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author | Ed Schouten <ed@FreeBSD.org> | 2009-06-03 21:10:15 +0000 |
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committer | Ed Schouten <ed@FreeBSD.org> | 2009-06-03 21:10:15 +0000 |
commit | 68eb509bdc5c7007520d5231cd92de28106236df (patch) | |
tree | db103e2a0755ab86f18c181a2d208a6a63284c97 /docs | |
parent | 33a8e4360f5050416130517e5c7a1007d06aa90f (diff) | |
download | src-68eb509bdc5c7007520d5231cd92de28106236df.tar.gz src-68eb509bdc5c7007520d5231cd92de28106236df.zip |
Import LLVM, at r72805, which fixes PR4315 and PR4316.vendor/llvm/llvm-r72805
Normally I'm not updating sources this often, but I want to get rid of
this breakage, because right now I can't offer a proper source snapshot
yet.
Notes
Notes:
svn path=/vendor/llvm/dist/; revision=193399
svn path=/vendor/llvm/llvm-r72805/; revision=193400; tag=vendor/llvm/llvm-r72805
Diffstat (limited to 'docs')
-rw-r--r-- | docs/CMake.html | 4 | ||||
-rw-r--r-- | docs/GoldPlugin.html | 30 |
2 files changed, 34 insertions, 0 deletions
diff --git a/docs/CMake.html b/docs/CMake.html index 27ec88ec9478..b329ca46d62e 100644 --- a/docs/CMake.html +++ b/docs/CMake.html @@ -248,6 +248,10 @@ <dt><b>LLVM_ENABLE_THREADS</b>:BOOL</dt> <dd>Build with threads support, if available. Defaults to ON.</dd> + <dt><b>LLVM_ENABLE_ASSERTS</b>:BOOL</dt> + <dd>Enables code asserts. Defaults to ON if and only if + CMAKE_BUILD_TYPE is <i>Release</i>.</dd> + <dt><b>LLVM_ENABLE_PIC</b>:BOOL</dt> <dd>Add the <i>-fPIC</i> flag to the compiler command-line, if the compiler supports this flag. Some systems, like Windows, does not diff --git a/docs/GoldPlugin.html b/docs/GoldPlugin.html index ee014101bc24..6be5277efd16 100644 --- a/docs/GoldPlugin.html +++ b/docs/GoldPlugin.html @@ -14,6 +14,7 @@ <li><a href="#usage">Usage</a> <ul> <li><a href="#example1">Example of link time optimization</a></li> + <li><a href="#lto_autotools">Quickstart for using LTO with autotooled projects</a></li> </ul></li> <li><a href="#licensing">Licensing</a></li> </ol> @@ -136,6 +137,35 @@ $ llvm-gcc -use-gold-plugin a.o b.o -o main # <-- link with LLVMgold plugin </div> <!--=========================================================================--> +<div class="doc_section"><a name="lto_autotools">Quickstart for using LTO with autotooled projects</a></div> +<!--=========================================================================--> +<div class="doc_text"> + <p><tt>gold</tt>, <tt>ar</tt> and <tt>nm</tt> all support plugins now, so everything should be + in place for an easy to use LTO build of autotooled projects:</p> + <ul> + <li>Follow the instructions <a href="#build">on how to build libLLVMgold.so</a>.</li> + <li>Install the newly built binutils to <tt>$PREFIX</tt></li> + <li>Copy <tt>Release/lib/libLLVMgold.so</tt> to + <tt>$PREFIX/libexec/gcc/x86_64-unknown-linux-gnu/4.2.1/</tt> and + <tt>$PREFIX/lib/bfd-plugins/</tt></li> + <li>Set environment variables (<tt>$PREFIX</tt> is where you installed llvm-gcc and + binutils): + <pre class="doc_code"> +export CC="$PREFIX/bin/llvm-gcc -use-gold-plugin" +export CXX="$PREFIX/bin/llvm-g++ -use-gold-plugin" +export AR="$PREFIX/bin/ar --plugin libLLVMgold.so" +export NM="$PREFIX/bin/nm --plugin libLLVMgold.so" +export RANLIB=/bin/true #ranlib is not needed, and doesn't support .bc files in .a +export CFLAGS="-O4" + </pre> + </li> + <li>Configure & build the project as usual: <tt>./configure && make && make check</tt> </li> + </ul> + <p> The environment variable settings may work for non-autotooled projects + too, but you may need to set the <tt>LD</tt> environment variable as well.</p> +</div> + +<!--=========================================================================--> <div class="doc_section"><a name="licensing">Licensing</a></div> <!--=========================================================================--> <div class="doc_text"> |