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Optimised T0 generated code: when possible (at most 256 words), word calls are encoded over one byte, even in the 128..255 range.

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This commit is contained in:
Thomas Pornin 2016-12-12 19:58:49 +01:00
parent e61ad42191
commit fb7052216d
8 changed files with 114 additions and 20 deletions
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16
T0/CodeElement.cs
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@ -30,7 +30,7 @@ abstract class CodeElement {
internal int LastLength { get; set; }
internal abstract int Length { get; }
// internal abstract int Length { get; }
internal CodeElement()
{
@ -42,7 +42,19 @@ abstract class CodeElement {
throw new Exception("Code element accepts no target");
}
internal abstract int Encode(BlobWriter bw);
internal abstract int GetLength(bool oneByteCode);
internal abstract int Encode(BlobWriter bw, bool oneByteCode);
internal static int EncodeOneByte(uint val, BlobWriter bw)
{
if (val > 255) {
throw new Exception(string.Format(
"Cannot encode '{0}' over one byte", val));
}
bw.Append((byte)val);
return 1;
}
internal static int Encode7EUnsigned(uint val, BlobWriter bw)
{