Fixed a bug in the IR transformer where we were

trying to do replaceUsesOfWith on a constant,
which doesn't work.  Turns out we don't need to
do anything for constants.

llvm-svn: 109477

1 files changed, 10 insertions, 1 deletions

diff --git a/lldb/source/Expression/IRForTarget.cpp b/lldb/source/Expression/IRForTarget.cpp
index e201117338b..ce28a8f362c 100644
--- a/lldb/source/Expression/IRForTarget.cpp
+++ b/lldb/source/Expression/IRForTarget.cpp
@@ -186,7 +186,16 @@ static void TurnGuardLoadIntoZero(Instruction* guard_load, Module &M)
     for (ui = guard_load->use_begin();
          ui != guard_load->use_end();
          ++ui)
-        ui->replaceUsesOfWith(guard_load, zero);
+    {
+        if (isa<Constant>(ui))
+        {
+            // do nothing for the moment
+        }
+        else
+        {
+            ui->replaceUsesOfWith(guard_load, zero);
+        }
+    }
     
     guard_load->eraseFromParent();
 }