mirror of
https://github.com/open-goal/jak-project.git
synced 2024-10-20 21:27:52 -04:00
248 lines
6.9 KiB
C++
248 lines
6.9 KiB
C++
#include "third-party/fmt/core.h"
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#include "Val.h"
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#include "Env.h"
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#include "IR.h"
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/*!
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* Fallback to_gpr if a more optimized one is not provided.
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*/
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RegVal* Val::to_gpr(Env* fe) {
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// TODO - handle 128-bit stuff here!
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auto rv = to_reg(fe);
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if (rv->ireg().reg_class == RegClass::GPR_64) {
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return rv;
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} else {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_RegSet>(re, rv));
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return re;
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}
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}
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/*!
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* Fallback to_fpr if a more optimized one is not provided.
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*/
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RegVal* Val::to_fpr(Env* fe) {
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auto rv = to_reg(fe);
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if (rv->ireg().reg_class == RegClass::FLOAT) {
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return rv;
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} else {
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auto re = fe->make_fpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_RegSet>(re, rv));
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return re;
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}
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}
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RegVal* RegVal::to_reg(Env* fe) {
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(void)fe;
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return this;
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}
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RegVal* RegVal::to_gpr(Env* fe) {
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(void)fe;
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if (m_ireg.reg_class == RegClass::GPR_64) {
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return this;
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} else {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_RegSet>(re, this));
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return re;
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}
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}
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RegVal* RegVal::to_fpr(Env* fe) {
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(void)fe;
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if (m_ireg.reg_class == RegClass::FLOAT) {
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return this;
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} else {
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auto re = fe->make_fpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_RegSet>(re, this));
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return re;
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}
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}
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void RegVal::set_rlet_constraint(emitter::Register reg) {
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m_rlet_constraint = reg;
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}
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const std::optional<emitter::Register>& RegVal::rlet_constraint() const {
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return m_rlet_constraint;
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}
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RegVal* IntegerConstantVal::to_reg(Env* fe) {
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auto rv = fe->make_gpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_LoadConstant64>(rv, m_value));
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return rv;
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}
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RegVal* SymbolVal::to_reg(Env* fe) {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_LoadSymbolPointer>(re, m_name));
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return re;
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}
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RegVal* SymbolValueVal::to_reg(Env* fe) {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_GetSymbolValue>(re, m_sym, m_sext));
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return re;
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}
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RegVal* StaticVal::to_reg(Env* fe) {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_StaticVarAddr>(re, obj));
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return re;
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}
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RegVal* LambdaVal::to_reg(Env* fe) {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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assert(func);
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fe->emit(std::make_unique<IR_FunctionAddr>(re, func));
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return re;
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}
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RegVal* InlinedLambdaVal::to_reg(Env* fe) {
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throw std::runtime_error("Cannot put InlinedLambdaVal in a register.");
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return lv->to_reg(fe);
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}
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RegVal* FloatConstantVal::to_reg(Env* fe) {
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auto re = fe->make_fpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_StaticVarLoad>(re, m_value));
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return re;
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}
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namespace {
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/*!
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* Constant propagate nested MemoryOffsetConstantVal's to get a single base + offset.
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*/
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Val* get_constant_offset_and_base(MemoryOffsetConstantVal* in, int64_t* offset_out) {
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Val* next_base = in->base;
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s64 total_offset = in->offset;
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while (dynamic_cast<MemoryOffsetConstantVal*>(next_base)) {
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auto bac = dynamic_cast<MemoryOffsetConstantVal*>(next_base);
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total_offset += bac->offset;
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next_base = bac->base;
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}
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*offset_out = total_offset;
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return next_base;
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}
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} // namespace
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RegVal* MemoryOffsetConstantVal::to_reg(Env* fe) {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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s64 final_offset;
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auto final_base = get_constant_offset_and_base(this, &final_offset);
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if (final_offset == 0) {
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fe->emit_ir<IR_RegSet>(re, final_base->to_gpr(fe));
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} else {
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fe->emit(std::make_unique<IR_LoadConstant64>(re, int64_t(final_offset)));
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fe->emit(std::make_unique<IR_IntegerMath>(IntegerMathKind::ADD_64, re, final_base->to_gpr(fe)));
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}
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return re;
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}
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RegVal* MemoryOffsetVal::to_reg(Env* fe) {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_RegSet>(re, offset->to_gpr(fe)));
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fe->emit(std::make_unique<IR_IntegerMath>(IntegerMathKind::ADD_64, re, base->to_gpr(fe)));
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return re;
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}
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RegVal* MemoryDerefVal::to_reg(Env* fe) {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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auto base_as_co = dynamic_cast<MemoryOffsetConstantVal*>(base);
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if (base_as_co) {
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s64 offset;
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auto final_base = get_constant_offset_and_base(base_as_co, &offset);
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fe->emit_ir<IR_LoadConstOffset>(re, offset, final_base->to_gpr(fe), info);
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} else {
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auto addr = base->to_gpr(fe);
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fe->emit(std::make_unique<IR_LoadConstOffset>(re, 0, addr, info));
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}
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return re;
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}
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RegVal* MemoryDerefVal::to_fpr(Env* fe) {
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auto base_as_co = dynamic_cast<MemoryOffsetConstantVal*>(base);
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auto re = fe->make_fpr(coerce_to_reg_type(m_ts));
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if (base_as_co) {
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s64 offset;
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auto final_base = get_constant_offset_and_base(base_as_co, &offset);
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fe->emit_ir<IR_LoadConstOffset>(re, offset, final_base->to_gpr(fe), info);
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} else {
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auto addr = base->to_gpr(fe);
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fe->emit(std::make_unique<IR_LoadConstOffset>(re, 0, addr, info));
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}
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return re;
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}
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RegVal* AliasVal::to_reg(Env* fe) {
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auto as_old_type = base->to_reg(fe);
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auto result = fe->make_ireg(m_ts, as_old_type->ireg().reg_class);
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fe->emit(std::make_unique<IR_RegSet>(result, as_old_type));
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return result;
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}
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std::string PairEntryVal::print() const {
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if (is_car) {
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return fmt::format("[car of {}]", base->print());
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} else {
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return fmt::format("[cdr of {}]", base->print());
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}
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}
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RegVal* PairEntryVal::to_reg(Env* fe) {
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int offset = is_car ? -2 : 2;
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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MemLoadInfo info;
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info.reg = RegClass::GPR_64;
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info.sign_extend = true;
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info.size = 4;
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fe->emit(std::make_unique<IR_LoadConstOffset>(re, offset, base->to_gpr(fe), info));
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return re;
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}
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RegVal* StackVarAddrVal::to_reg(Env* fe) {
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auto re = fe->make_gpr(coerce_to_reg_type(m_ts));
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fe->emit(std::make_unique<IR_GetStackAddr>(re, m_slot));
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return re;
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}
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std::string BitFieldVal::print() const {
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return fmt::format("[bitfield sz {} off {} sx {} of {}]", m_size, m_offset, m_sign_extend,
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m_parent->print());
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}
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RegVal* BitFieldVal::to_reg(Env* env) {
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// first get the parent value
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auto parent_reg = m_parent->to_gpr(env);
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auto fe = get_parent_env_of_type<FunctionEnv>(env);
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auto result = fe->make_ireg(coerce_to_reg_type(m_ts), RegClass::GPR_64);
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env->emit(std::make_unique<IR_RegSet>(result, parent_reg));
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int start_bit = m_offset;
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int end_bit = m_offset + m_size;
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int epad = 64 - end_bit;
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assert(epad >= 0);
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int spad = start_bit;
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// shift left as much as possible to kill upper bits
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if (epad > 0) {
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env->emit(std::make_unique<IR_IntegerMath>(IntegerMathKind::SHL_64, result, epad));
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}
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int next_shift = epad + spad;
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assert(next_shift + m_size == 64);
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assert(next_shift >= 0);
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if (next_shift > 0) {
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if (m_sign_extend) {
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env->emit(std::make_unique<IR_IntegerMath>(IntegerMathKind::SAR_64, result, next_shift));
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} else {
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env->emit(std::make_unique<IR_IntegerMath>(IntegerMathKind::SHR_64, result, next_shift));
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}
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}
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return result;
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} |