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Cache values to get 30% speed up with some files (DNR)

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de4dot 2012-01-27 01:19:18 +01:00
parent dce16e9f12
commit 96c13fb05e
1 changed files with 25 additions and 10 deletions
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35
blocks/cflow/InstructionEmulator.cs
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@ -32,6 +32,11 @@ namespace de4dot.blocks.cflow {
List<Value> locals = new List<Value>();
int argBase;
MethodDefinition prev_method;
List<Value> cached_args = new List<Value>();
List<Value> cached_locals = new List<Value>();
int cached_argBase;
public InstructionEmulator() {
}
@ -48,18 +53,28 @@ namespace de4dot.blocks.cflow {
this.variableDefinitions = method.Body.Variables;
valueStack.init();
args.Clear();
argBase = 0;
if (method.HasImplicitThis) {
argBase = 1;
args.Add(new UnknownValue());
}
for (int i = 0; i < parameterDefinitions.Count; i++)
args.Add(getUnknownValue(parameterDefinitions[i].ParameterType));
if (method != prev_method) {
prev_method = method;
cached_args.Clear();
cached_argBase = 0;
if (method.HasImplicitThis) {
cached_argBase = 1;
cached_args.Add(new UnknownValue());
}
for (int i = 0; i < parameterDefinitions.Count; i++)
cached_args.Add(getUnknownValue(parameterDefinitions[i].ParameterType));
cached_locals.Clear();
for (int i = 0; i < variableDefinitions.Count; i++)
cached_locals.Add(getUnknownValue(variableDefinitions[i].VariableType));
}
argBase = cached_argBase;
args.Clear();
args.AddRange(cached_args);
locals.Clear();
for (int i = 0; i < variableDefinitions.Count; i++)
locals.Add(getUnknownValue(variableDefinitions[i].VariableType));
locals.AddRange(cached_locals);
}
static Value getUnknownValue(TypeReference typeReference) {