Pass a Banner argument to the machine code verifier both from
createMachineVerifierPass and MachineFunction::verify.

The banner is printed before the machine code dump, just like the printer pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122113 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocBasic.cpp b/lib/CodeGen/RegAllocBasic.cpp
index 85a3d7f..1175923 100644
--- a/lib/CodeGen/RegAllocBasic.cpp
+++ b/lib/CodeGen/RegAllocBasic.cpp
@@ -484,7 +484,7 @@
     // spiller. Always use -spiller=inline with -verify-regalloc. Even with the
     // inline spiller, some tests fail to verify because the coalescer does not
     // always generate verifiable code.
-    MF->verify(this);
+    MF->verify(this, "In RABasic::verify");
 
     // Verify that LiveIntervals are partitioned into unions and disjoint within
     // the unions.