[AsmPrinter] .addrsig_sym: remove isTransitiveUsedByMetadataOnly

With D135642 ignoring unregistered symbols, isTransitiveUsedByMetadataOnly added
by D101512 is no longer needed (the operation is potentially slow). There is a
`.addrsig_sym` directive for an only-used-by-metadata symbol but it does not
emit an entry.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D138362

1 files changed, 0 insertions, 16 deletions

diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp
index 0fc7f5f..4faf1ab 100644
--- a/llvm/lib/IR/Value.cpp
+++ b/llvm/lib/IR/Value.cpp
@@ -1022,22 +1022,6 @@ bool Value::isSwiftError() const {
   return Alloca->isSwiftError();
 }
 
-bool Value::isTransitiveUsedByMetadataOnly() const {
-  SmallVector<const User *, 32> WorkList(user_begin(), user_end());
-  SmallPtrSet<const User *, 32> Visited(user_begin(), user_end());
-  while (!WorkList.empty()) {
-    const User *U = WorkList.pop_back_val();
-    // If it is transitively used by a global value or a non-constant value,
-    // it's obviously not only used by metadata.
-    if (!isa<Constant>(U) || isa<GlobalValue>(U))
-      return false;
-    for (const User *UU : U->users())
-      if (Visited.insert(UU).second)
-        WorkList.push_back(UU);
-  }
-  return true;
-}
-
 //===----------------------------------------------------------------------===//
 //                             ValueHandleBase Class
 //===----------------------------------------------------------------------===//