LLVM Weekly - #268, February 18th 2019
Welcome to the two hundred and sixty-eighth 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 https://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.
News and articles from around the web
The early bird rate for EuroLLVM'19 ends on Feb 26th.
Phoronix have published a series of GCC 8/9 vs LLVM Clang 7/8 compiler benchmarks for AArch64.
On the mailing lists
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The discussion on changing variable naming in the LLVM codebase continues, with discussions this week covering concerns about a transition plan.
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Joel E. Denny proposes placing Clang's libraries in Clang-dedicated directories (within lib/clang instead of lib/).
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Todd Snider kicked off an RFC thread on allowing global label definition through inline asm. James Y Knight suggests it would also be useful to expose what global symbols are defined by an asm statement.
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Chris Bowler shared an RFC on adding LLVM support for AIX.
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Philip Reames seeks clarification on the precise meaning of "must alias", which Chris Lattner provides.
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Shiva Chen shared an RFC on passing a target module flag with LTO enabled. Specifically, whether to pass a new
-msmall-data-limit(implemented for the RISC-V backend) using the LTO interface, module metadata, or represented in a different way in IR.
LLVM commits
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Documentation was added detailing common recipes for migrating downstream branches of git mirrors to the new canonical monorepo hosted on GitHub. r353713.
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AddressSanitizer was ported to the new pass manager. r353985.
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Many PrintFatalError calls in tablegen now contain location information. r353862.
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The AArch64 backend gained support for reserving arbitrary general purpose registers. r353957.
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The RISC-V backend now supports assembling the
lapseudoinstruction. r354111.
Clang commits
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The ShadowCallStack documentation was updated. r353890.
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Build and install targets were added for Clang libraries, similar to the llvm-libraries target. r354141.
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Android ARM targets now default to NEON. r354166.