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-rw-r--r--lib/CodeGen/RegAllocFast.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/CodeGen/RegAllocFast.cpp b/lib/CodeGen/RegAllocFast.cpp
index 6d7b5f4..b8b05a9 100644
--- a/lib/CodeGen/RegAllocFast.cpp
+++ b/lib/CodeGen/RegAllocFast.cpp
@@ -1104,6 +1104,10 @@ bool RAFast::runOnMachineFunction(MachineFunction &Fn) {
while (*Defs)
MRI->setPhysRegUsed(*Defs++);
+ // All machine operands and other references to virtual registers have been
+ // replaced. Remove the virtual registers.
+ MRI->clearVirtRegs();
+
SkippedInstrs.clear();
StackSlotForVirtReg.clear();
LiveDbgValueMap.clear();