[Bug 215039] head -r309179 TARGET_ARCH=powerpc64 clang 3.9.0 based buildworld on powerpc64 using WITH_LLVM_LIBUNWIND= fails to build: asserts and rejects .S file contents

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215039

--- Comment #3 from Mark Millard  ---
Note: I recently posted to a list that the problems
still exist as of head -r339076 . This was in reply
to a suggestion to try it.

But the particular experiment was adding WITH_LLVM_LIBUNWIND=
to a src.conf type of file for using devel/powerpc64-gcc to
do the build (on a powerpc64). [clang is still not up to
it.]

For example, UnwindRegistersRestore.S did not get the C-preprocessor
handling that it is designed for and the __ppc__ assembler notation
still has "register designations are a Darwinism" status. The ";"
comment notation also might be a Darwinism as far as I know.

WITH_LLVM_LIBUNWIND= is not yet an option for powerpc64 and the like.

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[Bug 215039] head -r309179 TARGET_ARCH=powerpc64 clang 3.9.0 based buildworld on powerpc64 using WITH_LLVM_LIBUNWIND= fails to build: asserts and rejects .S file contents

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215039

--- Comment #2 from Mark Millard  ---
(In reply to Justin Hibbits from comment #1)

I have submitted llvm 31590 for the UnwindRegisters*.S related
syntax error reports. (Not covering libunwind.cpp's static assert
failure.)

While I placed it against llvm's/clang's powerpc support
initially my guess is they may reclassify it as against
libunwind's source.

(I did not find where to classify something as a libunwind
issue and I also took the point of view that their compiler
infrastructure was supposed to be able to parse their
project's source code.)

Of course they might end up declaring that
llvm/projects/libunwind/ is intentionally darwin-specific for
powerpc64 and powerpc and so only is expected to compile
for a darwin target relative to what they support. (I've
no clue of their policy/intent for such.)

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[Bug 215039] head -r309179 TARGET_ARCH=powerpc64 clang 3.9.0 based buildworld on powerpc64 using WITH_LLVM_LIBUNWIND= fails to build: asserts and rejects .S file contents

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215039

Justin Hibbits  changed:

   What|Removed |Added

 CC||jhibb...@freebsd.org

--- Comment #1 from Justin Hibbits  ---
The naked 'r*' and 'f*' register designations are a Darwinism.  SysV notation
requires '%r*' and '%f*', or naked numbers.

This should probably be filed upstream as well.

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[Bug 215039] head -r309179 TARGET_ARCH=powerpc64 clang 3.9.0 based buildworld on powerpc64 using WITH_LLVM_LIBUNWIND= fails to build: asserts and rejects .S file contents

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215039

Mark Linimon  changed:

   What|Removed |Added

   Assignee|freebsd-b...@freebsd.org|freebsd-toolchain@FreeBSD.o
   ||rg

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