From 18505b352212a5e9eac07a8555ded232b5ece894 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jan=20Sj=C3=B6din?= <jan_sjodin@yahoo.com>
Date: Tue, 18 Sep 2012 18:47:58 +0000
Subject: [PATCH] Add hidden flag to exclude aliases from output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164158 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Other/llvm-nm-without-aliases.ll | 25 +++++++++++++++++++++++++
 tools/llvm-nm/llvm-nm.cpp             |  8 ++++++--
 2 files changed, 31 insertions(+), 2 deletions(-)
 create mode 100644 test/Other/llvm-nm-without-aliases.ll

diff --git a/test/Other/llvm-nm-without-aliases.ll b/test/Other/llvm-nm-without-aliases.ll
new file mode 100644
index 00000000000..9d9408c13b6
--- /dev/null
+++ b/test/Other/llvm-nm-without-aliases.ll
@@ -0,0 +1,25 @@
+; RUN: llvm-as < %s > %t
+; RUN: llvm-nm -without-aliases < %t | FileCheck %s
+; RUN: llvm-nm < %t | FileCheck --check-prefix=WITH %s
+
+; CHECK-NOT: T a0bar
+; CHECK-NOT: T a0foo
+; CHECK: T bar
+; CHECK: T foo
+
+; WITH: T a0bar
+; WITH: T a0foo
+; WITH: T bar
+; WITH: T foo
+
+@a0foo = alias void ()* @foo
+
+define void @foo() {
+  ret void
+}
+
+@a0bar = alias void ()* @bar
+
+define void @bar() {
+  ret void
+}
diff --git a/tools/llvm-nm/llvm-nm.cpp b/tools/llvm-nm/llvm-nm.cpp
index eb52acc85db..0543e83f9cb 100644
--- a/tools/llvm-nm/llvm-nm.cpp
+++ b/tools/llvm-nm/llvm-nm.cpp
@@ -110,6 +110,9 @@ namespace {
 
   cl::opt<bool> SizeSort("size-sort", cl::desc("Sort symbols by size"));
 
+  cl::opt<bool> WithoutAliases("without-aliases", cl::Hidden,
+                               cl::desc("Exclude aliases from output"));
+
   bool PrintAddress = true;
 
   bool MultipleFiles = false;
@@ -275,8 +278,9 @@ static void DumpSymbolNamesFromModule(Module *M) {
   std::for_each (M->begin(), M->end(), DumpSymbolNameForGlobalValue);
   std::for_each (M->global_begin(), M->global_end(),
                  DumpSymbolNameForGlobalValue);
-  std::for_each (M->alias_begin(), M->alias_end(),
-                 DumpSymbolNameForGlobalValue);
+  if (!WithoutAliases)
+    std::for_each (M->alias_begin(), M->alias_end(),
+		   DumpSymbolNameForGlobalValue);
 
   SortAndPrintSymbolList();
 }
-- 
2.34.1