[llvm] [AMDGPU] Propagate debug locations to compiler-generated instructions (PR #168573)

[Matt Arsenault via llvm-commits]

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@@ -1754,8 +1754,8 @@ class ConstantSDNode : public SDNode {
   const ConstantInt *Value;
 
   ConstantSDNode(bool isTarget, bool isOpaque, const ConstantInt *val,
-                 SDVTList VTs)
-      : SDNode(isTarget ? ISD::TargetConstant : ISD::Constant, 0, DebugLoc(),
+                 SDVTList VTs, const DebugLoc &DL)
+      : SDNode(isTarget ? ISD::TargetConstant : ISD::Constant, 0, DL,
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arsenm wrote:

This is wholly unrelated from the changes in SIWholeQuadMode. I'm skeptical this is needed, especially without any tests. It should be remove from the patch and submitted separately if needed 

https://github.com/llvm/llvm-project/pull/168573