[llvm] r236119 - CodeGen: Default overflow operations to expand so we don't have to assume targets are lying

[Jan Vesely]

Author: jvesely
Date: Wed Apr 29 11:30:46 2015
New Revision: 236119

URL: http://llvm.org/viewvc/llvm-project?rev=236119&view=rev
Log:
CodeGen: Default overflow operations to expand so we don't have to assume targets are lying

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

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
    llvm/trunk/lib/CodeGen/TargetLoweringBase.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=236119&r1=236118&r2=236119&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Wed Apr 29 11:30:46 2015
@@ -1245,12 +1245,6 @@ void SelectionDAGLegalize::LegalizeOp(SD
     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:

Modified: llvm/trunk/lib/CodeGen/TargetLoweringBase.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/TargetLoweringBase.cpp?rev=236119&r1=236118&r2=236119&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/TargetLoweringBase.cpp (original)
+++ llvm/trunk/lib/CodeGen/TargetLoweringBase.cpp Wed Apr 29 11:30:46 2015
@@ -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);