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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/builtins/builtins-bigint-gen.h"
#include "src/builtins/builtins-utils-gen.h"
#include "src/builtins/builtins.h"
#include "src/codegen/code-stub-assembler.h"
namespace v8 {
namespace internal {
// https://tc39.github.io/proposal-bigint/#sec-to-big-int64
TF_BUILTIN(BigIntToI64, CodeStubAssembler) {
if (!Is64()) {
Unreachable();
return;
}
TNode<Object> value = CAST(Parameter(Descriptor::kArgument));
TNode<Context> context = CAST(Parameter(Descriptor::kContext));
TNode<BigInt> n = ToBigInt(context, value);
TVARIABLE(UintPtrT, var_low);
TVARIABLE(UintPtrT, var_high);
BigIntToRawBytes(n, &var_low, &var_high);
ReturnRaw(var_low.value());
}
// https://tc39.github.io/proposal-bigint/#sec-to-big-int64
TF_BUILTIN(BigIntToI32Pair, CodeStubAssembler) {
if (!Is32()) {
Unreachable();
return;
}
TNode<Object> value = CAST(Parameter(Descriptor::kArgument));
TNode<Context> context = CAST(Parameter(Descriptor::kContext));
TNode<BigInt> bigint = ToBigInt(context, value);
TVARIABLE(UintPtrT, var_low);
TVARIABLE(UintPtrT, var_high);
BigIntToRawBytes(bigint, &var_low, &var_high);
Return(SloppyTNode<Object>(var_low.value()),
SloppyTNode<Object>(var_high.value()));
}
// https://tc39.github.io/proposal-bigint/#sec-bigint-constructor-number-value
TF_BUILTIN(I64ToBigInt, CodeStubAssembler) {
if (!Is64()) {
Unreachable();
return;
}
TNode<IntPtrT> argument =
UncheckedCast<IntPtrT>(Parameter(Descriptor::kArgument));
Return(BigIntFromInt64(argument));
}
// https://tc39.github.io/proposal-bigint/#sec-bigint-constructor-number-value
TF_BUILTIN(I32PairToBigInt, CodeStubAssembler) {
if (!Is32()) {
Unreachable();
return;
}
TNode<IntPtrT> low = UncheckedCast<IntPtrT>(Parameter(Descriptor::kLow));
TNode<IntPtrT> high = UncheckedCast<IntPtrT>(Parameter(Descriptor::kHigh));
Return(BigIntFromInt32Pair(low, high));
}
} // namespace internal
} // namespace v8