Tests: Tweak LLVM-Code-Symbols test to ignore common and undefined symbols for

now, let's start small.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@92170 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/utils/C++Tests/LLVM-Code-Symbols/check-symbols b/utils/C++Tests/LLVM-Code-Symbols/check-symbols
index f8ff734c72729618a38f18822c560a6296a9b2dd..cd54eed4a0d02be982ba3eba50e89faf93c5dcfa 100755 (executable)
--- a/utils/C++Tests/LLVM-Code-Symbols/check-symbols
+++ b/utils/C++Tests/LLVM-Code-Symbols/check-symbols
@@ -5,8 +5,6 @@ import difflib
 
 def capture_2(args0, args1):
     import subprocess
-    print ' '.join(args0)
-    print ' '.join(args1)
     p0 = subprocess.Popen(args0, stdin=None, stdout=subprocess.PIPE,
                           stderr=subprocess.PIPE)
     p1 = subprocess.Popen(args1, stdin=p0.stdout, stdout=subprocess.PIPE,
@@ -14,24 +12,38 @@ def capture_2(args0, args1):
     out,_ = p1.communicate()
     return out
 
+def normalize_nm(data):    
+    lines = data.split('\n')
+    lines.sort()
+
+    # FIXME: Ignore common symbols for now.
+    lines = [ln for ln in lines
+             if not ln.startswith('         C')]
+
+    return lines
+
 def main():
     import sys
     clang = sys.argv[1]
     flags = sys.argv[2:]
 
-    llvmgcc_nm = capture_2(["llvm-gcc"] + flags + ["-emit-llvm","-c","-o","-"],
-                           ["llvm-nm", "-extern-only"])
-    clang_nm = capture_2([clang] + flags + ["-emit-llvm","-c","-o","-"],
-                         ["llvm-nm", "-extern-only"])
+    # FIXME: Relax to include undefined symbols.
+    nm_args = ["llvm-nm", "-extern-only", "-defined-only"]
+
+    llvmgcc_args = ["llvm-gcc"] + flags + ["-emit-llvm","-c","-o","-"]
+    clang_args = [clang] + flags + ["-emit-llvm","-c","-o","-"]
+
+    llvmgcc_nm = capture_2(llvmgcc_args, nm_args)
+    clang_nm = capture_2(clang_args, nm_args)
 
-    llvmgcc_nm = llvmgcc_nm.split('\n')
-    clang_nm = clang_nm.split('\n')
-    llvmgcc_nm.sort()
-    clang_nm.sort()
+    llvmgcc_nm = normalize_nm(llvmgcc_nm)
+    clang_nm = normalize_nm(clang_nm)
 
     if llvmgcc_nm == clang_nm:
         sys.exit(0)
 
+    print ' '.join(llvmgcc_args), '|', ' '.join(nm_args)
+    print ' '.join(clang_args), '|', ' '.join(nm_args)
     for line in difflib.unified_diff(llvmgcc_nm, clang_nm,
                                      fromfile="llvm-gcc symbols",
                                      tofile="clang symbols"):