compiler C++ compile times: Clang (bcc32c) vs. Borland (bcc32)

[Michaell 3]

I'm currently using C++ Builder Athens 12.2 and switched from bcc32 to bcc32c. Following my finding regarding the huge compile time differences. All values are rounded (max. +/- 3 s) and measured several times.

CPU Ryzen 5 5600X:

1. bcc32: 25 s, 1 CPU thread
2. bcc32c: around 40 minutes, 1 CPU thread
3. bcc32c: 170 s, 12 CPU threads

Due to this bad result I upgraded my CPU.

CPU Ryzen 9 5950X:

1. bcc32: not measured
2. bcc32c: 120 s, 12 CPU threads
3. bcc32c: 80 s, 32 CPU threads

May be these information may help other users in view of compiler switch and or CPU switch.

 

Greetings!

Michaell

Edited July 30 by Michaell
1 value more exact documented

[Lachlan Gemmell 33]

I don't use the Clang compiler but I do remember that Athens 12.3 was supposed to give it a decent speed boost. Might be worth you upgrading from 12.2 when you have some time.

[Michaell 3]

Thanks, I'm aware of the may be present performance gain of release 12.3. In case it is also for the not 64 bit compiler = bcc32c I will update this thread.

[Roger Cigol 134]

Are you using TwineCompile ? - for the 32 bit clang compiler this additional plug in (available FOC on getit) is virtually essential.