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RemoteAST: implement getOffsetOfMember for structs and classes.

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This commit is contained in:
John McCall
2016-04-28 16:28:49 -07:00
parent c875d15a75
commit f33c84fb3d
11 changed files with 584 additions and 27 deletions
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41
lib/IRGen/GenClass.cpp
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@@ -47,6 +47,8 @@
#include "IRGenModule.h"
#include "GenHeap.h"
#include "HeapTypeInfo.h"
#include "Linking.h"
#include "MemberAccessStrategy.h"
using namespace swift;
@@ -479,6 +481,45 @@ OwnedAddress irgen::projectPhysicalClassMemberAddress(IRGenFunction &IGF,
llvm_unreachable("bad field-access strategy");
}
MemberAccessStrategy
irgen::getPhysicalClassMemberAccessStrategy(IRGenModule &IGM,
SILType baseType, VarDecl *field) {
auto &baseClassTI = IGM.getTypeInfo(baseType).as<ClassTypeInfo>();
ClassDecl *baseClass = baseType.getClassOrBoundGenericClass();
auto &classLayout = baseClassTI.getClassLayout(IGM);
unsigned fieldIndex = classLayout.getFieldIndex(field);
switch (classLayout.AllFieldAccesses[fieldIndex]) {
case FieldAccess::ConstantDirect: {
auto &element = baseClassTI.getElements(IGM)[fieldIndex];
return MemberAccessStrategy::getDirectFixed(element.getByteOffset());
}
case FieldAccess::NonConstantDirect: {
std::string symbol =
LinkEntity::forFieldOffset(field, /*indirect*/ false).mangleAsString();
return MemberAccessStrategy::getDirectGlobal(std::move(symbol),
MemberAccessStrategy::OffsetKind::Bytes_Word);
}
case FieldAccess::ConstantIndirect: {
Size indirectOffset = getClassFieldOffset(IGM, baseClass, field);
return MemberAccessStrategy::getIndirectFixed(indirectOffset,
MemberAccessStrategy::OffsetKind::Bytes_Word);
}
case FieldAccess::NonConstantIndirect: {
std::string symbol =
LinkEntity::forFieldOffset(field, /*indirect*/ true).mangleAsString();
return MemberAccessStrategy::getIndirectGlobal(std::move(symbol),
MemberAccessStrategy::OffsetKind::Bytes_Word,
MemberAccessStrategy::OffsetKind::Bytes_Word);
}
}
llvm_unreachable("bad field-access strategy");
}
/// Emit an allocation of a class.
llvm::Value *irgen::emitClassAllocation(IRGenFunction &IGF, SILType selfType,
bool objc, int &StackAllocSize) {