From 93a5925f027ce5a4bd94f6411302df0041c24b44 Mon Sep 17 00:00:00 2001
From: SarahW <SarahW@localhost>
Date: Wed, 19 Dec 2018 22:23:59 +0000
Subject: [PATCH] Use MOVZX on x86-64 when loading a word sized function
 parameter. Fixes issues when built with LLVM and -O3.

---
 src/codegen_backend_x86-64_uops.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/codegen_backend_x86-64_uops.c b/src/codegen_backend_x86-64_uops.c
index ad11134..049c626 100644
--- a/src/codegen_backend_x86-64_uops.c
+++ b/src/codegen_backend_x86-64_uops.c
@@ -771,9 +771,9 @@ static int codegen_LOAD_FUNC_ARG0(codeblock_t *block, uop_t *uop)
         if (REG_IS_W(src_size))
         {
 #if WIN64
-                host_x86_MOV16_REG_REG(block, REG_ECX, src_reg);
+                host_x86_MOVZX_REG_32_16(block, REG_ECX, src_reg);
 #else
-                host_x86_MOV16_REG_REG(block, REG_EDI, src_reg);
+                host_x86_MOVZX_REG_32_16(block, REG_EDI, src_reg);
 #endif
         }
         else