On Linux/x86_64,
e148a21f38327f7c0e1040bf28c676dd0d13ca38 is the first bad commit
commit e148a21f38327f7c0e1040bf28c676dd0d13ca38
Author: Andrew Pinski <[email protected]>
Date: Thu Oct 23 21:20:24 2025 -0700
x86/aarch64: Fix compile time hog with ccmp [PR99782]
caused
FAIL: gcc.dg/torture/pr99782-1.c -O0 (test for excess errors)
FAIL: gcc.dg/torture/pr99782-1.c -O1 (test for excess errors)
FAIL: gcc.dg/torture/pr99782-1.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none (test for excess errors)
FAIL: gcc.dg/torture/pr99782-1.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects (test for excess errors)
FAIL: gcc.dg/torture/pr99782-1.c -O2 (test for excess errors)
FAIL: gcc.dg/torture/pr99782-1.c -O3 -fomit-frame-pointer -funroll-loops
-fpeel-loops -ftracer -finline-functions (test for excess errors)
FAIL: gcc.dg/torture/pr99782-1.c -O3 -g (test for excess errors)
FAIL: gcc.dg/torture/pr99782-1.c -Os (test for excess errors)
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-5897/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-torture.exp=gcc.dg/torture/pr99782-1.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg-torture.exp=gcc.dg/torture/pr99782-1.c
--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.)
