Global variables beginning with \01 have special meaning on Darwin, so we need to...

the name prefix when we change them from internal to external.  This allows bugpointing
of codegen miscompilations to work more reliably on Darwin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53236 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/bugpoint/ExtractFunction.cpp b/tools/bugpoint/ExtractFunction.cpp
index ca8a279153fe62321a058c6c8bf429496bc5fe99..776922aa5d43c32efb168e86a52aecd5bd0a6ca9 100644 (file)
--- a/tools/bugpoint/ExtractFunction.cpp
+++ b/tools/bugpoint/ExtractFunction.cpp
@@ -262,8 +262,11 @@ Module *llvm::SplitFunctionsOutOfModule(Module *M,
   for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
     I->setLinkage(GlobalValue::ExternalLinkage);
   for (Module::global_iterator I = M->global_begin(), E = M->global_end();
-       I != E; ++I)
+       I != E; ++I) {
+    if (I->hasName() && *I->getNameStart() == '\01')
+      I->setName(I->getNameStart()+1, I->getNameLen()-1);
     I->setLinkage(GlobalValue::ExternalLinkage);
+  }
 
   Module *New = CloneModule(M);