diff options
Diffstat (limited to 'lib/compiler/src/beam_utils.erl')
| -rw-r--r-- | lib/compiler/src/beam_utils.erl | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/compiler/src/beam_utils.erl b/lib/compiler/src/beam_utils.erl index ff587c4982..5580d2f123 100644 --- a/lib/compiler/src/beam_utils.erl +++ b/lib/compiler/src/beam_utils.erl @@ -355,6 +355,9 @@ split_even(Rs) -> split_even(Rs, [], []). %% exit BIF will raise an exception %% used - Reg is used +check_liveness({fr,_}, _, St) -> + %% Conservatively always consider the floating point register used. + {used,St}; check_liveness(R, [{block,Blk}|Is], St0) -> case check_liveness_block(R, Blk, St0) of {transparent,St1} -> @@ -1161,7 +1164,7 @@ defs([{loop_rec,{f,L},{x,0}}=I|Is], _Regs, D0) -> D = update_regs(L, RegsAtLabel, D0), [I|defs(Is, init_def_regs(1), D)]; defs([{loop_rec_end,_}=I|Is], _Regs, D) -> - [I|defs(Is, 0, D)]; + [I|defs_unreachable(Is, D)]; defs([{make_fun2,_,_,_,_}=I|Is], _Regs, D) -> [I|defs(Is, 1, D)]; defs([{move,_,Dst}=I|Is], Regs0, D) -> |