[Openmp-commits] [openmp] [OpenMP] Enable automatic unified shared memory on MI300A. (PR #77512)

[Joseph Huber via Openmp-commits]

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@@ -116,6 +116,34 @@ inline bool isImageCompatibleWithEnv(StringRef ImageArch, uint32_t ImageFlags,
   return true;
 }
 
+inline bool isXnackEnabledViaKernelParam() {
+
+  ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrError =
+      MemoryBuffer::getFileAsStream("/proc/cmdline");
+
+  if (std::error_code ErrorCode = FileOrError.getError()) {
+    FAILURE_MESSAGE("Cannot open /proc/cmdline : %s\n",
+                    ErrorCode.message().c_str());
+    return false;
+  }
+
+  StringRef FileContent = (FileOrError.get())->getBuffer();
+
+  StringRef RefString("amdgpu.noretry=");
+  int SizeOfRefString = RefString.size();
+
+  size_t Pos = FileContent.find_insensitive(RefString);
----------------
jhuber6 wrote:

StringRef has `contains_insensitive`.

https://github.com/llvm/llvm-project/pull/77512