[DebugInfo][RemoveDIs] Remove a swathe of debug-intrinsic code (#144389)

Seeing how we can't generate any debug intrinsics any more: delete a
variety of codepaths where they're handled. For the most part these are
plain deletions, in others I've tweaked comments to remain coherent, or
added a type to (what was) type-generic-lambdas.

This isn't all the DbgInfoIntrinsic call sites but it's most of the
simple scenarios.

Co-authored-by: Nikita Popov <github@npopov.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 4f548cb..ec0c547 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -1320,10 +1320,7 @@ void SelectionDAGBuilder::visit(const Instruction &I) {
     HandlePHINodesInSuccessorBlocks(I.getParent());
   }
 
-  // Increase the SDNodeOrder if dealing with a non-debug instruction.
-  if (!isa<DbgInfoIntrinsic>(I))
-    ++SDNodeOrder;
-
+  ++SDNodeOrder;
   CurInst = &I;
 
   // Set inserted listener only if required.