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From: Konstantin Shegunov <kshegunov@gmail.com>
Date: Thu, 26 Sep 2019 17:38:00 -0000
Message-ID: <CAAz9bHsZ_DbrqkoS-1W2xmRS4gMLkJONMeoU_J3xwCERERiTuQ@mail.gmail.com>
Subject: Re: Odd optimizer behavior with FP arithmetic
To: Alexander Monakov <amonakov@ispras.ru>
Cc: gcc-help@gcc.gnu.org
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On Thu, Sep 26, 2019 at 8:11 PM Alexander Monakov <amonakov@ispras.ru>
wrote:

> The 'add' function is inlined into main, and floating-point operations that
> would compute result.c are eliminated as dead code because result.c is
> never
> used.
>
> (and because the compiler doesn't attempt to preserve floating-point
> exceptions
> that those eliminated instructions might raise)

...

In this case inlining does not happen due to flags being different between
> 'main' and 'add'.
>
> In the first case inlining also does not happen for the same reason.
>

Well, ain't I a dummy.

Thanks a lot!
Konstantin.