On Linux/x86_64,
44c89620f7390687a01045228d263845e6e311aa is the first bad commit
commit 44c89620f7390687a01045228d263845e6e311aa
Author: Andrea Pinski <[email protected]>
Date: Sat Aug 29 11:46:17 2026 -0700
phiopt: Fix factor/merging out of calls [PR126977]
caused
FAIL: gcc.target/i386/pr113609-1.c scan-assembler-times [ \\t]+je 1
FAIL: gcc.target/i386/pr113609-1.c scan-assembler-times [ \\t]+jne 1
FAIL: gcc.target/i386/pr113609-2.c scan-assembler-times [ \\t]+jne 4
FAIL: gcc.target/i386/pr113609-2.c scan-assembler-times [ \\t]+sete 8
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-3822/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="i386.exp=gcc.target/i386/pr113609-1.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr113609-1.c --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr113609-2.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="i386.exp=gcc.target/i386/pr113609-2.c --target_board='unix{-m32\
-march=cascadelake}'"
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(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.)