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-rw-r--r--llvm/tools/opt-viewer/optrecord.py6
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/tools/opt-viewer/optrecord.py b/llvm/tools/opt-viewer/optrecord.py
index 3744c68af60..2bf0f356d85 100644
--- a/llvm/tools/opt-viewer/optrecord.py
+++ b/llvm/tools/opt-viewer/optrecord.py
@@ -17,6 +17,12 @@ import functools
from multiprocessing import Lock
import os, os.path
import subprocess
+try:
+ # The previously builtin function `intern()` was moved
+ # to the `sys` module in Python 3.
+ from sys import intern
+except:
+ pass
import optpmap
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