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Bug 4967 - [PATCH] Improved CPU detection on ARM platforms
Summary: [PATCH] Improved CPU detection on ARM platforms
Status: RESOLVED FIXED
Alias: None
Product: SDL
Classification: Unclassified
Component: *don't know* (show other bugs)
Version: HG 2.0
Hardware: ARM All
: P2 normal
Assignee: Ryan C. Gordon
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks: 4984
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Reported: 2020-02-05 12:19 UTC by Cameron Cawley
Modified: 2020-02-15 00:22 UTC (History)
0 users

See Also:

Attachments
Improved CPU detection on ARM platforms (1.98 KB, patch)
2020-02-05 12:19 UTC, Cameron Cawley 		Details | Diff
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Description Cameron Cawley 2020-02-05 12:19:34 UTC 
Created attachment 4191 [details]
Improved CPU detection on ARM platforms

__ARM_ARCH is not defined with GCC 4.7, as used on RISC OS. In addition, from what I understand, SIMD instructions are guaranteed to be available when building SDL for ARMv6 or later, so this patch also adds compile-time checks for that as well. As a result, this means SDL_HasARMSIMD() now works correctly on AArch64.
Comment 1 Sam Lantinga 2020-02-15 00:22:31 UTC 
This looks good, thanks!
https://hg.libsdl.org/SDL/rev/604325956b9a