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Implement VCNT instruction (#1963)

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* Implement VCNT based on AArch64 CNT

Add tests

* Update PTC version

* Address LDj's comments

* Explicit size in encoding
* Tighter tests
* Replace SoftFallback with IR helper

Co-authored-by: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>

* Reduce one BitwiseAnd from IR fallback

Based on popcount64b from https://en.wikipedia.org/wiki/Hamming_weight#Efficient_implementation

* Rename parameter and add assert

Co-authored-by: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>

Co-authored-by: LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com>
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mageven 2021-02-22 20:56:13 +05:30 • committed by GitHub
parent dc0adb533d
commit 9bda7b4699
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9 changed files with 81 additions and 11 deletions
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ARMeilleure/Translation/Delegates.cs
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@ -148,7 +148,6 @@ namespace ARMeilleure.Translation
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.BinaryUnsignedSatQSub)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.CountLeadingSigns)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.CountLeadingZeros)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.CountSetBits8)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.Crc32b)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.Crc32cb)));
SetDelegateInfo(typeof(SoftFallback).GetMethod(nameof(SoftFallback.Crc32ch)));