[r16-3760 Regression] FAIL: g++.target/i386/pr116896-1.C -std=gnu++23 scan-assembler-times \tjp\t 1 on Linux/x86_64

"Jiang, Haochen" <[email protected]>
Newsgroups gmane.comp.gcc.patches,gmane.comp.gcc.regression
Message-ID <SJ5PPF77D28E3C25F1B4671FFA895396328EC08A@SJ5PPF77D28E3C2.namprd11.prod.outlook.com>
On Linux/x86_64,

9ff5cadac4579fe714dc8de3a39eaef8534c64f7 is the first bad commit
commit 9ff5cadac4579fe714dc8de3a39eaef8534c64f7
Author: Robin Dapp <[email protected]>
Date:   Tue Sep 9 16:15:48 2025 +0200

    ifcvt: Clarify if_info.original_cost.

caused

FAIL: gcc.target/i386/pr116896.c scan-assembler-times \tjp\t 2
FAIL: g++.target/i386/pr116896-1.C  -std=gnu++20  scan-assembler-times \tjp\t 1
FAIL: g++.target/i386/pr116896-1.C  -std=gnu++23  scan-assembler-times \tjp\t 1
FAIL: g++.target/i386/pr116896-1.C  -std=gnu++26  scan-assembler-times \tjp\t 1

with GCC configured with

../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-3760/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/pr116896.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=gcc.target/i386/pr116896.c --target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=g++.target/i386/pr116896-1.C --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="i386.exp=g++.target/i386/pr116896-1.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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