[libc] Remove LIBC_HAS_ATTRIBUTE macro

[vinayakdsci]

Resolves #86547

Replace occurrences of the macro LIBC_HAS_ATTRIBUTE with __has_attribute.

[llvmbot]

@llvm/pr-subscribers-libc

Author: Vinayak Dev (vinayakdsci)

Changes

Resolves #86547

Replace occurrences of the macro LIBC_HAS_ATTRIBUTE with __has_attribute.

---

Full diff: https://github.com/llvm/llvm-project/pull/86656.diff

2 Files Affected:

• (modified) libc/src/__support/macros/config.h (-8)
• (modified) libc/test/src/__support/arg_list_test.cpp (+1-1)

diff --git a/libc/src/__support/macros/config.h b/libc/src/__support/macros/config.h
index fcc8f551a783fe..6666c136669610 100644
--- a/libc/src/__support/macros/config.h
+++ b/libc/src/__support/macros/config.h
@@ -39,12 +39,4 @@
 #define LIBC_HAS_FEATURE(f) 0
 #endif
 
-// Compiler attribute-detection.
-// https://clang.llvm.org/docs/LanguageExtensions.html#has-attribute
-#ifdef __has_attribute
-#define LIBC_HAS_ATTRIBUTE(f) __has_attribute(f)
-#else
-#define LIBC_HAS_ATTRIBUTE(f) 0
-#endif
-
 #endif // LLVM_LIBC_SRC___SUPPORT_MACROS_CONFIG_H
diff --git a/libc/test/src/__support/arg_list_test.cpp b/libc/test/src/__support/arg_list_test.cpp
index 1876cf7f70b4b8..4f229e2bfe6940 100644
--- a/libc/test/src/__support/arg_list_test.cpp
+++ b/libc/test/src/__support/arg_list_test.cpp
@@ -120,7 +120,7 @@ TEST(LlvmLibcArgListTest, TestStructTypes) {
 }
 
 // Test vector extensions from clang.
-#if LIBC_HAS_ATTRIBUTE(ext_vector_type)
+#if __has_attribute(ext_vector_type)
 
 using int1 = int __attribute__((ext_vector_type(1)));
 using int2 = int __attribute__((ext_vector_type(2)));

[nickdesaulniers]

Thanks for the patch!

Are you able to merge this, or do you need one of us to?

[vinayakdsci]

Thanks!

Are you able to merge this, or do you need one of us to?

No, I will need you to merge it for me :)