Subzero: Partial implementation of global initializers.

szdiff.py

Index: szdiff.py
diff --git a/szdiff.py b/szdiff.py
index 046982ea2b87b540b3213e3f03ff8d6bbaecb2a0..b25681f33cb2ad9ee25619dd9e81d868652fff8f 100755
--- a/szdiff.py
+++ b/szdiff.py
@@ -42,7 +42,12 @@ if __name__ == '__main__':
     llc_out = []
     tail_call = re.compile(' tail call ');
     trailing_comment = re.compile(';.*')
-    ignore_pattern = re.compile('^ *$|^declare|^@')
+    ignore_pattern = re.compile('|'.join([
+                '^ *$',     # all-whitespace lines
+                '^declare', # declarations without definitions
+                '^@.*\]$'   # PNaCl global declarations like:
+                            #   @v = external global [4 x i8]
+                ]))
     prev_line = None
     for line in bitcode:
         if prev_line: