[compiler-rt] [PGO][Offload] Fix profile function visibility (PR #127257)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-pgo

Author: Ethan Luis McDonough (EthanLuisMcDonough)

<details>
<summary>Changes</summary>

This pull request fixes an issue that was introduced in #<!-- -->93365. `__llvm_write_custom_profile` visibility was causing issues on Darwin.

---
Full diff: https://github.com/llvm/llvm-project/pull/127257.diff


1 Files Affected:

- (modified) compiler-rt/lib/profile/InstrProfilingFile.c (+4-6) 


``````````diff
diff --git a/compiler-rt/lib/profile/InstrProfilingFile.c b/compiler-rt/lib/profile/InstrProfilingFile.c
index 503d159fd9817..673cb9a5208bb 100644
--- a/compiler-rt/lib/profile/InstrProfilingFile.c
+++ b/compiler-rt/lib/profile/InstrProfilingFile.c
@@ -1362,12 +1362,10 @@ COMPILER_RT_VISIBILITY int __llvm_profile_set_file_object(FILE *File,
   return 0;
 }
 
-int __llvm_write_custom_profile(const char *Target,
-                                const __llvm_profile_data *DataBegin,
-                                const __llvm_profile_data *DataEnd,
-                                const char *CountersBegin,
-                                const char *CountersEnd, const char *NamesBegin,
-                                const char *NamesEnd) {
+COMPILER_RT_VISIBILITY int __llvm_write_custom_profile(
+    const char *Target, const __llvm_profile_data *DataBegin,
+    const __llvm_profile_data *DataEnd, const char *CountersBegin,
+    const char *CountersEnd, const char *NamesBegin, const char *NamesEnd) {
   int ReturnValue = 0, FilenameLength, TargetLength;
   char *FilenameBuf, *TargetFilename;
   const char *Filename;

``````````

</details>


https://github.com/llvm/llvm-project/pull/127257