Committed
On Fri, Dec 3, 2021 at 11:51 PM Kito Cheng <kito.ch...@sifive.com> wrote: > > RISC-V spec only allow alphabetical name for extension before, however > vector extension add several extension named with digits, so we try to > extend the naming rule. > > Ref: > https://github.com/riscv/riscv-isa-manual/pull/718 > > gcc/ChangeLog: > > * common/config/riscv/riscv-common.c > (riscv_subset_list::parse_multiletter_ext): Allow ext. name has > digit. > --- > gcc/common/config/riscv/riscv-common.c | 42 +++++++++++++++++++++++--- > 1 file changed, 38 insertions(+), 4 deletions(-) > > diff --git a/gcc/common/config/riscv/riscv-common.c > b/gcc/common/config/riscv/riscv-common.c > index b8dd0aeac3e..31b1c833965 100644 > --- a/gcc/common/config/riscv/riscv-common.c > +++ b/gcc/common/config/riscv/riscv-common.c > @@ -760,24 +760,58 @@ riscv_subset_list::parse_multiletter_ext (const char *p, > bool explicit_version_p = false; > char *ext; > char backup; > + size_t len; > + size_t end_of_version_pos, i; > + bool found_any_number = false; > + bool found_minor_version = false; > > - while (*++q != '\0' && *q != '_' && !ISDIGIT (*q)) > + /* Parse until end of this extension including version number. */ > + while (*++q != '\0' && *q != '_') > ; > > backup = *q; > *q = '\0'; > - ext = xstrdup (subset); > + len = q - subset; > *q = backup; > > + end_of_version_pos = len; > + /* Find the begin of version string. */ > + for (i = len -1; i > 0; --i) > + { > + if (ISDIGIT (subset[i])) > + { > + found_any_number = true; > + continue; > + } > + /* Might be version seperator, but need to check one more char, > + we only allow <major>p<minor>, so we could stop parsing if found > + any more `p`. */ > + if (subset[i] == 'p' && > + !found_minor_version && > + found_any_number && ISDIGIT (subset[i-1])) > + { > + found_minor_version = true; > + continue; > + } > + > + end_of_version_pos = i + 1; > + break; > + } > + > + backup = subset[end_of_version_pos]; > + subset[end_of_version_pos] = '\0'; > + ext = xstrdup (subset); > + subset[end_of_version_pos] = backup; > + > end_of_version > - = parsing_subset_version (ext, q, &major_version, &minor_version, > + = parsing_subset_version (ext, subset + end_of_version_pos, > &major_version, &minor_version, > /* std_ext_p= */ false, > &explicit_version_p); > free (ext); > > if (end_of_version == NULL) > return NULL; > > - *q = '\0'; > + subset[end_of_version_pos] = '\0'; > > if (strlen (subset) == 1) > { > -- > 2.34.0 >
