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Turn on vzeroupper insertion on call boundaries for AVX; it works as far as I know, and I'd like to see wider testing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144867 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -105,7 +105,7 @@ X86TargetMachine::X86TargetMachine(const Target &T, StringRef TT,
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static cl::opt<bool>
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static cl::opt<bool>
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UseVZeroUpper("x86-use-vzeroupper",
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UseVZeroUpper("x86-use-vzeroupper",
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cl::desc("Minimize AVX to SSE transition penalty"),
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cl::desc("Minimize AVX to SSE transition penalty"),
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cl::init(false));
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cl::init(true));
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//===----------------------------------------------------------------------===//
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//===----------------------------------------------------------------------===//
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// Pass Pipeline Configuration
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// Pass Pipeline Configuration
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