[Backend] Keep call site info valid through the backend

Handle call instruction replacements and deletions in order to preserve
valid state of the call site info of the MachineFunction.

NOTE: If the call site info is enabled for a new target, the assertion from
the MachineFunction::DeleteMachineInstr() should help to locate places
where the updateCallSiteInfo() should be called in order to preserve valid
state of the call site info.

([10/13] Introduce the debug entry values.)

Co-authored-by: Ananth Sowda <asowda@cisco.com>
Co-authored-by: Nikola Prica <nikola.prica@rt-rk.com>
Co-authored-by: Ivan Baev <ibaev@cisco.com>

Differential Revision: https://reviews.llvm.org/D61062

llvm-svn: 364536
diff --git a/llvm/lib/CodeGen/InlineSpiller.cpp b/llvm/lib/CodeGen/InlineSpiller.cpp
index 9ed524e..d59016b 100644
--- a/llvm/lib/CodeGen/InlineSpiller.cpp
+++ b/llvm/lib/CodeGen/InlineSpiller.cpp
@@ -868,6 +868,8 @@
       HSpiller.rmFromMergeableSpills(*MI, FI))
     --NumSpills;
   LIS.ReplaceMachineInstrInMaps(*MI, *FoldMI);
+  if (MI->isCall())
+    MI->getMF()->updateCallSiteInfo(MI, FoldMI);
   MI->eraseFromParent();
 
   // Insert any new instructions other than FoldMI into the LIS maps.