[llvm] [NVPTX] Support for fence.acquire and fence.release (PR #124865)

[Justin Fargnoli via llvm-commits]

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@@ -0,0 +1,355 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -march=nvptx64 -mcpu=sm_30 -mattr=+ptx50 | FileCheck %s --check-prefix=SM30
+; RUN: %if ptxas %{ llc < %s -march=nvptx -mcpu=sm_30 -mattr=+ptx50 | %ptxas-verify %}
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justinfargnoli wrote:

```suggestion
; RUN: %if ptxas %{ llc < %s -march=nvptx64 -mcpu=sm_30 -mattr=+ptx50 | %ptxas-verify %}
```

https://github.com/llvm/llvm-project/pull/124865