d3cdf0f222
Move common functions shared by TableGen Option Emitter and Options library to Support: - Move `StrCmpOptionName` and base it on the existing version in OptTable.cpp, with an additional mode to control fall back to case insensitive comparison. - Add `StrCmpOptionPrefixes` to compare prefixes and use zip() to iterate through lists of prefixes. - Rename `CompareOptionRecords` to less ambiguous name `IsOptionRecordLess`. - Merge 2 back-to-back ifs with same condition in `IsOptionRecordLess`. Fixes https://github.com/llvm/llvm-project/issues/107723
52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
//===- OptEmitter.cpp - Helper for emitting options -------------*- C++ -*-===//
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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 "OptEmitter.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/OptionStrCmp.h"
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#include "llvm/TableGen/Error.h"
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#include "llvm/TableGen/Record.h"
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// Returns true if A is ordered before B.
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bool llvm::IsOptionRecordsLess(const Record *A, const Record *B) {
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if (A == B)
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return false;
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// Sentinel options precede all others and are only ordered by precedence.
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const Record *AKind = A->getValueAsDef("Kind");
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const Record *BKind = B->getValueAsDef("Kind");
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bool ASent = AKind->getValueAsBit("Sentinel");
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bool BSent = BKind->getValueAsBit("Sentinel");
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if (ASent != BSent)
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return ASent;
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std::vector<StringRef> APrefixes = A->getValueAsListOfStrings("Prefixes");
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std::vector<StringRef> BPrefixes = B->getValueAsListOfStrings("Prefixes");
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// Compare options by name, unless they are sentinels.
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if (!ASent) {
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if (int Cmp = StrCmpOptionName(A->getValueAsString("Name"),
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B->getValueAsString("Name")))
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return Cmp < 0;
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if (int Cmp = StrCmpOptionPrefixes(APrefixes, BPrefixes))
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return Cmp < 0;
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}
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// Then by the kind precedence;
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int APrec = AKind->getValueAsInt("Precedence");
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int BPrec = BKind->getValueAsInt("Precedence");
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if (APrec == BPrec && APrefixes == BPrefixes) {
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PrintError(A->getLoc(), Twine("Option is equivalent to"));
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PrintError(B->getLoc(), Twine("Other defined here"));
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PrintFatalError("Equivalent Options found.");
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}
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return APrec < BPrec;
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}
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