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Diffstat (limited to 'lib/compiler')
| -rw-r--r-- | lib/compiler/doc/src/notes.xml | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/lib/compiler/doc/src/notes.xml b/lib/compiler/doc/src/notes.xml index 3311943b3c..6db8d19b5a 100644 --- a/lib/compiler/doc/src/notes.xml +++ b/lib/compiler/doc/src/notes.xml @@ -32,6 +32,119 @@ <p>This document describes the changes made to the Compiler application.</p> +<section><title>Compiler 6.0</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + The compiler optimizes away building of terms that are + never actually used. As a result, the compiler in OTP 18 + may produce more warnings for terms that are built but + not used than the compiler in OTP 17.</p> + <p> + Own Id: OTP-12453</p> + </item> + <item> + <p> + Using a map could incorrectly suppress warnings for + unused variables.</p> + <p> + Own Id: OTP-12515</p> + </item> + <item> + <p> + The compiler now properly reports unknown parse + transforms. That is, <c>undef</c> exceptions coming from + the parse transform itself is reported differently from + the absence of the parse transform.</p> + <p> + Own Id: OTP-12723</p> + </item> + <item> + <p> + Allow for 'creation of sub binary delayed' optimization + if maps instructions are in a clause.</p> + <p> + Own Id: OTP-12758</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + The <c>cerl</c> and <c>cerl_trees</c> modules in the + <c>compiler</c> application are now documented.</p> + <p> + Own Id: OTP-11978</p> + </item> + <item> + <p> + The deprecated '<c>asm</c>' option has been removed.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-12100</p> + </item> + <item> + <p> + Support variables as Map keys in expressions and patterns</p> + <p>Erlang will accept any expression as keys in Map + expressions and it will accept literals or bound + variables as keys in Map patterns.</p> + <p> + Own Id: OTP-12218</p> + </item> + <item> + <p> + Infer Map type information in beam_type compiler + optimization pass.</p> + <p> + Own Id: OTP-12253</p> + </item> + <item> + <p> + Compiler optimizations have been improved.</p> + <p> + Own Id: OTP-12393</p> + </item> + <item> + <p> + Five undocumented functions in the module <c>core_lib</c> + have been deprecated and will be removed in the next + major release. The functions are: <c>get_anno/{1,2}</c>, + <c>is_literal/1</c>, <c>is_literal_list/1</c>, and + <c>literal_value</c>. Use the appropriate functions in + the <c>cerl</c> module instead.</p> + <p> + Own Id: OTP-12497</p> + </item> + <item> + <p> + Change some internal data structures to Maps in order to + speed up compilation time. Measured speed up is around + 10%-15%.</p> + <p> + Own Id: OTP-12774</p> + </item> + <item> + <p> + Fix beam_bool pass for Maps instruction get_map_elements</p> + <p> + Before beam_split the get_map_elements instruction is + still in blocks and the helper function in beam_jump did + not reflect this.</p> + <p> + Own Id: OTP-12844 Aux Id: 17 </p> + </item> + </list> + </section> + +</section> + <section><title>Compiler 5.0.4</title> <section><title>Fixed Bugs and Malfunctions</title> |