[PATCH] D107556: [profile] Only use NT_GNU_BUILD_ID if supported

[Rainer Orth via Phabricator via llvm-commits]

ro updated this revision to Diff 364745.
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Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107556/new/

https://reviews.llvm.org/D107556

Files:
  compiler-rt/lib/profile/InstrProfilingPlatformLinux.c


Index: compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
===================================================================
--- compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
+++ compiler-rt/lib/profile/InstrProfilingPlatformLinux.c
@@ -85,6 +85,7 @@
 COMPILER_RT_VISIBILITY ValueProfNode *CurrentVNode = &PROF_VNODES_START;
 COMPILER_RT_VISIBILITY ValueProfNode *EndVNode = &PROF_VNODES_STOP;
 
+#ifdef NT_GNU_BUILD_ID
 static size_t RoundUp(size_t size, size_t align) {
   return (size + align - 1) & ~(align - 1);
 }
@@ -188,5 +189,14 @@
 
   return 0;
 }
+#else /* !NT_GNU_BUILD_ID */
+/*
+ * Fallback implementation for targets that don't support the GNU
+ * extensions NT_GNU_BUILD_ID and __ehdr_start.
+ */
+COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) {
+  return 0;
+}
+#endif
 
 #endif


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