[PATCH] D35996: [X86][AVX] Ensure vector non-temporal load/store intrinsics force pointer alignment (PR33830)

[Simon Pilgrim via Phabricator via cfe-commits]

RKSimon created this revision.

Clang specifies a max type alignment of 16 bytes on darwin targets (annoyingly in the driver not via cc1), meaning that the builtin nontemporal stores don't correctly align the loads/stores to 32 or 64 bytes when required, resulting in lowering to temporal unaligned loads/stores.

This patch casts the vectors to explicitly aligned types prior to the load/store to ensure that the require alignment is respected.


Repository:
  rL LLVM

https://reviews.llvm.org/D35996

Files:
  lib/Headers/avx2intrin.h
  lib/Headers/avx512fintrin.h
  lib/Headers/avxintrin.h
  test/CodeGen/x86-nontemporal.c

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