[llvm] Add macOS premerge check workflow (PR #207435)

[Aiden Grossman via llvm-commits]

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@@ -132,19 +132,26 @@
 
 EXCLUDE_MAC = {
     "bolt",
-    "compiler-rt",
+    "CIR",  # Depends on mlir, which is excluded below.
     "cross-project-tests",
     "flang",
+    "flang-rt",
     "libc",
-    "lldb",
+    "mlir",
     "openmp",
     "polly",
     "libcxx",
     "libcxxabi",
-    "libunwind",
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boomanaiden154 wrote:

I didn't realize that it was getting removed in this patch. I think it would be fine to remove in a follow-up.

https://github.com/llvm/llvm-project/pull/207435