On Linux/x86_64,

c19aedfc0c3531e2c2b7c92e7b062be29ecbf0f8 is the first bad commit
commit c19aedfc0c3531e2c2b7c92e7b062be29ecbf0f8
Author: Richard Biener <[email protected]>
Date:   Fri Oct 24 12:31:54 2025 +0200

    tree-optimization/120687 - legitimise some permutes before optimizing

caused

FAIL: gcc.dg/tree-ssa/pr92834.c scan-tree-dump-times optimized "MAX_EXPR <" 8
FAIL: gcc.dg/tree-ssa/pr92834.c scan-tree-dump-times optimized "MIN_EXPR <" 8

with GCC configured with

../../gcc/configure 
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-4726/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="tree-ssa.exp=gcc.dg/tree-ssa/pr92834.c --target_board='unix{-m32\ 
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/pr92834.c --target_board='unix{-m64\ 
-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.)

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