If the alignment of the chosen field in a union is greater than the alignment of the union, we need to use a packed LLVM struct. Fixes <rdar://problem/7184250>.

llvm-svn: 80964

llvm-svn: 80808

llvm-svn: 79805

llvm-svn: 79799

llvm-svn: 78946

llvm-svn: 78490

Introduce a new PragmaPack attribute, and use it for #pragma pack. The PackedAttr now only represents __attribute__((packed)).

This is necessary because #pragma pack and __attribute__((packed)) have different semantics. No functionality change yet, but this lays the groundwork for fixing a record layout bug.

llvm-svn: 78483

llvm-svn: 78481

llvm-svn: 78259

llvm-svn: 78069

table as it has its own place now.

llvm-svn: 77491

llvm-svn: 77335

member access in the presense of non-virtual bases.

llvm-svn: 77246

Enable the new struct type builder now that the constant struct builder works. (The old code will still be there until we know that everything works well.

llvm-svn: 77190

llvm-svn: 77189

llvm-svn: 76969

llvm-svn: 76931

llvm-svn: 76907

llvm-svn: 76903

llvm-svn: 76898

We don't need to keep track of the packed alignment, just whether the struct is packed or not. Fixes PR4610.

llvm-svn: 76884

Move the LLVM field number for bit fields into the BitFieldInfo structure, since it's meaning is completely different than for non-bit fields.

llvm-svn: 76882

llvm-svn: 76856

llvm-svn: 76847

llvm-svn: 76846

Check in  CGRecordLayoutBuilder which is a reimplementation of the record layout code. (Yay, no more packed structs unless absolutely necessary). We currently don't use the layouts being built but that will change when the new code is mature enough :)

llvm-svn: 76845