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| -rw-r--r-- | docs/ReleaseNotes-2.6.html | 138 |
1 files changed, 127 insertions, 11 deletions
diff --git a/docs/ReleaseNotes-2.6.html b/docs/ReleaseNotes-2.6.html index 98e3565e78..df96aa5e4d 100644 --- a/docs/ReleaseNotes-2.6.html +++ b/docs/ReleaseNotes-2.6.html @@ -52,24 +52,140 @@ current one. To see the release notes for a specific release, please see the </div> -<!-- Unfinished features in 2.5: - Machine LICM + Many new papers added to /pubs/ + Machine LICM, hoists things like constant pool loads, loads from readonly stubs, vector constant synthesization code, etc. Machine Sinking - target-specific intrinsics + Regalloc improvements for commuting, various spiller peephole optimizations, cross-class coalescing. + Support for debug line numbers when optimization enabled gold lto plugin - pre-alloc splitter, strong phi elim - <tt>llc -enable-value-prop</tt>, propagation of value info - (sign/zero ext info) from one MBB to another - debug info for optimized code + + target-specific intrinsics (r63765) + <tt>llc -enable-value-prop</tt>, propagation of value info (sign/zero ext info) from one MBB to another interpreter + libffi + LLVMContext + Preliminary support for addrspace 256 -> GS, 257 -> FS, known problems: CodeGenerator.html#x86_memory + +Add support for the PowerPC 64-bit SVR4 ABI. + + NSW/NUW/exact div + Inbounds for GEP + SRoA improvements for vector unions, memset, arbitrary weird bitfield accesses etc. It now produces "strange" sized integers. + pre-alloc splitter?? + Callgraph + SCCPassMgr?? + X86: Support for softfloat modes, typically used by OS kernels. + MC: + MCSection, MCAsmInfo + MCInstPrinter did it make it in? + MCInst (X86 using it so far) + Rewrite of X86 GV selection logic: TargetOperand flags on ExternalSymbol, GV, etc operands. + Can parse and re-print out an darwin-x86 .s file. + TargetLoweringObjectFile, MCSectionKind + Verrrry early start of a macho writer. + + ELF Writer? How stable? + + LSR promotes int induction variables to 64-bit on 64-bit targets, major perf boost for numerical code. + LSR now analyzes pointer expressions (e.g. getelementptrs), not just integers. + Stack slot coloring for register spills (denser stack frames) + SelectionDAGS: New BuildVectorSDNode (r65296), and ISD::VECTOR_SHUFFLE (r69952 / PR2957) + New PrettyStackTrace, crashes of llvm tools should give some indication of what the compiler was doing at the time of the crash (e.g. running a pass), and print out command line arguments. + new linkage types linkonce_odr, weak_odr, linker_private, and available_externally. + Inliner reuse stack space when inlining arrays? + + Regalloc hints for allocation stuff: Evan r73381/r73671. Finished/enabled? + API Cleanup: + no use of hash_set/hash_map, no more llvm::OStream + Use raw_ostream for everything, killed off llvm/Streams.h and DOUT + + Mips now supports O32 Calling Convention + + StringRef class, Twine class. + New BlackFin backend. + + Shrink wrapping support in PEI, what is the state of it? + + X86-64: better modeling of implicit zero extensions, eliminates a lot of redundant zexts + X86-64 TLS support for local exec and initial exec. + X86 - Better modeling of H registerts as subregs. + Getelementpr instruction now allows any integer type for array/pointer indexes. + + include/llvm/Analysis/LiveValues.h => dead?? + lib/Analysis/LoopVR.cpp ==> dead?? + include/llvm/CodeGen/LazyLiveness.h ==> dead? + lib/Transforms/IPO/MergeFunctions.cpp ==> dead? + llvm/Analysis/PointerTracking.h ==> dead?? + PRedSimplify -> Ask vmkit if it is still useful and for testcases. + + ARM calling convention code is now tblgen generated instead of manual. + ARM: NEON support. neonfp for doing single precision fp with neon instead of VFP. + Tblgen now supports multiclass inheritance. + Unladen swallow as user? + Loop index split disabled by default? + + New WeakVH and AssertingVH and CallbackVH classes. + New llvm/ADT/Triple class. + Removed the IA64 backend. + Profile info improvements by Andreas Neustifter. + PostRA scheduler improvements David Goodwin. + + New MSP430 and SystemZ backends. + llvm-gcc now supports a new TCE target. + klee web page at klee.llvm.org + New llvm/System/Atomic.h, llvm/System/RWMutex.h for portable atomic ops, rw locks. + llvm_start_multithreaded: ProgrammersMAnual.html#threading + + Tablegen now supports a number of new string and list operations like + !(subst), !(foreach), !car, !cdr, !null, !if, !cast. + New fadd, fsub, fmul instructions and classes. + New MachineVerifier pass. + Enabled GVN Load PRE. + ARM AAPCS-VFP hard float ABI is supported. + + LLVM build now builds all libraries as .a files instead of some + libraries as relinked .o files. This requires some APIs like + InitializeAllTargets.h. TargetRegistry! + + ARM Thumb2 support: status? + CBE status: not part of the release criteria. + + New SourceMgr, SMLoc classes for simple parsers with caret diagnostics and #include support, (used by + tablegen, llvm-mc, the .ll parser, FileCheck, etc) + FileCheck! + CHECK-NEXT + New compiler-rt project. + New Static Single Information (SSI) construction pass (not used by anything yet, experimental). + + llvm_report_error() error handling API (llvm/Support/ErrorHandling.h) + + x86: Vector icmp/fcmp now work with SSE codegen. + X86: all global variable reference logic is now in ClassifyGlobalReference. + JIT support for oprofile (r75279), configure with --with-oprofile. Now we get line # and function info for JIT'd functions. + Mention gcc plugin. + + New EngineBuilder class for creating JITs: r76276 Reid Kleckner <reid at kleckner.net> + + -asm-verbose now prints location info (with -g) and loop nest info. + JIT now supports generating more than 16M of code. + +removed the BigBlock register allocator, it had bitrotted. +Target intrinsics can now return multiple results. + + SSE 4.2 support. + Ada bindings for LLVM IR. + Many extensions to the C APIs. + +<!-- Unfinished features in 2.6: + Mention gcc plugin. + strong phi elim + variable debug info for optimized code postalloc scheduler: anti dependence breaking, hazard recognizer? - -initial support for debug line numbers when optimization enabled, not useful in - 2.5 but will be for 2.6. - + metadata + loop dependence analysis --> <!-- for announcement email: + Logo web page. + llvm devmtg + compiler_rt --> <!-- *********************************************************************** --> |