https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116391
Bug ID: 116391
Summary: Emit spellcheck suggestions for __arm_rsr and
__arm_wsr intrinsics
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: enhancement
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: ktkachov at gcc dot gnu.org
Target Milestone: ---
Target: aarch64
GCC 14 added intrinsics to read and write to sysregs, allowing the user to
avoid inline assembly. It also has validation code to ensure the user passes a
legit register.
One way this can be made even more user-friendly is to use the spell-check
infrastructure to add hints when the user passes an invalid sysreg name. We
already do this for -mcpu/march options and we could do the same here.
We could get aarch64.cc::aarch64_init_sysregs to initialise a vector of
candidates as well, maybe multiple such vectors split by whether a reg is
read/write.
Then we could utilise the candidates_list_and_hint API to get a recommendation
for a misspelled register.
