KPGPMC/furlang
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feat: introduce pointerof operation

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Introduce pointerof operation and do some side-quests along the way.

Refs: #34
Closes: #17
This commit is contained in:
Aleksander Krajewski
2026-07-05 14:54:16 +02:00
parent 9690ac3617
commit 642d57622a
13 changed files with 290 additions and 141 deletions
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furc/src/back/furvm.cpp
+42 -17
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@@ -2,7 +2,6 @@
#include "furlang/ir/function.hpp"
#include "furlang/ir/instruction.hpp"
#include "furvm/function.hpp"
#include "furvm/fwd.hpp"
#include <furvm/instruction.hpp>
@@ -56,21 +55,26 @@ void furvm_generator::generate_function(furvm::mod& mod, const furlang::ir::func
}
}
static inline furvm::instruction_t binary_op_type(furlang::ir::binary_op_instruction_t type) {
static inline furvm::instruction_t op_type(furlang::ir::instruction_t type) {
switch (type) {
case furlang::ir::binary_op_instruction_t::Add: return furvm::instruction_t::Add;
case furlang::ir::binary_op_instruction_t::Sub: return furvm::instruction_t::Sub;
case furlang::ir::binary_op_instruction_t::Mul: return furvm::instruction_t::Mul;
case furlang::ir::binary_op_instruction_t::Div: return furvm::instruction_t::Div;
case furlang::ir::binary_op_instruction_t::Mod: return furvm::instruction_t::Mod;
case furlang::ir::binary_op_instruction_t::Eq: return furvm::instruction_t::Equals;
case furlang::ir::binary_op_instruction_t::NotEq: return furvm::instruction_t::NotEquals;
case furlang::ir::binary_op_instruction_t::LessThan: return furvm::instruction_t::LessThan;
case furlang::ir::binary_op_instruction_t::GreaterThan: return furvm::instruction_t::GreaterThan;
case furlang::ir::binary_op_instruction_t::LessEq: return furvm::instruction_t::LessEqual;
case furlang::ir::binary_op_instruction_t::GreaterEq: return furvm::instruction_t::GreaterEqual;
// Unary
case furlang::ir::instruction_t::Pointerof: return furvm::instruction_t::Pointerof;
// Binary
case furlang::ir::instruction_t::Add: return furvm::instruction_t::Add;
case furlang::ir::instruction_t::Sub: return furvm::instruction_t::Sub;
case furlang::ir::instruction_t::Mul: return furvm::instruction_t::Mul;
case furlang::ir::instruction_t::Div: return furvm::instruction_t::Div;
case furlang::ir::instruction_t::Mod: return furvm::instruction_t::Mod;
case furlang::ir::instruction_t::Eq: return furvm::instruction_t::Equals;
case furlang::ir::instruction_t::NotEq: return furvm::instruction_t::NotEquals;
case furlang::ir::instruction_t::LessThan: return furvm::instruction_t::LessThan;
case furlang::ir::instruction_t::GreaterThan: return furvm::instruction_t::GreaterThan;
case furlang::ir::instruction_t::LessEq: return furvm::instruction_t::LessEqual;
case furlang::ir::instruction_t::GreaterEq: return furvm::instruction_t::GreaterEqual;
default: throw std::runtime_error("unreachable");
}
throw std::runtime_error("unreachable");
}
void furvm_generator::generate_instruction(furvm::mod& mod,
@@ -90,9 +94,30 @@ void furvm_generator::generate_instruction(furvm::mod& mod,
mod.bytecode().push_back((var >> 8) & 0xFF);
static_assert(sizeof(var) == 2, "sizeof(furvm::variable_t) has changed");
} break;
case furlang::ir::instruction_t::BinaryOp: {
const auto& op = dynamic_cast<const furlang::ir::binary_op_instruction&>(instr);
mod.bytecode().push_back(static_cast<furvm::byte>(binary_op_type(op.op_type())));
case furlang::ir::instruction_t::Add:
case furlang::ir::instruction_t::Sub:
case furlang::ir::instruction_t::Mul:
case furlang::ir::instruction_t::Div:
case furlang::ir::instruction_t::Mod:
case furlang::ir::instruction_t::Eq:
case furlang::ir::instruction_t::NotEq:
case furlang::ir::instruction_t::LessThan:
case furlang::ir::instruction_t::GreaterThan:
case furlang::ir::instruction_t::LessEq:
case furlang::ir::instruction_t::GreaterEq: {
mod.bytecode().push_back(static_cast<furvm::byte>(op_type(instr.type())));
if (ctx.variables.find(instr.destination().reg()) == ctx.variables.end()) {
ctx.variables[instr.destination().reg()] = ctx.variableCounter++;
}
auto var = ctx.variables[instr.destination().reg()];
mod.bytecode().push_back(static_cast<furvm::byte>(furvm::instruction_t::Store));
mod.bytecode().push_back((var >> 0) & 0xFF);
mod.bytecode().push_back((var >> 8) & 0xFF);
static_assert(sizeof(var) == 2, "sizeof(furvm::variable_t) has changed");
} break;
case furlang::ir::instruction_t::Pointerof: {
mod.bytecode().push_back(static_cast<furvm::byte>(op_type(instr.type())));
if (ctx.variables.find(instr.destination().reg()) == ctx.variables.end()) {
ctx.variables[instr.destination().reg()] = ctx.variableCounter++;