[coverage] Block coverage with support for IfStatements

src/interpreter/bytecodes.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_INTERPRETER_BYTECODES_H_
 #define V8_INTERPRETER_BYTECODES_H_
 
 #include <cstdint>
 #include <iosfwd>
 #include <string>
@@ skipping 314 matching lines @@
     OperandType::kReg)                                                         \
   V(DebugBreak4, AccumulatorUse::kRead, OperandType::kReg, OperandType::kReg,  \
     OperandType::kReg, OperandType::kReg)                                      \
   V(DebugBreak5, AccumulatorUse::kRead, OperandType::kRuntimeId,               \
     OperandType::kReg, OperandType::kReg)                                      \
   V(DebugBreak6, AccumulatorUse::kRead, OperandType::kRuntimeId,               \
     OperandType::kReg, OperandType::kReg, OperandType::kReg)                   \
   V(DebugBreakWide, AccumulatorUse::kRead)                                     \
   V(DebugBreakExtraWide, AccumulatorUse::kRead)                                \
                                                                                \
+  /* Block Coverage */                                                         \
+  V(IncBlockCounter, AccumulatorUse::kNone, OperandType::kImm)                 \

[rmcilroy, 2017/05/18 14:17:59]

use kIdx if these are unsigned (will give more range in non-wide bytecodes and
no need to check DCHECK_GE(slot, 0); in the bytecode array-builder as this will
be done when converting to an operand.

[jgruber, 2017/05/22 09:43:32]

Done.

+                                                                               \
   /* Illegal bytecode (terminates execution) */                                \
   V(Illegal, AccumulatorUse::kNone)                                            \
                                                                                \
   /* No operation (used to maintain source positions for peephole */           \
   /* eliminated bytecodes). */                                                 \
   V(Nop, AccumulatorUse::kNone)
 
 // List of debug break bytecodes.
 #define DEBUG_BREAK_PLAIN_BYTECODE_LIST(V) \
   V(DebugBreak0)                           \
@@ skipping 542 matching lines @@
 };
 
 V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os,
                                            const Bytecode& bytecode);
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODES_H_