diff options
| -rw-r--r-- | llvm/include/llvm/Support/Compiler.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/llvm/include/llvm/Support/Compiler.h b/llvm/include/llvm/Support/Compiler.h index c3c416f7d9b..f1d30248a17 100644 --- a/llvm/include/llvm/Support/Compiler.h +++ b/llvm/include/llvm/Support/Compiler.h @@ -394,11 +394,12 @@ #elif defined(__clang__) && defined(__powerpc64__) // Clang, GCC, and all compatible compilers tend to use __thread. But we need // to work aronud a bug in the combination of Clang's compilation of -// local-dynamic TLS and the ppc64 linker relocations which we do by forcing to -// global-dynamic (called in most documents "general dynamic"). +// global-dynamic and local-dynamic TLS and the ppc64 linker relocations which +// we do by forcing initial-exec. While that mode isn't strictly sufficient for +// all possible DSO use cases, it will usually work with glibc. // FIXME: Make this conditional on the Clang version once this is fixed in // top-of-tree. -#define LLVM_THREAD_LOCAL __thread __attribute__((tls_model("global-dynamic"))) +#define LLVM_THREAD_LOCAL __thread __attribute__((tls_model("initial-exec"))) #else #define LLVM_THREAD_LOCAL __thread #endif |
