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We want to store method info for unused functions. 

llvm-svn: 97333
This commit is contained in:
Anders Carlsson 2010-02-27 18:09:40 +00:00
parent ec27c49d6c
commit 01d3c7da60
1 changed files with 20 additions and 10 deletions
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30
clang/lib/CodeGen/CGVtable.cpp
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@ -1314,6 +1314,13 @@ void VtableBuilder::ComputeThisAdjustments() {
if (Overrider.BaseOffset == MethodInfo.BaseOffset)
continue;
uint64_t VtableIndex = MethodInfo.VtableIndex;
// Ignore this adjustments for unused function pointers.
if (Components[VtableIndex].getKind() ==
VtableComponent::CK_UnusedFunctionPointer)
continue;
BaseSubobject OverriderBaseSubobject(Overrider.Method->getParent(),
Overrider.BaseOffset);
@ -1326,11 +1333,12 @@ void VtableBuilder::ComputeThisAdjustments() {
ThisAdjustment ThisAdjustment = ComputeThisAdjustment(Overrider.Method,
ThisAdjustmentOffset);
ThisAdjustments.push_back(std::make_pair(MethodInfo.VtableIndex,
ThisAdjustment));
// Add it.
ThisAdjustments.push_back(std::make_pair(VtableIndex, ThisAdjustment));
if (isa<CXXDestructorDecl>(MD)) {
// Add an adjustment for the deleting destructor as well.
ThisAdjustments.push_back(std::make_pair(MethodInfo.VtableIndex + 1,
ThisAdjustments.push_back(std::make_pair(VtableIndex + 1,
ThisAdjustment));
}
}
@ -1493,6 +1501,8 @@ VtableBuilder::IsOverriderUsed(BaseSubobject Base,
assert(Layout.getBaseClassOffset(PrimaryBase) == 0 &&
"Primary base should always be at offset 0!");
}
RD = PrimaryBase;
}
// If the final overrider is an override of one of the primary bases,
@ -1591,19 +1601,19 @@ VtableBuilder::AddMethods(BaseSubobject Base,
}
}
// Check if this overrider is going to be used.
if (!IsOverriderUsed(Base, FirstBaseInPrimaryBaseChain, Overrider)) {
const CXXMethodDecl *OverriderMD = Overrider.Method;
Components.push_back(VtableComponent::MakeUnusedFunction(OverriderMD));
continue;
}
// Insert the method info for this method.
MethodInfo MethodInfo(Base.getBaseOffset(), Components.size());
assert(!MethodInfoMap.count(MD) &&
"Should not have method info for this method yet!");
MethodInfoMap.insert(std::make_pair(MD, MethodInfo));
// Check if this overrider is going to be used.
if (!IsOverriderUsed(Base, FirstBaseInPrimaryBaseChain, Overrider)) {
const CXXMethodDecl *OverriderMD = Overrider.Method;
Components.push_back(VtableComponent::MakeUnusedFunction(OverriderMD));
continue;
}
// Check if this overrider needs a return adjustment.
BaseOffset ReturnAdjustmentOffset =