third_party/llvm-7.0/llvm/test/tools/llvm-xray/X86/graph-deduce-tail-call.yaml

#RUN: llvm-xray graph %s -o - -m %S/Inputs/simple-instrmap.yaml -d \
#RUN:    | FileCheck %s -check-prefix=EMPTY
#RUN: llvm-xray graph %s -o - -m %S/Inputs/simple-instrmap.yaml -d -e count \
#RUN:    | FileCheck %s -check-prefix=COUNT
#
#RUN: llvm-xray graph %s -o - -m %S/Inputs/simple-instrmap.yaml -d -e min \
#RUN:    | FileCheck %s -check-prefix=TIME
#RUN: llvm-xray graph %s -o - -m %S/Inputs/simple-instrmap.yaml -d -e med \
#RUN:    | FileCheck %s -check-prefix=TIME
#RUN: llvm-xray graph %s -o - -m %S/Inputs/simple-instrmap.yaml -d -e 90p \
#RUN:    | FileCheck %s -check-prefix=TIME
#RUN: llvm-xray graph %s -o - -m %S/Inputs/simple-instrmap.yaml -d -e 99p \
#RUN:    | FileCheck %s -check-prefix=TIME
#RUN: llvm-xray graph %s -o - -m %S/Inputs/simple-instrmap.yaml -d -e max \
#RUN:    | FileCheck %s -check-prefix=TIME
#RUN: llvm-xray graph %s -o - -m %S/Inputs/simple-instrmap.yaml -d -e sum \
#RUN:    | FileCheck %s -check-prefix=TIME
#
---
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()
#
# 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().
#
# 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 }
...

#EMPTY:       digraph xray {
#EMPTY-DAG:   F0 -> F1 [label=""];
#EMPTY-DAG:   F1 -> F2 [label=""];
#EMPTY-DAG:   F2 -> F3 [label=""];
#EMPTY-DAG:   F1 [label="@(1)"];
#EMPTY-DAG:   F2 [label="@(2)"];
#EMPTY-DAG:   F3 [label="@(3)"];
#EMPTY-NEXT:       }

#COUNT:       digraph xray {
#COUNT-DAG:   F0 -> F1 [label="1"];
#COUNT-DAG:   F1 -> F2 [label="1"];
#COUNT-DAG:   F2 -> F3 [label="1"];
#COUNT-DAG:   F1 [label="@(1)"];
#COUNT-DAG:   F2 [label="@(2)"];
#COUNT-DAG:   F3 [label="@(3)"];
#COUNT-NEXT:       }


#TIME:       digraph xray {
#TIME-DAG:   F0 -> F1 [label="4.{{.*}}"];
#TIME-DAG:   F1 -> F2 [label="3.{{.*}}"];
#TIME-DAG:   F2 -> F3 [label="1.{{.*}}"];
#TIME-DAG:   F1 [label="@(1)"];
#TIME-DAG:   F2 [label="@(2)"];
#TIME-DAG:   F3 [label="@(3)"];
#TIME-NEXT:       }