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https://github.com/c64scene-ar/llvm-6502.git
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70b0751080
Introduce the ``llvm.instrprof_increment`` intrinsic and the ``-instrprof`` pass. These provide the infrastructure for writing counters for profiling, as in clang's ``-fprofile-instr-generate``. The implementation of the instrprof pass is ported directly out of the CodeGenPGO classes in clang, and with the followup in clang that rips that code out to use these new intrinsics this ends up being NFC. Doing the instrumentation this way opens some doors in terms of improving the counter performance. For example, this will make it simple to experiment with alternate lowering strategies, and allows us to try handling profiling specially in some optimizations if we want to. Finally, this drastically simplifies the frontend and puts all of the lowering logic in one place. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223672 91177308-0d34-0410-b5e6-96231b3b80d8
111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
//===- Transforms/Instrumentation.h - Instrumentation passes ----*- 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 constructor functions for instrumentation passes.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_INSTRUMENTATION_H
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#define LLVM_TRANSFORMS_INSTRUMENTATION_H
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#include "llvm/ADT/StringRef.h"
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#if defined(__GNUC__) && defined(__linux__) && !defined(ANDROID)
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inline void *getDFSanArgTLSPtrForJIT() {
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extern __thread __attribute__((tls_model("initial-exec")))
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void *__dfsan_arg_tls;
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return (void *)&__dfsan_arg_tls;
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}
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inline void *getDFSanRetValTLSPtrForJIT() {
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extern __thread __attribute__((tls_model("initial-exec")))
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void *__dfsan_retval_tls;
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return (void *)&__dfsan_retval_tls;
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}
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#endif
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namespace llvm {
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class ModulePass;
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class FunctionPass;
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// Insert GCOV profiling instrumentation
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struct GCOVOptions {
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static GCOVOptions getDefault();
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// Specify whether to emit .gcno files.
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bool EmitNotes;
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// Specify whether to modify the program to emit .gcda files when run.
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bool EmitData;
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// A four-byte version string. The meaning of a version string is described in
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// gcc's gcov-io.h
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char Version[4];
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// Emit a "cfg checksum" that follows the "line number checksum" of a
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// function. This affects both .gcno and .gcda files.
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bool UseCfgChecksum;
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// Add the 'noredzone' attribute to added runtime library calls.
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bool NoRedZone;
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// Emit the name of the function in the .gcda files. This is redundant, as
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// the function identifier can be used to find the name from the .gcno file.
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bool FunctionNamesInData;
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};
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ModulePass *createGCOVProfilerPass(const GCOVOptions &Options =
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GCOVOptions::getDefault());
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/// Options for the frontend instrumentation based profiling pass.
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struct InstrProfOptions {
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InstrProfOptions() : NoRedZone(false) {}
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// Add the 'noredzone' attribute to added runtime library calls.
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bool NoRedZone;
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};
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/// Insert frontend instrumentation based profiling.
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ModulePass *createInstrProfilingPass(
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const InstrProfOptions &Options = InstrProfOptions());
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// Insert AddressSanitizer (address sanity checking) instrumentation
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FunctionPass *createAddressSanitizerFunctionPass();
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ModulePass *createAddressSanitizerModulePass();
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// Insert MemorySanitizer instrumentation (detection of uninitialized reads)
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FunctionPass *createMemorySanitizerPass(int TrackOrigins = 0);
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// Insert ThreadSanitizer (race detection) instrumentation
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FunctionPass *createThreadSanitizerPass();
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// Insert DataFlowSanitizer (dynamic data flow analysis) instrumentation
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ModulePass *createDataFlowSanitizerPass(StringRef ABIListFile = StringRef(),
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void *(*getArgTLS)() = nullptr,
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void *(*getRetValTLS)() = nullptr);
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// Insert SanitizerCoverage instrumentation.
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ModulePass *createSanitizerCoverageModulePass(int CoverageLevel);
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#if defined(__GNUC__) && defined(__linux__) && !defined(ANDROID)
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inline ModulePass *createDataFlowSanitizerPassForJIT(StringRef ABIListFile =
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StringRef()) {
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return createDataFlowSanitizerPass(ABIListFile, getDFSanArgTLSPtrForJIT,
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getDFSanRetValTLSPtrForJIT);
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}
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#endif
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// BoundsChecking - This pass instruments the code to perform run-time bounds
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// checking on loads, stores, and other memory intrinsics.
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FunctionPass *createBoundsCheckingPass();
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} // End llvm namespace
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#endif
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