AsmPrinter: Suppress warnings on GCC from r238362, NFC

GCC seems to have some overzealous warnings about strict aliasing.
Rafael reports that this patch suppresses them on GCC 4.9, and I'm
hoping this will work for GCC 4.7 as well.  I'll watch [1] and iterate
if necessary.

[1]: http://bb.pgr.jp/builders/clang-3stage-x86_64-linux/builds/8597

llvm-svn: 238447

diff --git a/llvm/include/llvm/CodeGen/DIE.h b/llvm/include/llvm/CodeGen/DIE.h
index c843f3f..e247d46 100644 (file)
--- a/llvm/include/llvm/CodeGen/DIE.h
+++ b/llvm/include/llvm/CodeGen/DIE.h
@@ -340,11 +340,11 @@ private:
     new (reinterpret_cast<void *>(Val.buffer)) T(V);
   }
 
-  template <class T> T &get() { return *reinterpret_cast<T *>(Val.buffer); }
-  template <class T> const T &get() const {
-    return *reinterpret_cast<const T *>(Val.buffer);
+  template <class T> T *get() { return reinterpret_cast<T *>(Val.buffer); }
+  template <class T> const T *get() const {
+    return reinterpret_cast<const T *>(Val.buffer);
   }
-  template <class T> void destruct() { get<T>().~T(); }
+  template <class T> void destruct() { get<T>()->~T(); }
 
   /// Destroy the underlying value.
   ///
@@ -378,11 +378,11 @@ private:
       return;
 #define HANDLE_DIEVALUE_SMALL(T)                                               \
   case is##T:                                                                  \
-    construct<DIE##T>(X.get<DIE##T>());                                        \
+    construct<DIE##T>(*X.get<DIE##T>());                                       \
     return;
 #define HANDLE_DIEVALUE_LARGE(T)                                               \
   case is##T:                                                                  \
-    construct<const DIE##T *>(X.get<const DIE##T *>());                        \
+    construct<const DIE##T *>(*X.get<const DIE##T *>());                       \
     return;
 #include "llvm/CodeGen/DIEValue.def"
     }
@@ -425,12 +425,12 @@ public:
 #define HANDLE_DIEVALUE_SMALL(T)                                               \
   const DIE##T &getDIE##T() const {                                            \
     assert(getType() == is##T && "Expected " #T);                              \
-    return get<DIE##T>();                                                      \
+    return *get<DIE##T>();                                                     \
   }
 #define HANDLE_DIEVALUE_LARGE(T)                                               \
   const DIE##T &getDIE##T() const {                                            \
     assert(getType() == is##T && "Expected " #T);                              \
-    return *get<const DIE##T *>();                                             \
+    return **get<const DIE##T *>();                                            \
   }
 #include "llvm/CodeGen/DIEValue.def"