Windows TLS: Section name prefix to ensure correct order
The linker sorts the .tls$<xyz> sections by name, and we need
to make sure any extra sections we produce (e.g. for weak globals)
always end up between .tls$AAA and .tls$ZZZ, even if the name
starts with e.g. an underscore.
Patch by David Nadlinger!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177256 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 9a9ddc9..3bdca4c 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -742,8 +742,11 @@
return ".text$";
if (Kind.isBSS ())
return ".bss$";
- if (Kind.isThreadLocal())
- return ".tls$";
+ if (Kind.isThreadLocal()) {
+ // 'LLVM' is just an arbitary string to ensure that the section name gets
+ // sorted in between '.tls$AAA' and '.tls$ZZZ' by the linker.
+ return ".tls$LLVM";
+ }
if (Kind.isWriteable())
return ".data$";
return ".rdata$";
