[llvm] Add support for NSDI DebugLine and DebugNoLine. (PR #215851)

[Manuel Carrasco via llvm-commits]

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@@ -167,6 +171,16 @@ class SPIRVNonSemanticDebugHandler : public DebugHandlerBase {
 
   bool DebugFunctionDefinitionEmitted = false;
 
+  struct DebugLineState {
+    MCRegister SrcReg;
+    unsigned Line;
+    unsigned Col;
+  };
+  const MachineBasicBlock *CurLineMBB = nullptr;
+  std::optional<DebugLineState> CurLineState;
+
+  bool EmitDebugLineForCurrentFn = false;
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mgcarrasco wrote:

Thanks! Simplified it.

https://github.com/llvm/llvm-project/pull/215851