For PR1839: add initial support for __builtin_trap. llvm-gcc part is missed
as well as PPC codegen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46001 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index dd7c0e9..8e9cd74 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -3734,6 +3734,25 @@
break;
}
}
+ case ISD::TRAP: {
+ MVT::ValueType VT = Node->getValueType(0);
+ switch (TLI.getOperationAction(Node->getOpcode(), VT)) {
+ default: assert(0 && "This action not supported for this op yet!");
+ case TargetLowering::Custom:
+ Result = TLI.LowerOperation(Op, DAG);
+ if (Result.Val) break;
+ // Fall Thru
+ case TargetLowering::Legal:
+ // If this operation is not supported, lower it to 'abort()' call
+ SDOperand Chain = LegalizeOp(Node->getOperand(0));
+ TargetLowering::ArgListTy Args;
+ std::pair<SDOperand,SDOperand> CallResult =
+ TLI.LowerCallTo(Chain, Type::VoidTy, false, false, CallingConv::C, false,
+ DAG.getExternalSymbol("abort", MVT::Other), Args, DAG);
+ Result = CallResult.second;
+ break;
+ }
+ }
}
assert(Result.getValueType() == Op.getValueType() &&
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 2206515..381e9de 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3770,7 +3770,8 @@
case ISD::BUILD_PAIR: return "build_pair";
case ISD::STACKSAVE: return "stacksave";
case ISD::STACKRESTORE: return "stackrestore";
-
+ case ISD::TRAP: return "trap";
+
// Block memory operations.
case ISD::MEMSET: return "memset";
case ISD::MEMCPY: return "memcpy";
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 2934345..67da406 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -2932,6 +2932,11 @@
setValue(&I, DAG.getNode(ISD::FLT_ROUNDS, MVT::i32));
return 0;
}
+
+ case Intrinsic::trap: {
+ DAG.setRoot(DAG.getNode(ISD::TRAP, MVT::Other, getRoot()));
+ return 0;
+ }
}
}