Expand ADDO/SUBO on Hexagon

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234795 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Hexagon/HexagonISelLowering.cpp b/lib/Target/Hexagon/HexagonISelLowering.cpp
index 3e754900f48a0fdd2b75bdb8ee8ec90e1875a779..63900e02042638d06c4797f2638a1540b73af49f 100644 (file)
--- a/lib/Target/Hexagon/HexagonISelLowering.cpp
+++ b/lib/Target/Hexagon/HexagonISelLowering.cpp
@@ -1717,6 +1717,14 @@ HexagonTargetLowering::HexagonTargetLowering(const TargetMachine &TM,
   setOperationAction(ISD::SUBC, MVT::i32, Expand);
   setOperationAction(ISD::SUBC, MVT::i64, Expand);
 
+  // Only add and sub that detect overflow are the saturating ones.
+  for (MVT VT : MVT::integer_valuetypes()) {
+    setOperationAction(ISD::UADDO, VT, Expand);
+    setOperationAction(ISD::SADDO, VT, Expand);
+    setOperationAction(ISD::USUBO, VT, Expand);
+    setOperationAction(ISD::SSUBO, VT, Expand);
+  }
+
   setOperationAction(ISD::CTPOP, MVT::i32, Expand);
   setOperationAction(ISD::CTPOP, MVT::i64, Expand);
   setOperationAction(ISD::CTTZ, MVT::i32, Expand);