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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
//===- Types.cpp - Helper for the selection of C++ data types. ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Types.h"
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// For LLVM_ATTRIBUTE_UNUSED
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#include "llvm/Support/Compiler.h"
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#include <cassert>
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using namespace llvm;
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const char *llvm::getMinimalTypeForRange(uint64_t Range, unsigned MaxSize LLVM_ATTRIBUTE_UNUSED) {
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// TODO: The original callers only used 32 and 64 so these are the only
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// values permitted. Rather than widen the supported values we should
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// allow 64 for the callers that currently use 32 and remove the
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// argument altogether.
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assert((MaxSize == 32 || MaxSize == 64) && "Unexpected size");
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assert(MaxSize <= 64 && "Unexpected size");
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assert(((MaxSize > 32) ? Range <= 0xFFFFFFFFFFFFFFFFULL
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: Range <= 0xFFFFFFFFULL) &&
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"Enum too large");
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if (Range > 0xFFFFFFFFULL)
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return "uint64_t";
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if (Range > 0xFFFF)
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return "uint32_t";
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if (Range > 0xFF)
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return "uint16_t";
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return "uint8_t";
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}
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const char *llvm::getMinimalTypeForEnumBitfield(uint64_t Size) {
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uint64_t MaxIndex = Size;
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if (MaxIndex > 0)
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MaxIndex--;
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assert(MaxIndex <= 64 && "Too many bits");
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return getMinimalTypeForRange(1ULL << MaxIndex);
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}
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