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ReleaseNotes: add SystemZ notes
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Authored by jonpa on Jan 31 2023, 8:11 AM.

Reviewers

tstellar
uweigand

Summary

SystemZ release notes for LLVM 16.

jonpa requested review of this revision.Jan 31 2023, 8:11 AM

This revision is now accepted and ready to land.Jan 31 2023, 8:19 AM

These points all look good to me, but shouldn't the __int128 alignment change (https://reviews.llvm.org/D130900) also be mentioned?

Added i128 alignment change.

LGTM

Pushed on release/16.x branch as ca7d6a6.

Path

Size

llvm/

docs/

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	* Support for the unratified Zbe, Zbf, Zbm, Zbp, Zbr, and Zbt extensions have			* Support for the unratified Zbe, Zbf, Zbm, Zbp, Zbr, and Zbt extensions have
	been removed.			been removed.
	* i32 is now a native type in the datalayout string. This enables			* i32 is now a native type in the datalayout string. This enables
	LoopStrengthReduce for loops with i32 induction variables, among other			LoopStrengthReduce for loops with i32 induction variables, among other
	optimizations.			optimizations.

				Changes to the SystemZ Backend
				------------------------------

				* The datalayout string now only depends on the target triple as expected.
				* The GNU attribute for a visible vector ABI is now emitted.
				* Align 128 bit integers to 8 bytes only, per the ABI.

	Changes to the WebAssembly Backend			Changes to the WebAssembly Backend
	----------------------------------			----------------------------------

	* ...			* ...

	Changes to the Windows Target			Changes to the Windows Target
	-----------------------------			-----------------------------

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