From: Eric Christopher <echristo@apple.com>
Date: Tue, 18 Oct 2011 22:50:17 +0000 (+0000)
Subject: Turn on the vzeroupper pass by default.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=7e8ae57be914cbb6fab111d98a89c6f07c77d2a1;p=oota-llvm.git

Turn on the vzeroupper pass by default.

I'll remove/rename the option in a few days.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142439 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 15c6c4e7a7d..1978c01aba2 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -102,7 +102,7 @@ X86TargetMachine::X86TargetMachine(const Target &T, StringRef TT,
 static cl::opt<bool>
 UseVZeroUpper("x86-use-vzeroupper",
   cl::desc("Minimize AVX to SSE transition penalty"),
-  cl::init(false));
+  cl::init(true));
 
 //===----------------------------------------------------------------------===//
 // Pass Pipeline Configuration