diff options
Diffstat (limited to 'gcc/lra-constraints.c')
| -rw-r--r-- | gcc/lra-constraints.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c index 213e408..053a65a 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -3493,6 +3493,13 @@ simple_move_p (void) lra_assert (curr_insn_set != NULL_RTX); dest = SET_DEST (curr_insn_set); src = SET_SRC (curr_insn_set); + + /* If the instruction has multiple sets we need to process it even if it + is single_set. This can happen if one or more of the SETs are dead. + See PR73650. */ + if (multiple_sets (curr_insn)) + return false; + return ((dclass = get_op_class (dest)) != NO_REGS && (sclass = get_op_class (src)) != NO_REGS /* The backend guarantees that register moves of cost 2 |