[r17-3443 Regression] FAIL: gcc.target/i386/widen_mult_high_chain.c scan-assembler-times \tmulq 4 on Linux/x86_64
Haochen Jiang via Gcc-regression <[email protected]>
| Newsgroups | gmane.comp.gcc.regression,gmane.comp.gcc.patches |
|---|---|
| Message-ID | <[email protected]> |
On Linux/x86_64, aac02c9666184d19334a0527ec444b5e55fbd113 is the first bad commit commit aac02c9666184d19334a0527ec444b5e55fbd113 Author: Konstantinos Eleftheriou <[email protected]> Date: Thu Jul 9 02:22:54 2026 -0700 widening_mul: Lower long-multiply chains to inline longhand caused FAIL: gcc.target/i386/widen_mult_high_chain.c scan-assembler-times \tmulq 4 with GCC configured with ../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-3443/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/widen_mult_high_chain.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.)