Changes in directory llvm/docs:
ReleaseNotes.html updated: 1.368 -> 1.369 --- Log message: strip the llvm 1.9 info out of the release notes --- Diffs of the changes: (+29 -121) ReleaseNotes.html | 150 ++++++++++-------------------------------------------- 1 files changed, 29 insertions(+), 121 deletions(-) Index: llvm/docs/ReleaseNotes.html diff -u llvm/docs/ReleaseNotes.html:1.368 llvm/docs/ReleaseNotes.html:1.369 --- llvm/docs/ReleaseNotes.html:1.368 Tue Apr 3 23:14:31 2007 +++ llvm/docs/ReleaseNotes.html Tue May 8 23:58:11 2007 @@ -4,11 +4,11 @@ <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link rel="stylesheet" href="llvm.css" type="text/css"> - <title>LLVM 1.9 Release Notes</title> + <title>LLVM 2.0 Release Notes</title> </head> <body> -<div class="doc_title">LLVM 1.9 Release Notes</div> +<div class="doc_title">LLVM 2.0 Release Notes</div> <ol> <li><a href="#intro">Introduction</a></li> @@ -32,13 +32,10 @@ <div class="doc_text"> <p>This document contains the release notes for the LLVM compiler -infrastructure, release 1.9. Here we describe the status of LLVM, including any -known problems and major improvements from the previous release. The most -up-to-date version of this document (corresponding to LLVM CVS) can be found -on the <a -href="http://llvm.org/releases/";>LLVM releases web site</a>. If you are -not reading this on the LLVM web pages, you should probably go there because -this document may be updated after the release.</p> +infrastructure, release 2.0. Here we describe the status of LLVM, including any +known problems and major improvements from the previous release. All LLVM +releases may be downloaded from the <a href="http://llvm.org/releases/";>LLVM +releases web site</a>. <p>For more information about LLVM, including information about the latest release, please check out the <a href="http://llvm.org/";>main LLVM @@ -61,8 +58,18 @@ <div class="doc_text"> -<p>This is the tenth public release of the LLVM Compiler Infrastructure. This -release incorporates a large number of enhancements, new features, and bug +<p>This is the eleventh public release of the LLVM Compiler Infrastructure. +Being the first major release since 1.0, we took this as an opportunity to +break backwards compatibility with the LLVM 1.x bytecode and .ll file format. +If you have LLVM 1.9 .ll files that you would like to upgrade to LLVM 2.x, we +recommend the use of the stand alone <a href=#llvm-upgrade">llvm-upgrade</a> +tool. We intend to keep compatibility with .ll and .bc formats within the 2.x +release series.</p> + +<p>Note that while + This +release +incorporates a large number of enhancements, new features, and bug fixes. We recommend that all users of previous LLVM versions upgrade. </p> @@ -70,37 +77,7 @@ <!--=========================================================================--> <div class="doc_subsection"> -<a name="newfeatures">New Features in LLVM 1.9</a> -</div> - -<!--_________________________________________________________________________--> -<div class="doc_subsubsection"><a name="x86-64">New X86-64 Backend</a></div> -<div class="doc_text"> -<p>LLVM 1.9 now fully supports the x86-64 instruction set on Mac OS/X, and -supports it on Linux (and other operating systems) when compiling in -static -mode. LLVM includes JIT support for X86-64, and supports both Intel EMT-64T -and AMD-64 architectures. The X86-64 instruction set permits addressing a -64-bit addressing space and provides the compiler with twice the -number of integer registers to use.</p> -</div> - -<!--_________________________________________________________________________--> -<div class="doc_subsubsection"><a name="lto">Link-Time Optimization integration -with native linkers</a></div> -<div class="doc_text"> -<p>LLVM now includes <a href="LinkTimeOptimization.html">liblto</a> which can -be used to integrate LLVM Link-Time Optimization support into a native linker. -This allows LLVM .bc to transparently participate with linking an application, -even when some .o files are in LLVM form and some are not.</p> -</div> - -<!--_________________________________________________________________________--> -<div class="doc_subsubsection"><a name="dwarf">DWARF debugging -support for Linux, Cygwin and MinGW on X86</a></div> -<div class="doc_text"> -<p>llvm-gcc4 now supports generating debugging info for Linux, Cygwin and MinGW. -This extends the PPC/Darwin and X86/Darwin debugging support available in the -1.8 release. DWARF is a standard debugging format used on many platforms.</p> +<a name="newfeatures">New Features in LLVM 2.0</a> </div> <!--_________________________________________________________________________--> @@ -111,17 +88,7 @@ Significant changes include:</p> <ul> -<li>LLVM includes a new 'predicate simplifier' pass, which - currently performs dominator tree-based optimizations.</li> -<li>The complete loop unroll pass now supports unrolling of - multiple basic block loops.</li> -<li>The 'globalopt' pass can now perform the scalar replacement of - aggregates transformation on some heap allocations.</li> -<li>The globalsmodref-aa alias analysis can now track 'indirect pointer - globals' more accurately.</li> -<li>The instruction combiner can now perform element propagation -analysis of vector expressions, eliminating computation of vector elements -that are not used.</li> +<li></li> </ul> </div> @@ -137,41 +104,21 @@ </p> <ul> -<li>LLVM now includes a late branch folding pass which optimizes code - layout, performs several branch optzns, and deletes unreachable code.</li> -<li>The code generator now support targets that have pre/post-increment - addressing modes.</li> -<li>LLVM now supports dynamically-loadable register allocators and - schedulers.</li> -<li>LLVM 1.9 includes several improvements to inline asm support, - including support for new constraints and modifiers.</li> -<li>The register coalescer is now more aggressive than before, - allowing it to eliminate more copies.</li> +<li></li> </ul> <p>In addition, the LLVM target description format has itself been extended in several ways:</p> <ul> -<li>tblgen now allows definition of '<a - href="TableGenFundamentals.html#multiclass">multiclasses</a>' which can be - used to factor instruction patterns more aggressively in .td files.</li> -<li>LLVM has a new TargetAsmInfo class which captures a variety of - information about the target assembly language format.</li> -<li>.td files now support "<tt>${:foo}</tt>" syntax for encoding - subtarget-specific assembler syntax into instruction descriptions.</li> +<li></li> </ul> <p>Further, several significant target-specific enhancements are included in -LLVM 1.9:</p> +LLVM 2.0:</p> <ul> -<li>The LLVM ARM backend now supports more instructions - and the use of a frame pointer. It is now possible to build - libgcc and a simple cross compiler, but it is not considered "complete" yet. - </li> -<li>LLVM supports the Win32 dllimport/dllexport linkage and - stdcall/fastcall calling conventions.</li> +<li></li> </ul> </div> @@ -179,51 +126,15 @@ <!--_________________________________________________________________________--> <div class="doc_subsubsection"><a name="other">Other Improvements</a></div> <div class="doc_text"> -<p>This release includes many other improvements, including improvements to - the optimizers and code generators (improving the generated code) changes to - speed up the compiler in many ways (improving algorithms and fine tuning - code), and changes to reduce the code size of the compiler itself.</p> +<p></p> <p>More specific changes include:</p> <ul> -<li>The llvm-test framework now supports SPEC2006.</li> -<li>LLVM now includes a <a href="GetElementPtr.html">FAQ about the -<tt>getelementptr</tt> instruction</a>.</li> -<li>Bugpoint now supports a new "<tt>-find-bugs</tt>" mode. This mode makes - bugpoint permute pass sequences to try to expose bugs due to pass - sequencing.</li> -<li>The JIT now supports lazily streaming code from multiple modules at a - time, implicitly linking the code as it goes.</li> +<li></li> </ul> </div> -<!--=========================================================================--> -<div class="doc_subsection"> -<a name="apichanges">Significant API Changes in LLVM 1.9</a> -</div> - -<div class="doc_text"> - -<p>Several significant API changes have been made. If you are maintaining -out-of-tree code, please be aware that:</p> - -<ul> -<li>The ConstantSInt and ConstantUInt classes have been merged into the - ConstantInt class.</li> -<li><p>As a step towards making LLVM's integer types signless, several new -instructions have been added to LLVM. The <tt>Div</tt> instruction is now -<tt>UDiv</tt>, <tt>SDiv</tt>, and <tt>FDiv</tt>. The <tt>Rem</tt> instruction -is now <tt>URem</tt>, <tt>SRem</tt> and <tt>FRem</tt>. See the -<a href="LangRef.html">Language Reference</a> for details on these new -instructions.</p> -<li><p><tt>ConstantBool::True</tt> and <tt>ConstantBool::False</tt> have been - renamed to <tt>ConstantBool::getTrue()</tt> and - <tt>ConstantBool::getFalse()</tt>.</p></li> -<li>The 'analyze' tool has been merged into the 'opt' tool.</li> - -</ul> -</div> <!-- *********************************************************************** --> @@ -307,9 +218,7 @@ <ul> <li>The X86 backend does not yet support <a href="http://llvm.org/PR879";>inline - assembly that uses the X86 floating point stack</a>. See the <a - href="http://llvm.org/PR879";>bug</a> for details on workarounds on - Linux.</li> + assembly that uses the X86 floating point stack</a>.</li> </ul> </div> @@ -324,8 +233,6 @@ <ul> <li><a href="http://llvm.org/PR642";>PowerPC backend does not correctly implement ordered FP comparisons</a>.</li> -<li>The 64-bit PowerPC backend is not fully stable. If you desire PPC64 support, - please use mainline CVS LLVM, which has several important bug fixes.</li> </ul> </div> @@ -415,6 +322,7 @@ <li>Defining vararg functions is not supported (but calling them is ok).</li> +<li>The Itanium backend has bitrotted somewhat.</li> </ul> </div> @@ -680,7 +588,7 @@ src="http://www.w3.org/Icons/valid-html401"; alt="Valid HTML 4.01!" /></a> <a href="http://llvm.org/";>The LLVM Compiler Infrastructure</a><br> - Last modified: $Date: 2007/04/04 04:14:31 $ + Last modified: $Date: 2007/05/09 04:58:11 $ </address> </body> _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
