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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
c6d35e1c4a
This implements a direction decided in a [recent discussion](https://docs.google.com/document/d/1Iut5f2TQBrtBNIduF4vJYOKfw7MbS8xH_J01_Q4e6Rk/edit?resourcekey=0-mc_vh5UzrzXfU4kO-3tOjA&tab=t.0#heading=h.mas1g68xx9ct) to switch away from "template constant" when naming a constant that doesn't depend on any generic parameters, because that creates confusion with template-dependent constant values that depend on a template parameter.
40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/sem_ir/constant.h"
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#include "toolchain/sem_ir/file.h"
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namespace Carbon::SemIR {
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auto ConstantStore::GetOrAdd(Inst inst, PhaseKind phase) -> ConstantId {
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auto result = map_.Insert(inst, [&] {
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auto inst_id = sem_ir_->insts().AddInNoBlock(LocIdAndInst::NoLoc(inst));
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ConstantId const_id = ConstantId::None;
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if (phase == IsConcrete) {
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const_id = SemIR::ConstantId::ForConcreteConstant(inst_id);
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} else {
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// The instruction in the constants store is an abstract symbolic
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// constant, not associated with any particular generic.
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SymbolicConstant symbolic_constant = {
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.inst_id = inst_id,
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.generic_id = GenericId::None,
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.index = GenericInstIndex::None,
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.period_self_only = (phase == IsPeriodSelfSymbolic)};
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const_id =
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sem_ir_->constant_values().AddSymbolicConstant(symbolic_constant);
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}
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sem_ir_->constant_values().Set(inst_id, const_id);
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constants_.push_back(inst_id);
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return const_id;
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});
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CARBON_CHECK(result.value() != ConstantId::None);
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CARBON_CHECK(
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result.value().is_symbolic() == (phase != IsConcrete),
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"Constant {0} registered as both symbolic and template constant.", inst);
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return result.value();
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}
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} // namespace Carbon::SemIR
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