6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
46 lines
1.8 KiB
C++
46 lines
1.8 KiB
C++
//===- llvm/IR/DbgVariableFragmentInfo.h ------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Helper struct to describe a fragment of a debug variable.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
#ifndef LLVM_IR_DBGVARIABLEFRAGMENTINFO_H
|
|
#define LLVM_IR_DBGVARIABLEFRAGMENTINFO_H
|
|
|
|
#include <cstdint>
|
|
|
|
namespace llvm {
|
|
struct DbgVariableFragmentInfo {
|
|
DbgVariableFragmentInfo() = default;
|
|
DbgVariableFragmentInfo(uint64_t SizeInBits, uint64_t OffsetInBits)
|
|
: SizeInBits(SizeInBits), OffsetInBits(OffsetInBits) {}
|
|
uint64_t SizeInBits;
|
|
uint64_t OffsetInBits;
|
|
/// Return the index of the first bit of the fragment.
|
|
uint64_t startInBits() const { return OffsetInBits; }
|
|
/// Return the index of the bit after the end of the fragment, e.g. for
|
|
/// fragment offset=16 and size=32 return their sum, 48.
|
|
uint64_t endInBits() const { return OffsetInBits + SizeInBits; }
|
|
|
|
/// Returns a zero-sized fragment if A and B don't intersect.
|
|
static DbgVariableFragmentInfo intersect(DbgVariableFragmentInfo A,
|
|
DbgVariableFragmentInfo B) {
|
|
// Don't use std::max or min to avoid including <algorithm>.
|
|
uint64_t StartInBits =
|
|
A.OffsetInBits > B.OffsetInBits ? A.OffsetInBits : B.OffsetInBits;
|
|
uint64_t EndInBits =
|
|
A.endInBits() < B.endInBits() ? A.endInBits() : B.endInBits();
|
|
if (EndInBits <= StartInBits)
|
|
return {0, 0};
|
|
return DbgVariableFragmentInfo(EndInBits - StartInBits, StartInBits);
|
|
}
|
|
};
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_IR_DBGVARIABLEFRAGMENTINFO_H
|