Update LocalRewriter::DistanceMap when inserting stack loads.
In the included test case, a stack load was not included in DistanceMap. That
caused TransferDeadness to ignore the instruction, leading to a scavenger
assert.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79090 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegRewriter.cpp b/lib/CodeGen/VirtRegRewriter.cpp
index b34d43a..3e651a5 100644
--- a/lib/CodeGen/VirtRegRewriter.cpp
+++ b/lib/CodeGen/VirtRegRewriter.cpp
@@ -1587,6 +1587,7 @@
MachineInstr *LoadMI = prior(InsertLoc);
VRM.addSpillSlotUse(SS, LoadMI);
++NumPSpills;
+ DistanceMap.insert(std::make_pair(LoadMI, Dist++));
}
NextMII = next(MII);
}
@@ -1678,6 +1679,7 @@
MachineInstr *LoadMI = prior(InsertLoc);
VRM.addSpillSlotUse(SSorRMId, LoadMI);
++NumLoads;
+ DistanceMap.insert(std::make_pair(LoadMI, Dist++));
}
// This invalidates Phys.
@@ -1977,6 +1979,7 @@
MachineInstr *LoadMI = prior(InsertLoc);
VRM.addSpillSlotUse(SSorRMId, LoadMI);
++NumLoads;
+ DistanceMap.insert(std::make_pair(LoadMI, Dist++));
}
// This invalidates PhysReg.
Spills.ClobberPhysReg(PhysReg);