C:\test>cl /Ox calloverhead.c
Microsoft (R) C/C++ Optimizing Compiler Version 15.00.21022.08 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

calloverhead.c
Microsoft (R) Incremental Linker Version 9.00.21022.08
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:calloverhead.exe
calloverhead.obj

C:\test>calloverhead 10000000
Inline condition:      60,068,106
Inbody condition:      45,064,458

C:\test>calloverhead 10000000
Inline condition:      60,037,515
Inbody condition:      45,084,879

C:\test>calloverhead 10000000
Inline condition:      60,048,828
Inbody condition:      45,057,681

C:\test>calloverhead 10000000
Inline condition:      60,032,691
Inbody condition:      45,032,724