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Implement Intrinsics.pause for aarch64 #11742

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merged 3 commits into from Jan 21, 2022
Merged

Implement Intrinsics.pause for aarch64 #11742

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6bd4ba0
feat: implement Intrinsics.pause for ARM
lbguilherme Jan 12, 2022
50aeb3c
fix: use correct type for arm hint
lbguilherme Jan 12, 2022
516f1db
fix: remove ARM and leave only AArch64
lbguilherme Jan 12, 2022
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7 changes: 7 additions & 0 deletions src/intrinsics.cr
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Expand Up @@ -107,6 +107,11 @@ lib LibIntrinsics
{% if flag?(:interpreted) %} @[Primitive(:interpreter_intrinsics_pause)] {% end %}
fun pause = "llvm.x86.sse2.pause"
{% end %}

{% if flag?(:aarch64) %}
{% if flag?(:interpreted) %} @[Primitive(:interpreter_intrinsics_pause)] {% end %}
fun arm_hint = "llvm.aarch64.hint"(hint : Int32)
{% end %}
end

module Intrinsics
Expand All @@ -117,6 +122,8 @@ module Intrinsics
def self.pause
{% if flag?(:i386) || flag?(:x86_64) %}
LibIntrinsics.pause
{% elsif flag?(:aarch64) %}
LibIntrinsics.arm_hint(1) # YIELD
{% end %}
end

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