Fix a bug in GlobalOpt's handling of DIExpressions.

This patch adds support for fragment expressions
TryToShrinkGlobalToBoolean() which were previously just dropped.

Thanks to Reid Kleckner for providing me a reproducer!

llvm-svn: 331086

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/IR/DebugInfoMetadata.cpp b/llvm/lib/IR/DebugInfoMetadata.cpp
index fe57aa7442a..f1ad72d7327 100644
--- a/llvm/lib/IR/DebugInfoMetadata.cpp
+++ b/llvm/lib/IR/DebugInfoMetadata.cpp
@@ -785,12 +785,12 @@ DIExpression *DIExpression::prepend(const DIExpression *Expr, bool DerefBefore,
   if (DerefAfter)
     Ops.push_back(dwarf::DW_OP_deref);
 
-  return doPrepend(Expr, Ops, StackValue);
+  return prependOpcodes(Expr, Ops, StackValue);
 }
 
-DIExpression *DIExpression::doPrepend(const DIExpression *Expr,
-                                      SmallVectorImpl<uint64_t> &Ops,
-                                      bool StackValue) {
+DIExpression *DIExpression::prependOpcodes(const DIExpression *Expr,
+                                           SmallVectorImpl<uint64_t> &Ops,
+                                           bool StackValue) {
   if (Expr)
     for (auto Op : Expr->expr_ops()) {
       // A DW_OP_stack_value comes at the end, but before a DW_OP_LLVM_fragment.