71f8b441ed
By storing possible test vectors instead of combinations of conditions, the restriction is dramatically relaxed. This introduces two options to `cc1`: * `-fmcdc-max-conditions=32767` * `-fmcdc-max-test-vectors=2147483646` This change makes coverage mapping, profraw, and profdata incompatible with Clang-18. - Bitmap semantics changed. It is incompatible with previous format. - `BitmapIdx` in `Decision` points to the end of the bitmap. - Bitmap is packed per function. - `llvm-cov` can understand `profdata` generated by `llvm-profdata-18`. RFC: https://discourse.llvm.org/t/rfc-coverage-new-algorithm-and-file-format-for-mc-dc/76798 -- Change(s) since llvmorg-19-init-14288-g7ead2d8c7e91 - Update compiler-rt/test/profile/ContinuousSyncMode/image-with-mcdc.c
50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
//===---- MCDCState.h - Per-Function MC/DC state ----------------*- 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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//
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// Per-Function MC/DC state for PGO
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_CODEGEN_MCDCSTATE_H
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#define LLVM_CLANG_LIB_CODEGEN_MCDCSTATE_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ProfileData/Coverage/MCDCTypes.h"
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namespace clang {
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class Stmt;
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} // namespace clang
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namespace clang::CodeGen::MCDC {
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using namespace llvm::coverage::mcdc;
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/// Per-Function MC/DC state
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struct State {
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unsigned BitmapBits = 0;
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struct Decision {
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unsigned BitmapIdx;
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llvm::SmallVector<std::array<int, 2>> Indices;
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};
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llvm::DenseMap<const Stmt *, Decision> DecisionByStmt;
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struct Branch {
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ConditionID ID;
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const Stmt *DecisionStmt;
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};
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llvm::DenseMap<const Stmt *, Branch> BranchByStmt;
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};
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} // namespace clang::CodeGen::MCDC
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#endif // LLVM_CLANG_LIB_CODEGEN_MCDCSTATE_H
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