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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>
This commit is contained in:
mageven
2021-02-22 20:56:13 +05:30
committed by GitHub
parent dc0adb533d
commit 9bda7b4699
9 changed files with 81 additions and 11 deletions
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1
ARMeilleure/Instructions/InstName.cs
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@ -567,6 +567,7 @@ namespace ARMeilleure.Instructions
Vclt,
Vcmp,
Vcmpe,
Vcnt,
Vcvt,
Vdiv,
Vdup,