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[Bug middle-end/51446] -fno-trapping-math generates NaN constant with different sign
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 08 Dec 2011 18:59:12 +0000
- Subject: [Bug middle-end/51446] -fno-trapping-math generates NaN constant with different sign
- Auto-submitted: auto-generated
- References: <bug-51446-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51446
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-08 18:59:12 UTC ---
find libgcc/config -name sfp-machine.h | xargs grep NANSIGN
shows we already track it for a banch of targets, just in libgcc soft-fp
configuration and not in the compiler itself. Not sure how accurrate it is on
all targets, but i?86/x86_64/ia64 use negative qNaNs, others positive.