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Implement automatic verification for ARM/AArch64 intrinsics #626

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Merged
merged 1 commit into from
Dec 20, 2018

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alexcrichton
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This commit implements automatic verification of implement ARM/AArch64
intrinsics. Or it's at least a start! This downloads a snapshot of ARM's
online documentation and implements necessary logic to parse
that and use it to verify all the intrinsics. Almost everything
checked out A-OK but a few minor tweaks were needed to the neon
intrinsics and the crc ones needed some renaming.

This commit implements automatic verification of implement ARM/AArch64
intrinsics. Or it's at least a start! This downloads a snapshot of ARM's
[online documentation][docs] and implements necessary logic to parse
that and use it to verify all the intrinsics. Almost everything
checked out A-OK but a few minor tweaks were needed to the neon
intrinsics and the crc ones needed some renaming.

[docs]: https://developer.arm.com/technologies/neon/intrinsics
@alexcrichton
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All green! I'm gonna go ahead and merge this and use it to update the NEON intrinsic listing

@alexcrichton alexcrichton merged commit abcdfe3 into rust-lang:master Dec 20, 2018
@alexcrichton
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cc @myfreeweb for the crc intrinsic naming changes on AArch64

@alexcrichton alexcrichton deleted the verify-arm branch December 20, 2018 20:11
@valpackett
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hm, the ones in neon.rs don't start with __?

@gnzlbg
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gnzlbg commented Dec 20, 2018

hm, the ones in neon.rs don't start with __?

now they do AFAICT, or which neon.rs do you mean? In the intrinsics guide they also have an __:

screen shot 2018-12-20 at 21 58 45

@valpackett
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Not the CRC ones, the NEON ones, visible in the diff here on github: e.g. vaddd_s64

@alexcrichton
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For whatever reason ARM seems to specify __crc32cd yet also specifies vaddd_s64 (no leading underscores). I'm not really sure why...

@gnzlbg
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gnzlbg commented Dec 20, 2018

But those do not have underscores in the intrinsics guide, right?

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3 participants