[compiler-rt] [llvm] [MC/DC][Coverage] Introduce "Bitmap Bias" for continuous mode (PR #96126)

[Jessica Paquette via llvm-commits]

================
@@ -1014,18 +1014,22 @@ CallInst *InstrLowerer::getRMWOrCall(Value *Addr, Value *Val) {
 
 Value *InstrLowerer::getBitmapAddress(InstrProfMCDCTVBitmapUpdate *I) {
   auto *Bitmaps = getOrCreateRegionBitmaps(I);
-  IRBuilder<> Builder(I);
-
-  if (isRuntimeCounterRelocationEnabled()) {
-    LLVMContext &Ctx = M.getContext();
-    Ctx.diagnose(DiagnosticInfoPGOProfile(
-        M.getName().data(),
-        Twine("Runtime counter relocation is presently not supported for MC/DC "
-              "bitmaps."),
-        DS_Warning));
-  }
+  if (!isRuntimeCounterRelocationEnabled())
+    return Bitmaps;
 
-  return Bitmaps;
+  // Put BiasLI onto the entry block.
+  Type *Int64Ty = Type::getInt64Ty(M.getContext());
+  Function *Fn = I->getParent()->getParent();
----------------
ornata wrote:

nit: getFunction() ?

https://github.com/llvm/llvm-project/pull/96126