Work around an apparent GCC miscompilation by specializing different,

this fixes a regression on some compilers from r68147.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68356 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 0 deletions

diff --git a/include/llvm/Support/ValueHandle.h b/include/llvm/Support/ValueHandle.h
index 2771464..a668656 100644
--- a/include/llvm/Support/ValueHandle.h
+++ b/include/llvm/Support/ValueHandle.h
@@ -18,6 +18,18 @@
 #include "llvm/Value.h"
 
 namespace llvm {
+class ValueHandleBase;
+
+// ValueHandleBase** is only 4-byte aligned.
+template<>
+class PointerLikeTypeTraits<ValueHandleBase**> {
+public:
+  static inline void *getAsVoidPointer(ValueHandleBase** P) { return P; }
+  static inline ValueHandleBase **getFromVoidPointer(void *P) {
+    return static_cast<ValueHandleBase**>(P);
+  }
+  enum { NumLowBitsAvailable = 2 };
+};
 
 /// ValueHandleBase - This is the common base class of value handles.
 /// ValueHandle's are smart pointers to Value's that have special behavior when