https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106588
Bug ID: 106588
Summary: The constraints on most of the patterns in bitmanip.md
are broken
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, internal-improvement, wrong-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
Target: riscv
Take:
(define_insn "*bseti<mode>"
[(set (match_operand:X 0 "register_operand" "=r")
(ior:X (match_operand:X 1 "register_operand" "r")
(match_operand 2 "single_bit_mask_operand" "i")))]
"TARGET_ZBS"
"bseti\t%0,%1,%S2"
[(set_attr "type" "bitmanip")])
That is if something after reload decides to change operand 2, it will be
accepted and then crash while emitting %S2.
