Fix behavior of __builtin_bit_cast when the From and To types are the

same.

We were missing the lvalue-to-rvalue conversion entirely in this case,
and in fact still need the full CK_LValueToRValueBitCast conversion to
perform a load with no TBAA.

llvm-svn: 373874

1 files changed, 0 insertions, 5 deletions

diff --git a/clang/lib/Sema/SemaCast.cpp b/clang/lib/Sema/SemaCast.cpp
index 71e5e8e4286..8c6abc448d9 100644
--- a/clang/lib/Sema/SemaCast.cpp
+++ b/clang/lib/Sema/SemaCast.cpp
@@ -2835,11 +2835,6 @@ void CastOperation::CheckBuiltinBitCast() {
     return;
   }
 
-  if (Self.Context.hasSameUnqualifiedType(DestType, SrcType)) {
-    Kind = CK_NoOp;
-    return;
-  }
-
   Kind = CK_LValueToRValueBitCast;
 }