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Remove mono specific SpanHelpers #79215

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merged 13 commits into from
Dec 18, 2022
+681 −2,842
Merged

Remove mono specific SpanHelpers #79215

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c3cbacd
Revert "[Mono] Restore old code to solve the recent SpanHelpers regre…
BrzVlad Nov 1, 2022
76d56b2
[System.Span] Refactor hot loop code
BrzVlad Nov 1, 2022
c7d817f
[mono][interp] Replace compare + brfalse/brtrue with single condition…
BrzVlad Nov 1, 2022
300afdb
[mono][interp] Dump in/out links for bblocks during verbose logging
BrzVlad Nov 1, 2022
e9f50e2
[mono][interp] Improve detection of dead bblocks
BrzVlad Nov 1, 2022
17c8da0
[mono][interp] Reorder bblocks to facilitate propagation of values
BrzVlad Nov 3, 2022
83b2d05
[mono][interp] Don't optimize out bblocks that are tiering patchpoint…
BrzVlad Nov 15, 2022
fe8288a
[mono][interp] Make bblock reordering more conservative
BrzVlad Nov 15, 2022
65feed0
[mono][interp] Add basic removal of unused defines
BrzVlad Nov 3, 2022
3f7bd3d
[mono][interp] Clear unused defines of local only vars
BrzVlad Nov 3, 2022
7b41739
[mono][interp] Propagate target branches
BrzVlad Nov 3, 2022
3558b6d
[mono][interp] Add super instruction for (var + ct1) * ct2
BrzVlad Dec 3, 2022
32b8723
[mono][interp] Add new ldind super instruction
BrzVlad Dec 4, 2022
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3 changes: 0 additions & 3 deletions src/libraries/System.Private.CoreLib/src/System.Private.CoreLib.Shared.projitems
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Original file line number Diff line number Diff line change
Expand Up @@ -2526,7 +2526,4 @@
<Compile Include="$(MSBuildThisFileDirectory)System\Numerics\IUnaryPlusOperators.cs" />
<Compile Include="$(MSBuildThisFileDirectory)System\Numerics\IUnsignedNumber.cs" />
</ItemGroup>
<ItemGroup Condition="'$(FeatureMono)' == 'true'">
<Compile Include="$(MSBuildThisFileDirectory)System\SpanHelpers.Mono.cs" />
</ItemGroup>
</Project>
7 changes: 1 addition & 6 deletions src/libraries/System.Private.CoreLib/src/System/MemoryExtensions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1750,7 +1750,6 @@ public static unsafe int IndexOfAny<T>(this ReadOnlySpan<T> span, ReadOnlySpan<T
Unsafe.Add(ref valueRef, 2),
span.Length);

#if !MONO // We don't have a mono overload for 4 values
case 4:
return SpanHelpers.IndexOfAnyValueType(
ref spanRef,
Expand All @@ -1759,7 +1758,7 @@ public static unsafe int IndexOfAny<T>(this ReadOnlySpan<T> span, ReadOnlySpan<T
Unsafe.Add(ref valueRef, 2),
Unsafe.Add(ref valueRef, 3),
span.Length);
#endif

case 5:
return SpanHelpers.IndexOfAnyValueType(
ref spanRef,
Expand Down Expand Up @@ -2025,7 +2024,6 @@ public static unsafe int LastIndexOfAny<T>(this ReadOnlySpan<T> span, ReadOnlySp
Unsafe.Add(ref valueRef, 2),
span.Length);

#if !MONO // We don't have a mono overload for 4 values
case 4:
return SpanHelpers.LastIndexOfAnyValueType(
ref spanRef,
Expand All @@ -2034,7 +2032,6 @@ public static unsafe int LastIndexOfAny<T>(this ReadOnlySpan<T> span, ReadOnlySp
Unsafe.Add(ref valueRef, 2),
Unsafe.Add(ref valueRef, 3),
span.Length);
#endif

case 5:
return SpanHelpers.LastIndexOfAnyValueType(
Expand Down Expand Up @@ -2075,7 +2072,6 @@ public static unsafe int LastIndexOfAny<T>(this ReadOnlySpan<T> span, ReadOnlySp
Unsafe.Add(ref valueRef, 2),
span.Length);

#if !MONO // We don't have a mono overload for 4 values
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case 4:
return SpanHelpers.LastIndexOfAnyValueType(
ref spanRef,
Expand All @@ -2084,7 +2080,6 @@ public static unsafe int LastIndexOfAny<T>(this ReadOnlySpan<T> span, ReadOnlySp
Unsafe.Add(ref valueRef, 2),
Unsafe.Add(ref valueRef, 3),
span.Length);
#endif

case 5:
return SpanHelpers.LastIndexOfAnyValueType(
Expand Down
16 changes: 12 additions & 4 deletions src/libraries/System.Private.CoreLib/src/System/SpanHelpers.Byte.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -986,13 +986,21 @@ public static nuint CommonPrefixLength(ref byte first, ref byte second, nuint le

for (; (nint)i <= (nint)length - 4; i += 4)
{
if (Unsafe.Add(ref first, i + 0) != Unsafe.Add(ref second, i + 0)) return i + 0;
if (Unsafe.Add(ref first, i + 1) != Unsafe.Add(ref second, i + 1)) return i + 1;
if (Unsafe.Add(ref first, i + 2) != Unsafe.Add(ref second, i + 2)) return i + 2;
if (Unsafe.Add(ref first, i + 3) != Unsafe.Add(ref second, i + 3)) return i + 3;
if (Unsafe.Add(ref first, i + 0) != Unsafe.Add(ref second, i + 0)) goto Found0;
if (Unsafe.Add(ref first, i + 1) != Unsafe.Add(ref second, i + 1)) goto Found1;
if (Unsafe.Add(ref first, i + 2) != Unsafe.Add(ref second, i + 2)) goto Found2;
if (Unsafe.Add(ref first, i + 3) != Unsafe.Add(ref second, i + 3)) goto Found3;
}

return length;
Found0:
return i;
Found1:
return i + 1;
Found2:
return i + 2;
Found3:
return i + 3;
}

Debug.Assert(length >= (uint)Vector128<byte>.Count);
Expand Down
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