On 8/7/25 18:38, Andrew Pinski (QUIC) via Gcc wrote:
So looking into https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121448, I Noticed the options needed to hit this is `-fsignaling-nans -ffinite-math-only`. These 2 options seems contradictory. Should -ffinite-math-only turn off signaling nans? Give a warning or something else?
The original intent (around the early 00's) was for -finite-math-only to indicate that the programmer of the code was certain that valid execution of said code could only produce finite floating point numbers.
So this combination of options indeed makes no sense, because NaNs are "non-finite" floating point bit patterns.
Kind regards, -- Toon Moene - e-mail: t...@moene.org - phone: +31 346 214290 Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
