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| author | Chris Lattner <sabre@nondot.org> | 2004-08-16 00:20:18 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-08-16 00:20:18 +0000 |
| commit | 5c3389a084dfa2843c21cdda42b83a2dad785aec (patch) | |
| tree | cc70fe3fea84c909191eef53bf47b6002b033942 /docs | |
| parent | cc22e9f406cf21e3a2036bf6628ee7a5c850d42c (diff) | |
| download | llvm-5c3389a084dfa2843c21cdda42b83a2dad785aec.tar.gz llvm-5c3389a084dfa2843c21cdda42b83a2dad785aec.tar.bz2 llvm-5c3389a084dfa2843c21cdda42b83a2dad785aec.tar.xz | |
Scrub all LLVM 1.3 stuff, changing over to 1.4. Add info about PR419,
which is now fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15800 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ReleaseNotes.html | 198 |
1 files changed, 13 insertions, 185 deletions
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html index e152c7f21e..610de1e4fa 100644 --- a/docs/ReleaseNotes.html +++ b/docs/ReleaseNotes.html @@ -3,11 +3,11 @@ <html> <head> <link rel="stylesheet" href="llvm.css" type="text/css"> - <title>LLVM 1.3 Release Notes</title> + <title>LLVM 1.4 Release Notes</title> </head> <body> -<div class="doc_title">LLVM 1.3 Release Notes</div> +<div class="doc_title">LLVM 1.4 Release Notes</div> <ol> <li><a href="#intro">Introduction</a></li> @@ -41,10 +41,10 @@ <div class="doc_text"> <p>This document contains the release notes for the LLVM compiler -infrastructure, release 1.3. Here we describe the status of LLVM, including any +infrastructure, release 1.4. Here we describe the status of LLVM, including any known problems and bug fixes from the previous release. The most up-to-date version of this document can be found on the <a -href="http://llvm.cs.uiuc.edu/releases/1.3/">LLVM 1.3 web site</a>. If you are +href="http://llvm.cs.uiuc.edu/releases/1.4/">LLVM 1.4 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> @@ -69,12 +69,7 @@ href="http://llvm.cs.uiuc.edu/releases/">releases page</a>.</p> <div class="doc_text"> -<p>This is the fourth public release of the LLVM compiler infrastructure. This -release primarily improves the <a href="#codequality">performance of the -code</a> produced by all aspects of the LLVM compiler, adds many <a -href="#newfeatures">new features</a>, <a href="#bugfix">fixes a few -bugs</a>, speeds up the compiler, and introduces a new (experimental) -PowerPC code generator.</p> +<p>This is the fifth public release of the LLVM compiler infrastructure.</p> <p> At this time, LLVM is known to correctly compile and run all C & C++ SPEC CPU95 & 2000 benchmarks, the Olden benchmarks, and the Ptrdist @@ -91,67 +86,7 @@ with a broad variety of C++ programs.</p> <div class="doc_text"> <ol> -<li>The LLVM <a href="LangRef.html#i_select"><tt>select</tt></a> instruction is -now fully implemented and supported by all transformations, native code -generators, and the interpreter.</li> -<li>Bugpoint can now narrow down code-generation bugs to a loop nest, where -before it could only narrow them down to a function being miscompiled.</li> -<li><a href="http://llvm.cs.uiuc.edu/PR40">Bugpoint can now debug arbitrary -modes of llc</a> and lli, by passing them command line flags (e.g. -<tt>-regalloc=linearscan</tt>).</li> -<li>The Control Flow Graph in the native code generators is no longer -constrained to be the same as the CFG for the LLVM input code.</li> -<li>The LLVM induction variable analysis routines have been rewritten.</li> -<li>LLVM now has new loop unrolling and loop unswitching passes.</li> -<li>The induction variable substitution pass performs linear function test -replacement and exit value replacement optimizations.</li> -<li>LLVM now has first-class support for <a -href="GarbageCollection.html">Accurate Garbage Collection</a>, enabling the use -of aggressive copying and generational collectors.</li> -<li>LLVM now includes a simple implementation of <a -href="AliasAnalysis.html#anders-aa">Andersen's interprocedural alias -analysis</a> algorithm.</li> -<li>Bugpoint can <a href="http://llvm.cs.uiuc.edu/PR327">extract individual -basic blocks</a> to track down reduce miscompilation testcases.</li> -<li>LLVM and the C front-end now work under Win32 using the -<a href="http://www.cygwin.com">Cygwin</a> runtime libraries. -This includes the JIT compiler.</li> -<li>The LLVM code generator is now being <a -href="CodeGenerator.html">documented</a>.</li> -<li>LLVM includes a new tool, <a -href="CommandGuide/html/llvm-bcanalyzer.html">llvm-bcanalyzer</a>, This tool -can compute various statistics and dump information about LLVM bytecode -encoding.</li> -<li>The <a href="BytecodeFormat.html">LLVM bytecode file format</a> is now -documented.</li> -<li>LLVM now provides an <a -href="LangRef.html#i_isunordered">llvm.isunordered</a> intrinsic for efficient -implementation of unordered floating point comparisons.</li> -<li>The llvmgcc front-end now supports the GCC builtins for ISO C99 floating -point comparison macros (e.g., <tt>__builtin_islessequal</tt>).</li> -<li>We now generate <a href="CommandGuide/">HTML documentation and man pages</a> -for the tools from a single source (perl-style POD files).</li> -<li>The LLVM code generator can now dynamically load targets from shared -objects.</li> -<li>LLVM now includes a "skeleton" target, which makes it easier to get -started porting LLVM to new architectures.</li> -<li>The linear scan register allocator is now enabled by default in the -target-independent code generator.</li> -<li>LLVM now includes a dead store elimination pass.</li> -<li>Bugpoint can now debug miscompilations that lead to the program going -into an infinite loop.</li> -<li>LLVM now provides interfaces to support ML-style pattern matching on the -LLVM IR.</li> -<li>LLVM now includes a <a -href="AliasAnalysis.html#globalsmodref">context-sensitive mod/ref analysis</a> -for global variables, which is now enabled by default in gccld.</li> -<li>LLVM can now autogenerate assembly printers for code generators from the -tablegen description of the target (before they were hand coded).</li> -<li>All LLVM tools will now respond to the -<a href="http://llvm.cs.uiuc.edu/PR413"><tt>--version</tt> option</a> which -will tell you the version of LLVM on which the tool is based.</li> -<li>An experimental PowerPC backend has been added, capable of compiling several -SPEC benchmarks.</li> +<li></li> </ol> </div> @@ -165,18 +100,8 @@ In this release, the following missing features were implemented: <div class="doc_text"> <ol> -<li><a href="http://llvm.cs.uiuc.edu/PR82">LLVM cannot handle structures with -more than 256 elements</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR38">[bugpoint] External functions used in -non-instruction entities, such as global constant initializer</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR178">Stacker does not handle targets -with 64-bit pointers.</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR290">Bugpoint doesn't support -uses of external fns by immediate constant exprs</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR407">Can't add function passes that -depend on immutable passes to the FunctionPassManager</a>.</li> -<li><a href="http://llvm.cs.uiuc.edu/PR308">Archive file reader doesn't -understand abbreviated names in headers</a></li> +<li><a href="http://llvm.org/PR419">JIT interface should support arbitrary + calls</a></li> </ol> </div> @@ -190,28 +115,7 @@ issues were fixed:</a> <div class="doc_text"> <ol> -<li><a href="http://llvm.cs.uiuc.edu/PR305">LLVM tools will happily spew -bytecode onto your terminal</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR329">[llvmgcc] type names are not emitted -for structure typedefs</a></li> -<li>All documentation is now conformant to the HTML 4.01 (Strict) level.</li> -<li>The spurious "WARNING: Found global types that are not compatible" warning -produced when linking C++ programs has been fixed.</li> -<li><a href="http://llvm.cs.uiuc.edu/PR391">lli Doesn't Handle Exceptions From -Bytecode Reader</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR392">Global Vars Have (Somewhat) Limited - Type Range</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR341">operator<< on a Value* now -prints the address of the object instead of its contents.</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR402">Bytecode Enhancements -Needed</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR404">[loopsimplify] Loop simplify is -really slow on 252.eon</a></li> -<li><a href="Http://llvm.cs.uiuc.edu/PR122">[code-cleanup] SymbolTable class -cleanup, Type should not derive from Value, eliminate ConstantPointerRef -class</a>.</li> -<li>The memory footprint of the LLVM IR has been reduced substantially.</li> -<li>The LLVM linker and many core classes have been sped up substantially.</li> +<li></li> </ol> </div> @@ -223,14 +127,7 @@ In this release, the following build problems were fixed: <div class="doc_text"> <ol> -<li><a href="http://llvm.cs.uiuc.edu/PR301">Minor configure bugs with --disable/enable-povray and -disable-spec</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR289">shell scripts output by gccld don't -work if you change PATH</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR364">[llvmgcc] llvmgcc does not compile -with gcc 3.4</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR373">[llvmgcc] obstack.h relies on -obsolete casts-as-lvalues GCC extension</a></li> +<li></li> </ol> </div> @@ -242,51 +139,7 @@ improvements:</a> <div class="doc_text"> <ol> -<li>Fixed: <a href="http://llvm.cs.uiuc.edu/PR309">[vmcore] Code quality problem -due to long operand of getelementptr</a></li> - -<li>The X86 backend now generates substantially better code for 64-bit integer -and floating point operations.</li> - -<li>The -inline pass no longer inlines mutually recursive functions until it -hits the inlining threshold.</li> - -<li>The -inline pass no longer misses obvious inlining opportunities just -because the callee eventually calls into an external function.</li> - -<li>The -simplifycfg pass can now "if convert" simple statements into the -<tt>select</tt> instruction.</li> - -<li>The -loopsimplify pass can now break <a -href="http://llvm.cs.uiuc.edu/PR35">natural loops with multiple backedges</a> -into multiple nested loops. This enables a variety of subsequent -optimizations.</li> - -<li>The -adce pass can now eliminate calls to functions that do not not write to -memory.</li> - -<li>The link-time optimizer now runs the -prune-eh pass (to remove unused -exception handlers).</li> - -<li>The link-time optimizer now runs dead store elimination and uses a simple -interprocedural alias analysis.</li> - -<li>The -simplifycfg pass can now eliminate simple correlated branches (such as -"<tt>if (A < B && A < B)</tt>", and can turn short-circuiting -operators into the strict versions when useful (such as "<tt>if (A < B || A -> C)</tt>" into "<tt>if (A < B | A > C)</tt>"</li> - -<li>LLVM now has infrastructure for (simple and sparse conditional) constant -propagation of function calls. It currently supports a few math library -functions like sqrt/sin/cos/etc.</li> - -<li>The C backend now emits <a href="http://llvm.cs.uiuc.edu/PR334">syntactic -loops</a> in the code to help C compilers whose optimizers do not recognize -loops formed from gotos (like GCC).</li> - -<li>The SparcV9 backend no longers <a -href="http://llvm.cs.uiuc.edu/PR368">spills the null constant to the constant -pool</a>.</li> +<li></li> </ol> </div> @@ -301,38 +154,13 @@ were fixed:</a> <p>Bugs fixed in the LLVM Core:</p> <ol> -<li><a href="http://llvm.cs.uiuc.edu/PR306">[loopsimplify] Loop simplify -incorrectly updates dominator information</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR310">[tailduplicate] DemoteRegToStack -breaks SSA form</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR313">[X86] JIT miscompiles unsigned short -to floating point cast</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR330">[vmcore] Linker causes erroneous -asssertion</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR332">[adce] Crash handling unreachable -code that unwinds</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR333">[sparcv9] LLC can't emit 2 functions -of the same name, both having constant pools</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR337">[livevar] Live variables missed -physical register use of aliased definition</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR369">[X86] stackifier crash on floating -point setcc X, X</a></li> +<li></li> </ol> <p>Bugs in the C/C++ front-end:</p> <ol> -<li><a href="http://llvm.cs.uiuc.edu/PR298">[llvmgcc] Variable length array -indexing miscompiled</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR326">[llvmgcc] Crash on use of undeclared -enum type</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR355">[llvmgcc] Errors handling function -prototypes that take opaque structs by-value</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR374">[llvmgcc] Crash compiling variable -length array of structures</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR377">[llvmgcc] miscompilation of staticly -initialized unsigned bitfields</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR396">[llvm-gcc] Crash casting function to void</a></li> +<li></li> </ol> </div> |