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| -rw-r--r-- | docs/ReleaseNotes.html | 55 |
1 files changed, 36 insertions, 19 deletions
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html index b0309ef120..6ec9f84a2a 100644 --- a/docs/ReleaseNotes.html +++ b/docs/ReleaseNotes.html @@ -69,20 +69,28 @@ href="http://llvm.cs.uiuc.edu/releases/">releases page</a>.</p> <div class="doc_text"> -<p>This is the third public release of the LLVM compiler infrastructure. +<p> +This is the third public release of the LLVM compiler infrastructure. This +release incorporates several <a href="#newfeatures">new features</a> (including +exception handling support for the native code generators, the start of a +source-level debugger, and profile guided optimizer components), many <a +href="#qualityofimp">speedups</a> and <a href="#codequality">code quality</a> +improvements, documentation improvements, and a small collection of important <a +href="bugfix">bug fixes</a>. Overall, this is our highest quality release to +date, and we encourage you to upgrade if you are using LLVM 1.0 or 1.1. </p> -<p>At this time, LLVM is known to correctly compile and run all C +<p><B> FIXME: UPDATE: </b> +At this time, LLVM is known to correctly compile and run all C & C++ SPEC CPU2000 benchmarks, the Olden benchmarks, and the Ptrdist benchmarks. It has also been used to compile <b>many</b> other programs. LLVM now also works with a broad variety of C++ programs, though it has still received less testing than the C front-end. </p> - <!--=========================================================================--> <div class="doc_subsubsection"> -This release implements the following new features: +<a name="newfeatures">This release implements the following new features:</a> </div> <ol> @@ -90,8 +98,23 @@ This release implements the following new features: <li>LLVM 1.2 encodes bytecode files for large programs in 10-30% less space.</li> <li>LLVM can now feed profile information back into optimizers for Profile Guided Optimization, and includes a simple basic block reordering pass.</li> <li>The LLVM JIT lazily initializes global variables, reducing startup time for programs with lots of globals (like C++ programs).</li> + +<li>The build and installation infrastructure in this release is dramatically +improved. There is now an <a +href="http://llvm.cs.uiuc.edu/PR105"><tt>autoconf/AutoRegen.sh</tt> script</a> +that you can run to rebuild the <tt>configure</tt> script and its associated +files as well as beta support for "<a +href="http://llvm.cs.uiuc.edu/PR208">make</a> <a +href="http://llvm.cs.uiuc.edu/PR220">install</a>" and <a +href="http://llvm.cs.uiuc.edu/PR203">RPM package generation</a>.</li> + <li>The "tblgen" tool is <a href="TableGenFundamentals.html">now documented</a>.</li> +<li>The LLVM code generator can now fold spill code into instructions on targets +that support it.</li> <li><a href="http://llvm.cs.uiuc.edu/PR253">LLVM now no longer depends on the boost library</a>.</li> +<li>The X86 backend now generates <b>substantially</b> better native code, and is faster.</li> +<li>The C backend has been turned moved from the "llvm-dis" tool to the "llc" +tool. You can activate it with "<tt>llc -march=c foo.bc -o foo.c</tt>".</li> </ol> @@ -110,7 +133,7 @@ In this release, the following missing features were implemented: <!--=========================================================================--> <div class="doc_subsubsection"> -In this release, the following Quality of Implementation issues were fixed: +<a name="qualityofimp">In this release, the following Quality of Implementation issues were fixed:</a> </div> <ol> @@ -123,20 +146,13 @@ In this release, the following Quality of Implementation issues were fixed: <li><a href="http://llvm.cs.uiuc.edu/PR209">[loadvn/inline/scalarrepl] Slow optimizations with extremely large basic blocks</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR224">[asmparser] Really slow parsing of types with complex upreferences</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR205">[llvmgcc] C front-end does not emit 'zeroinitializer' when possible</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR233">[llvmgcc] Structure copies result in a LOT of code</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR239">LLVM is now much more memory efficient when handling large zero initialized arrays</a></li> </ol> <!--=========================================================================--> <div class="doc_subsubsection"> -LLVM gained several improvements to its build and installation -infrastructure in this release. There is now -a <tt>autoconf/AutoRegen.sh</tt> script that you can run to rebuild the -<tt>configure</tt> script and its associated files -(<a href="http://llvm.cs.uiuc.edu/PR105">Bug 105</a>) as well as beta support -for "make install" (<a href="http://llvm.cs.uiuc.edu/PR208">Bug 208</a> and -<a href="http://llvm.cs.uiuc.edu/PR220">Bug 220</a>) and RPM package generation -(<a href="http://llvm.cs.uiuc.edu/PR203">Bug 203</a>). -Additionally, in this release, the following build problems were fixed: +In this release, the following build problems were fixed: </div> <ol> @@ -147,20 +163,22 @@ Additionally, in this release, the following build problems were fixed: <!--=========================================================================--> <div class="doc_subsubsection"> -In this release, the following Code Quality issues were fixed: +<a name="codequality">In this release, the following Code Quality issues were fixed:</a> </div> <ol> <li><a href="http://llvm.cs.uiuc.edu/PR187">[loopsimplify] Many pointless phi nodes are created</a></li> -<li>The X86 backend didn't generate <tt>fchs</tt> to negate floating point numbers</li> -<li>The X86 backend didn't expand memcpy() into the <tt>rep movs</tt> instruction</li> <li><a href="http://llvm.cs.uiuc.edu/PR237">[x86] wierd stack/frame pointer manipulation</a></li> + +<li>The X86 backend now generate <tt>fchs</tt> to negate floating point numbers, +compiles memcpy() into the <tt>rep movs</tt> instruction, and makes much better +use of powerful addressing modes and instructions.</li> </ol> <!--=========================================================================--> <div class="doc_subsubsection"> -In this release, the following bugs in the previous release were fixed: +<a name="bugfix">In this release, the following bugs in the previous release were fixed:</a> </div> <p>Bugs in the LLVM Core:</p> @@ -197,7 +215,6 @@ management functions in libc runtime to allow them to be overriden</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR204">[llvmg++] Dynamically initialized constants cannot be marked 'constant'</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR216">[llvmgcc] floating-point unary minus is incorrect for +0.0</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR221">[llvm-gcc] miscompilation of 'X = Y = Z' with aggregate values</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR233">[llvmgcc] Structure copies result in a LOT of code</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR244">[llvm-gcc] miscompilation when a function is re-declared as static</a></li> </ol> |