Add the sentinal "no handle" value to the ResumeInst.

A value of -1 at a call site tells the personality function that this call isn't
handled by the current function. Since the ResumeInsts are converted to calls to
_Unwind_SjLj_Resume, add a (volatile) store of -1 to its 'call site'.

llvm-svn: 138416

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SjLjEHPrepare.cpp b/llvm/lib/CodeGen/SjLjEHPrepare.cpp
index be491b13834..ebed3d2b882 100644
--- a/llvm/lib/CodeGen/SjLjEHPrepare.cpp
+++ b/llvm/lib/CodeGen/SjLjEHPrepare.cpp
@@ -631,6 +631,8 @@ bool SjLjEHPass::insertSjLjEHSupport(Function &F) {
         if (Callee != SelectorFn && Callee != ExceptionFn
             && !CI->doesNotThrow())
           insertCallSiteStore(CI, -1, CallSite);
+      } else if (ResumeInst *RI = dyn_cast<ResumeInst>(I)) {
+        insertCallSiteStore(RI, -1, CallSite);
       }
   }