| commit | 73c26018ed0ecd9c807bb363cc2c2ab4aca66a82 | |
| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | |
| Wed, 13 Mar 2024 14:34:14 +0000 (13 14:34 +0000) | ||
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | |
| Thu, 14 Mar 2024 14:27:56 +0000 (14 14:27 +0000) | ||
| tree | 3ffed8d805467423965228912339a251bceb7f76 | treesnapshot (tar.gz zip) |
| parent | 2367bf468ce43801de987dcd54b0f99ba9d62827 | commitdiff |
aarch64: fix check for SVE support in assembler
Due to GCC bug 110901 -mcpu can override -march setting when compiling
asm code and thus a compiler targetting a specific cpu can fail the
configure check even when binutils gas supports SVE.
The workaround is that explicit .arch directive overrides both -mcpu
and -march, and since that's what the actual SVE memcpy uses the
configure check should use that too even if the GCC issue is fixed
independently.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Due to GCC bug 110901 -mcpu can override -march setting when compiling
asm code and thus a compiler targetting a specific cpu can fail the
configure check even when binutils gas supports SVE.
The workaround is that explicit .arch directive overrides both -mcpu
and -march, and since that's what the actual SVE memcpy uses the
configure check should use that too even if the GCC issue is fixed
independently.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
| sysdeps/aarch64/configure | [changed mode: 0644->0755] | diffblobblamehistory |
| sysdeps/aarch64/configure.ac | diffblobblamehistory |