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TheRock/compiler/amd-llvm/llvm/test/tools/llvm-xray/X86/account-recursive-calls-only-tail-call-deduction.yaml
derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

47 lines
2.2 KiB
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