Support alignment for NEON vld-lane and vst-lane instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116776 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp
index 4485da4..aa65a48 100644
--- a/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -1298,6 +1298,17 @@
EVT VT = IsLoad ? N->getValueType(0) : N->getOperand(3).getValueType();
bool is64BitVector = VT.is64BitVector();
+ if (NumVecs != 3) {
+ unsigned Alignment = cast<MemIntrinsicSDNode>(N)->getAlignment();
+ unsigned NumBytes = NumVecs * VT.getVectorElementType().getSizeInBits()/8;
+ if (Alignment > NumBytes)
+ Alignment = NumBytes;
+ // Alignment must be a power of two; make sure of that.
+ Alignment = (Alignment & -Alignment);
+ if (Alignment > 1)
+ Align = CurDAG->getTargetConstant(Alignment, MVT::i32);
+ }
+
unsigned OpcodeIndex;
switch (VT.getSimpleVT().SimpleTy) {
default: llvm_unreachable("unhandled vld/vst lane type");