From: Krzysztof Parzyszek <kparzysz@codeaurora.org>
Date: Mon, 13 Apr 2015 20:37:01 +0000 (+0000)
Subject: Expand ADDO/SUBO on Hexagon
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=57ea789c3e1fb4f5e4a2fe4d7e9fb356d571247d;p=oota-llvm.git

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 3e754900f48..63900e02042 100644
--- 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);