# RUN: llvm-xray account -d %s -o - -m %S/Inputs/simple-instrmap.yaml | FileCheck --check-prefixes=ALL %s # RUN: llvm-xray account -d -recursive-calls-only %s -o - -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 :0:0: @(1) # ALL-NEXT: 2 2 [ 1.000000, 3.000000, 3.000000, 3.000000, 3.000000] 4.000000 :0:0: @(2) # ALL-NEXT: 3 1 [ 1.000000, 1.000000, 1.000000, 1.000000, 1.000000] 1.000000 :0:0: @(3) # RECURSIVE: Functions with latencies: 0 # RECURSIVE-NEXT: funcid count [ min, med, 90p, 99p, max] sum function