec.cpp
+++ b/pcsx2/x86/newVif_Dynarec.cpp
@@ -122,6 +122,10 @@ void VifUnpackSSE_Dynarec::doMaskWrite(const xRegisterSSE& regX) const
 	makeMergeMask(m3);
 	makeMergeMask(m4);
 
+	// Everything is write protected, don't touch it, saveReg can't handle a mask of 0.
+	if (doMask && m4 == 0xf)
+		return;
+
 	if (doMask && m2) // Merge MaskRow
 	{
 		mVUmergeRegs(regX, xmmRow, m2);