On Mon, Feb 10, 2025 at 1:43 PM liuhongt <hongtao....@intel.com> wrote: > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108707#c9 > > >Pranav Gorantla 2025-02-06 04:30:05 UTC > >Facing similar issue in gcc-13. Is it possible to backport the fix of this > >Bug 108707 and Bug 109610 to gcc-13, gcc-12 as well. > > This series is to ask approval for the backport of r14-172 and r14-1252 to > GCC13 and GCC12 release branch. > Note r14-1252 is a fix to r14-172 which regressed powerpc testcase in > PR109610. > I have verified the fix also works on GCC13/GCC12 branch for PR109610. > > Bootstrapped and regtested on x86_64-pc-linux-gnu{-m32,}, and > aarch64-linux-gnu. > Ok for backport > > > liuhongt (3): > Use NO_REGS in cost calculation when the preferred register class are > not known yet. > Only use NO_REGS in cost calculation when !hard_regno_mode_ok for > GENERAL_REGS and mode. > Adjust testcases after better RA decision. > > gcc/ira-costs.cc | 7 + > .../i386/avx2-dest-false-dep-for-glc.c | 28 +- > .../i386/avx512dq-dest-false-dep-for-glc.c | 257 ++++++++++--- > .../i386/avx512f-dest-false-dep-for-glc.c | 348 ++++++++++++++---- > .../i386/avx512fp16-dest-false-dep-for-glc.c | 118 ++++-- > .../i386/avx512vl-dest-false-dep-for-glc.c | 243 +++++++++--- > gcc/testsuite/gcc.target/i386/pr108707.c | 16 + > 7 files changed, 813 insertions(+), 204 deletions(-) > create mode 100644 gcc/testsuite/gcc.target/i386/pr108707.c > > -- > 2.34.1 >
-- BR, Hongtao
