Subzero: Make thread_local work under MacOS 10.6.

src/IceDefs.h

Index: src/IceDefs.h
diff --git a/src/IceDefs.h b/src/IceDefs.h
index 991e47f100957f7804a2f63aacc0c00d97fcc16b..f32cdcc0e20ef1523f224ee65aa3932913f04e16 100644
--- a/src/IceDefs.h
+++ b/src/IceDefs.h
@@ -38,6 +38,15 @@
 #include "llvm/Support/ELF.h"
 #include "llvm/Support/raw_ostream.h"
 
+// TODO(stichnot): Define ATTRIBUTE_TLS as thread_local after all
+// compilers support that C++11 keyword.  In particular, MacOS 10.6
+// does not support it.
+#if defined (_MSC_VER)
+#define ATTRIBUTE_TLS __declspec(thread)
+#else // !_MSC_VER
+#define ATTRIBUTE_TLS __thread
+#endif // !_MSC_VER

[JF, 2015/01/23 18:17:55]

SUBZERO_ATTRIBUTE_TLS

[Jim Stichnoth, 2015/01/23 18:22:30]

Done (using ICE_ATTRIBUTE_TLS instead).

+
 namespace Ice {
 
 class Assembler;