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 15c6c4e..1978c01 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -102,7 +102,7 @@
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