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-rw-r--r--lib/CodeGen/PostRASchedulerList.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/CodeGen/PostRASchedulerList.cpp b/lib/CodeGen/PostRASchedulerList.cpp
index 0fc6c3370b..865479d300 100644
--- a/lib/CodeGen/PostRASchedulerList.cpp
+++ b/lib/CodeGen/PostRASchedulerList.cpp
@@ -454,6 +454,7 @@ bool SchedulePostRATDList::BreakAntiDependencies() {
assert(((KillIndices[NewReg] == -1u) != (DefIndices[NewReg] == -1u)) &&
"Kill and Def maps aren't consistent for NewReg!");
if (KillIndices[NewReg] == -1u &&
+ Classes[NewReg] != reinterpret_cast<TargetRegisterClass *>(-1) &&
KillIndices[AntiDepReg] <= DefIndices[NewReg]) {
DOUT << "Breaking anti-dependence edge on "
<< TRI->getName(AntiDepReg)