From b30f2f51410449a6d476fed5c486a4ef8fd5f912 Mon Sep 17 00:00:00 2001
From: Matthias Braun <matze@braunis.de>
Date: Sat, 30 Jan 2016 01:24:31 +0000
Subject: Avoid overly large SmallPtrSet/SmallSet

These sets perform linear searching in small mode so it is never a good
idea to use SmallSize/N bigger than 32.

llvm-svn: 259283
---
 llvm/lib/Support/CommandLine.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'llvm/lib/Support/CommandLine.cpp')

diff --git a/llvm/lib/Support/CommandLine.cpp b/llvm/lib/Support/CommandLine.cpp
index fdcdb03706d..c1615a0a683 100644
--- a/llvm/lib/Support/CommandLine.cpp
+++ b/llvm/lib/Support/CommandLine.cpp
@@ -1449,7 +1449,7 @@ static int OptNameCompare(const std::pair<const char *, Option *> *LHS,
 static void sortOpts(StringMap<Option *> &OptMap,
                      SmallVectorImpl<std::pair<const char *, Option *>> &Opts,
                      bool ShowHidden) {
-  SmallPtrSet<Option *, 128> OptionSet; // Duplicate option detection.
+  SmallPtrSet<Option *, 32> OptionSet; // Duplicate option detection.
 
   for (StringMap<Option *>::iterator I = OptMap.begin(), E = OptMap.end();
        I != E; ++I) {
-- 
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