[LLVMdev] [PATCH] Protection against stack-based memory corruption errors using SafeStack

[Volodymyr Kuznetsov]

Hi Kostya,

On Sat, Nov 15, 2014 at 1:53 PM, Volodymyr Kuznetsov <vova.kuznetsov at epfl.ch>
wrote:
> Do you think moving the pass to lib/Transform/Instrumentation but
> scheduling it during code generation would make sense ? If so, we'll
> do that and change the safestack tests to use opt instead of llc.

I tried to move the SafeStack to lib/Transform/Instrumentation, but I
realized that the SafeStack pass depends on TargetMachine: it gets the
stack alignment from TargetFrameLowering and the location of the unsafe
stack pointer from TargetLowering. It seems that making TargetMachine
available in opt would require opt to depend on more things from CodeGen
than it normally should.

- Vova
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