Displaying 3 results from an estimated 3 matches for "creatememcpyloop".
2018 Mar 26
1
Change memcpy/memmove/memset to have dest and source alignment attributes
...alignment for both, so these helpers will now be invoked with more information than they have in the past; I’m guessing that it’s possible they could do better with this information. For example, createMemMoveLoop() doesn’t even use the alignments it’s given at all right now, and the neither of the createMemCpyLoop*() functions try to set the alignments on the loads & stores it creates.
Passes that have conservative alignments after updating:
- SelectionDAG
- AArch64FastISel
- ARMFastISel
- MemorySanitizer
- MemCpyOpt : Call slot optimization
- InlineFunction : HandleByValArgumentInit
- LowerMemIntrinsi...
2018 Apr 02
0
Change memcpy/memmove/memset to have dest and source alignment attributes
...so
> these helpers will now be invoked with more information than they have in the
> past; I’m guessing that it’s possible they could do better with this
> information. For example, createMemMoveLoop() doesn’t even use the alignments
> it’s given at all right now, and the neither of the createMemCpyLoop*()
> functions try to set the alignments on the loads & stores it creates.
>
> Passes that have conservative alignments after updating:
> - SelectionDAG
> - AArch64FastISel
> - ARMFastISel
> - MemorySanitizer
> - MemCpyOpt : Call slot optimization
> - InlineFunction...
2018 Jan 02
5
Change memcpy/memmove/memset to have dest and source alignment attributes
Good day all,
I’ve spent a few days resurrecting the circa-2015 work on removing the explicit alignment argument (4th arg) from the @llvm.memcpy/memmove/memset intrinsics in favour of using the alignment attribute on the pointer args of calls to the intrinsic. This work was first proposed back in August 2015 by Lang Hames:
http://lists.llvm.org/pipermail/llvm-dev/2015-August/089384.html (item