- update borrowed-from instruction and use borrowed-from in BorrowUtils

Author: eeckstein

SwiftCompilerSources/Sources/Optimizer/PassManager/PassRegistration.swift

@@ -117,6 +117,7 @@ private func registerSwiftPasses() {
   registerPass(rangeDumper, { rangeDumper.run($0) })
   registerPass(runUnitTests, { runUnitTests.run($0) })
   registerPass(testInstructionIteration, { testInstructionIteration.run($0) })
+  registerPass(updateBorrowedFromPass, { updateBorrowedFromPass.run($0) })
 }
 
 private func registerSwiftAnalyses() {
@@ -126,4 +127,5 @@ private func registerSwiftAnalyses() {
 
 private func registerUtilities() {
   registerVerifier()
+  registerBorrowedFromUpdater()
 }