LLVM Weekly - #436, May 9th 2022
If you prefer, you can read a HTML version of this email at http://llvmweekly.org/issue/436.
Welcome to the four hundred and thirty-sixth 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.
News and articles from around the web
The videos from the 2022 LLVM Performance Workshop at CGO are now available.
The 2022 Clang-built Linux meetup has opened its call for papers. It will take place 10-11 September in Dublin, Ireland.
GCC 12.1 was released.
On the forums
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Orlando Cazalet-Hyams proposed an RFC on assignment tracking - a better way of specifying variable locations in IR.
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Tanya Lattner shared that a code of conduct transparency report has been published.
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Artem Belevich sought opinions on conditional dependencies on proprietary tools (e.g. ptxas, Nvidia’s proprieatary assembler).
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Andrzej Warzynski is seeking input on an RFC about the coding style in the Flang driver, which currently uses a mixture of LLVM’s standard style as of 2 years ago and MLIR’s style.
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Alexandros Lamprineas provided an update on function specialisation.
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Mehdi Amini proposes updating the MLIR developer policy on the use of recursion.
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Csonkás Kristóf Gyula suggests adding a baremetal/none OS type.
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River Riddle shared a public service announcement on verification of SameOperandsAndResultType in MLIR being tightened.
LLVM commits
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Variable length instruction support was added to the decoder generator. 28e850a.
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Initial DXContainer parsing support was added. 4070aa0.
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Documentation on
CMAKE_BUILD_TYPEwas improved. 30e8796. -
New passes were introduced to add SPIR-V specific intrinsics. 0098f2a.
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The SLP (superword-level parallelism) Vectorizer had its reductions analyses improved. 7ea03f0.
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Native CPU detection, a scheduling model, and other definitions were added for the Ampere1 core. 64816e6, 7e02bc5.
Clang commits
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__builtin_dump_structwas reimplemented, and gained a number of new features. c4f95ef. -
The clang pseudo parser gained an implementation of the standard GLR parsing algorithm and a fuzzer. 9f38da2, 1616bd9.
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Exploded graph dumps and CFG dumps from the static analyzer are now enabled in release builds. 5ce7050, 29dff0d.
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-Wimplicit-intnow defaults to an error in C99 and later. 2cb2cd2.