From 640b58b8d7e3b0244540f8ef3a07c8191e08e8ee Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Wed, 27 Jan 2010 00:10:09 +0000
Subject: Clarify what -tailcallopt option actually do.

llvm-svn: 94628
---
 llvm/lib/Target/TargetMachine.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'llvm/lib/Target/TargetMachine.cpp')

diff --git a/llvm/lib/Target/TargetMachine.cpp b/llvm/lib/Target/TargetMachine.cpp
index fec59b5e2b5..8d990443be1 100644
--- a/llvm/lib/Target/TargetMachine.cpp
+++ b/llvm/lib/Target/TargetMachine.cpp
@@ -174,7 +174,7 @@ DefCodeModel("code-model",
     clEnumValEnd));
 static cl::opt<bool, true>
 EnablePerformTailCallOpt("tailcallopt",
-  cl::desc("Turn on tail call optimization."),
+  cl::desc("Turn fastcc calls into tail calls by (potentially) changing ABI."),
   cl::location(PerformTailCallOpt),
   cl::init(false));
 static cl::opt<unsigned, true>
-- 
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