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i#5365 AArch64: Change scatter/gather instructions to per-element size #6574
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jackgallagher-arm
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i5365-aarch64-scatter-gather-per-element-size
Jan 24, 2024
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i#5365 AArch64: Change scatter/gather instructions to per-element size #6574
jackgallagher-arm
merged 11 commits into
master
from
i5365-aarch64-scatter-gather-per-element-size
Jan 24, 2024
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Change the scalar+vector scatter/gather instructions to use a per-element size for their memory operand and update the codec tests accordingly.
Change the vector+immediate scatter/gather instructions to use a per-element size for their memory operand and update the codec tests accordingly.
Change the scalar+scalar predicated contiguous load/store instructions to use a per-element size for their memory operand and update the codec tests accordingly.
The codec changes made in the previous patch mean we can combine some of the scalar+scalar encode/decode functions and simplify the codec.
Change the scalar+scalar replicating predicated contiguous load/store instructions to use a per-element size for their memory operand and update the codec tests accordingly.
Change the scalar+immediate predicated contiguous load/store instructions to use a per-element size for their memory operand and update the codec tests accordingly.
Update the documentation comments to reflect the IR changes.
Now that the IR uses the per-element size drx_expand_scatter_gather() will need to calculate the full memory transfer size.
Now that the SVE scatter/gather and predicated contiguous load/store instructions use per-element sizes we don't need this workaround any more.
x86-32 regression related to #6417. |
AssadHashmi
requested review from
AssadHashmi,
abhinav92003 and
derekbruening
January 23, 2024 11:23
AssadHashmi
approved these changes
Jan 23, 2024
derekbruening
approved these changes
Jan 23, 2024
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I did not check the codec details, just glanced over the other changes: LGTM
jackgallagher-arm
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January 24, 2024 10:59
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Make the AArch64 IR consistent with x86 which already uses the per-element
transfer size for the scatter/gather memory operand size.
This changes the AArch64 codec for the scatter/gather and predicated contiguous
load/store instructions to use the per-element access size for the memory operand
instead of the maximum total transfer size that it used previously, and updates
the tests accordingly.
Issues: #5365, #5036, #6561