[Bug target/99184] [avr] wrong double to 16-Bit and 32-Bit integers in libgcc/libf7
cvs-commit at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Sep 19 07:52:48 GMT 2022
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99184
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:175d6ba5f025c886f7f81bc8f9b24717da978933
commit r11-10263-g175d6ba5f025c886f7f81bc8f9b24717da978933
Author: Georg-Johann Lay <avr@gjlay.de>
Date: Mon Sep 19 09:46:58 2022 +0200
Fix PR target/99184: Wrong cast from double to 16-bit and 32-bit ints
this patch fixed PR target/99184 which incorrectly rounded during 64-bit
(long) double to 16-bit and 32-bit integers.
The patch just removes the respective roundings from
libf7-asm.sx::to_integer and ::to_unsigned. Luckily, LibF7 does nowhere
use respective functions internally, the only user is in libf7.c::f7_exp
which reads
f7_round (qq, qq);
int16_t q = f7_get_s16 (qq);
so that f7_get_s16() operates on an already rounded value, and therefore
this code works unaltered with or without rounding in to_integer.
PR target/99184
libgcc/config/avr/libf7/
* libf7-asm.sx (to_integer, to_unsigned): Don't round 16-bit
and 32-bit integers.
(cherry picked from commit 0b5b8ac5cb7fe92dd17ae8bd7de84640daa59e84)
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