mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-20 03:23:01 +02:00
489848165c
The CodeGenCoverage.h header is installed, but it references the build-only header "llvm/Config/config.h". This breaks use of the CodeGenCoverage.h header once it is installed, because config.h isn't available. This patch fixes the error by moving the config.h include from the CodeGenCoverage.h header (where it's not needed), to the CodeGenCoverage.cpp source file. llvm-svn: 318602
121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
//===- lib/Support/CodeGenCoverage.cpp -------------------------------------==//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
/// \file
|
|
/// This file implements the CodeGenCoverage class.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/CodeGenCoverage.h"
|
|
|
|
#include "llvm/Config/config.h"
|
|
#include "llvm/Support/Endian.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/Mutex.h"
|
|
#include "llvm/Support/ScopedPrinter.h"
|
|
#include "llvm/Support/ToolOutputFile.h"
|
|
|
|
#if LLVM_ON_UNIX
|
|
#include <unistd.h>
|
|
#elif LLVM_ON_WIN32
|
|
#include <windows.h>
|
|
#endif
|
|
|
|
using namespace llvm;
|
|
|
|
static sys::SmartMutex<true> OutputMutex;
|
|
|
|
CodeGenCoverage::CodeGenCoverage() {}
|
|
|
|
void CodeGenCoverage::setCovered(uint64_t RuleID) {
|
|
if (RuleCoverage.size() <= RuleID)
|
|
RuleCoverage.resize(RuleID + 1, 0);
|
|
RuleCoverage[RuleID] = true;
|
|
}
|
|
|
|
bool CodeGenCoverage::isCovered(uint64_t RuleID) {
|
|
if (RuleCoverage.size() <= RuleID)
|
|
return false;
|
|
return RuleCoverage[RuleID];
|
|
}
|
|
|
|
bool CodeGenCoverage::parse(MemoryBuffer &Buffer, StringRef BackendName) {
|
|
const char *CurPtr = Buffer.getBufferStart();
|
|
|
|
while (CurPtr != Buffer.getBufferEnd()) {
|
|
// Read the backend name from the input.
|
|
const char *LexedBackendName = CurPtr;
|
|
while (*CurPtr++ != 0)
|
|
;
|
|
if (CurPtr == Buffer.getBufferEnd())
|
|
return false; // Data is invalid, expected rule id's to follow.
|
|
|
|
bool IsForThisBackend = BackendName.equals(LexedBackendName);
|
|
while (CurPtr != Buffer.getBufferEnd()) {
|
|
if (std::distance(CurPtr, Buffer.getBufferEnd()) < 8)
|
|
return false; // Data is invalid. Not enough bytes for another rule id.
|
|
|
|
uint64_t RuleID = support::endian::read64(CurPtr, support::native);
|
|
CurPtr += 8;
|
|
|
|
// ~0ull terminates the rule id list.
|
|
if (RuleID == ~0ull)
|
|
break;
|
|
|
|
// Anything else, is recorded or ignored depending on whether it's
|
|
// intended for the backend we're interested in.
|
|
if (IsForThisBackend)
|
|
setCovered(RuleID);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool CodeGenCoverage::emit(StringRef CoveragePrefix,
|
|
StringRef BackendName) const {
|
|
if (!CoveragePrefix.empty() && !RuleCoverage.empty()) {
|
|
sys::SmartScopedLock<true> Lock(OutputMutex);
|
|
|
|
// We can handle locking within a process easily enough but we don't want to
|
|
// manage it between multiple processes. Use the process ID to ensure no
|
|
// more than one process is ever writing to the same file at the same time.
|
|
std::string Pid =
|
|
#if LLVM_ON_UNIX
|
|
llvm::to_string(::getpid());
|
|
#elif LLVM_ON_WIN32
|
|
llvm::to_string(::GetCurrentProcessId());
|
|
#else
|
|
"";
|
|
#endif
|
|
|
|
std::string CoverageFilename = (CoveragePrefix + Pid).str();
|
|
|
|
std::error_code EC;
|
|
sys::fs::OpenFlags OpenFlags = sys::fs::F_Append;
|
|
std::unique_ptr<ToolOutputFile> CoverageFile =
|
|
llvm::make_unique<ToolOutputFile>(CoverageFilename, EC, OpenFlags);
|
|
if (EC)
|
|
return false;
|
|
|
|
uint64_t Zero = 0;
|
|
uint64_t InvZero = ~0ull;
|
|
CoverageFile->os() << BackendName;
|
|
CoverageFile->os().write((const char *)&Zero, sizeof(unsigned char));
|
|
for (uint64_t I : RuleCoverage.set_bits())
|
|
CoverageFile->os().write((const char *)&I, sizeof(uint64_t));
|
|
CoverageFile->os().write((const char *)&InvZero, sizeof(uint64_t));
|
|
|
|
CoverageFile->keep();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void CodeGenCoverage::reset() { RuleCoverage.resize(0); }
|