https://github.com/arsenm created https://github.com/llvm/llvm-project/pull/170413
Also introduce an error if it's not available, which is not yet testable. >From b5ef5ed3e65584020a039a2fa8cd98c4d7ce31f9 Mon Sep 17 00:00:00 2001 From: Matt Arsenault <[email protected]> Date: Tue, 2 Dec 2025 21:03:00 -0500 Subject: [PATCH] DAG: Avoid using getLibcallName when looking for a divrem call Also introduce an error if it's not available, which is not yet testable. --- llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 99d14a60c6ed1..8336e1d1f4134 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -2381,8 +2381,19 @@ SelectionDAGLegalize::ExpandDivRemLibCall(SDNode *Node, Entry.IsZExt = !isSigned; Args.push_back(Entry); - SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), - TLI.getPointerTy(DAG.getDataLayout())); + RTLIB::LibcallImpl LibcallImpl = TLI.getLibcallImpl(LC); + if (LibcallImpl == RTLIB::Unsupported) { + DAG.getContext()->emitError(Twine("no libcall available for ") + + Node->getOperationName(&DAG)); + SDValue Poison = DAG.getPOISON(RetVT); + Results.push_back(Poison); + Results.push_back(Poison); + return; + } + + SDValue Callee = + DAG.getExternalSymbol(TLI.getLibcallImplName(LibcallImpl).data(), + TLI.getPointerTy(DAG.getDataLayout())); SDLoc dl(Node); TargetLowering::CallLoweringInfo CLI(DAG); _______________________________________________ llvm-branch-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
