[llvm] [NVPTX] Fix incorrect kill flags in ProxyRegErasure (PR #198143)

[Matt Arsenault via llvm-commits]

================
@@ -0,0 +1,25 @@
+# RUN: llc %s --run-pass=nvptx-proxyreg-erasure -verify-machineinstrs -mtriple=nvptx64 -o - | FileCheck %s
+
+--- |
+  define void @test_proxy_reg() {
+  entry:
+    ret void
+  }
+
+...
----------------
arsenm wrote:

```suggestion
# RUN: llc %s --run-pass=nvptx-proxyreg-erasure -mtriple=nvptx64 -o - | FileCheck %s

```

https://github.com/llvm/llvm-project/pull/198143