Revert r331819 [GlobalISel][Legalizer] More concise and faster widenScalar, NFC

Reverting this to see if the clang-cmake-aarch64-global-isel and
clang-cmake-aarch64-quick bots are failing because of this commit

llvm-svn: 331839
diff --git a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
index a3bf45f..273044b 100644
--- a/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/MachineIRBuilder.cpp
@@ -53,11 +53,6 @@
   State.II = II;
 }
 
-void MachineIRBuilderBase::recordInsertion(MachineInstr *InsertedInstr) const {
-  if (State.InsertedInstr)
-    State.InsertedInstr(InsertedInstr);
-}
-
 void MachineIRBuilderBase::recordInsertions(
     std::function<void(MachineInstr *)> Inserted) {
   State.InsertedInstr = std::move(Inserted);
@@ -82,7 +77,8 @@
 
 MachineInstrBuilder MachineIRBuilderBase::insertInstr(MachineInstrBuilder MIB) {
   getMBB().insert(getInsertPt(), MIB);
-  recordInsertion(MIB);
+  if (State.InsertedInstr)
+    State.InsertedInstr(MIB);
   return MIB;
 }