Index: llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
===================================================================
--- llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
+++ llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
@@ -355,16 +355,6 @@
                        "unable to legalize instruction", *Result.FailedOn);
     return false;
   }
-  // For now don't support if new blocks are inserted - we would need to fix the
-  // outer loop for that.
-  if (MF.size() != NumBlocks) {
-    MachineOptimizationRemarkMissed R("gisel-legalize", "GISelFailure",
-                                      MF.getFunction().getSubprogram(),
-                                      /*MBB=*/nullptr);
-    R << "inserting blocks is not supported yet";
-    reportGISelFailure(MF, TPC, MORE, R);
-    return false;
-  }
 
   if (LocObserver.getNumLostDebugLocs()) {
     MachineOptimizationRemarkMissed R("gisel-legalize", "LostDebugLoc",