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Re: [PATCH, Pointer Bounds Checker 39/x] Avoid instrumented __builtin_unreachable calls

From: Jeff Law <law at redhat dot com>
To: Ilya Enkovich <enkovich dot gnu at gmail dot com>, gcc-patches at gcc dot gnu dot org
Date: Fri, 03 Oct 2014 09:50:52 -0600
Subject: Re: [PATCH, Pointer Bounds Checker 39/x] Avoid instrumented __builtin_unreachable calls
Authentication-results: sourceware.org; auth=none
References: <20141003090125 dot GD50375 at msticlxl57 dot ims dot intel dot com>

On 10/03/14 03:01, Ilya Enkovich wrote:

Hi,

This patch avoids generation of __builtin_unreachable calls marked as instrumented.  It follows paradigma of no instrumented builtin calls (and passes corresponding assert in expand_builtin from patch #18).

Thanks,
Ilya
--
2014-10-01  Ilya Enkovich  <ilya.enkovich@intel.com>

	* cgraphunit.c (walk_polymorphic_call_targets): Do not mark
	generated call to __builtin_unreachable as with_bounds.
	* ipa.c (walk_polymorphic_call_targets): Likewise.

OK. However, if we find many more generated calls to builtins that needto be marked this way, then we'll probably want to put the logic intothe expander code rather than hacking up each instance individually.


jeff

References:
- [PATCH, Pointer Bounds Checker 39/x] Avoid instrumented __builtin_unreachable calls
  - From: Ilya Enkovich

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