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Diffstat (limited to 'lib/hipe/doc/src/notes.xml')
| -rw-r--r-- | lib/hipe/doc/src/notes.xml | 200 |
1 files changed, 198 insertions, 2 deletions
diff --git a/lib/hipe/doc/src/notes.xml b/lib/hipe/doc/src/notes.xml index 627794aee8..c190a89260 100644 --- a/lib/hipe/doc/src/notes.xml +++ b/lib/hipe/doc/src/notes.xml @@ -4,7 +4,7 @@ <chapter> <header> <copyright> - <year>2006</year><year>2016</year> + <year>2006</year><year>2017</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -31,6 +31,202 @@ </header> <p>This document describes the changes made to HiPE.</p> +<section><title>Hipe 3.17.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix HiPE bug for binary constructs like + <c><<X/utf8>></c> which could in rare cases + cause faulty results or VM crash.</p> + <p> + This fix affects both the <c>hipe</c> compiler and + <c>erts</c> runtime in an <em>incompatible</em> way. Old + hipe compiled files need to be recompiled to load and run + properly as native.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-14850 Aux Id: PR-1664 </p> + </item> + <item> + <p>The BEAM compiler chooses not to perform tailcall + optimisations for some calls in tail position, for + example to some built-in functions. However, when the + ErLLVM HiPE backend is used, LLVM may choose to perform + tailcall optimisation on these calls, breaking the + expected semantics.</p> + <p>To preserve the precise semantics exhibited by BEAM, + the 'notail' marker, present in LLVM since version 3.8, + is added to call instructions that BEAM has not turned + into tail calls, which inhibits LLVM from performing + tail-call optimisation in turn.</p> + <p> + Own Id: OTP-14886</p> + </item> + </list> + </section> + +</section> + +<section><title>Hipe 3.17</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix bug for hipe compiled code using + <c><<X/utf32>></c> binary construction that + could cause faulty result or even VM crash.</p> + <p> + On architectures other than x86_64, code need to be + recompiled to benefit from this fix.</p> + <p> + Own Id: OTP-14740</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Added documentation about limitations of hipe compared to + beam compiled code.</p> + <p> + Own Id: OTP-14767</p> + </item> + </list> + </section> + +</section> + +<section><title>Hipe 3.16.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> Fix a bug regarding map types that caused Dialyzer to + go into an infinite loop. A consequence of the fix is + that compound map keys such as maps and tuples sometimes + are handled with less precision than before. </p> + <p> + Own Id: OTP-14572 Aux Id: seq13319 </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + General Unicode improvements.</p> + <p> + Own Id: OTP-14462</p> + </item> + </list> + </section> + +</section> + +<section><title>Hipe 3.16</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix hipe compiler flags <c>o0</c> and <c>o1</c> that have + previously been ignored by mistake.</p> + <p> + Own Id: OTP-13862 Aux Id: PR-1154 </p> + </item> + <item> + <p> + Fix LLVM backend to not convert all remote calls to own + module, like <c>?MODULE:foo()</c>, into local calls.</p> + <p> + Own Id: OTP-13983</p> + </item> + <item> + <p> + Hipe optional LLVM backend does require LLVM version 3.9 + or later as older versions forced strong dependencies on + erts internals structures.</p> + <p> + Own Id: OTP-14238</p> + </item> + <item> + <p> + Fix a bug that has been seen causing failed loading of + hipe compiled modules on NetBSD due to unaligned data + pointers.</p> + <p> + Own Id: OTP-14302 Aux Id: ERL-376, PR-1386 </p> + </item> + <item> + <p> + Fix miscompilation bug in hipe that could cause wrong + function clause to be called from non-tail calls, where + the return value is unused, if the right function clause + is only reachable from those non-tail calls.</p> + <p> + Own Id: OTP-14306 Aux Id: ERL-278, PR-1392 </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Improve hipe compilation time for large functions.</p> + <p> + Own Id: OTP-13810 Aux Id: PR-1124 </p> + </item> + <item> + <p>Replaced usage of deprecated symbolic <seealso + marker="erts:erlang#type-time_unit"><c>time + unit</c></seealso> representations.</p> + <p> + Own Id: OTP-13831 Aux Id: OTP-13735 </p> + </item> + <item> + <p> + Speed up hipe compile time register allocation for larger + function.</p> + <p> + Own Id: OTP-13879</p> + </item> + <item> + <p> + Various code generation improvements.</p> + <p> + Own Id: OTP-14261 Aux Id: PR-1360 </p> + </item> + <item> + <p> + Improve hipe compiler to generate code with better CPU + register utilization at runtime by the use of 'Live Range + Splitting' techniques.</p> + <p> + Own Id: OTP-14293 Aux Id: PR-1380 </p> + </item> + <item> + <p> + Allow HiPE to run on VM built with + <c>--enable-m32-build</c>.</p> + <p> + Own Id: OTP-14330 Aux Id: PR-1397 </p> + </item> + </list> + </section> + +</section> + <section><title>Hipe 3.15.4</title> <section><title>Fixed Bugs and Malfunctions</title> @@ -1317,7 +1513,7 @@ <list> <item> <p> - Miscellanous updates.</p> + Miscellaneous updates.</p> <p> Own Id: OTP-8038</p> </item> |