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Add LOP_GETIMPORT optimisation to compileExprIndexExpr

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Will 2023-12-23 13:57:45 +00:00
parent ff3618bd2b
commit 401f99e121
1 changed files with 40 additions and 0 deletions
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40
Compiler/src/Compiler.cpp
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@ -1991,6 +1991,46 @@ struct Compiler
}
else if (AstExprConstantString* string = expr->index->as<AstExprConstantString>())
{
AstExprGlobal* importRoot = 0;
AstExprIndexExpr* import1 = 0;
AstExprIndexExpr* import2 = 0;
if (AstExprIndexExpr* index = expr->expr->as<AstExprIndexExpr>())
{
importRoot = index->expr->as<AstExprGlobal>();
import1 = index;
import2 = expr;
}
else
{
importRoot = expr->expr->as<AstExprGlobal>();
import1 = expr;
}
if (importRoot && canImportChain(importRoot))
{
int32_t id0 = bytecode.addConstantString(sref(importRoot->name));
int32_t id1 = bytecode.addConstantString(sref(import1->index->as<AstExprConstantString>()->value));
int32_t id2 = import2 ? bytecode.addConstantString(sref(import1->index->as<AstExprConstantString>()->value)) : -1;
if (id0 < 0 || id1 < 0 || (import2 && id2 < 0))
CompileError::raise(expr->location, "Exceeded constant limit; simplify the code to compile");
// Note: GETIMPORT encoding is limited to 10 bits per object id component
if (id0 < 1024 && id1 < 1024 && id2 < 1024)
{
uint32_t iid = import2 ? BytecodeBuilder::getImportId(id0, id1, id2) : BytecodeBuilder::getImportId(id0, id1);
int32_t cid = bytecode.addImport(iid);
if (cid >= 0 && cid < 32768)
{
bytecode.emitAD(LOP_GETIMPORT, target, int16_t(cid));
bytecode.emitAux(iid);
return;
}
}
}
BytecodeBuilder::StringRef iname = sref(string->value);
int32_t cid = bytecode.addConstantString(iname);
if (cid < 0)