Add UADDO and SADDO nodes. These will be used for determining an overflow
condition in an addition operation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59760 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index 7567ecc..ef155d8 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -249,7 +249,14 @@
// to them to be chained together for add and sub of arbitrarily large
// values.
ADDE, SUBE,
-
+
+ // Overflow-aware nodes for arithmetic operations. These nodes take two
+ // operands: the normal lhs and rhs to the add. They produce two results:
+ // the normal result of the add, and a flag indicating whether an overflow
+ // occured. These nodes are generated from the llvm.[su]add.with.overflow
+ // intrinsics. They are lowered by target-dependent code.
+ SADDO, UADDO,
+
// Simple binary floating point operators.
FADD, FSUB, FMUL, FDIV, FREM,
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 61a04bf..d22a65d 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5151,6 +5151,8 @@
case ISD::CARRY_FALSE: return "carry_false";
case ISD::ADDC: return "addc";
case ISD::ADDE: return "adde";
+ case ISD::SADDO: return "saddo";
+ case ISD::UADDO: return "uaddo";
case ISD::SUBC: return "subc";
case ISD::SUBE: return "sube";
case ISD::SHL_PARTS: return "shl_parts";