[clang] [flang] [mlir] [flang] Retry add basic -mtune support (PR #96688)

[Alexis Perry-Holby via cfe-commits]

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@@ -0,0 +1,9 @@
+; RUN: mlir-translate -import-llvm -split-input-file %s | FileCheck %s
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AlexisPerry wrote:

Thank you so much for the catch!  Yes, this guard is absolutely needed.

https://github.com/llvm/llvm-project/pull/96688