Revert "[Cygwin] Define LLVM_ABI for Cygwin (#143222)"

[kikairoya]

Flang Merge CI rejects changes to llvm/Support/Compiler.h because precompiled headers aren't rebuilt when their dependencies change.

This reverts commit 60d0004.

[llvmbot]

@llvm/pr-subscribers-llvm-support

Author: Tomohiro Kashiwada (kikairoya)

Changes

Flang Merge CI rejects changes to llvm/Support/Compiler.h because precompiled headers aren't rebuilt when their dependencies change.

This reverts commit 60d0004.

---

Full diff: https://github.com/llvm/llvm-project/pull/144210.diff

1 Files Affected:

• (modified) llvm/include/llvm/Support/Compiler.h (+1-1)

diff --git a/llvm/include/llvm/Support/Compiler.h b/llvm/include/llvm/Support/Compiler.h
index 0de789ec68c49..f6bc05011e3c3 100644
--- a/llvm/include/llvm/Support/Compiler.h
+++ b/llvm/include/llvm/Support/Compiler.h
@@ -209,7 +209,7 @@
 #define LLVM_ABI_FRIEND LLVM_ABI
 #define LLVM_ABI_EXPORT __declspec(dllexport)
 #elif defined(__ELF__) || defined(__MINGW32__) || defined(_AIX) ||             \
-    defined(__MVS__) || defined(__CYGWIN__)
+    defined(__MVS__)
 #define LLVM_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT
 #define LLVM_ABI_FRIEND
 #define LLVM_TEMPLATE_ABI LLVM_ATTRIBUTE_VISIBILITY_DEFAULT

[kikairoya]

#144211

[jeremyd2019]

This seems like a bug in the CI then, why revert this?

[kikairoya]

I thought this should be applied after the CI script is fixed. If that's not necessary, I'll close this.

[jeremyd2019]

I don't know - we'll see if somebody who does chimes in, but I wanted to clarify that this is really a CI bug.

[kikairoya]

I'll leave this open for now, but I hope it can be resolved by fixing the CI.

[kikairoya]

https://lab.llvm.org/buildbot/#/builders/207/builds/2664
CI has recovered to green (seems manually).