From 962b68b964992ca83208d488743f9e21cfb5de13 Mon Sep 17 00:00:00 2001
From: Maurice Heumann <maurice.heumann@thalesgroup.com>
Date: Wed, 11 Mar 2026 13:00:27 +0100
Subject: [PATCH] Fix zero extension for MOVD semantics with MMX registers

---
 lib/Arch/X86/Semantics/DATAXFER.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/Arch/X86/Semantics/DATAXFER.cpp b/lib/Arch/X86/Semantics/DATAXFER.cpp
index be1884d1..66f60555 100644
--- a/lib/Arch/X86/Semantics/DATAXFER.cpp
+++ b/lib/Arch/X86/Semantics/DATAXFER.cpp
@@ -260,8 +260,8 @@ DEF_ISEL(VMOVQ_MEMu64_XMMu64_AVX512) = MOVQ<MV64W, V128>;
 #  endif  // HAS_FEATURE_AVX512
 #endif  // HAS_FEATURE_AVX
 
-DEF_ISEL(MOVD_MMXq_MEMd) = MOVD<V32W, MV32>;
-DEF_ISEL(MOVD_MMXq_GPR32) = MOVD<V32W, V32>;
+DEF_ISEL(MOVD_MMXq_MEMd) = MOVD<V64W, MV32>;  // Zero extends.
+DEF_ISEL(MOVD_MMXq_GPR32) = MOVD<V64W, V32>;  // Zero extends.
 DEF_ISEL(MOVD_MEMd_MMXd) = MOVD<MV32W, V32>;
 DEF_ISEL(MOVD_GPR32_MMXd) = MOVD<V32W, V32>;