[llvm] r310242 - [asan] Fix asan dynamic shadow check before copyArgsPassedByValToAllocas

[Hans Wennborg via llvm-commits]

On Mon, Aug 7, 2017 at 12:35 AM, Vitaly Buka via llvm-commits
<llvm-commits at lists.llvm.org> wrote:
> Author: vitalybuka
> Date: Mon Aug  7 00:35:33 2017
> New Revision: 310242
>
> URL: http://llvm.org/viewvc/llvm-project?rev=310242&view=rev
> Log:
> [asan] Fix asan dynamic shadow check before copyArgsPassedByValToAllocas
>
> Modified:
>     llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp

I assume this is a follow-up fix to r310241? Please note that in the
commit message.

Since I merged r310241 to 5.0 I assumed this should be merged too.

>
> Modified: llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp?rev=310242&r1=310241&r2=310242&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp (original)
> +++ llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp Mon Aug  7 00:35:33 2017
> @@ -756,7 +756,7 @@ struct FunctionStackPoisoner : public In
>    bool runOnFunction() {
>      if (!ClStack) return false;
>
> -    if (ClRedzoneByvalArgs && !ClForceDynamicShadow)
> +    if (ClRedzoneByvalArgs && Mapping.Offset != kDynamicShadowSentinel)
>        copyArgsPassedByValToAllocas();
>
>      // Collect alloca, ret, lifetime instructions etc.
>
>
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