LLVM Weekly - #275, April 8th 2019

Welcome to the two hundred and seventy-fifth issue of LLVM Weekly, a weekly newsletter (published every Monday) covering developments in LLVM, Clang, and related projects. LLVM Weekly is brought to you by Alex Bradbury. Subscribe to future issues at http://llvmweekly.org and pass it on to anyone else you think may be interested. Please send any tips or feedback to asb@asbradbury.org, or @llvmweekly or @asbradbury on Twitter.

I'm at EuroLLVM today and tomorrow - be sure to say hi!

News and articles from around the web

The April LLVM Austin social will take place this Thursday 11th April at 6pm.

The Portable Computing Language (pocl) 1.3 has been released, this is an open source implementation of the OpenCL standard. This release adds support for Clang/LLVM 8.0, amongst other changes.

On the mailing lists

LLVM commits

A new isa_and_nonnull<> operator was added which works just like isa<> , but allows for a null pointer as an argument. r357761.

New PDB documentation was added. r357777, r357788, r357826.

The RISC-V LLVM backend learned to emit appropriate address sequences for -mcmodel=medium . r357393.

A new optForNone() method was added to Function to more easily test for -O0 . r357638.

SelectionDAG::computeKnownBits can now compute known bits for ISD::CopyFromReg . r357745.

The X86 CMOV, SETcc, and Jcc instruction definitions were refactored to merge the condition codes into single instructions storing the condition code as an immediate. r357800, r357801, r357802

Clang commits

Transformer, a library for clang-based source-to-source transformations was committed. r357768.

For loops with more than one transformation, the order in which those transformations are applied will now be encoded in the emitted metadata. r357415.

Other project commits