llvm/llvm/test/tools/llvm-xray/X86/account-recursive-calls-only-tail-call-deduction.yaml

# RUN: llvm-xray account -d %s -m %S/Inputs/simple-instrmap.yaml | FileCheck --check-prefixes=ALL %s
# RUN: llvm-xray account -d --recursive-calls-only %s -m %S/Inputs/simple-instrmap.yaml | FileCheck --check-prefixes=RECURSIVE %s

---
header:
  version: 1
  type: 0
  constant-tsc: true
  nonstop-tsc: true
  cycle-frequency: 0
records:
# Here we reconstruct the following call trace:
#
#   f1()
#     f2()
#       f3()
#   f2()
#
# But we find that we're missing an exit record for f2() because it's
# tail-called f3(). We make sure that if we see a trace like this that we can
# deduce tail calls, and account the time (potentially wrongly) to f2() when
# f1() exits. That is because we don't go back to f3()'s entry record to
# properly do the math on the timing of f2().
#
# As a result, we can deduce that f2() is not recursive here.
#
# Note that by default, tail/sibling call deduction is disabled, and is enabled
# with a flag "-d" or "-deduce-sibling-calls".
#
  - { type: 0, func-id: 1, cpu: 1, thread: 111, kind: function-enter, tsc: 10000 }
  - { type: 0, func-id: 2, cpu: 1, thread: 111, kind: function-enter, tsc: 10001 }
  - { type: 0, func-id: 3, cpu: 1, thread: 111, kind: function-enter, tsc: 10002 }
  - { type: 0, func-id: 3, cpu: 1, thread: 111, kind: function-exit,  tsc: 10003 }
  - { type: 0, func-id: 1, cpu: 1, thread: 111, kind: function-exit,  tsc: 10004 }
  - { type: 0, func-id: 2, cpu: 1, thread: 111, kind: function-enter, tsc: 10005 }
  - { type: 0, func-id: 2, cpu: 1, thread: 111, kind: function-exit,  tsc: 10006 }
...

# ALL:      Functions with latencies: 3
# ALL-NEXT:    funcid      count [      min,       med,       90p,       99p,       max]       sum  function
# ALL-NEXT:         1          1 [ 4.000000,  4.000000,  4.000000,  4.000000,  4.000000]  4.000000  <invalid>:0:0: @(1)
# ALL-NEXT:         2          2 [ 1.000000,  3.000000,  3.000000,  3.000000,  3.000000]  4.000000  <invalid>:0:0: @(2)
# ALL-NEXT:         3          1 [ 1.000000,  1.000000,  1.000000,  1.000000,  1.000000]  1.000000  <invalid>:0:0: @(3)

# RECURSIVE:      Functions with latencies: 0
# RECURSIVE-NEXT:    funcid      count [      min,       med,       90p,       99p,       max]       sum  function