diff options
Diffstat (limited to 'docs/ReleaseNotes.html')
| -rw-r--r-- | docs/ReleaseNotes.html | 115 |
1 files changed, 74 insertions, 41 deletions
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html index 2400070..885a077 100644 --- a/docs/ReleaseNotes.html +++ b/docs/ReleaseNotes.html @@ -71,22 +71,44 @@ href="http://llvm.cs.uiuc.edu/releases/">releases page</a>.</p> <div class="doc_text"> <p>This is the second public release of the LLVM compiler infrastructure. This -release implements the following new features:</p> +release is primarily a bugfix release, dramatically improving the C/C++ +front-end, and improving support for C++ in the LLVM core. This release also +features a few new features, such as a simple profiler, support for Mac OS/X, +and better interoperability with external source bases.</p> + +<p>At this time, LLVM is known to correctly compile the SPEC CPU2000 benchmarks +(X86 only), the Olden benchmarks, and the Ptrdist benchmarks along with +<b>many</b> other programs. LLVM now also works with a fairly broad variety of +C++ programs, though it has still received much less testing than the C +front-end. +</p> + +<p> +Note that the Sparc and X86 backends do not currently support exception throwing +or long jumping (including 253.perlbmk in SPEC). For these programs, you must +use the C backend. Support for unwinding will be added in a future release. +</p> + + +<!--=========================================================================--> +<div class="doc_subsubsection"> +This release implements the following new features: +</div> <ol> <li><a href="http://mail.cs.uiuc.edu/pipermail/llvmdev/2003-November/000528.html">A new LLVM profiler, similar to gprof</a> is available</li> -<li>LLVM and the C/C++ front-end now compile on Mac OSX! Mac OSX users can +<li>LLVM and the C/C++ front-end now compile on Mac OS/X! Mac OS/X users can now explore the LLVM optimizer with the C backend (note that LLVM requires GCC -3.3 on Mac OSX).</li> +3.3 on Mac OS/X).</li> <li>LLVM has been <a href="http://mail.cs.uiuc.edu/pipermail/llvmdev/2003-November/000554.html">moved into an 'llvm' C++ namespace</a>, for easier integration with third-party -code. Note that due to a bug in GDB 5.x, to debug namespacified LLVM code, -you will need to upgrade to GDB 6.</li> +code. Note that lack of namespace handling in GDB 5.x, you will probably want to +upgrade to GDB 6 or better to debug LLVM code.</li> <li> The build system now copies Makefiles dynamically from the source tree to the @@ -110,7 +132,11 @@ The <tt>configure</tt> script will now configure all projects placed in the </li> </ol> -<p>In this release, the following missing features were implemented:</p> + +<!--=========================================================================--> +<div class="doc_subsubsection"> +In this release, the following missing features were implemented: +</div> <ol> <li><a href="http://llvm.cs.uiuc.edu/PR88">The interpreter does not support @@ -124,8 +150,12 @@ files</a></li> </ol> -<p>In this release, the following Quality of Implementation issues were -fixed:</p> + +<!--=========================================================================--> +<div class="doc_subsubsection"> +In this release, the following Quality of Implementation issues were +fixed: +</div> <ol> @@ -152,57 +182,69 @@ cases).</li> <a href="http://llvm.cs.uiuc.edu/PR11">generated N^2 amounts of duplicated cleanup code</a> in some cases.</li> </ol> -<p>In this release, the following bugs in the previous release were fixed:</p> + +<!--=========================================================================--> +<div class="doc_subsubsection"> +In this release, the following bugs in the previous release were fixed: +</div> + +<p>Bugs in the LLVM Core:</p> <ol> <li><a href="http://llvm.cs.uiuc.edu/PR57">[inliner] Inlining invoke with PHI in unwind target is broken</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR58">[linker] linkonce globals should link successfully to external globals</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR59">C++ frontend can crash when compiling virtual base classes</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR62">C backend fails on constant cast expr to ptr-to-anonymous struct</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR63">#ident is not recognized by C frontend</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR64">[constmerge] Constant merging pass merges constants with external linkage</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR65">C front-end miscompiles the builtin_expect intrinsic!</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR66">[scalarrepl] Scalar Replacement of aggregates is decimating structures it shouldn't be</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR67">1.0 precompiled libstdc++ does not include wchar_t support</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR68">llvmgcc asserts when compiling functions renamed with asm's</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR69">C frontend crashes on some programs with lots of types.</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR70">[instcombine] Resolving invoke inserts cast after terminator</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR71">llvm-as crashes when labels are used in phi nodes</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR72">[build problem] Callgraph.cpp not pulled in from libipa.a</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR77">Variables in scope of output setjmp -calls should be volatile</a>. Note that this does not effect correctness on -many platforms, such as X86.</li> -<li><a href="http://llvm.cs.uiuc.edu/PR79">llvm-gcc crashes compiling global union initializer</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR80">C front-end crash on empty structure</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR81">CFrontend crashes when compiling C99 compound expressions</a></li> +calls should be volatile</a> (Note that this does not effect correctness on +many platforms, such as X86).</li> <li><a href="http://llvm.cs.uiuc.edu/PR83">[X86] Emission of global bool initializers broken</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR87">llvm-gcc infinite loops on "case MAXINT:"</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR89">[C++] Catch blocks make unparsable labels</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR90">[C++] Initializing array with constructable objects fail</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR91">[gccld] The -r (relinking) option does not work correctly</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR92">[bcreader] Cannot read shift constant expressions from bytecode file</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR93">[lowersetjmp] Lowersetjmp pass breaks dominance properties!</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR94">llvm-gcc tries to add bools</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR95">SymbolTable::getUniqueName is very inefficient</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR98">[buildscripts] Building into objdir with .o in it fails</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR101">[setjmp/longjmp] Linking C programs which use setjmp/longjmp sometimes fail with references to the C++ runtime library!</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR104">[c++] C++ Frontend lays out superclasses like anonymous bitfields!</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR107">AsmParser Misses Symbol Redefinition Error</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR108">gccld -Lfoo -lfoo fails to find ./foo/libfoo.a</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR110">[bcreader] Incorrect cast causes misread forward constant references</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR112">Casting a string constant to void crashes llvm-gcc</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR116">[adce] ADCE considers blocks without postdominators to be unreachable</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR54">C front-end miscompiles unsigned enums whose LLVM types are signed</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR123">[X86] div and rem constant exprs invalidate iterators!</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR130">[vmcore] Symbol table doesn't rename colliding variables during type resolution</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR97">bugpoint must not pass -R<directory> to Mach-O linker</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR140">gccld produces a runner script that includes command-line options to load the necessary shared objects</a></li> +</ol> + + +<p>Bugs in the C/C++ front-end:</p> + +<ol> +<li><a href="http://llvm.cs.uiuc.edu/PR59">C++ frontend can crash when compiling virtual base classes</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR62">C backend fails on constant cast expr to ptr-to-anonymous struct</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR63">#ident is not recognized by C frontend</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR65">C front-end miscompiles the builtin_expect intrinsic!</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR67">1.0 precompiled libstdc++ does not include wchar_t support</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR68">llvmgcc asserts when compiling functions renamed with asm's</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR69">C frontend crashes on some programs with lots of types.</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR79">llvm-gcc crashes compiling global union initializer</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR80">C front-end crash on empty structure</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR81">CFrontend crashes when compiling C99 compound expressions</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR87">llvm-gcc infinite loops on "case MAXINT:"</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR89">[C++] Catch blocks make unparsable labels</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR90">[C++] Initializing array with constructable objects fail</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR94">llvm-gcc tries to add bools</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR104">[c++] C++ Frontend lays out superclasses like anonymous bitfields!</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR54">C front-end miscompiles unsigned enums whose LLVM types are signed</a></li> +<li><a href="http://llvm.cs.uiuc.edu/PR112">Casting a string constant to void crashes llvm-gcc</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR125">[llvmg++] Enum types are incorrectly shrunk to smaller than 'int' size</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR128">[llvmg++] Cannot use pointer to member to initialize global</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR130">[vmcore] Symbol table doesn't rename colliding variables during type resolution</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR131">[llvm-gcc] ?: operator as lvalue not implemented</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR133">[C/C++] Bogus warning about taking the address of 'register' variable</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR97">bugpoint must not pass -R<directory> to Mach-O linker</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR113">crash assigning into an array in a struct which contains a bitfield</a>.</li> <li><a href="http://llvm.cs.uiuc.edu/PR6">Oversized integer bitfields cause crash</a></li> -<li><a href="http://llvm.cs.uiuc.edu/PR140">gccld produces a runner script that includes command-line options to load the necessary shared objects</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR141">[llvm-gcc] Bitfields & large array don't mix well</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR132">[llvm-gcc] Complex division is not supported</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR143">[llvm-gcc] Illegal union field reference</a></li> @@ -211,13 +253,8 @@ many platforms, such as X86.</li> <li><a href="http://llvm.cs.uiuc.edu/PR155">[llvm-gcc] crash on union initialization</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR124">[llvm-g++] ?: expressions do not run correct number of destructors!</a></li> <li><a href="http://llvm.cs.uiuc.edu/PR157">[llvm-gcc] Pointer & constant results in invalid shift</a></li> -</ol><p> -<p>At this time, LLVM is known to work properly with SPEC CPU 2000 (X86 only), -the Olden benchmarks, and the Ptrdist benchmarks among many other programs. -Note however that the Sparc and X86 backends do not currently support exception -throwing or long jumping (including 253.perlbmk in SPEC). For these programs, -you must use the C backend.</p> +</ol> </div> @@ -577,10 +614,6 @@ Infinity.</li> supported</a>. This should not affect LLVM produced by the C or C++ frontends.</li> -<li>The code produces by the C back-end has only been tested with the Sun CC, -GCC, and Intel compilers. It is possible that it will have to be adjusted to -support other C compilers.</li> - </ul> </div> |