[clang] [flang] [flang]Add support for -moutline-atomics and -mno-outline-atomics (PR #78755)

[Kiran Chandramohan via cfe-commits]

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+! RUN: %flang -S -emit-llvm --target=aarch64-none-none -moutline-atomics -o - %s | FileCheck %s --check-prefixes=CHECKON,CHECKALL
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kiranchandramohan wrote:

I think it is better if this is in the integration test directory.

https://github.com/llvm/llvm-project/pull/78755