update test

Author: AlexMaclean

llvm/test/CodeGen/NVPTX/szext.ll

@@ -1,7 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
 ; RUN: llc -o - < %s -mcpu=sm_70 -mattr=+ptx76 | FileCheck %s
+; RUN: %if ptxas %{ llc < %s -mcpu=sm_70 -mattr=+ptx76 | %ptxas-verify -arch=sm_70 %}
 
-target triple = "nvptx-unknown-cuda"
+target triple = "nvptx64-unknown-cuda"
 
 define i32 @szext_wrap_u32(i32 %a, i32 %b) {
 ; CHECK-LABEL: szext_wrap_u32(