misched: Added CanHandleTerminators.
This is a special flag for targets that really want their block
terminators in the DAG. The default scheduler cannot handle this
correctly, so it becomes the specialized scheduler's responsibility to
schedule terminators.
llvm-svn: 154712
diff --git a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
index 6be1ab7..d46eb89 100644
--- a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
+++ b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp
@@ -39,8 +39,8 @@
LiveIntervals *lis)
: ScheduleDAG(mf), MLI(mli), MDT(mdt), MFI(mf.getFrameInfo()),
InstrItins(mf.getTarget().getInstrItineraryData()), LIS(lis),
- IsPostRA(IsPostRAFlag), UnitLatencies(false), LoopRegs(MLI, MDT),
- FirstDbgValue(0) {
+ IsPostRA(IsPostRAFlag), UnitLatencies(false), CanHandleTerminators(false),
+ LoopRegs(MLI, MDT), FirstDbgValue(0) {
assert((IsPostRA || LIS) && "PreRA scheduling requires LiveIntervals");
DbgValues.clear();
assert(!(IsPostRA && MRI.getNumVirtRegs()) &&
@@ -554,7 +554,7 @@
continue;
}
- assert(!MI->isTerminator() && !MI->isLabel() &&
+ assert((!MI->isTerminator() || CanHandleTerminators) && !MI->isLabel() &&
"Cannot schedule terminators or labels!");
SUnit *SU = MISUnitMap[MI];