diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCISelLowering.cpp')
-rw-r--r-- | lib/Target/PowerPC/PPCISelLowering.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp index a7e9d56fa9..741e25e200 100644 --- a/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/lib/Target/PowerPC/PPCISelLowering.cpp @@ -1183,13 +1183,15 @@ bool PPCTargetLowering::getPreIndexedAddressParts(SDNode *N, SDValue &Base, SDValue Ptr; EVT VT; + unsigned Alignment; if (LoadSDNode *LD = dyn_cast<LoadSDNode>(N)) { Ptr = LD->getBasePtr(); VT = LD->getMemoryVT(); - + Alignment = LD->getAlignment(); } else if (StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) { Ptr = ST->getBasePtr(); VT = ST->getMemoryVT(); + Alignment = ST->getAlignment(); } else return false; @@ -1208,6 +1210,10 @@ bool PPCTargetLowering::getPreIndexedAddressParts(SDNode *N, SDValue &Base, if (!SelectAddressRegImm(Ptr, Offset, Base, DAG)) return false; } else { + // LDU/STU need an address with at least 4-byte alignment. + if (Alignment < 4) + return false; + // reg + imm * 4. if (!SelectAddressRegImmShift(Ptr, Offset, Base, DAG)) return false; |