CodeGen: Default overflow operations to expand so we don't have to assume targets...

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: ab
Differential Revision: http://reviews.llvm.org/D9265

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236119 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 14a691b75f06fbcbd905e543933596824b7968ee..9157bf32b2cc4b7ef40b893e5857753307ec98e4 100644 (file)
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -1245,12 +1245,6 @@ void SelectionDAGLegalize::LegalizeOp(SDNode *Node) {
     break;
   case ISD::EXTRACT_ELEMENT:
   case ISD::FLT_ROUNDS_:
-  case ISD::SADDO:
-  case ISD::SSUBO:
-  case ISD::UADDO:
-  case ISD::USUBO:
-  case ISD::SMULO:
-  case ISD::UMULO:
   case ISD::FPOWI:
   case ISD::MERGE_VALUES:
   case ISD::EH_RETURN:

diff --git a/lib/CodeGen/TargetLoweringBase.cpp b/lib/CodeGen/TargetLoweringBase.cpp
index 8eb64643f137b3ec55f1364399d0939bc8debac8..4dd279ede0dc5601b91feece915d5f8c6124ef5b 100644 (file)
--- a/lib/CodeGen/TargetLoweringBase.cpp
+++ b/lib/CodeGen/TargetLoweringBase.cpp
@@ -804,6 +804,14 @@ void TargetLoweringBase::initActions() {
     setOperationAction(ISD::FMAXNUM, VT, Expand);
     setOperationAction(ISD::FMAD, VT, Expand);
 
+    // Overflow operations default to expand
+    setOperationAction(ISD::SADDO, VT, Expand);
+    setOperationAction(ISD::SSUBO, VT, Expand);
+    setOperationAction(ISD::UADDO, VT, Expand);
+    setOperationAction(ISD::USUBO, VT, Expand);
+    setOperationAction(ISD::SMULO, VT, Expand);
+    setOperationAction(ISD::UMULO, VT, Expand);
+
     // These library functions default to expand.
     setOperationAction(ISD::FROUND, VT, Expand);