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

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

llvm-svn: 236119
This commit is contained in:
Jan Vesely 2015-04-29 16:30:46 +00:00
parent cca29e8f6e
commit 7539548738
2 changed files with 8 additions and 6 deletions
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6
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -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:

8
llvm/lib/CodeGen/TargetLoweringBase.cpp
View File

@ -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);