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Bug 4967

Summary: [PATCH] Improved CPU detection on ARM platforms
Product: SDL Reporter: Cameron Cawley <ccawley2011>
Component: *don't know*Assignee: Ryan C. Gordon <icculus>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: HG 2.0   
Hardware: ARM   
OS: All   
Bug Depends on:    
Bug Blocks: 4984    
Attachments: Improved CPU detection on ARM platforms

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