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When emitting optimization remarks, we test for the presence of instruction locations by testing for a valid llvm.dbg.cu annotation. This is slightly inefficient because we can simply ask whether the debug location we have is known or not. Additionally, if my current plan works, I will need to remove the llvm.dbg.cu annotation from the IL (or prevent it from being generated) when -Rpass is used without -g. In those cases, we'll want to generate line tables but we will want to prevent code generation from emitting DWARF code for them. Tested on x86_64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211204 91177308-0d34-0410-b5e6-96231b3b80d8
192 lines
7.2 KiB
C++
192 lines
7.2 KiB
C++
//===- llvm/Support/DiagnosticInfo.cpp - Diagnostic Definitions -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the different classes involved in low level diagnostics.
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//
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// Diagnostics reporting is still done as part of the LLVMContext.
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//===----------------------------------------------------------------------===//
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#include "LLVMContextImpl.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DebugInfo.h"
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#include "llvm/IR/DiagnosticInfo.h"
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#include "llvm/IR/DiagnosticPrinter.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Instruction.h"
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#include "llvm/IR/Metadata.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/Atomic.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Regex.h"
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#include <string>
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using namespace llvm;
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namespace {
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/// \brief Regular expression corresponding to the value given in one of the
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/// -pass-remarks* command line flags. Passes whose name matches this regexp
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/// will emit a diagnostic when calling the associated diagnostic function
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/// (emitOptimizationRemark, emitOptimizationRemarkMissed or
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/// emitOptimizationRemarkAnalysis).
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struct PassRemarksOpt {
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std::shared_ptr<Regex> Pattern;
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void operator=(const std::string &Val) {
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// Create a regexp object to match pass names for emitOptimizationRemark.
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if (!Val.empty()) {
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Pattern = std::make_shared<Regex>(Val);
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std::string RegexError;
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if (!Pattern->isValid(RegexError))
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report_fatal_error("Invalid regular expression '" + Val +
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"' in -pass-remarks: " + RegexError,
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false);
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}
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};
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};
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static PassRemarksOpt PassRemarksOptLoc;
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static PassRemarksOpt PassRemarksMissedOptLoc;
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static PassRemarksOpt PassRemarksAnalysisOptLoc;
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// -pass-remarks
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// Command line flag to enable emitOptimizationRemark()
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static cl::opt<PassRemarksOpt, true, cl::parser<std::string>>
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PassRemarks("pass-remarks", cl::value_desc("pattern"),
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cl::desc("Enable optimization remarks from passes whose name match "
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"the given regular expression"),
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cl::Hidden, cl::location(PassRemarksOptLoc), cl::ValueRequired,
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cl::ZeroOrMore);
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// -pass-remarks-missed
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// Command line flag to enable emitOptimizationRemarkMissed()
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static cl::opt<PassRemarksOpt, true, cl::parser<std::string>> PassRemarksMissed(
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"pass-remarks-missed", cl::value_desc("pattern"),
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cl::desc("Enable missed optimization remarks from passes whose name match "
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"the given regular expression"),
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cl::Hidden, cl::location(PassRemarksMissedOptLoc), cl::ValueRequired,
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cl::ZeroOrMore);
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// -pass-remarks-analysis
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// Command line flag to enable emitOptimizationRemarkAnalysis()
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static cl::opt<PassRemarksOpt, true, cl::parser<std::string>>
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PassRemarksAnalysis(
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"pass-remarks-analysis", cl::value_desc("pattern"),
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cl::desc(
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"Enable optimization analysis remarks from passes whose name match "
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"the given regular expression"),
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cl::Hidden, cl::location(PassRemarksAnalysisOptLoc), cl::ValueRequired,
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cl::ZeroOrMore);
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}
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int llvm::getNextAvailablePluginDiagnosticKind() {
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static sys::cas_flag PluginKindID = DK_FirstPluginKind;
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return (int)sys::AtomicIncrement(&PluginKindID);
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}
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DiagnosticInfoInlineAsm::DiagnosticInfoInlineAsm(const Instruction &I,
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const Twine &MsgStr,
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DiagnosticSeverity Severity)
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: DiagnosticInfo(DK_InlineAsm, Severity), LocCookie(0), MsgStr(MsgStr),
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Instr(&I) {
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if (const MDNode *SrcLoc = I.getMetadata("srcloc")) {
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if (SrcLoc->getNumOperands() != 0)
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if (const ConstantInt *CI = dyn_cast<ConstantInt>(SrcLoc->getOperand(0)))
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LocCookie = CI->getZExtValue();
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}
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}
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void DiagnosticInfoInlineAsm::print(DiagnosticPrinter &DP) const {
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DP << getMsgStr();
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if (getLocCookie())
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DP << " at line " << getLocCookie();
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}
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void DiagnosticInfoStackSize::print(DiagnosticPrinter &DP) const {
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DP << "stack size limit exceeded (" << getStackSize() << ") in "
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<< getFunction();
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}
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void DiagnosticInfoDebugMetadataVersion::print(DiagnosticPrinter &DP) const {
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DP << "ignoring debug info with an invalid version (" << getMetadataVersion()
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<< ") in " << getModule();
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}
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void DiagnosticInfoSampleProfile::print(DiagnosticPrinter &DP) const {
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if (getFileName() && getLineNum() > 0)
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DP << getFileName() << ":" << getLineNum() << ": ";
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else if (getFileName())
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DP << getFileName() << ": ";
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DP << getMsg();
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}
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bool DiagnosticInfoOptimizationRemarkBase::isLocationAvailable() const {
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return getDebugLoc().isUnknown() == false;
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}
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void DiagnosticInfoOptimizationRemarkBase::getLocation(StringRef *Filename,
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unsigned *Line,
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unsigned *Column) const {
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DILocation DIL(getDebugLoc().getAsMDNode(getFunction().getContext()));
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*Filename = DIL.getFilename();
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*Line = DIL.getLineNumber();
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*Column = DIL.getColumnNumber();
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}
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const std::string DiagnosticInfoOptimizationRemarkBase::getLocationStr() const {
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StringRef Filename("<unknown>");
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unsigned Line = 0;
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unsigned Column = 0;
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if (isLocationAvailable())
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getLocation(&Filename, &Line, &Column);
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return Twine(Filename + ":" + Twine(Line) + ":" + Twine(Column)).str();
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}
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void DiagnosticInfoOptimizationRemarkBase::print(DiagnosticPrinter &DP) const {
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DP << getLocationStr() << ": " << getMsg();
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}
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bool DiagnosticInfoOptimizationRemark::isEnabled() const {
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return PassRemarksOptLoc.Pattern &&
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PassRemarksOptLoc.Pattern->match(getPassName());
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}
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bool DiagnosticInfoOptimizationRemarkMissed::isEnabled() const {
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return PassRemarksMissedOptLoc.Pattern &&
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PassRemarksMissedOptLoc.Pattern->match(getPassName());
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}
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bool DiagnosticInfoOptimizationRemarkAnalysis::isEnabled() const {
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return PassRemarksAnalysisOptLoc.Pattern &&
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PassRemarksAnalysisOptLoc.Pattern->match(getPassName());
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}
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void llvm::emitOptimizationRemark(LLVMContext &Ctx, const char *PassName,
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const Function &Fn, const DebugLoc &DLoc,
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const Twine &Msg) {
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Ctx.diagnose(DiagnosticInfoOptimizationRemark(PassName, Fn, DLoc, Msg));
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}
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void llvm::emitOptimizationRemarkMissed(LLVMContext &Ctx, const char *PassName,
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const Function &Fn,
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const DebugLoc &DLoc,
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const Twine &Msg) {
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Ctx.diagnose(DiagnosticInfoOptimizationRemarkMissed(PassName, Fn, DLoc, Msg));
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}
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void llvm::emitOptimizationRemarkAnalysis(LLVMContext &Ctx,
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const char *PassName,
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const Function &Fn,
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const DebugLoc &DLoc,
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const Twine &Msg) {
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Ctx.diagnose(
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DiagnosticInfoOptimizationRemarkAnalysis(PassName, Fn, DLoc, Msg));
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}
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