Clarify what -tailcallopt option actually do.

llvm-svn: 94628
2010-01-27 00:10:09 +00:00 · 2010-01-27 00:10:09 +00:00 · 640b58b8d7
parent a3575ca846
commit 640b58b8d7
1 changed files with 1 additions and 1 deletions
--- 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>