diff options
| author | Fariborz Jahanian <fjahanian@apple.com> | 2010-09-09 00:21:45 +0000 |
|---|---|---|
| committer | Fariborz Jahanian <fjahanian@apple.com> | 2010-09-09 00:21:45 +0000 |
| commit | cfddabf5a308ad414e69d439ec230f6bfc07351d (patch) | |
| tree | 772a248af4c422039842c0c417f5df26f69ab26d /clang/lib/CodeGen | |
| parent | 3cf63f1eddc12c5f6a164f82d22b8c6755778bd3 (diff) | |
| download | bcm5719-llvm-cfddabf5a308ad414e69d439ec230f6bfc07351d.tar.gz bcm5719-llvm-cfddabf5a308ad414e69d439ec230f6bfc07351d.zip | |
Block ivar layout must assume that the 'isa'
field of the block descriptor is GC'able (scanned)
as this what the runtime expects (one can send it
messages). Radar 8394947.
llvm-svn: 113454
Diffstat (limited to 'clang/lib/CodeGen')
| -rw-r--r-- | clang/lib/CodeGen/CGObjCMac.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGObjCMac.cpp b/clang/lib/CodeGen/CGObjCMac.cpp index 9bd1d661e7d..82541356863 100644 --- a/clang/lib/CodeGen/CGObjCMac.cpp +++ b/clang/lib/CodeGen/CGObjCMac.cpp @@ -1675,6 +1675,9 @@ llvm::Constant *CGObjCCommonMac::GCBlockLayout(CodeGen::CodeGenFunction &CGF, unsigned WordSizeInBits = CGM.getContext().Target.getPointerWidth(0); unsigned ByteSizeInBits = CGM.getContext().Target.getCharWidth(); + // __isa is the first field in block descriptor and must assume by runtime's + // convention that it is GC'able. + IvarsInfo.push_back(GC_IVAR(0, 1)); for (size_t i = 0; i < DeclRefs.size(); ++i) { const BlockDeclRefExpr *BDRE = DeclRefs[i]; const ValueDecl *VD = BDRE->getDecl(); |
