CodeGen: Fix assertion in ScheduleDAGMILive::scheduleMI due to llvm.d…

…bg.value Fix a bug in ScheduleDAGMILive::scheduleMI which causes BotRPTracker not tracking CurrentBottom in some rare cases involving llvm.dbg.value. This issues causes amdgcn target to assert when compiling some user codes with -g. Differential Revision: https://reviews.llvm.org/D42394 llvm-svn: 323214
llvm · Jan 23, 2018 · 8b7454a · 8b7454a
1 parent c58c2b5
commit 8b7454a
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diff --git a/llvm/lib/CodeGen/MachineScheduler.cpp b/llvm/lib/CodeGen/MachineScheduler.cpp
@@ -1449,6 +1449,7 @@ void ScheduleDAGMILive::scheduleMI(SUnit *SU, bool IsTopNode) {
       }
       moveInstruction(MI, CurrentBottom);
       CurrentBottom = MI;
+      BotRPTracker.setPos(CurrentBottom);
     }
     if (ShouldTrackPressure) {
       RegisterOperands RegOpers;