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Refine the non-virtual this adjustments for thunks by using the offset 

to the declaring class from the nearest virtual base class.  WIP.

llvm-svn: 94606
This commit is contained in:
Mike Stump 2010-01-26 22:44:01 +00:00
parent 3ba6da49f5
commit ded0a406b4
1 changed files with 6 additions and 0 deletions
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6
clang/lib/CodeGen/CGVtable.cpp
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@ -1114,6 +1114,12 @@ bool VtableBuilder::OverrideMethod(GlobalDecl GD, bool MorallyVirtual,
(int)VCalls[idx-1], MostDerivedClass->getNameAsCString()));
}
int64_t NonVirtualAdjustment = -VCallOffset[OGD];
QualType DerivedType = MD->getThisType(CGM.getContext());
QualType BaseType = cast<const CXXMethodDecl>(OGD.getDecl())->getThisType(CGM.getContext());
int64_t NonVirtualAdjustment2 = -(getNVOffset(BaseType, DerivedType)/8);
if (NonVirtualAdjustment2 != NonVirtualAdjustment) {
NonVirtualAdjustment = NonVirtualAdjustment2;
}
int64_t VirtualAdjustment =
-((idx + extra + 2) * LLVMPointerWidth / 8);