Revert "Turn on the vzeroupper pass by default."

This reverts commit 494f7ac3e8d2ab3d94e52317abf9c42a949fe1f3. llvm-svn: 142455
2011-10-18 23:10:11 +00:00 · 2011-10-18 23:10:11 +00:00 · 16ec8c103a
parent d009bfac0c
commit 16ec8c103a
1 changed files with 1 additions and 1 deletions
--- a/llvm/lib/Target/X86/X86TargetMachine.cpp
+++ b/llvm/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(true));
+  cl::init(false));

 //===----------------------------------------------------------------------===//
 // Pass Pipeline Configuration