[PATCH] [asan-assembly-instrumentation] Fixed operations with esp for x86-32.

[Yuri Gorshenin]

Hi eugenis,

[asan-assembly-instrumentation] Fixed operations with esp for x86-32.

http://reviews.llvm.org/D3846

Files:
  lib/Target/X86/AsmParser/X86AsmInstrumentation.cpp

Index: lib/Target/X86/AsmParser/X86AsmInstrumentation.cpp
===================================================================
--- lib/Target/X86/AsmParser/X86AsmInstrumentation.cpp
+++ lib/Target/X86/AsmParser/X86AsmInstrumentation.cpp
@@ -161,8 +161,7 @@
         MCSymbolRefExpr::Create(FuncSym, MCSymbolRefExpr::VK_PLT, Ctx);
     EmitInstruction(Out, MCInstBuilder(X86::CALLpcrel32).addExpr(FuncExpr));
   }
-  EmitInstruction(Out, MCInstBuilder(X86::ADD32ri).addReg(X86::ESP)
-                           .addReg(X86::ESP).addImm(4));
+  EmitInstruction(Out, MCInstBuilder(X86::POP32r).addReg(X86::EAX));
   EmitInstruction(Out, MCInstBuilder(X86::POP32r).addReg(X86::EAX));
 }
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