[r16-6727 Regression] FAIL: gcc.dg/store_merging_19.c scan-tree-dump-times store-merging "Merging successful" 3 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, 50df2b188450457580b5ff4ac1d524fcc74de9bc is the first bad commit commit 50df2b188450457580b5ff4ac1d524fcc74de9bc Author: Andrew Pinski <[email protected]> Date: Sat Jan 10 23:17:12 2026 -0800 match: Simplify `(T1)(a bit_op (T2)b)` to `((T1)a bit_op b)` When b is T1 type and truncating from T2 [PR122845] caused FAIL: gcc.dg/store_merging_19.c scan-tree-dump-times store-merging "Merging successful" 3 with GCC configured with ../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-6727/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.exp=gcc.dg/store_merging_19.c --target_board='unix{-m32}'" $ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/store_merging_19.c --target_board='unix{-m32\ -march=cascadelake}'" $ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/store_merging_19.c --target_board='unix{-m64}'" $ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/store_merging_19.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.)