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[SIL] NFC: Simplify SILVTable and save 8 bytes per SILVTable

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We were not using the primary benefits of an intrusive list, namely the
ability to insert or remove from the middle of the list, so let's switch
to a plain vector. This also avoids linked-list pointer chasing.
This commit is contained in:
David Zarzycki
2020-06-08 10:42:04 -04:00
parent fe8893da96
commit 017ee7bf04
14 changed files with 53 additions and 58 deletions
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5
include/swift/SIL/SILVTable.h
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@@ -29,8 +29,6 @@
#include "swift/SIL/SILAllocated.h"
#include "swift/SIL/SILDeclRef.h"
#include "swift/SIL/SILFunction.h"
#include "llvm/ADT/ilist_node.h"
#include "llvm/ADT/ilist.h"
#include "llvm/ADT/Optional.h"
#include <algorithm>
@@ -44,8 +42,7 @@ class SILModule;
/// A mapping from each dynamically-dispatchable method of a class to the
/// SILFunction that implements the method for that class.
/// Note that dead methods are completely removed from the vtable.
class SILVTable : public llvm::ilist_node<SILVTable>,
public SILAllocated<SILVTable> {
class SILVTable : public SILAllocated<SILVTable> {
public:
// TODO: Entry should include substitutions needed to invoke an overridden
// generic base class method.