From 1c3436a67afcfaee5f972836ff1ffff2985adce1 Mon Sep 17 00:00:00 2001 From: Anton Korobeynikov Date: Mon, 7 Dec 2009 02:28:26 +0000 Subject: [PATCH] Truncate the arguments of llvm.frameaddress / llvm.returnaddress intrinsics from i32 to platform's largest native type git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90741 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp | 13 ++++++++++++- lib/CodeGen/SelectionDAG/LegalizeTypes.h | 1 + 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp index 618135bc55d..2f4457e41fc 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp @@ -1996,7 +1996,9 @@ bool DAGTypeLegalizer::ExpandIntegerOperand(SDNode *N, unsigned OpNo) { case ISD::SRA: case ISD::SRL: case ISD::ROTL: - case ISD::ROTR: Res = ExpandIntOp_Shift(N); break; + case ISD::ROTR: Res = ExpandIntOp_Shift(N); break; + case ISD::RETURNADDR: + case ISD::FRAMEADDR: Res = ExpandIntOp_RETURNADDR(N); break; } // If the result is null, the sub-method took care of registering results etc. @@ -2180,6 +2182,15 @@ SDValue DAGTypeLegalizer::ExpandIntOp_Shift(SDNode *N) { return DAG.UpdateNodeOperands(SDValue(N, 0), N->getOperand(0), Lo); } +SDValue DAGTypeLegalizer::ExpandIntOp_RETURNADDR(SDNode *N) { + // The argument of RETURNADDR / FRAMEADDR builtin is 32 bit contant. This + // surely makes pretty nice problems on 8/16 bit targets. Just truncate this + // constant to valid type. + SDValue Lo, Hi; + GetExpandedInteger(N->getOperand(0), Lo, Hi); + return DAG.UpdateNodeOperands(SDValue(N, 0), Lo); +} + SDValue DAGTypeLegalizer::ExpandIntOp_SINT_TO_FP(SDNode *N) { SDValue Op = N->getOperand(0); EVT DstVT = N->getValueType(0); diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h index 2ee9f8a42ed..15a84cc6f3d 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h +++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h @@ -362,6 +362,7 @@ private: SDValue ExpandIntOp_STORE(StoreSDNode *N, unsigned OpNo); SDValue ExpandIntOp_TRUNCATE(SDNode *N); SDValue ExpandIntOp_UINT_TO_FP(SDNode *N); + SDValue ExpandIntOp_RETURNADDR(SDNode *N); void IntegerExpandSetCCOperands(SDValue &NewLHS, SDValue &NewRHS, ISD::CondCode &CCCode, DebugLoc dl); -- 2.34.1