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[asan] Fix x86-32 asm instrumentation to preserve flags.
Patch by Yuri Gorshenin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209280 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -161,8 +161,7 @@ void X86AddressSanitizer32::InstrumentMemOperandImpl(
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MCSymbolRefExpr::Create(FuncSym, MCSymbolRefExpr::VK_PLT, Ctx);
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EmitInstruction(Out, MCInstBuilder(X86::CALLpcrel32).addExpr(FuncExpr));
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}
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EmitInstruction(Out, MCInstBuilder(X86::ADD32ri).addReg(X86::ESP)
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.addReg(X86::ESP).addImm(4));
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EmitInstruction(Out, MCInstBuilder(X86::POP32r).addReg(X86::EAX));
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EmitInstruction(Out, MCInstBuilder(X86::POP32r).addReg(X86::EAX));
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}
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