On Jul 26, 2007, at 6:27 PM, Evan Cheng wrote:
On Jul 26, 2007, at 1:12 AM, Christopher Lamb wrote:
/// EmitNode - Generate machine code for an node and needed
dependencies.
///
void ScheduleDAG::EmitNode(SDNode *Node,
@@ -436,6 +578,14 @@
// If machine instruction
if (Node->isTargetOpcode()) {
unsigned Opc = Node->getTargetOpcode();
+
+ // Handle subreg insert/extract specially
+ if (Opc == TargetInstrInfo::EXTRACT_SUBREG ||
+ Opc == TargetInstrInfo::INSERT_SUBREG) {
+ EmitSubregNode(Node, VRBaseMap);
+ return;
+ }
+
Hi Chris,
Is this right? EXTRACT_SUBREG and INSERT_SUBREG are not target
opcodes.
Actually, they are both DAG nodes and target opcodes. ISel lowers the
DAG nodes to target opcodes before schedule DAG sees them.
--
Christopher Lamb
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