address comments -- fixup test somewhat

Author: AlexMaclean

llvm/test/CodeGen/NVPTX/addrspacecast-cse.ll

@@ -1,4 +1,4 @@
-; RUN: llc < %s -mcpu=sm_80 -mattr=+ptx73 -debug-only=isel -o /dev/null 2>&1 | FileCheck %s
+; RUN: llc < %s -O0 -debug-only=isel -o /dev/null 2>&1 | FileCheck %s
 
 ; REQUIRES: asserts
 
@@ -7,13 +7,17 @@ target triple = "nvptx64-nvidia-cuda"
 ;; Selection DAG CSE is hard to test since we run CSE/GVN on the IR before and
 ;; after selection DAG ISel so most cases will be handled by one of these.
 define void @foo(ptr %p) {
-; CHECK-LABEL: Optimized legalized selection DAG: %bb.0 'foo:'
-; CHECK:       addrspacecast[0 -> 5]
-; CHECK-NOT:   addrspacecast[0 -> 5]
-; CHECK-LABEL: ===== Instruction selection begins
+; CHECK-LABEL: Initial selection DAG
 ;
-  %a1 = addrspacecast ptr %p to ptr addrspace(5)
-  call void @llvm.stackrestore(ptr %p)
-  store ptr %p, ptr addrspace(5) %a1
-  ret void
+; CHECK:  [[ASC:t[0-9]+]]{{.*}} = addrspacecast
+; CHECK:                          store{{.*}} [[ASC]]
+; CHECK:                          store{{.*}} [[ASC]]
+;
+; CHECK-LABEL: Optimized lowered selection
+;
+   %a1 = addrspacecast ptr %p to ptr addrspace(5)
+   %a2 = addrspacecast ptr %p to ptr addrspace(5)
+   store i32 0, ptr addrspace(5) %a1
+   store i32 0, ptr addrspace(5) %a2
+   ret void
 }