diff --git a/docs/ReleaseNotes.txt b/docs/ReleaseNotes.txt index 2761a056..4d2723dc 100644 --- a/docs/ReleaseNotes.txt +++ b/docs/ReleaseNotes.txt @@ -1,3 +1,59 @@ +=== v1.8.2 === (29 May 2015) + +An ISPC update with several important stability fixes and an experimental +AVX512 support. + +Current level of AVX512 support is targeting the new generation of Xeon Phi +codename Knights Landing. It's implemented in two different ways: as generic and +native target. Generic target is similar to KNC support and requires Intel C/C++ +Compiler (15.0 and newer) and is availiable in regular ISPC build, which is +based on LLVM 3.6.1. For the native AVX512 target, we have a separate ISPC +build, which is based on LLVM trunk (3.7). This build is less stable and has +several known issues. Nevertheless, if you are interested in AVX512 support for +your code, we encourage you to try it and report the bugs. We actively working +with LLVM maintainers to fix all AVX512 bugs, so your feedback is important for +us and will ensure that bugs affecting your code are fixed by LLVM 3.7 release. + +Other notable changes and fixes include: + +* Broadwell support via --cpu=broadwell. + +* Changed cpu naming to accept cpu codenames. Check help for more details. + +* --cpu switch disallowed in multi-target mode. + +* Alignment of structure fields (in generated header files) is changed to be + more consistent regardless used C/C++ compiler. + +* --dllexport switch is added on Windows to make non-static functions DLL + export. + +* --print-target switch is added to dump details of LLVM target machine. + This may help you to debug issues with code generation for incorrect target + (or more likely to ensure that code generation is done right). + +* A bug was fixed, which triggered uniform statements to be executed with + all-off mask under some circumstances. + +* The restriction for using some uniform types as return type in multi-target + mode with targets of different width was relaxed. + +Also, if you are using ISPC for code generation for current generation of +Xeon Phi (Knights Corner), the following changes are for you: + +* A bunch of stability fixes for KNC. + +* A bug, which affects projects with multiple ISPC source files compiled with generic + target is fixed. As side effect, you may see multiple warnings about unused static + functions - you need to add "-wd177" switch to ICC compiling generic output files. + +The release includes LLVM 3.6.1 binaries for Linux, MacOS, Windows and Windows based +cross-compiler for Sony PlayStation4. LLVM 3.5 based experimental Linux binary with +NVPTX support (now supporting also K80). + +Native AVX512 support is available in the set of less stable LLVM 3.7 based binaries +for Linux, MacOS and Windows. + === v1.8.1 === (31 December 2014) A minor update of ``ispc`` with several important stability fixes, namely: diff --git a/docs/ispc.rst b/docs/ispc.rst index 81393037..26aaec5c 100644 --- a/docs/ispc.rst +++ b/docs/ispc.rst @@ -51,6 +51,7 @@ Contents: + `Updating ISPC Programs For Changes In ISPC 1.5.0`_ + `Updating ISPC Programs For Changes In ISPC 1.6.0`_ + `Updating ISPC Programs For Changes In ISPC 1.7.0`_ + + `Updating ISPC Programs For Changes In ISPC 1.8.2`_ * `Getting Started with ISPC`_ @@ -326,6 +327,16 @@ older versions: * get_ProgramCount() was moved from stdlib to examples/util/util.isph file. You need to include this file to be able to use this function. +Updating ISPC Programs For Changes In ISPC 1.8.2 +------------------------------------------------ + +The release doesn't contain language changes, which may affect compatibility with +older versions. Though you may want be aware of the following: + +* Mangling of uniform types was changed to not include varying width, so now you + may use uniform structures and pointers to uniform types as return types in + export functions in multi-target compilation. + Getting Started with ISPC ========================= @@ -5120,7 +5131,7 @@ countries. * Other names and brands may be claimed as the property of others. -Copyright(C) 2011-2014, Intel Corporation. All rights reserved. +Copyright(C) 2011-2015, Intel Corporation. All rights reserved. Optimization Notice