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add a bunch of notes to myself, this is not intended to be gramatic or
make sense to anyone else. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128879 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
parent
612f7807c5
commit
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@ -61,8 +61,6 @@ current one. To see the release notes for a specific release, please see the
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</div>
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<!-- NOTE: last release for llvm-gcc -->
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<!--
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Almost dead code.
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lib/Transforms/IPO/MergeFunctions.cpp => consider for 3.0.
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@ -73,7 +71,6 @@ Almost dead code.
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combiner-aa?
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strong phi elim
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loop dependence analysis
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TBAA
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CorrelatedValuePropagation
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-->
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@ -111,31 +108,23 @@ integrating with other development tools. Clang is considered a
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production-quality compiler for C, Objective-C, C++ and Objective-C++ on x86
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(32- and 64-bit), and for darwin-arm targets.</p>
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<p>In the LLVM 2.9 time-frame, the Clang team has made many improvements:</p>
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<p>In the LLVM 2.9 time-frame, the Clang team has made many improvements in C,
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C++ and Objective-C support. C++ support is now generally rock solid, has
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been exercised on a broad variety of code, and has several new C++'0x features
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implemented (such as rvalue references and variadic templates). LLVM 2.9 has
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also brought in a large range of bug fixes and minor features (e.g. __label__
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support), and is much more compatible with the Linux Kernel.</p>
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<p>If Clang rejects your code that is built with another compiler, please take a
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look at the <a href="http://clang.llvm.org/compatibility.html">language
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compatibility</a> guide to make sure the issue isn't intentional or a known
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issue.
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</p>
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<ul>
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</ul>
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</div>
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<!--=========================================================================-->
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<div class="doc_subsection">
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<a name="clangsa">Clang Static Analyzer</a>
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</div>
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<div class="doc_text">
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<p>The <a href="http://clang-analyzer.llvm.org/">Clang Static Analyzer</a>
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project is an effort to use static source code analysis techniques to
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automatically find bugs in C and Objective-C programs (and hopefully <a
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href="http://clang-analyzer.llvm.org/dev_cxx.html">C++ in the
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future</a>!). The tool is very good at finding bugs that occur on specific
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paths through code, such as on error conditions.</p>
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<p>The LLVM 2.9 release...
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</p>
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</div>
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<!--=========================================================================-->
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<div class="doc_subsection">
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<a name="dragonegg">DragonEgg: GCC front-ends, LLVM back-end</a>
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@ -168,21 +157,6 @@ work yet.</li>
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</div>
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<!--=========================================================================-->
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<div class="doc_subsection">
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<a name="vmkit">VMKit: JVM Virtual Machine Implementation</a>
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</div>
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<div class="doc_text">
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<p>
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The <a href="http://vmkit.llvm.org/">VMKit project</a> is an implementation of
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a Java Virtual Machine (Java VM or JVM) that uses LLVM for static and
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just-in-time compilation.
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UPDATE.
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</p>
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</div>
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<!--=========================================================================-->
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<div class="doc_subsection">
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<a name="compiler-rt">compiler-rt: Compiler Runtime Library</a>
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@ -203,7 +177,9 @@ libgcc routines).</p>
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All of the code in the compiler-rt project is available under the standard LLVM
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License, a "BSD-style" license.
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NEW: MIT License as well.
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compiler_rt is now dual licensed under MIT and UIUC license
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Several minor changes for better ARM support.
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New in LLVM 2.9, UPDATE</p>
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@ -224,8 +200,9 @@ LLVM disassembler and the LLVM JIT.</p>
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<p>
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LLDB is in early development and not included as part of the LLVM 2.9 release,
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UPDATE!
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<!--
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but is mature enough to support basic debugging scenarios on Mac OS X in C,
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Objective-C and C++. We'd really like help extending and expanding LLDB to
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@ -249,6 +226,8 @@ delivering great performance.</p>
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<p>
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As of the LLVM 2.9 release, UPDATE!
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libc++ is now dual licensed under MIT and UIUC license
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<!--libc++ is virtually feature complete, but would
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benefit from more testing and better integration with Clang++. It is also
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looking forward to the C++ committee finalizing the C++'0x standard.-->
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@ -318,7 +297,70 @@ in this section.
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<p>LLVM 2.9 includes several major new capabilities:</p>
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<ul>
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last release for llvm-gcc
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TBAA
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Triple::normalize is new, llvm triples are always stored in normalized form internally.
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MC Assembler: X86 now generates much better diagnostics for common errors,
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is much faster at matching instructions, is much more bug-compatible with
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the GAS assembler, and is now generally useful for a broad range of X86
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assembly.
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New Nvidia PTX backend, not generally useful in 2.9 though.
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Much better debug info generated, particularly in optimized code situations.
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ARM Fast ISel
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ELF MC support
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X86: Reimplemented all of MMX to introduce a new LLVM IR x86_mmx type. Now
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random types like <2 x i32> are not iseld to mmx without emms.
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Some basic <a href="CodeGenerator.html#mc">internals documentation</a> for MC.
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MC Assembler support for .file and .loc.
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inline asm multiple alternative constraint support.
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LoopIdiom: memset/memcpy formation
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X86 support for FS/GS relative loads and stores using address space 256/257 are
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reliable now.
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ARM: New code placement pass.
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PointerTracking has been removed from mainline, moved to ClamAV.
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EarlyCSE pass.
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ARM: Improved code generation for Cortex-A8 and Cortex-A9 CPUs.
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Scheduler now models operand latency and pipeline forwarding.
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Major regalloc rewrite, not on by default for 2.9.
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MC assembler support for 3dNow! and 3DNowA instructions.
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LoopIndexSplit pass was removed, unmaintained.
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COFF support in the MC assembler has made a lot of progress in the 2.9
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timeframe, but is still not generally useful. Please see
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"http://llvm.org/bugs/showdependencytree.cgi?id=9100&hide_resolved=1" for open bugs"?
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New <a href="WritingAnLLVMPass.html#RegionPass">RegionPass</a> infrastructure
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for region-based optimizations.
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MicroBlaze: major updates for aggressive delay slot filler, MC-based assembly
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printing, assembly instruction parsing, ELF .o file emission, and MC
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instruction disassembler.
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</ul>
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Still todo: [101025-110228]
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</div>
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