Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 207 insertions, 0 deletions

diff --git a/js/src/jit/PerfSpewer.h b/js/src/jit/PerfSpewer.h
new file mode 100644
index 0000000000..659194526d
--- /dev/null
+++ b/js/src/jit/PerfSpewer.h
@@ -0,0 +1,207 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_PerfSpewer_h
+#define jit_PerfSpewer_h
+
+#ifdef JS_ION_PERF
+#  include <stdio.h>
+#endif
+#include "jit/BaselineFrameInfo.h"
+#include "jit/CacheIR.h"
+#include "jit/JitCode.h"
+#include "jit/LIR.h"
+#include "js/AllocPolicy.h"
+#include "js/JitCodeAPI.h"
+#include "js/Vector.h"
+#include "vm/JSScript.h"
+
+namespace js::jit {
+
+using ProfilerJitCodeVector = Vector<JS::JitCodeRecord, 0, SystemAllocPolicy>;
+
+void ResetPerfSpewer(bool enabled);
+
+struct AutoLockPerfSpewer {
+  AutoLockPerfSpewer();
+  ~AutoLockPerfSpewer();
+};
+
+class MBasicBlock;
+class MacroAssembler;
+
+bool PerfEnabled();
+
+class PerfSpewer {
+ protected:
+  struct OpcodeEntry {
+    uint32_t offset = 0;
+    unsigned opcode = 0;
+    jsbytecode* bytecodepc = nullptr;
+
+    // This string is used to replace the opcode, to define things like
+    // Prologue/Epilogue, or to add operand info.
+    UniqueChars str;
+
+    OpcodeEntry(uint32_t offset_, unsigned opcode_, UniqueChars& str_,
+                jsbytecode* pc)
+        : offset(offset_), opcode(opcode_), bytecodepc(pc) {
+      str = std::move(str_);
+    }
+
+    OpcodeEntry(uint32_t offset_, unsigned opcode_, UniqueChars& str_)
+        : offset(offset_), opcode(opcode_) {
+      str = std::move(str_);
+    }
+    OpcodeEntry(uint32_t offset_, UniqueChars& str_) : offset(offset_) {
+      str = std::move(str_);
+    }
+    OpcodeEntry(uint32_t offset_, unsigned opcode_)
+        : offset(offset_), opcode(opcode_) {}
+
+    OpcodeEntry(OpcodeEntry&& copy) {
+      offset = copy.offset;
+      opcode = copy.opcode;
+      bytecodepc = copy.bytecodepc;
+      str = std::move(copy.str);
+    }
+
+    // Do not copy the UniqueChars member.
+    OpcodeEntry(OpcodeEntry& copy) = delete;
+  };
+  Vector<OpcodeEntry, 0, SystemAllocPolicy> opcodes_;
+
+  uint32_t lir_opcode_length = 0;
+  uint32_t js_opcode_length = 0;
+
+  virtual JS::JitTier GetTier() { return JS::JitTier::Other; }
+
+  virtual const char* CodeName(unsigned op) = 0;
+
+  virtual void saveJitCodeSourceInfo(JSScript* script, JitCode* code,
+                                     JS::JitCodeRecord* record,
+                                     AutoLockPerfSpewer& lock) = 0;
+
+  void saveDebugInfo(JSScript* script, JitCode* code,
+                     JS::JitCodeRecord* profilerRecord,
+                     AutoLockPerfSpewer& lock);
+
+  void saveProfile(JitCode* code, UniqueChars& desc, JSScript* script);
+
+  void saveJitCodeIRInfo(JitCode* code, JS::JitCodeRecord* profilerRecord,
+                         AutoLockPerfSpewer& lock);
+
+ public:
+  PerfSpewer() = default;
+
+  void recordOffset(MacroAssembler& masm, const char*);
+
+  static void Init();
+
+  static void CollectJitCodeInfo(UniqueChars& function_name, JitCode* code,
+                                 JS::JitCodeRecord*, AutoLockPerfSpewer& lock);
+  static void CollectJitCodeInfo(UniqueChars& function_name, void* code_addr,
+                                 uint64_t code_size,
+                                 JS::JitCodeRecord* profilerRecord,
+                                 AutoLockPerfSpewer& lock);
+};
+
+void CollectPerfSpewerJitCodeProfile(JitCode* code, const char* msg);
+void CollectPerfSpewerJitCodeProfile(uintptr_t base, uint64_t size,
+                                     const char* msg);
+
+void CollectPerfSpewerWasmMap(uintptr_t base, uintptr_t size,
+                              const char* filename, const char* annotation);
+void CollectPerfSpewerWasmFunctionMap(uintptr_t base, uintptr_t size,
+                                      const char* filename, unsigned lineno,
+                                      const char* funcName);
+
+class IonPerfSpewer : public PerfSpewer {
+  JS::JitTier GetTier() override { return JS::JitTier::Ion; }
+  const char* CodeName(unsigned op) override;
+
+  void saveJitCodeSourceInfo(JSScript* script, JitCode* code,
+                             JS::JitCodeRecord* record,
+                             AutoLockPerfSpewer& lock) override;
+
+ public:
+  void recordInstruction(MacroAssembler& masm, LInstruction* ins);
+  void saveProfile(JSContext* cx, JSScript* script, JitCode* code);
+};
+
+class BaselineInterpreterPerfSpewer : public PerfSpewer {
+  JS::JitTier GetTier() override { return JS::JitTier::Baseline; }
+  const char* CodeName(unsigned op) override;
+
+  // Do nothing, BaselineInterpreter has no source to reference.
+  void saveJitCodeSourceInfo(JSScript* script, JitCode* code,
+                             JS::JitCodeRecord* record,
+                             AutoLockPerfSpewer& lock) override {}
+
+ public:
+  void recordOffset(MacroAssembler& masm, JSOp op);
+  void recordOffset(MacroAssembler& masm, const char* name);
+  void saveProfile(JitCode* code);
+};
+
+class BaselinePerfSpewer : public PerfSpewer {
+  JS::JitTier GetTier() override { return JS::JitTier::Baseline; }
+  const char* CodeName(unsigned op) override;
+
+  void saveJitCodeSourceInfo(JSScript* script, JitCode* code,
+                             JS::JitCodeRecord* record,
+                             AutoLockPerfSpewer& lock) override;
+
+ public:
+  void recordInstruction(JSContext* cx, MacroAssembler& masm, jsbytecode* pc,
+                         CompilerFrameInfo& frame);
+  void saveProfile(JSContext* cx, JSScript* script, JitCode* code);
+};
+
+class InlineCachePerfSpewer : public PerfSpewer {
+  JS::JitTier GetTier() override { return JS::JitTier::IC; }
+  const char* CodeName(unsigned op) override;
+
+  void saveJitCodeSourceInfo(JSScript* script, JitCode* code,
+                             JS::JitCodeRecord* record,
+                             AutoLockPerfSpewer& lock) override {
+    // IC stubs have no source code to reference.
+    return;
+  }
+
+ public:
+  void recordInstruction(MacroAssembler& masm, CacheOp op);
+};
+
+class BaselineICPerfSpewer : public InlineCachePerfSpewer {
+ public:
+  void saveProfile(JitCode* code, const char* stubName);
+};
+
+class IonICPerfSpewer : public InlineCachePerfSpewer {
+ public:
+  void saveProfile(JSContext* cx, JSScript* script, JitCode* code,
+                   const char* stubName);
+};
+
+class PerfSpewerRangeRecorder {
+  using OffsetPair = std::tuple<uint32_t, UniqueChars>;
+  Vector<OffsetPair, 0, js::SystemAllocPolicy> ranges;
+
+  MacroAssembler& masm;
+
+  void appendEntry(UniqueChars& desc);
+
+ public:
+  explicit PerfSpewerRangeRecorder(MacroAssembler& masm_) : masm(masm_){};
+  void recordOffset(const char* name);
+  void recordOffset(const char* name, JSContext* cx, JSScript* script);
+  void collectRangesForJitCode(JitCode* code);
+};
+
+}  // namespace js::jit
+
+#endif /* jit_PerfSpewer_h */