diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 18d3a6d55a8..8d7c85ce936 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -2239,15 +2239,24 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { break; } } else { - // Truncating store - assert(isTypeLegal(ST->getValue().getValueType()) && - "Cannot handle illegal TRUNCSTORE yet!"); - Tmp3 = LegalizeOp(ST->getValue()); + switch (getTypeAction(ST->getValue().getValueType())) { + case Legal: + Tmp3 = LegalizeOp(ST->getValue()); + break; + case Promote: + // We can promote the value, the truncstore will still take care of it. + Tmp3 = PromoteOp(ST->getValue()); + break; + case Expand: + // Just store the low part. This may become a non-trunc store, so make + // sure to use getTruncStore, not UpdateNodeOperands below. + ExpandOp(ST->getValue(), Tmp3, Tmp4); + return DAG.getTruncStore(Tmp1, Tmp3, Tmp2, ST->getSrcValue(), + SVOffset, MVT::i8, isVolatile, Alignment); + } - // The only promote case we handle is TRUNCSTORE:i1 X into - // -> TRUNCSTORE:i8 (and X, 1) - if (ST->getStoredVT() == MVT::i1 && - TLI.getStoreXAction(MVT::i1) == TargetLowering::Promote) { + // Unconditionally promote TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) + if (ST->getStoredVT() == MVT::i1) { // Promote the bool to a mask then store. Tmp3 = DAG.getNode(ISD::AND, Tmp3.getValueType(), Tmp3, DAG.getConstant(1, Tmp3.getValueType())); @@ -2261,7 +2270,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { } MVT::ValueType StVT = cast<StoreSDNode>(Result.Val)->getStoredVT(); - switch (TLI.getStoreXAction(StVT)) { + switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { default: assert(0 && "This action is not supported yet!"); case TargetLowering::Legal: // If this is an unaligned store and the target doesn't support it, @@ -2275,8 +2284,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { } break; case TargetLowering::Custom: - Tmp1 = TLI.LowerOperation(Result, DAG); - if (Tmp1.Val) Result = Tmp1; + Result = TLI.LowerOperation(Result, DAG); break; } } |
