Revert "Reland: [DWARF] Allow cross-CU references of subprogram definitions"

... as well as:
Revert "[DWARF] Defer creating declaration DIEs until we prepare call site info"

This reverts commit fa4701e1979553c2df61698ac1ac212627630442.

This reverts commit 79daafc90308787b52a5d3a7586e82acd5e374b3.

There have been reports of this assert getting hit:

CalleeDIE && "Could not find DIE for call site entry origin

(cherry picked from commit 802bec896171997a7b73dde3857712e0eedeabc1)

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 38011102c7b..e97bcd62e8c 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -968,8 +968,8 @@ DIE &DwarfCompileUnit::constructCallSiteEntryDIE(
     addAddress(CallSiteDIE, getDwarf5OrGNUAttr(dwarf::DW_AT_call_target),
                MachineLocation(CallReg));
   } else {
-    DIE *CalleeDIE = getDIE(CalleeSP);
-    assert(CalleeDIE && "Could not find DIE for call site entry origin");
+    DIE *CalleeDIE = getOrCreateSubprogramDIE(CalleeSP);
+    assert(CalleeDIE && "Could not create DIE for call site entry origin");
     addDIEEntry(CallSiteDIE, getDwarf5OrGNUAttr(dwarf::DW_AT_call_origin),
                 *CalleeDIE);
   }