[llvm-symbolizer] Add -addresses, -a as aliases for -print-address

Summary: Provides -addresses, -a as aliases for -print-address. Motivation: https://bugs.llvm.org/show_bug.cgi?id=40067.

Reviewers: jhenderson, ruiu, rnk, fjricci

Reviewed By: jhenderson

Subscribers: rupprecht, llvm-commits

Differential Revision: https://reviews.llvm.org/D56635

llvm-svn: 351043
diff --git a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
index c53332b..e922bc9 100644
--- a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
+++ b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
@@ -83,9 +83,17 @@
 ClDsymHint("dsym-hint", cl::ZeroOrMore,
            cl::desc("Path to .dSYM bundles to search for debug info for the "
                     "object files"));
+
+// -print-address, -addresses, -a
 static cl::opt<bool>
-    ClPrintAddress("print-address", cl::init(false),
-                   cl::desc("Show address before line information"));
+ClPrintAddress("print-address", cl::init(false),
+               cl::desc("Show address before line information"));
+static cl::alias
+ClPrintAddressAliasAddresses("addresses", cl::desc("Alias for -print-address"),
+                             cl::NotHidden, cl::aliasopt(ClPrintAddress));
+static cl::alias
+ClPrintAddressAliasA("a", cl::desc("Alias for -print-address"),
+                     cl::NotHidden, cl::aliasopt(ClPrintAddress));
 
 // -pretty-print, -p
 static cl::opt<bool>