diff --git a/lldb/test/Shell/Register/Inputs/x86-64-write.cpp b/lldb/test/Shell/Register/Inputs/x86-64-write.cpp
--- a/lldb/test/Shell/Register/Inputs/x86-64-write.cpp
+++ b/lldb/test/Shell/Register/Inputs/x86-64-write.cpp
@@ -9,7 +9,7 @@
 
 int main() {
   constexpr xmm_t xmm_fill = {
-    .as_uint64 = { 0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F }
+    .as_uint64 = { 0, 0 }
   };
 
   uint64_t r64[8];
diff --git a/lldb/test/Shell/Register/Inputs/x86-mm-xmm-write.cpp b/lldb/test/Shell/Register/Inputs/x86-mm-xmm-write.cpp
--- a/lldb/test/Shell/Register/Inputs/x86-mm-xmm-write.cpp
+++ b/lldb/test/Shell/Register/Inputs/x86-mm-xmm-write.cpp
@@ -9,7 +9,7 @@
 
 int main() {
   constexpr xmm_t xmm_fill = {
-    .as_uint64 = { 0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F }
+    .as_uint64 = { 0, 0 }
   };
 
   uint64_t mm[8];
diff --git a/lldb/test/Shell/Register/Inputs/x86-ymm-write.cpp b/lldb/test/Shell/Register/Inputs/x86-ymm-write.cpp
--- a/lldb/test/Shell/Register/Inputs/x86-ymm-write.cpp
+++ b/lldb/test/Shell/Register/Inputs/x86-ymm-write.cpp
@@ -9,8 +9,7 @@
 
 int main() {
   constexpr ymm_t ymm_fill = {
-    .as_uint64 = { 0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F,
-                   0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F }
+    .as_uint64 = { 0, 0, 0, 0 }
   };
 
   ymm_t ymm[16];
diff --git a/lldb/test/Shell/Register/Inputs/x86-zmm-write.cpp b/lldb/test/Shell/Register/Inputs/x86-zmm-write.cpp
--- a/lldb/test/Shell/Register/Inputs/x86-zmm-write.cpp
+++ b/lldb/test/Shell/Register/Inputs/x86-zmm-write.cpp
@@ -9,10 +9,7 @@
 
 int main() {
   constexpr zmm_t zmm_fill = {
-    .as_uint64 = { 0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F,
-                   0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F,
-                   0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F,
-                   0x0F0F0F0F0F0F0F0F, 0x0F0F0F0F0F0F0F0F }
+    .as_uint64 = { 0, 0, 0, 0, 0, 0, 0, 0 }
   };
 
   zmm_t zmm[32];