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Optimize string memory usage. Use Spans and StringBuilders where possible (#3933)

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* Optimize string memory usage. Use ReadOnlySpan<char> and StringBuilder where possible.

* Fix copypaste error

* Code generator review fixes

* Use if statement instead of switch

* Code style fixes

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>

* Another code style fix

* Styling fix

Co-authored-by: Mary-nyan <thog@protonmail.com>

* Styling fix

Co-authored-by: gdkchan <gab.dark.100@gmail.com>

Co-authored-by: TSRBerry <20988865+TSRBerry@users.noreply.github.com>
Co-authored-by: Mary-nyan <thog@protonmail.com>
Co-authored-by: gdkchan <gab.dark.100@gmail.com>
This commit is contained in:
Andrey Sukharev 2023-01-19 01:25:16 +03:00 • committed by GitHub
parent f449895e6d
commit ae4324032a
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GPG key ID: 4AEE18F83AFDEB23
19 changed files with 118 additions and 81 deletions
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12
ARMeilleure/Decoders/OpCodeTable.cs
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@ -1339,7 +1339,7 @@ namespace ARMeilleure.Decoders
private static void SetT32(string encoding, InstName name, InstEmitter emitter, MakeOp makeOp)
{
string reversedEncoding = encoding.Substring(16) + encoding.Substring(0, 16);
string reversedEncoding = $"{encoding.AsSpan(16)}{encoding.AsSpan(0, 16)}";
MakeOp reversedMakeOp =
(inst, address, opCode)
=> makeOp(inst, address, (int)BitOperations.RotateRight((uint)opCode, 16));
@ -1353,7 +1353,7 @@ namespace ARMeilleure.Decoders
string thumbEncoding = encoding;
if (thumbEncoding.StartsWith("<<<<"))
{
thumbEncoding = "1110" + thumbEncoding.Substring(4);
thumbEncoding = $"1110{thumbEncoding.AsSpan(4)}";
}
SetT32(thumbEncoding, name, emitter, makeOpT32);
}
@ -1365,19 +1365,19 @@ namespace ARMeilleure.Decoders
string thumbEncoding = encoding;
if (thumbEncoding.StartsWith("11110100"))
{
thumbEncoding = "11111001" + encoding.Substring(8);
thumbEncoding = $"11111001{encoding.AsSpan(8)}";
}
else if (thumbEncoding.StartsWith("1111001x"))
{
thumbEncoding = "111x1111" + encoding.Substring(8);
thumbEncoding = $"111x1111{encoding.AsSpan(8)}";
}
else if (thumbEncoding.StartsWith("11110010"))
{
thumbEncoding = "11101111" + encoding.Substring(8);
thumbEncoding = $"11101111{encoding.AsSpan(8)}";
}
else if (thumbEncoding.StartsWith("11110011"))
{
thumbEncoding = "11111111" + encoding.Substring(8);
thumbEncoding = $"11111111{encoding.AsSpan(8)}";
}
else
{