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Minor tweaks to call graph.

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Use the isPossiblyUsedExternally method of SILFunction, remove a
work-around for "main", and delete a big "how" comment that could easily
be made obsolete (and probably will soon).

Swift SVN r26983
This commit is contained in:
Mark Lacey
2015-04-04 19:00:48 +00:00
parent dd0cbf87fc
commit 3bcfaec662
1 changed files with 3 additions and 12 deletions
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15
include/swift/SILAnalysis/CallGraphAnalysis.h
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@@ -25,14 +25,8 @@
namespace swift {
inline bool canHaveIndirectUses(SILFunction *F) {
if (swift::isPossiblyUsedExternally(F->getLinkage(),
F->getModule().isWholeModule()))
return true;
// TODO: main is currently marked as internal so we explicitly check
// for functions with this name and keep them around.
if (F->getName() == SWIFT_ENTRY_POINT_FUNCTION)
static inline bool canHaveIndirectUses(SILFunction *F) {
if (F->isPossiblyUsedExternally())
return true;
// ObjC functions are called through the runtime and are therefore alive
@@ -148,10 +142,7 @@ class CallGraphNode {
/// This is owned by the callgraph itself, not the callgraph node.
llvm::SmallPtrSet<CallGraphEdge *, 4> CalleeEdges;
/// Do we know all the potential callers of this function? We initialize this
/// to !canHaveIndirectUses(F) optimistically and if we find any use that we
/// can not prove does not cause a reference to a function_ref to escape in a
/// we set this to false.
/// Do we know all the potential callers of this function?
bool CallerEdgesComplete;
public: