Support for allocation of TLS variables in the JIT. Allocation of a global

variable is moved to the execution engine. The JIT calls the TargetJITInfo
to allocate thread local storage. Currently, only linux/x86 knows how to
allocate thread local global variables.

llvm-svn: 58142

1 files changed, 10 insertions, 0 deletions

diff --git a/llvm/lib/Target/X86/X86JITInfo.cpp b/llvm/lib/Target/X86/X86JITInfo.cpp
index 7b3a0703277..f8761dc87e2 100644
--- a/llvm/lib/Target/X86/X86JITInfo.cpp
+++ b/llvm/lib/Target/X86/X86JITInfo.cpp
@@ -518,3 +518,13 @@ void X86JITInfo::relocate(void *Function, MachineRelocation *MR,
     }
   }
 }
+
+char* X86JITInfo::allocateThreadLocalMemory(size_t size) {
+#if defined(X86_32_JIT) && !defined(__APPLE__) && !defined(_MSC_VER)
+  TLSOffset -= size;
+  return TLSOffset;
+#else
+  assert(0 && "Cannot allocate thread local storage on this arch!\n");
+  return 0;
+#endif
+}