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Hello llvm-dev! We are currently building a tool using LLVM which statically computes the worst-case stack depth for programs whose call-graphs are statically constrained. While this task is undecidable for general programs, we specifically plan to use it to analyze all entry points into Zircon’s kernel and the vDSO. Currently, without such a tool, the best option for allocating kernel memory in Zircon is taking a best guess of a conservative overestimate of the memory required. This is problematic, however, because allocating too much memory wastes valuable, highly limited RAM, and allo...

Could people who are experiencing boot-time hangs in 4.9-PRERELEASE try the following patch to see if it helps? I've had one positive report so far, but it would be helpful to get more feedback to determine if this is the right fix to be committed. The problem was that interrupts were getting unmasked too early in the boot process, causing an interrupt storm that usually occurred while USB

...l values to their first use. [r327581](http://reviews.llvm.org/rL327581). * llvm-dsymutil has been renamed to dsymutil. [r327790](http://reviews.llvm.org/rL327790). ## Clang commits * The Clang C++ status page has been updated. [r327769](http://reviews.llvm.org/rL327769). * clang-tidy gained a Zircon module (Zircon forms the core of Fuchsia OS). It includes checks specific to the Zircon kernel. [r327590](http://reviews.llvm.org/rL327590). ## Other project commits * Prologue handling in LLDB has been improved, adding support for functions with multiple entry points. [r327331](http://reviews.l...

...to hear your thoughts and feedback on this. Best, Armando [1] https://github.com/ributzka/tapi [2] https://docs.oracle.com/cd/E23824_01/html/819-0690/chapter2-22.html [3] https://docs.bazel.build/versions/master/user-manual.html#flag--interface_shared_objects [4] https://fuchsia.googlesource.com/zircon/+/master/scripts/shlib-symbols [5] https://fuchsia.googlesource.com/zircon/+/master/scripts/dso-abi.h [6] https://sourceware.org/libabigail/ [7] https://sourceware.org/git/?p=glibc.git;a=blob;f=scripts/abilist.awk;h=bad7c3807e478e50e63c3834aa8969214bdd6f63;hb=HEAD [8] https://github.com/llvm-mirror...

...t;> [1] https://github.com/ributzka/tapi >> >> [2] https://docs.oracle.com/cd/E23824_01/html/819-0690/chapter2-22.html >> >> [3] https://docs.bazel.build/versions/master/user-manual.html#flag--interface_shared_objects >> >> [4] https://fuchsia.googlesource.com/zircon/+/master/scripts/shlib-symbols >> >> [5] https://fuchsia.googlesource.com/zircon/+/master/scripts/dso-abi.h >> >> [6] https://sourceware.org/libabigail/ >> >> [7] https://sourceware.org/git/?p=glibc.git;a=blob;f=scripts/abilist.awk;h=bad7c3807e478e50e63c3834aa896...

...<a href="https://docs.bazel.build/versions/master/user-manual.html#flag--interface_shared_objects">https://docs.bazel.build/versions/master/user-manual.html#flag--interface_shared_objects</a><br /> > >>> [4] <a href="https://fuchsia.googlesource.com/zircon/+/master/scripts/shlib-symbols">https://fuchsia.googlesource.com/zircon/+/master/scripts/shlib-symbols</a><br /> > >>> [5] <a href="https://fuchsia.googlesource.com/zircon/+/master/scripts/dso-abi.h">https://fuchsia.googlesource.com/zircon/+/master/s...

...> > > > > > [1] https://github.com/ributzka/tapi > > [2] https://docs.oracle.com/cd/E23824_01/html/819-0690/chapter2-22.html > > [3] https://docs.bazel.build/versions/master/user-manual.html#flag--interface_shared_objects > > [4] https://fuchsia.googlesource.com/zircon/+/master/scripts/shlib-symbols > > [5] https://fuchsia.googlesource.com/zircon/+/master/scripts/dso-abi.h > > [6] https://sourceware.org/libabigail/ > > [7] https://sourceware.org/git/?p=glibc.git;a=blob;f=scripts/abilist.awk;h=bad7c3807e478e50e63c3834aa8969214bdd6f63;hb=HEAD >...

...rmando >> >> >> [1] https://github.com/ributzka/tapi >> [2] https://docs.oracle.com/cd/E23824_01/html/819-0690/chapter2-22.html >> [3] https://docs.bazel.build/versions/master/user-manual.html#flag--interface_shared_objects >> [4] https://fuchsia.googlesource.com/zircon/+/master/scripts/shlib-symbols >> [5] https://fuchsia.googlesource.com/zircon/+/master/scripts/dso-abi.h >> [6] https://sourceware.org/libabigail/ >> [7] https://sourceware.org/git/?p=glibc.git;a=blob;f=scripts/abilist.awk;h=bad7c3807e478e50e63c3834aa8969214bdd6f63;hb=HEAD >&gt...

...of llvm-symbolizer currently. It isn't fully functional at the moment and it has some fuchsia specific stuff as well: https://fuchsia.googlesource.com/tools/+/master/symbolize/ but it should usable soon. The full spec we'd like to implement can be read here: https://fuchsia.googlesource.com/zircon/+/master/docs/symbolizer_markup.md Best, Jake On Fri, May 4, 2018 at 2:00 PM Walter Lee via llvm-dev < llvm-dev at lists.llvm.org> wrote: > I have ported ASan in LLVM to Myriad RTEMS, and I would like to > upstream the port. Below is the design doc. Feedback welcome. > > >...

...s://github.com/ributzka/tapi > >>> [2] > https://docs.oracle.com/cd/E23824_01/html/819-0690/chapter2-22.html > >>> [3] > https://docs.bazel.build/versions/master/user-manual.html#flag--interface_shared_objects > >>> [4] > https://fuchsia.googlesource.com/zircon/+/master/scripts/shlib-symbols > >>> [5] https://fuchsia.googlesource.com/zircon/+/master/scripts/dso-abi.h > >>> [6] https://sourceware.org/libabigail/ > >>> [7] > https://sourceware.org/git/?p=glibc.git;a=blob;f=scripts/abilist.awk;h=bad7c3807e478e50e63c3834...

...of llvm-symbolizer currently. It isn't fully functional at the moment and it has some fuchsia specific stuff as well: https://fuchsia.googlesource.com/tools/+/master/symbolize/ but it should usable soon. The full spec we'd like to implement can be read here: https://fuchsia.googlesource.com/zircon/+/master/docs/symbolizer_markup.md > Best, > Jake > On Fri, May 4, 2018 at 2:00 PM Walter Lee via llvm-dev < llvm-dev at lists.llvm.org> wrote: >> I have ported ASan in LLVM to Myriad RTEMS, and I would like to >> upstream the port. Below is the design doc. Feedback...

...ributzka/tapi >> > > [2] >> https://docs.oracle.com/cd/E23824_01/html/819-0690/chapter2-22.html >> > > [3] >> https://docs.bazel.build/versions/master/user-manual.html#flag--interface_shared_objects >> > > [4] >> https://fuchsia.googlesource.com/zircon/+/master/scripts/shlib-symbols >> > > [5] >> https://fuchsia.googlesource.com/zircon/+/master/scripts/dso-abi.h >> > > [6] https://sourceware.org/libabigail/ >> > > [7] >> https://sourceware.org/git/?p=glibc.git;a=blob;f=scripts/abilist.awk;h=bad7c380...

...or for `__sancov_guards` when linking this with another TU that contains the prevalent comdat for $ _ZN3Foo10public_fooEv. We see this here <https://logs.chromium.org/logs/fuchsia/buildbucket/cr-buildbucket.appspot.com/8880544155798188656/+/steps/build/0/steps/build_fuchsia/0/steps/ninja/0/steps/zircon/0/logs/raw_io.output_failure_raw_summary_/0> when building with sancov. The underlying issue seems to be that symbols in a comdat group that aren’t the key symbol are being referenced in other comdat groups. In this case, @ __sancov_gen_.1 is a part of comdat group $_ZN3Foo10inline_fooEv but is...

I have ported ASan in LLVM to Myriad RTEMS, and I would like to upstream the port. Below is the design doc. Feedback welcome. https://docs.google.com/document/d/1oxmk0xUojybDaQDAuTEVpHVMi5xQX74cJPyMJbaSaRM The port is expected to work with modified versions of RTEMS and newlib. I have a git repo with changes to those projects, that I can make available if there is interest. Here is the patch

I am running 4.8-STABLE. I recently did a cvsup (repeatedly, most recently today). Ever since, portupgrade dies with the following messages: zircon# portupgrade -r pkgconfig /usr/local/lib/ruby/site_ruby/1.6/pkgdb.rb:310:in `deorigin': failed to convert nil into String (PkgDB::DBError) from /usr/local/lib/ruby/site_ruby/1.6/pkgdb.rb:903:in `tsort_build' from /usr/local/lib/ruby/site_ruby/1.6/pkgdb.rb:902:in `each'...