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Turn on vzeroupper insertion on call boundaries for AVX; it works as far as I know...
author
Eli Friedman
<eli.friedman@gmail.com>
Thu, 17 Nov 2011 00:21:52 +0000
(
00:21
+0000)
committer
Eli Friedman
<eli.friedman@gmail.com>
Thu, 17 Nov 2011 00:21:52 +0000
(
00:21
+0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144867
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Target/X86/X86TargetMachine.cpp
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diff --git
a/lib/Target/X86/X86TargetMachine.cpp
b/lib/Target/X86/X86TargetMachine.cpp
index 37aa68106c7e8f991e83d4b2a158b48c02cddd2b..1c9f3bd5498ce47714ad668460ec7553ce926246 100644
(file)
--- a/
lib/Target/X86/X86TargetMachine.cpp
+++ b/
lib/Target/X86/X86TargetMachine.cpp
@@
-105,7
+105,7
@@
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(
fals
e));
+ cl::init(
tru
e));
//===----------------------------------------------------------------------===//
// Pass Pipeline Configuration