Comment

2025-08-18 12:13:45 +02:00 · 2025-08-18 12:13:45 +02:00 · d39acfa3ba
commit d39acfa3ba
parent b0fb6a7e2b
1 changed files with 2 additions and 0 deletions
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@ -7983,6 +7983,8 @@ void SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I,
                                       I.getArgOperand(Idx)->getType());
      Arg.setAttributes(&I, Idx);

+      // If we have an explicit sret argument that is an Instruction, (i.e., it
+      // might point to function-local memory), we can't meaningfully tail-call.
      if (Arg.IsSRet && isa<Instruction>(I.getArgOperand(Idx)))
        isTailCall = false;