http://people.freedesktop.org/~jrfonseca/llvm/ and set the LLVM environment
variable to the extracted path.
- The version of LLVM from SVN ("2.7svn") from mid-March 2010 seems pretty
+ For MSVC there are two set of binaries: llvm-x.x-msvc32mt.7z and
+ llvm-x.x-msvc32mtd.7z .
+
+ You have to set the LLVM=/path/to/llvm-x.x-msvc32mtd env var when passing
+ debug=yes to scons, and LLVM=/path/to/llvm-x.x-msvc32mt when building with
+ debug=no. This is necessary as LLVM builds as static library so the chosen
+ MS CRT must match.
+
+ The version of LLVM from SVN ("2.7svn") from mid-March 2010 is pretty
stable and has some features not in version 2.6.
- scons (optional)
- - udis86, http://udis86.sourceforge.net/ (optional):
+ - udis86, http://udis86.sourceforge.net/ (optional). My personal repository
+ supports more opcodes which haven't been merged upstream yet:
- git clone git://udis86.git.sourceforge.net/gitroot/udis86/udis86
+ git clone git://anongit.freedesktop.org/~jrfonseca/udis86
cd udis86
./autogen.sh
./configure --with-pic
need to ask, don't even try it.
+Profiling
+=========
+
+To profile llvmpipe you should pass the options
+
+ scons debug=no profile=yes <same-as-before>
+
+This will ensure that frame pointers are used both in C and JIT functions, and
+that no tail call optimizations are done by gcc.
+
+
+To better profile JIT code you'll need to build LLVM with oprofile integration.
+
+ source_dir=$PWD/llvm-2.6
+ build_dir=$source_dir/build/profile
+ install_dir=$source_dir-profile
+
+ mkdir -p "$build_dir"
+ cd "$build_dir" && \
+ $source_dir/configure \
+ --prefix=$install_dir \
+ --enable-optimized \
+ --disable-profiling \
+ --enable-targets=host-only \
+ --with-oprofile
+
+ make -C "$build_dir"
+ make -C "$build_dir" install
+
+ find "$install_dir/lib" -iname '*.a' -print0 | xargs -0 strip --strip-debug
+
+The you should define
+
+ export LLVM=/path/to/llvm-2.6-profile
+
+and rebuild.
+
+
Unit testing
============