diff options
| author | Daniel Dunbar <daniel@zuster.org> | 2010-04-13 20:58:55 +0000 |
|---|---|---|
| committer | Daniel Dunbar <daniel@zuster.org> | 2010-04-13 20:58:55 +0000 |
| commit | ab970f90ce31a53fe7e6375a37536bf0832fd922 (patch) | |
| tree | dca72794ebe2bac936e3a1516ad07fc54112d899 /lib/CodeGen/CGObjCMac.cpp | |
| parent | 4895a8ca41352b9ce572cd64ffa93208898e7546 (diff) | |
IRgen: Enhance CGBitFieldInfo with enough information to fully describe the "policy" with which a bit-field should be accessed.
- For now, these policies are computed to match the current IRgen strategy, although the new information isn't being used yet (except in -fdump-record-layouts).
- Design comments appreciated.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101178 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CGObjCMac.cpp')
| -rw-r--r-- | lib/CodeGen/CGObjCMac.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp index 4713ac7ca2..8cd7cdbfe6 100644 --- a/lib/CodeGen/CGObjCMac.cpp +++ b/lib/CodeGen/CGObjCMac.cpp @@ -129,6 +129,17 @@ LValue CGObjCRuntime::EmitValueForIvarAtOffset(CodeGen::CodeGenFunction &CGF, new (CGF.CGM.getContext()) CGBitFieldInfo( LTy, FieldNo, BitOffset, BitFieldSize, IvarTy->isSignedIntegerType()); + // We always construct a single, possibly unaligned, access for this case. + Info->setNumComponents(1); + CGBitFieldInfo::AccessInfo &AI = Info->getComponent(0); + AI.FieldIndex = 0; + AI.FieldByteOffset = 0; + AI.FieldBitStart = BitOffset; + AI.AccessWidth = CGF.CGM.getContext().getTypeSize(IvarTy); + AI.AccessAlignment = 0; + AI.TargetBitOffset = 0; + AI.TargetBitWidth = BitFieldSize; + // FIXME: We need to set a very conservative alignment on this, or make sure // that the runtime is doing the right thing. return LValue::MakeBitfield(V, *Info, Quals.getCVRQualifiers()); |