[AArch64][SVE] Merge 14e1a4a6eef2fb95ec852c9ddfc597f80bba3226 into LLVM 13.0.0

[brads55]

Bugzilla Link	51719
Resolution	FIXED
Resolved on	Sep 09, 2021 09:06
Version	trunk
OS	All
Blocks	#50580
CC	@Arnaud-de-Grandmaison-ARM,@smithp35,@tstellar
Fixed by commit(s)	14e1a4a 0c2f859

Extended Description

Please merge 14e1a4a (https://reviews.llvm.org/D109145) into the LLVM 13 release branch. This fixes another codegen fault when lowering fixed length SVE gather/scatter nodes when using a specific addressing mode and datatype.

[tstellar]

These tests fail when I backport the patch:

LLVM :: CodeGen/AArch64/sve-fixed-length-masked-gather.ll
LLVM :: CodeGen/AArch64/sve-fixed-length-masked-scatter.ll

[brads55]

Fixed patch for release branch
Apologies, there are some slight codegen differences in the tests on the branch that I had missed. Attached is a new version of this patch with those tests fixed. (This was a test only change, the code changes remain the same).

[tstellar]

Merged: 0c2f859