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Truncate the arguments of llvm.frameaddress / llvm.returnaddress intrinsics from i32 to platform's largest native type

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90741 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2009-12-07 02:28:26 +00:00
parent 06ccca5f70
commit 1c3436a67a
2 changed files with 13 additions and 1 deletions
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13
lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
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@ -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);

1
lib/CodeGen/SelectionDAG/LegalizeTypes.h
View File

@ -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);