NVPTX: fix test failures under ptxas-12.0.

(Because ptxas-12 no longer supports 32-bit.)

Fixes c5b11a7 and 8da3a8f.

Author: jyknight

llvm/test/CodeGen/NVPTX/param-overalign.ll

@@ -1,5 +1,5 @@
 ; RUN: llc < %s -march=nvptx | FileCheck %s
-; RUN: %if ptxas %{ llc < %s -march=nvptx -verify-machineinstrs | %ptxas-verify %}
+; RUN: %if ptxas && !ptxas-12.0 %{ llc < %s -march=nvptx -verify-machineinstrs | %ptxas-verify %}
 
 target triple = "nvptx64-nvidia-cuda"
 

llvm/test/CodeGen/NVPTX/st-param-imm.ll

@@ -1,7 +1,7 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
 ; RUN: llc < %s -march=nvptx64 | FileCheck %s
 ; RUN: llc < %s -march=nvptx | FileCheck %s
-; RUN: %if ptxas %{ llc < %s -march=nvptx -verify-machineinstrs | %ptxas-verify %}
+; RUN: %if ptxas && !ptxas-12.0 %{ llc < %s -march=nvptx -verify-machineinstrs | %ptxas-verify %}
 ; RUN: %if ptxas %{ llc < %s -march=nvptx64 -verify-machineinstrs | %ptxas-verify %}
 
 target triple = "nvptx64-nvidia-cuda"