Add sub/mul overflow intrinsics. This currently doesn't have a
target-independent way of determining overflow on multiplication. It's very
tricky. Patch by Zoltan Varga!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60800 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 979dea0..bb3b42c 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1511,6 +1511,10 @@
return;
case ISD::SADDO:
case ISD::UADDO:
+ case ISD::SSUBO:
+ case ISD::USUBO:
+ case ISD::SMULO:
+ case ISD::UMULO:
if (Op.getResNo() != 1)
return;
// The boolean result conforms to getBooleanContents. Fall through.
@@ -1919,6 +1923,10 @@
case ISD::SADDO:
case ISD::UADDO:
+ case ISD::SSUBO:
+ case ISD::USUBO:
+ case ISD::SMULO:
+ case ISD::UMULO:
if (Op.getResNo() != 1)
break;
// The boolean result conforms to getBooleanContents. Fall through.
@@ -5216,6 +5224,10 @@
case ISD::ADDE: return "adde";
case ISD::SADDO: return "saddo";
case ISD::UADDO: return "uaddo";
+ case ISD::SSUBO: return "ssubo";
+ case ISD::USUBO: return "usubo";
+ case ISD::SMULO: return "smulo";
+ case ISD::UMULO: return "umulo";
case ISD::SUBC: return "subc";
case ISD::SUBE: return "sube";
case ISD::SHL_PARTS: return "shl_parts";