diff options
Diffstat (limited to 'clang/lib/CodeGen/CodeGenTBAA.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenTBAA.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/CodeGenTBAA.cpp b/clang/lib/CodeGen/CodeGenTBAA.cpp index a1e14c5..837bf72 100644 --- a/clang/lib/CodeGen/CodeGenTBAA.cpp +++ b/clang/lib/CodeGen/CodeGenTBAA.cpp @@ -22,6 +22,7 @@ #include "clang/AST/Mangle.h" #include "clang/AST/RecordLayout.h" #include "clang/Basic/CodeGenOptions.h" +#include "clang/Basic/TargetInfo.h" #include "llvm/ADT/SmallSet.h" #include "llvm/IR/Constants.h" #include "llvm/IR/LLVMContext.h" @@ -319,7 +320,13 @@ CodeGenTBAA::CollectFields(uint64_t BaseOffset, // base type. if ((*i)->isBitField()) { const CGBitFieldInfo &Info = CGRL.getBitFieldInfo(*i); - if (Info.Offset != 0) + // For big endian targets the first bitfield in the consecutive run is + // at the most-significant end; see CGRecordLowering::setBitFieldInfo + // for more information. + bool IsBE = Context.getTargetInfo().isBigEndian(); + bool IsFirst = IsBE ? Info.StorageSize - (Info.Offset + Info.Size) == 0 + : Info.Offset == 0; + if (!IsFirst) continue; unsigned CurrentBitFieldSize = Info.StorageSize; uint64_t Size = |