Fix a bug in dead spill slot elimination.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47687 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/include/llvm/CodeGen/MachineFrameInfo.h b/include/llvm/CodeGen/MachineFrameInfo.h
index 4be3bd474e..3a0432510c 100644
--- a/include/llvm/CodeGen/MachineFrameInfo.h
+++ b/include/llvm/CodeGen/MachineFrameInfo.h
@@ -216,6 +216,8 @@ public:
   int64_t getObjectOffset(int ObjectIdx) const {
     assert(unsigned(ObjectIdx+NumFixedObjects) < Objects.size() &&
            "Invalid Object Idx!");
+    assert(!isDeadObjectIndex(ObjectIdx) &&
+           "Getting frame offset for a dead object?");
     return Objects[ObjectIdx+NumFixedObjects].SPOffset;
   }
 
@@ -225,6 +227,8 @@ public:
   void setObjectOffset(int ObjectIdx, int64_t SPOffset) {
     assert(unsigned(ObjectIdx+NumFixedObjects) < Objects.size() &&
            "Invalid Object Idx!");
+    assert(!isDeadObjectIndex(ObjectIdx) &&
+           "Setting frame offset for a dead object?");
     Objects[ObjectIdx+NumFixedObjects].SPOffset = SPOffset;
   }