On Tue, Aug 22, 2023 at 12:19 AM Fangrui Song <mask...@google.com> wrote: > > On Tue, Aug 1, 2023 at 12:51 PM Fangrui Song <mask...@google.com> wrote: > > > > When using -mcmodel=medium, large data objects larger than the > > -mlarge-data-threshold threshold are placed into large data sections > > (.lrodata, .ldata, .lbss and some variants). GNU ld and ld.lld 17 place > > .l* sections into separate output sections. If small and medium code > > model object files are mixed, the .l* sections won't exert relocation > > overflow pressure on sections in object files built with -mcmodel=small. > > > > However, when using -mcmodel=large, -mlarge-data-threshold doesn't > > apply. This means that the .rodata/.data/.bss sections may exert > > relocation overflow pressure on sections in -mcmodel=small object files. > > > > This patch allows -mcmodel=large to generate .l* sections and drops an > > unneeded documentation restriction that the value must be the same. > > > > Link: https://groups.google.com/g/x86-64-abi/c/jnQdJeabxiU > > ("Large data sections for the large code model") > > > > Signed-off-by: Fangrui Song <mask...@google.com> > > > > --- > > Changes from v1 > > (https://gcc.gnu.org/pipermail/gcc-patches/2023-April/616947.html): > > * Clarify commit message. Add link to > > https://groups.google.com/g/x86-64-abi/c/jnQdJeabxiU > > > > Changes from v2 > > * Drop an uneeded limitation in the documentation. > > > > Changes from v3 > > * Change scan-assembler directives to use \. to match literal . > > --- > > gcc/config/i386/i386.cc | 15 +++++++++------ > > gcc/config/i386/i386.opt | 2 +- > > gcc/doc/invoke.texi | 6 +++--- > > gcc/testsuite/gcc.target/i386/large-data.c | 13 +++++++++++++ > > 4 files changed, 26 insertions(+), 10 deletions(-) > > create mode 100644 gcc/testsuite/gcc.target/i386/large-data.c > > > > [...] > > Ping:)
Ping:) https://gcc.gnu.org/pipermail/gcc-patches/2023-August/625993.html (I don't have write access to gcc.) -- 宋方睿
