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Cancel unnecessary instance method call #1204

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Cancel unnecessary instance method call #1204

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18 changes: 18 additions & 0 deletions src/Neo.Compiler.CSharp/MethodConvert/Helpers/CallHelpers.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,15 @@ private void CallInstanceMethod(SemanticModel model, IMethodSymbol symbol, bool

var (convert, methodCallingConvention) = GetMethodConvertAndCallingConvention(model, symbol);

if (NeedInstanceConstructor(symbol) && convert != null && convert.Instructions.Count >= 2)
{
Instruction initslot = convert.Instructions[0];
Instruction ret = convert.Instructions[1];
if (initslot.OpCode == OpCode.INITSLOT && initslot.Operand?[0] == 0 && initslot.Operand[1] == 1
&& ret.OpCode == OpCode.RET)
return; // Do not call meaningless contructors
}

HandleConstructorDuplication(instanceOnStack, methodCallingConvention, symbol);

PrepareArgumentsForMethod(model, symbol, arguments, methodCallingConvention);
Expand All @@ -98,6 +107,15 @@ private void CallMethodWithInstanceExpression(SemanticModel model, IMethodSymbol

var (convert, methodCallingConvention) = GetMethodConvertAndCallingConvention(model, symbol, instanceExpression);

if (NeedInstanceConstructor(symbol) && convert != null && convert.Instructions.Count >= 2)
{
Instruction initslot = convert.Instructions[0];
Instruction ret = convert.Instructions[1];
if (initslot.OpCode == OpCode.INITSLOT && initslot.Operand?[0] == 0 && initslot.Operand[1] == 1
&& ret.OpCode == OpCode.RET)
return; // Do not call meaningless contructors
}

HandleInstanceExpression(model, symbol, instanceExpression, methodCallingConvention, beforeArguments: true);

PrepareArgumentsForMethod(model, symbol, arguments, methodCallingConvention);
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