Remove duplicate code that is possibly introduced during merging (#13)

mmtk · May 9, 2023 · 620cb79 · 620cb79
1 parent eb407eb
commit 620cb79
Showing 1 changed file with 0 additions and 23 deletions.
diff --git a/src/llvm-late-gc-lowering.cpp b/src/llvm-late-gc-lowering.cpp
@@ -2556,29 +2556,6 @@ bool LateLowerGCFrame::CleanupIR(Function &F, State *S, bool *CFGModified) {
         }
 #endif
 
-        auto parBits = builder.CreateAnd(EmitLoadTag(builder, parent), 3);
-        auto parOldMarked = builder.CreateICmpEQ(parBits, ConstantInt::get(T_size, 3));
-        auto mayTrigTerm = SplitBlockAndInsertIfThen(parOldMarked, CI, false);
-        builder.SetInsertPoint(mayTrigTerm);
-        Value *anyChldNotMarked = NULL;
-        for (unsigned i = 1; i < CI->arg_size(); i++) {
-            Value *child = CI->getArgOperand(i);
-            Value *chldBit = builder.CreateAnd(EmitLoadTag(builder, child), 1);
-            Value *chldNotMarked = builder.CreateICmpEQ(chldBit, ConstantInt::get(T_size, 0));
-            anyChldNotMarked = anyChldNotMarked ? builder.CreateOr(anyChldNotMarked, chldNotMarked) : chldNotMarked;
-        }
-        assert(anyChldNotMarked); // handled by all_of test above
-        MDBuilder MDB(parent->getContext());
-        SmallVector<uint32_t, 2> Weights{1, 9};
-        auto trigTerm = SplitBlockAndInsertIfThen(anyChldNotMarked, mayTrigTerm, false,
-                                                  MDB.createBranchWeights(Weights));
-        builder.SetInsertPoint(trigTerm);
-        if (CI->getCalledOperand() == write_barrier_func) {
-            builder.CreateCall(getOrDeclare(jl_intrinsics::queueGCRoot), parent);
-        }
-        else {
-            assert(false);
-        }
         CI->eraseFromParent();
     }
     if (maxframeargs == 0 && Frame) {