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git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@353323 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/ELF/Config.h b/ELF/Config.h
index bc33fa8..7440026 100644
--- a/ELF/Config.h
+++ b/ELF/Config.h
@@ -81,7 +81,6 @@
// and such fields have the same name as the corresponding options.
// Most fields are initialized by the driver.
struct Configuration {
- std::atomic<bool> HasStaticTlsModel{false};
uint8_t OSABI = 0;
llvm::CachePruningPolicy ThinLTOCachePolicy;
llvm::StringMap<uint64_t> SectionStartMap;
@@ -255,6 +254,20 @@
// if that's true.)
bool IsMips64EL;
+ // True if we need to set the DF_STATIC_TLS flag to an output file,
+ // which works as a hint to the dynamic loader that the file contains
+ // code compiled with the static TLS model. The thread-local variable
+ // compiled with the static TLS model is faster but less flexible, and
+ // it may not be loaded using dlopen().
+ //
+ // We set this flag to true when we see a relocation for the static TLS
+ // model. Once this becomes true, it will never become false.
+ //
+ // Since the flag is updated by multi-threaded code, we use std::atomic.
+ // (Writing to a variable is not considered thread-safe even if the
+ // varaible is boolean and we always set the same value from all threads.)
+ std::atomic<bool> HasStaticTlsModel{false};
+
// Holds set of ELF header flags for the target.
uint32_t EFlags = 0;
