(CommandList
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      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:opt_buckets) op:Equal rhs:{(0)} spids:[124])]
          spids: [124]
        )
      terminator: <Op_Semi ";">
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:buckets) op:Equal rhs:{(SQ )} spids:[128])]
          spids: [128]
        )
      terminator: <Op_Semi ";">
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:opt_power) op:Equal rhs:{(0)} spids:[131])]
          spids: [131]
        )
      terminator: <Op_Semi ";">
    )
    (Sentence
      child: 
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          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:power) op:Equal rhs:{(4)} spids:[135])]
          spids: [135]
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    )
    (Sentence
      child: 
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          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:opt_max) op:Equal rhs:{(0)} spids:[139])]
          spids: [139]
        )
      terminator: <Op_Semi ";">
    )
    (Assignment
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      pairs: [
        (assign_pair
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          op: Equal
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              (ArithSubPart
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                  (ArithBinary
                    op_id: Arith_Star
                    left: (ArithWord w:{(Lit_Digits 1024)})
                    right: (ArithWord w:{(Lit_Digits 1024)})
                  )
                spids: [144 151]
              )
            }
          spids: [143]
        )
      ]
      spids: [143]
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:opt_filter) op:Equal rhs:{(0)} spids:[153])]
          spids: [153]
        )
      terminator: <Op_Semi ";">
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:filter) op:Equal rhs:{(SQ )} spids:[157])]
          spids: [157]
        )
      terminator: <Op_Semi ";">
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:duration) op:Equal rhs:{(0)} spids:[160])]
          spids: [160]
        )
      terminator: <Op_Semi ";">
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:debug) op:Equal rhs:{(0)} spids:[164])]
      spids: [164]
    )
    (C {(trap)} {(SQ <":">)} {(INT)} {(QUIT)} {(TERM)} {(PIPE)} {(HUP)})
    (FuncDef
      name: usage
      body: 
        (BraceGroup
          children: [
            (SimpleCommand
              words: [{(cat)}]
              redirects: [
                (HereDoc
                  op_id: Redir_DLessDash
                  fd: -1
                  body: 
                    {
                      (DQ ("USAGE: perf-stat-hist [-h] [-b buckets|-P power] [-m max] [-f filter]\n") 
                        ("                      tracepoint variable [seconds]\n") ("                 -b buckets      # specify histogram bucket points\n") 
                        ("                 -P power        # power-of (default is 4)\n") ("                 -m max          # max value for power-of\n") 
                        ("                 -f filter       # specify a filter \n") ("                 -h              # this usage message\n") ("   eg,\n") 
                        ("       perf-stat-hist syscalls:sys_enter_read count 5\n") ("                 # read() request histogram, 5 seconds\n") 
                        ("       perf-stat-hist syscalls:sys_exit_read ret 5\n") ("                 # read() return histogram, 5 seconds\n") 
                        ("       perf-stat-hist -P 10 syscalls:sys_exit_read ret 5\n") ("                 # ... use power-of-10\n") 
                        ("       perf-stat-hist -P 2 -m 1024 syscalls:sys_exit_read ret 5\n") ("                 # ... use power-of-2, max 1024\n") ("       perf-stat-hist -b ") 
                        (Right_DoubleQuote "\"") ("10 50 100 500") (Right_DoubleQuote "\"") (" syscalls:sys_exit_read ret 5\n") 
                        ("                 # ... histogram based on these bucket ranges\n") ("       perf-stat-hist -b 10 syscalls:sys_exit_read ret 5\n") 
                        ("                 # ... bifurcate by the value 10 (lowest overhead)\n") ("       perf-stat-hist -f 'rwbs == ") (Right_DoubleQuote "\"") (WS) (Right_DoubleQuote "\"") 
                        ("' block:block_rq_complete nr_sector 5\n") ("                 # ... synchronous writes histogram, 5 seconds\n") ("\n") 
                        ("See the man page and example file for more info.\n")
                      )
                    }
                  do_expansion: True
                  here_end: END
                  was_filled: True
                  spids: [193]
                )
                (Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[196])
              ]
            )
            (C {(exit)})
          ]
          spids: [188]
        )
      spids: [184 187]
    )
    (FuncDef
      name: die
      body: 
        (BraceGroup
          children: [
            (SimpleCommand
              words: [{(echo)} {(DQ ($ VSub_At "$@"))}]
              redirects: [(Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[246])]
            )
            (C {(exit)} {(1)})
          ]
          spids: [241]
        )
      spids: [237 240]
    )
    (While
      cond: [
        (C {(getopts)} 
          {(b) (Lit_Other ":") (hm) (Lit_Other ":") (P) (Lit_Other ":") (f) (Lit_Other ":")} {(opt)}
        )
      ]
      body: 
        (DoGroup
          children: [
            (Case
              to_match: {($ VSub_Name "$opt")}
              arms: [
                (case_arm
                  pat_list: [{(b)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:opt_buckets)
                              op: Equal
                              rhs: {(1)}
                              spids: [292]
                            )
                          ]
                          spids: [292]
                        )
                      terminator: <Op_Semi ";">
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:buckets)
                          op: Equal
                          rhs: {(ArrayLiteralPart words:[{($ VSub_Name "$OPTARG")}])}
                          spids: [296]
                        )
                      ]
                      spids: [296]
                    )
                  ]
                  spids: [289 290 301 -1]
                )
                (case_arm
                  pat_list: [{(P)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:opt_power)
                              op: Equal
                              rhs: {(1)}
                              spids: [307]
                            )
                          ]
                          spids: [307]
                        )
                      terminator: <Op_Semi ";">
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:power)
                          op: Equal
                          rhs: {($ VSub_Name "$OPTARG")}
                          spids: [311]
                        )
                      ]
                      spids: [311]
                    )
                  ]
                  spids: [304 305 314 -1]
                )
                (case_arm
                  pat_list: [{(m)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:opt_max)
                              op: Equal
                              rhs: {(1)}
                              spids: [320]
                            )
                          ]
                          spids: [320]
                        )
                      terminator: <Op_Semi ";">
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:max)
                          op: Equal
                          rhs: {($ VSub_Name "$OPTARG")}
                          spids: [324]
                        )
                      ]
                      spids: [324]
                    )
                  ]
                  spids: [317 318 327 -1]
                )
                (case_arm
                  pat_list: [{(f)}]
                  action: [
                    (Sentence
                      child: 
                        (Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (LhsName name:opt_filter)
                              op: Equal
                              rhs: {(1)}
                              spids: [333]
                            )
                          ]
                          spids: [333]
                        )
                      terminator: <Op_Semi ";">
                    )
                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:filter)
                          op: Equal
                          rhs: {(DQ ($ VSub_Name "$OPTARG") (" && "))}
                          spids: [337]
                        )
                      ]
                      spids: [337]
                    )
                  ]
                  spids: [330 331 343 -1]
                )
                (case_arm
                  pat_list: [{(h)} {(Lit_Other "?")}]
                  action: [(C {(usage)})]
                  spids: [346 349 353 -1]
                )
              ]
              spids: [282 286 356]
            )
          ]
          spids: [279 358]
        )
    )
    (C {(shift)} 
      {
        (ArithSubPart
          anode: 
            (ArithBinary
              op_id: Arith_Minus
              left: (ArithWord w:{($ VSub_Name "$OPTIND")})
              right: (ArithWord w:{(Lit_Digits 1)})
            )
          spids: [362 371]
        )
      }
    )
    (AndOr
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        (DParen
          child: 
            (ArithBinary
              op_id: Arith_Less
              left: (ArithWord w:{($ VSub_Pound "$#")})
              right: (ArithWord w:{(Lit_Digits 2)})
            )
        )
        (C {(usage)})
      ]
      op_id: Op_DAmp
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:tpoint) op:Equal rhs:{($ VSub_Number "$1")} spids:[388])]
      spids: [388]
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:var) op:Equal rhs:{($ VSub_Number "$2")} spids:[394])]
      spids: [394]
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:duration) op:Equal rhs:{(${ VSub_Number 3)} spids:[400])]
      spids: [400]
    )
    (AndOr
      children: [
        (DParen
          child: 
            (ArithBinary
              op_id: Arith_DAmp
              left: (ArithVarRef name:opt_buckets)
              right: (ArithVarRef name:opt_power)
            )
        )
        (C {(die)} {(DQ ("ERROR: use either -b or -P"))})
      ]
      op_id: Op_DAmp
    )
    (AndOr
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        (DParen
          child: 
            (ArithBinary
              op_id: Arith_DAmp
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              right: 
                (ArithBinary
                  op_id: Arith_Less
                  left: (ArithVarRef name:power)
                  right: (ArithWord w:{(Lit_Digits 2)})
                )
            )
        )
        (C {(die)} {(DQ ("ERROR: -P power must be 2 or higher"))})
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      op_id: Op_DAmp
    )
    (If
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        (if_arm
          cond: [
            (Pipeline
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                (SimpleCommand
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                    {(grep)}
                    {
                      (DQ ("^") ($ VSub_Name "$tpoint") 
                        (EscapedLiteralPart token:<Lit_EscapedChar "\\$">)
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                    }
                    {(/sys/kernel/debug/tracing/available_events)}
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                  redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{(/dev/null)} spids:[469])]
                )
              ]
              negated: True
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          ]
          action: [
            (SimpleCommand
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                {(echo)}
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                  (DQ ("ERROR: tracepoint ") (EscapedLiteralPart token:<Lit_EscapedChar "\\\"">) 
                    ($ VSub_Name "$tpoint") (EscapedLiteralPart token:<Lit_EscapedChar "\\\"">) (" not found. Exiting...")
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              ]
              redirects: [(Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[478])]
            )
            (AndOr
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                (DBracket
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                    (BoolBinary
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                      right: {(DQ (root))}
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                (SimpleCommand
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                  redirects: [(Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[508])]
                )
              ]
              op_id: Op_DAmp
            )
            (C {(exit)} {(1)})
          ]
          spids: [-1 473]
        )
      ]
      spids: [-1 520]
    )
    (If
      arms: [
        (if_arm
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            (Sentence
              child: (DParen child:(ArithUnary op_id:Arith_Bang child:(ArithVarRef name:opt_buckets)))
              terminator: <Op_Semi ";">
            )
          ]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(LhsName name:b) op:Equal rhs:{(0)} spids:[540])]
              spids: [540]
            )
            (Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(LhsName name:s) op:Equal rhs:{(1)} spids:[544])]
              spids: [544]
            )
            (While
              cond: [
                (Sentence
                  child: 
                    (DParen
                      child: 
                        (ArithBinary
                          op_id: Arith_LessEqual
                          left: (ArithVarRef name:s)
                          right: (ArithVarRef name:max)
                        )
                    )
                  terminator: <Op_Semi ";">
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              ]
              body: 
                (DoGroup
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                    (Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (LhsName name:b)
                          op: Equal
                          rhs: {(DQ ($ VSub_Name "$b") (" ") ($ VSub_Name "$s"))}
                          spids: [565]
                        )
                      ]
                      spids: [565]
                    )
                    (DParen
                      child: 
                        (BinaryAssign
                          op_id: Arith_StarEqual
                          left: (LhsName name:s)
                          right: (ArithVarRef name:power)
                        )
                    )
                  ]
                  spids: [562 585]
                )
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:buckets)
                  op: Equal
                  rhs: {(ArrayLiteralPart words:[{($ VSub_Name "$b")}])}
                  spids: [588]
                )
              ]
              spids: [588]
            )
          ]
          spids: [-1 537]
        )
      ]
      spids: [-1 593]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:max)
          op: Equal
          rhs: 
            {
              (BracedVarSub
                token: <VSub_Name buckets>
                bracket_op: 
                  (ArrayIndex
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                      (ArithBinary
                        op_id: Arith_Minus
                        left: 
                          (ArithWord
                            w: 
                              {
                                (BracedVarSub
                                  token: <VSub_Name buckets>
                                  prefix_op: VSub_Pound
                                  bracket_op: (WholeArray op_id:Lit_At)
                                  spids: [603 609]
                                )
                              }
                          )
                        right: (ArithWord w:{(Lit_Digits 1)})
                      )
                  )
                spids: [600 615]
              )
            }
          spids: [599]
        )
      ]
      spids: [599]
    )
    (DParen
      child: 
        (BinaryAssign
          op_id: Arith_Equal
          left: (LhsName name:max_i)
          right: 
            (ArithBinary
              op_id: Arith_Minus
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                (ArithWord
                  w: 
                    {
                      (BracedVarSub
                        token: <VSub_Name buckets>
                        prefix_op: VSub_Pound
                        bracket_op: (WholeArray op_id:Arith_Star)
                        spids: [625 631]
                      )
                    }
                )
              right: (ArithWord w:{(Lit_Digits 1)})
            )
        )
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:tpoints)
          op: Equal
          rhs: 
            {
              (DQ ("-e ") ($ VSub_Name "$tpoint") (" --filter ") 
                (EscapedLiteralPart token:<Lit_EscapedChar "\\\"">) ($ VSub_Name "$filter") (" ") ($ VSub_Name "$var") (" < ") 
                (BracedVarSub
                  token: <VSub_Name buckets>
                  bracket_op: (ArrayIndex expr:(ArithWord w:{(Lit_Digits 0)}))
                  spids: [649 654]
                ) (EscapedLiteralPart token:<Lit_EscapedChar "\\\"">)
              )
            }
          spids: [639]
        )
      ]
      spids: [639]
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:awkarray) op:Equal rhs:{(SQ )} spids:[658])]
      spids: [658]
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:i) op:Equal rhs:{(0)} spids:[660])]
      spids: [660]
    )
    (While
      cond: [
        (Sentence
          child: 
            (DParen
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                (ArithBinary
                  op_id: Arith_Less
                  left: (ArithVarRef name:i)
                  right: (ArithVarRef name:max_i)
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          terminator: <Op_Semi ";">
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      body: 
        (DoGroup
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            (If
              arms: [
                (if_arm
                  cond: [
                    (Sentence
                      child: 
                        (DParen
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                                    (ArithWord
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                                        {
                                          (BracedVarSub
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                                              (ArrayIndex
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                                            spids: [688 693]
                                          )
                                        }
                                    )
                                  right: 
                                    (ArithWord
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                                        {
                                          (BracedVarSub
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                                            bracket_op: 
                                              (ArrayIndex
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                                                  (ArithBinary
                                                    op_id: Arith_Minus
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                                                    right: (ArithWord w:{(Lit_Digits 1)})
                                                  )
                                              )
                                            spids: [697 706]
                                          )
                                        }
                                    )
                                )
                            )
                        )
                      terminator: <Op_Semi ";">
                    )
                  ]
                  action: [(C {(die)} {(DQ ("ERROR: bucket list must increase in size."))})]
                  spids: [-1 712]
                )
              ]
              spids: [-1 722]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:tpoints)
                  op: Equal
                  rhs: 
                    {
                      (DQ ($ VSub_Name "$tpoints") (" -e ") ($ VSub_Name "$tpoint") (" --filter ") 
                        (EscapedLiteralPart token:<Lit_EscapedChar "\\\"">) ($ VSub_Name "$filter") (" ") ($ VSub_Name "$var") (" >= ") 
                        (BracedVarSub
                          token: <VSub_Name buckets>
                          bracket_op: (ArrayIndex expr:(ArithWord w:{($ VSub_Name "$i")}))
                          spids: [736 741]
                        ) (" && ")
                      )
                    }
                  spids: [725]
                )
              ]
              spids: [725]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:tpoints)
                  op: Equal
                  rhs: 
                    {
                      (DQ ($ VSub_Name "$tpoints") (" ") ($ VSub_Name "$var") (" < ") 
                        (BracedVarSub
                          token: <VSub_Name buckets>
                          bracket_op: 
                            (ArrayIndex
                              expr: 
                                (ArithBinary
                                  op_id: Arith_Plus
                                  left: (ArithWord w:{($ VSub_Name "$i")})
                                  right: (ArithWord w:{(Lit_Digits 1)})
                                )
                            )
                          spids: [752 761]
                        ) (EscapedLiteralPart token:<Lit_EscapedChar "\\\"">)
                      )
                    }
                  spids: [746]
                )
              ]
              spids: [746]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:awkarray)
                  op: Equal
                  rhs: 
                    {
                      (DQ ($ VSub_Name "$awkarray") (" buckets[") ($ VSub_Name "$i") ("]=") 
                        (BracedVarSub
                          token: <VSub_Name buckets>
                          bracket_op: (ArrayIndex expr:(ArithWord w:{($ VSub_Name "$i")}))
                          spids: [772 777]
                        ) (";")
                      )
                    }
                  spids: [766]
                )
              ]
              spids: [766]
            )
            (DParen child:(UnaryAssign op_id:Node_PostDPlus child:(LhsName name:i)))
          ]
          spids: [677 790]
        )
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:awkarray)
          op: Equal
          rhs: 
            {
              (DQ ($ VSub_Name "$awkarray") (" buckets[") ($ VSub_Name "$max_i") ("]=") 
                (BracedVarSub
                  token: <VSub_Name buckets>
                  bracket_op: (ArrayIndex expr:(ArithWord w:{($ VSub_Name "$max_i")}))
                  spids: [798 803]
                ) (";")
              )
            }
          spids: [792]
        )
      ]
      spids: [792]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:tpoints)
          op: Equal
          rhs: 
            {
              (DQ ($ VSub_Name "$tpoints") (" -e ") ($ VSub_Name "$tpoint") (" --filter ") 
                (EscapedLiteralPart token:<Lit_EscapedChar "\\\"">) ($ VSub_Name "$filter") (" ") ($ VSub_Name "$var") (" >= ") 
                (BracedVarSub
                  token: <VSub_Name buckets>
                  bracket_op: (ArrayIndex expr:(ArithWord w:{($ VSub_Name "$max_i")}))
                  spids: [818 823]
                ) (EscapedLiteralPart token:<Lit_EscapedChar "\\\"">)
              )
            }
          spids: [807]
        )
      ]
      spids: [807]
    )
    (If
      arms: [
        (if_arm
          cond: [(Sentence child:(DParen child:(ArithVarRef name:debug)) terminator:<Op_Semi ";">)]
          action: [
            (C {(echo)} {(buckets) (Lit_Other ":")} 
              {
                (BracedVarSub
                  token: <VSub_Name buckets>
                  bracket_op: (WholeArray op_id:Arith_Star)
                  spids: [846 851]
                )
              }
            )
            (C {(echo)} {(tracepoints) (Lit_Other ":")} {($ VSub_Name "$tpoints")})
            (C {(echo)} {(awkarray) (Lit_Other ":")} 
              {
                (BracedVarSub
                  token: <VSub_Name awkarray>
                  bracket_op: (WholeArray op_id:Arith_Star)
                  spids: [867 872]
                )
              }
            )
          ]
          spids: [-1 838]
        )
      ]
      spids: [-1 874]
    )
    (If
      arms: [
        (if_arm
          cond: [(Sentence child:(DParen child:(ArithVarRef name:duration)) terminator:<Op_Semi ";">)]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:etext)
                  op: Equal
                  rhs: {(DQ ("for ") ($ VSub_Name "$duration") (" seconds"))}
                  spids: [893]
                )
              ]
              spids: [893]
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:cmd)
                  op: Equal
                  rhs: {(DQ ("sleep ") ($ VSub_Name "$duration"))}
                  spids: [901]
                )
              ]
              spids: [901]
            )
          ]
          spids: [-1 890]
        )
      ]
      else_action: [
        (Assignment
          keyword: Assign_None
          pairs: [
            (assign_pair
              lhs: (LhsName name:etext)
              op: Equal
              rhs: {(DQ ("until Ctrl-C"))}
              spids: [910]
            )
          ]
          spids: [910]
        )
        (Assignment
          keyword: Assign_None
          pairs: [
            (assign_pair
              lhs: (LhsName name:cmd)
              op: Equal
              rhs: {(DQ ("sleep 999999"))}
              spids: [916]
            )
          ]
          spids: [916]
        )
      ]
      spids: [907 921]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:p_tpoint)
          op: Equal
          rhs: {($ VSub_Name "$tpoint")}
          spids: [924]
        )
      ]
      spids: [924]
    )
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: (C {(Lit_Other "[")} {(-n)} {(DQ ($ VSub_Name "$filter"))} {(Lit_Other "]")})
              terminator: <Op_Semi ";">
            )
          ]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:p_tpoint)
                  op: Equal
                  rhs: 
                    {
                      (DQ ($ VSub_Name "$tpoint") (" (Filter: ") 
                        (BracedVarSub
                          token: <VSub_Name filter>
                          suffix_op: (StringUnary op_id:VOp1_Percent arg_word:{("????")})
                          spids: [948 952]
                        ) (")")
                      )
                    }
                  spids: [944]
                )
              ]
              spids: [944]
            )
          ]
          spids: [-1 940]
        )
      ]
      spids: [-1 956]
    )
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: (DParen child:(ArithVarRef name:opt_buckets))
              terminator: <Op_Semi ";">
            )
          ]
          action: [
            (C {(echo)} 
              {
                (DQ ("Tracing ") ($ VSub_Name "$p_tpoint") (", specified buckets, ") 
                  ($ VSub_Name "$etext") (...)
                )
              }
            )
          ]
          spids: [-1 969]
        )
      ]
      else_action: [
        (C {(echo)} 
          {
            (DQ ("Tracing ") ($ VSub_Name "$p_tpoint") (", power-of-") ($ VSub_Name "$power") (", max ") 
              ($ VSub_Name "$max") (", ") ($ VSub_Name "$etext") (...)
            )
          }
        )
      ]
      spids: [982 999]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:out)
          op: Equal
          rhs: {(DQ ("-o /dev/stdout"))}
          spids: [1005]
        )
      ]
      spids: [1005]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:stat)
          op: Equal
          rhs: 
            {
              (CommandSubPart
                command_list: 
                  (CommandList
                    children: [
                      (SimpleCommand
                        words: [
                          {(eval)}
                          {(perf)}
                          {(stat)}
                          {($ VSub_Name "$tpoints")}
                          {(-a)}
                          {($ VSub_Name "$out")}
                          {($ VSub_Name "$cmd")}
                        ]
                        redirects: [(Redir op_id:Redir_GreatAnd fd:2 arg_word:{(1)} spids:[1029])]
                      )
                    ]
                  )
                left_token: <Left_CommandSub "$(">
                spids: [1014 1031]
              )
            }
          spids: [1013]
        )
      ]
      spids: [1013]
    )
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: 
                (DParen
                  child: 
                    (ArithBinary
                      op_id: Arith_NEqual
                      left: (ArithWord w:{($ VSub_QMark "$?")})
                      right: (ArithWord w:{(Lit_Digits 0)})
                    )
                )
              terminator: <Op_Semi ";">
            )
          ]
          action: [
            (SimpleCommand
              words: [{(echo)} {(DQ ("ERROR running perf:"))}]
              redirects: [(Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[1052])]
            )
            (SimpleCommand
              words: [{(echo)} {(DQ ($ VSub_Name "$stat"))}]
              redirects: [(Redir op_id:Redir_GreatAnd fd:-1 arg_word:{(2)} spids:[1062])]
            )
            (C {(exit)})
          ]
          spids: [-1 1047]
        )
      ]
      spids: [-1 1072]
    )
    (If
      arms: [
        (if_arm
          cond: [(Sentence child:(DParen child:(ArithVarRef name:debug)) terminator:<Op_Semi ";">)]
          action: [
            (C {(echo)} {(raw)} {(output) (Lit_Other ":")})
            (C {(echo)} {(DQ ($ VSub_Name "$stat"))})
            (C {(echo)})
          ]
          spids: [-1 1085]
        )
      ]
      spids: [-1 1105]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:most)
          op: Equal
          rhs: 
            {
              (CommandSubPart
                command_list: 
                  (CommandList
                    children: [
                      (Pipeline
                        children: [
                          (C {(echo)} {(DQ ($ VSub_Name "$stat"))})
                          (C {(awk)} {(-v)} {(Lit_VarLike "tpoint=") ($ VSub_Name "$tpoint")} 
                            {
                              (SQ <"\n"> 
                                <"\t$2 == tpoint { gsub(/,/, \"\"); if ($1 > m) { m = $1 } }\n"> <"\tEND { print m }">
                              )
                            }
                          )
                        ]
                        negated: False
                      )
                    ]
                  )
                left_token: <Left_CommandSub "$(">
                spids: [1112 1134]
              )
            }
          spids: [1111]
        )
      ]
      spids: [1111]
    )
    (C {(echo)})
    (Pipeline
      children: [
        (C {(echo)} {(DQ ($ VSub_Name "$stat"))})
        (C {(awk)} {(-v)} {(Lit_VarLike "tpoint=") ($ VSub_Name "$tpoint")} {(-v)} 
          {(Lit_VarLike "max_i=") ($ VSub_Name "$max_i")} {(-v)} {(Lit_VarLike "most=") ($ VSub_Name "$most")} 
          {
            (SQ <"\n"> <"\tfunction star(sval, smax, swidth) {\n"> <"\t\tstars = \"\"\n"> 
              <"\t\tif (smax == 0) return \"\"\n"> <"\t\tfor (si = 0; si < (swidth * sval / smax); si++) {\n"> <"\t\t\tstars = stars \"#\"\n"> <"\t\t}\n"> 
              <"\t\treturn stars\n"> <"\t}\n"> <"\tBEGIN {\n"> <"\t\t">
            ) (DQ ($ VSub_Name "$awkarray")) 
            (SQ <"\n"> <"\t\tprintf(\"            %-15s: %-8s %s\\n\", \"Range\", \"Count\",\n"> 
              <"\t\t    \"Distribution\")\n"> <"\t}\n"> <"\t/Performance counter stats/ { i = -1 }\n"> 
              <"\t# reverse order of rule set is important\n"> <"\t{ ok = 0 }\n"> <"\t$2 == tpoint { num = $1; gsub(/,/, \"\", num); ok = 1 }\n"> 
              <"\tok && i >= max_i {\n"> <"\t\tprintf(\"   %10d -> %-10s: %-8s |%-38s|\\n\", buckets[i],\n"> 
              <"\t\t    \"\", num, star(num, most, 38))\n"> <"\t\tnext\n"> <"\t}\n"> <"\tok && i >= 0 && i < max_i {\n"> 
              <"\t\tprintf(\"   %10d -> %-10d: %-8s |%-38s|\\n\", buckets[i],\n"> <"\t\t    buckets[i+1] - 1, num, star(num, most, 38))\n"> <"\t\ti++\n"> <"\t\tnext\n"> <"\t}\n"> 
              <"\tok && i == -1 {\n"> <"\t\tprintf(\"   %10s -> %-10d: %-8s |%-38s|\\n\", \"\",\n"> 
              <"\t\t    buckets[0] - 1, num, star(num, most, 38))\n"> <"\t\ti++\n"> <"\t}\n">
            )
          }
        )
      ]
      negated: False
    )
  ]
)