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[[!meta copyright="Copyright © 2011, 2012, 2013 Free Software Foundation,
Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]
[[!tag open_issue_llvm]]
Here's what's to be done for maintaining [[/LLVM]].
Apart from the target-specific configuration machinery, there shouldn't be any
major differences within LLVM between the GNU/Hurd and GNU/Linux ports, for
example. Especially all the compiler magic is all the same.
[[!toc levels=2]]
# [[General information|/llvm]]
# [[Sources|source_repositories/llvm]]
# Configuration
<!--
For all of llvm, clang, compiler-rt, test-suite:
git checkout reviewed
git log --reverse --topo-order --pretty=fuller --stat=$COLUMNS,$COLUMNS -w -p -C --cc ..upstream/master
-i
/^commit |^merge:|^---$|hurd|linux|nacl|nptl|glibc|gs:
-->
Last reviewed up to the [[Git mirror's sources|source_repositories/llvm]]: llvm
7bf2e1b9ef797fda5de53956a1d2aea900ce794f (2013-01-09), clang
35eb8c3e12cac22f91d1cd4c74ae092ebc94fc40 (2013-01-09), compiler-rt
b1d1ef27db5b6c7788cda3dfd5deb6037dd4a3b8 (2013-01-09), test-suite
a26cfd0ef760f09e753b76d3e633a6af9ed637f8 (2013-01-08).
* Configure fragments that have `*linux*` cases might/should often contain
those for us (and GNU/k*BSD) as well.
* <http://anonscm.debian.org/viewvc/pkg-llvm/llvm/trunk/debian/patches/>.
* [low] Some `PATH_MAX`/`MAXPATHLEN` things.
* Review `gs:` usage in `[llvm]/lib/Target/X86/`, `[llvm]/test/CodeGen/X86/`,
`[llvm]/test/MC/X86/`.
./clang/tschwinge/Hank_Mobley/docs/LanguageExtensions.rst: movl %gs:(%eax), %eax
./clang/tschwinge/Hank_Mobley/test/Sema/asm.c: asm volatile ("movb %%gs:%P2,%b0" : "=q"(b) : "0"(0), "i"(5L));
# Build
Here's a log of a LLVM build run; this is from our [[Git repository's
sources|source_repositories/llvm]], llvm
792d08f44e4386ea671c1313cad9dfc9fc853794 (2013-01-09), clang
1d2e1d18ae77b1949a31203ed7001b5817f29b09 (2013-01-09), compiler-rt
b1d1ef27db5b6c7788cda3dfd5deb6037dd4a3b8 (2013-01-09), test-suite
a26cfd0ef760f09e753b76d3e633a6af9ed637f8 (2013-01-08), run on kepler.SCHWINGE
and coulomb.SCHWINGE.
$ export LC_ALL=C
$ (cd ../Horace_Silver/ && ln -sfn ../../../clang/tschwinge/Hank_Mobley tools/clang)
$ (cd ../Horace_Silver/ && ln -sfn ../../../compiler-rt/tschwinge/Doug_Watkins projects/compiler-rt)
$ (cd ../Horace_Silver/ && ln -sfn ../../../test-suite/tschwinge/Art_Blakey projects/test-suite)
$ ../Horace_Silver/configure --prefix="$PWD".install --enable-optimized SHELL=/bin/dash CC=gcc-4.6 CXX=g++-4.6 2>&1 | tee log_build
$ make VERBOSE=1 2>&1 | tee log_build_
Different hosts may default to different shells and compiler versions; thus
harmonized.
Passing `--enable-debug-symbols`, the GNU/Hurd build terminates with a SIGBUS
when linking `Release+Debug+Asserts/bin/clang` (which is bigger than 500 MiB
for the corresponding GNU/Linux build). Using `--enable-debug-symbols
--enable-shared`, the GNU/Hurd build hang after `make[1]: Leaving directory
[...]/tools/llvm-shlib`, after (successfully) linking
`Release+Debug+Asserts/lib/libLLVM-3.3svn.so` (which is bigger than 250 MiB for
the corresponding GNU/Linux build). Also there is a separate
`--enable-debug-runtime`.
This takes up around 3 GiB, and needs roughly 1.25 h on kepler.SCHWINGE and
4.25 h on coulomb.SCHWINGE.
<!--
$ (make VERBOSE=1 && touch .go-install) 2>&1 | tee log_build_ && test -f .go-install && (make VERBOSE=1 install && touch .go-test) 2>&1 | tee log_install && test -f .go-test && { make -k VERBOSE=1 LIT_ARGS='-v --threads=1' check-all 2>&1 | tee log_test_check-all; make -k -C projects/test-suite/ 2>&1 | tee log_test_test-suite; }
-->
## Analysis
$ toolchain/logs/process llvm build
-checking type of operating system we're going to host on... Linux
-checking type of operating system we're going to target... Linux
+checking type of operating system we're going to host on... GNU
+checking type of operating system we're going to target... GNU
-checking mach/mach.h usability... no
-checking mach/mach.h presence... no
-checking for mach/mach.h... no
+checking mach/mach.h usability... yes
+checking mach/mach.h presence... yes
+checking for mach/mach.h... yes
-checking for mmap of files... yes
+checking for mmap of files... no
checking if /dev/zero is needed for mmap... no
+configure: WARNING: mmap() of files required but not found
Due to [[mmap_write-only]].
-checking type of operating system we're going to target... Linux
+checking type of operating system we're going to target... Unknown
+In file included from [...]/tschwinge/Horace_Silver/lib/Support/Process.cpp:29:0:
+[...]/tschwinge/Horace_Silver/lib/Support/Unix/Process.inc: In function 'unsigned int getColumns(int)':
+[...]/tschwinge/Horace_Silver/lib/Support/Unix/Process.inc:220:21: warning: enumeral and non-enumeral type in conditional expression [enabled b
include/llvm/Config/*
Makefile.config
TODO
# Install
$ make VERBOSE=1 install 2>&1 | tee log_install
This takes up around 350 MiB, and needs roughly 1 min on kepler.SCHWINGE and 12
min on coulomb.SCHWINGE.
## Analysis
$ toolchain/logs/process llvm install
TODO
# Testsuite
$ make -k VERBOSE=1 LIT_ARGS='-v --threads=1' check-all 2>&1 | tee log_test_check-all
$ make -k -C projects/test-suite/ 2>&1 | tee log_test_test-suite
`LIT_ARGS=-v` is default for `VERBOSE=1`, but we want only one worker thread,
for stable order and usable test output log.
This needs roughly 10 min (`check-all`) + 145 min (test-suite) = 155 min on
kepler.SCHWINGE and 40 min (`check-all`) + 80 min (test-suite) = 120 min on
coulomb.SCHWINGE.
## Analysis
$ toolchain/logs/process llvm test
TODO
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