Revert "[DLCov] Implement DebugLoc coverage tracking (#107279)"

This reverts commit a9d93ecf1f8d2cfe3f77851e0df179b386cff353.

Reverted due to the commit including a config in LLVM headers that is not
available outside of the llvm source tree.

1 files changed, 0 insertions, 16 deletions

diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index cafc703..f7eb853 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -961,22 +961,6 @@ void EmitAssemblyHelper::RunOptimizationPipeline(
       Debugify.setOrigDIVerifyBugsReportFilePath(
           CodeGenOpts.DIBugsReportFilePath);
     Debugify.registerCallbacks(PIC, MAM);
-
-#if ENABLE_DEBUGLOC_COVERAGE_TRACKING
-    // If we're using debug location coverage tracking, mark all the
-    // instructions coming out of the frontend without a DebugLoc as being
-    // compiler-generated, to prevent both those instructions and new
-    // instructions that inherit their location from being treated as
-    // incorrectly empty locations.
-    for (Function &F : *TheModule) {
-      if (!F.getSubprogram())
-        continue;
-      for (BasicBlock &BB : F)
-        for (Instruction &I : BB)
-          if (!I.getDebugLoc())
-            I.setDebugLoc(DebugLoc::getCompilerGenerated());
-    }
-#endif
   }
   // Attempt to load pass plugins and register their callbacks with PB.
   for (auto &PluginFN : CodeGenOpts.PassPlugins) {