| commit | 4658366d95d5e398baad956225cc4ba339d5b037 | |
| author | Eli Friedman <efriedma@quicinc.com> | |
| Mon, 5 Sep 2022 19:59:39 +0000 (5 12:59 -0700) | ||
| committer | Eli Friedman <efriedma@quicinc.com> | |
| Mon, 5 Sep 2022 19:59:39 +0000 (5 12:59 -0700) | ||
| tree | 1823be59422dc3e0beb9240dd2bd0544a76253f2 | treesnapshot (tar.gz zip) |
| parent | 63335afb4ebaabc1f983b1f1dbb07816ef4f288f | commitdiff |
[ARM64EC 3/?] Mark reserved registers specific to ARM64EC ABI.
Part of patchset to add initial support for ARM64EC.
I'm not completely sure I understand the reason for this restriction,
but Microsoft documentation says that asynchronous signals clobber these
registers, so we can't ever use them.
As far as I know, none of these registers have any hardcoded meaning, so
reserving them shouldn't have any significant side-effects.
Differental Revision: https://reviews.llvm.org/D125413
Part of patchset to add initial support for ARM64EC.
I'm not completely sure I understand the reason for this restriction,
but Microsoft documentation says that asynchronous signals clobber these
registers, so we can't ever use them.
As far as I know, none of these registers have any hardcoded meaning, so
reserving them shouldn't have any significant side-effects.
Differental Revision: https://reviews.llvm.org/D125413