On Linux/x86_64,
bd6079f1a465fad5c9916bcad71c583a69fbd281 is the first bad commit
commit bd6079f1a465fad5c9916bcad71c583a69fbd281
Author: Thomas Koenig <[email protected]>
Date: Sat Oct 24 17:24:42 2026 +0200
LEADZ, POPCNT, POPPAR and TRAILZ for unsigned numbers.
caused
FAIL: gfortran.dg/unsigned_45.f90 -O0 (test for excess errors)
FAIL: gfortran.dg/unsigned_45.f90 -O1 (test for excess errors)
FAIL: gfortran.dg/unsigned_45.f90 -O2 (test for excess errors)
FAIL: gfortran.dg/unsigned_45.f90 -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions (test for excess errors)
FAIL: gfortran.dg/unsigned_45.f90 -O3 -g (test for excess errors)
FAIL: gfortran.dg/unsigned_45.f90 -Os (test for excess errors)
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-5538/usr
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl
--enable-libmpx x86_64-linux --disable-bootstrap
To reproduce:
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=gfortran.dg/unsigned_45.f90 --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=gfortran.dg/unsigned_45.f90 --target_board='unix{-m32\
-march=cascadelake}'"
(Please directly reply to this email for question about this report.)
(If you met problems with cascadelake related, disabling AVX512F in command
line might save that.)
(However, please make sure that there is no potential problems with AVX512.)
