[llvm-dev] Critical XRay fixes for Arm32

Serge Rogatch via llvm-dev llvm-dev at lists.llvm.org
Wed Jan 25 16:29:51 PST 2017

Sorry, I initially included LLVM-Commits rather than LLVM-Dev. Fixed.

On 26 January 2017 at 03:26, Serge Rogatch <serge.rogatch at gmail.com> wrote:

> Hi Dean, Renato,
> AFAIK, unfortunately, these critical Arm32 XRay fixes are not yet in 4.0:
> https://reviews.llvm.org/D28624 , https://reviews.llvm.org/D28623 . The
> first repairs XRay instrumentation map emission. Without this map XRay
> doesn't work at all: the runtime doesn't see anything to instrument. The
> second fixes the CPU cache incoherency problem. Without this patch, XRay
> will intermittently fail to patch or unpatch some sleds (depending on
> whether their code is in CPU cache or not).
> Is there any chance we can get these patches to 4.0? This page
> http://llvm.org/docs/HowToReleaseLLVM.html#release-patch-rules says that
> "release manager, the official release testers or the code owners" may
> approve cherry-picking to release branch from trunk. AFAIK, you are code
> owners for XRay and ARM. I don't know who are the release manager or
> official release testers.
> Cheers,
> Serge
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