ldc-developers/ldc v1.1.0-beta3

LDC 1.1.0 beta 3

on GitHub

(Changes from 1.1.0-beta2 release are marked with (new) and gone.)

Big news

• Frontend, druntime and Phobos are at version 2.071.2. (new)
• Cross-module inlining (#1577, enabled from -O2, enable with -enable-cross-module-inlining (new))
• Profile-guided optimization (#1219, "How To" article)
• Experimental IR-to-obj caching with -ir2obj-cache=<cache dir> (#1572)
• Accept bitcode files on commandline (#1539)
• @ldc.attributes.fastmath for aggressive math optimization (#1472, #1438, article)
• New traits __traits(targetCPU) and __traits(targetHasFeature, ) (#1434)
• Binary distribution now bundles DUB (#1573)
• Drastic reduction of large symbol name lengths with -hash-threshold (#1445)
• @ldc.attributes.optStrategy(...) for per-function optimization setting (#1637)
• Breaking changes to command-line semantics (See http://forum.dlang.org/post/ubobkfmsspbsmjunosna@forum.dlang.org). (new)

ABI change

• This release features an ABI change, meaning that you may run into trouble when mixing binaries/libraries compiled with 1.1.0 with binaries compiled with earlier compiler versions.
• The vtable's of inherited interfaces are now put between the class's _monitor field and the user data fields (https://issues.dlang.org/show_bug.cgi?id=15644)

Platform support

• Supports LLVM 3.5 - 3.9.
• Added ARM assembly code for Phobos std.bigint (ldc-developers/phobos#31)
• Added some definitions for OpenBSD (ldc-developers/druntime@1ef8322)
• Updates for Solaris (ldc-developers/druntime#71, ldc-developers/druntime#72, ldc-developers/druntime#73, ldc-developers/druntime#74, ldc-developers/druntime#75, ldc-developers/druntime#79)
• Linux: changed default to fully relocatable, position independent code (PIC). Change back to non-relocatable with -relocation-model=static. (#1664)

Bug fixes

• ICE when incrementing a complex variable. (#1806) (new)
• llvm.va_start not matched with llvm.va_end (#1744) (new)
• ldmd2 ignores -od option for libraries. (#1724) (new)
• ICE: toConstElem(CastExp) doesn't support NewExp as cast source. (#1723) (new)
• Mark runtime intrinsic shims as pragma(inline, true). (#1715) (new)
• pragma(inline, false) is incompatible with store/loadUnaligned. (#1711) (new)
• ICE: function not fully analyzed; previous unreported errors compiling std.variant.VariantN!(16LU, int, string).VariantN.xopEquals? (#1698) __(new)
• Segfault at at ldc/ldc-1.1.0/driver/main.cpp:1351. (#1696) (new)
• Make sure MSVC Build Tools are automatically detected by LDC. (#1690)
• Update Windows README.txt. (#1689) (new)
• [ldc2-1.1.0-beta2] Missing symbol with inlining enabled. (#1678) (new)
• [REG ldc-1.1.0-beta2] ICE with templated classes. (#1677)
• FreeBSD: Fix shared library build, working Hello World. (#1673)
• Strange compile time error. (#1638)
• LDC+DUB on Windows: folder separator is ignored. (#1621)
• Fix evaluation order issues. (#1620, #1623)
• Ubuntu 16.10 linker failures due to PIE by default (relocation R_X86_64_32S … can not be used). (#1618)
• ICE on returning struct with zero-length static array. (#1611)
• Debug info generation fixes for LLVM >= 3.8. (#1598)
• ICE after return in the middle of a function on Win64/MSVC. (#1582)
• Enums with referenced struct members result in floating point error. (#1581)
• Static array initialization with single element misdetected as direct construction via sret. (#1548)
• ICE on static typeid. (#1540)
• super doesn't work. (#1450)
• Sub-expression evaluation order fixes. (#1327)

Building LDC

• LDC now requires a preinstalled D compiler. (Versions 0.17.* and the ltsmaster branch can be used to 'bootstrap' a build when only a C++ compiler is available.)
• On Unix-like systems we now use gcc for linking. (#1594)

Internals

• optimizer: Skip adding verifier function pass if -disable-verify is given. (#1591)
• DValue refactoring. (#1562)
• Several improvements to generated IR. (#1528, #1630)

Known issues

• LDC does not zero the padding area of a real variable. This may lead to wrong results if the padding area is also considered. See #770. Does not apply to real members inside structs etc.
• Phobos does not compile on MinGW platform.