Rather than attempting to legalize 1 x float, make sure the SD ISel never
generates it. Make MVT::Vector expand-only, and remove the code in
Legalize that attempts to legalize it.
The plan for supporting N x Type is to continually epxand it in ExpandOp
until it gets down to 2 x Type, where it will be scalarized into a pair of
scalars.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24482 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index eaca703..8570e64 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -64,7 +64,7 @@
assert(VT < PromoteTo && "Must promote to a larger type!");
TransformToType[VT] = PromoteTo;
} else if (Action == TargetLowering::Expand) {
- assert(MVT::isInteger(VT) && VT > MVT::i8 &&
+ assert((VT == MVT::Vector || MVT::isInteger(VT)) && VT > MVT::i8 &&
"Cannot expand this type: target must support SOME integer reg!");
// Expand to the next smaller integer type!
TransformToType[VT] = (MVT::ValueType)(VT-1);
@@ -113,6 +113,10 @@
TransformToType, ValueTypeActions);
else
TransformToType[MVT::f32] = MVT::f32;
+
+ // Set MVT::Vector to always be Expanded
+ SetValueTypeAction(MVT::Vector, Expand, *this, TransformToType,
+ ValueTypeActions);
assert(isTypeLegal(MVT::f64) && "Target does not support FP?");
TransformToType[MVT::f64] = MVT::f64;