Revert "Turn on the vzeroupper pass by default."
This reverts commit 494f7ac3e8d2ab3d94e52317abf9c42a949fe1f3.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142455 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 1978c01..15c6c4e 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(true));
+ cl::init(false));
//===----------------------------------------------------------------------===//
// Pass Pipeline Configuration