diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.c | 19 |
2 files changed, 17 insertions, 7 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4809963..72e5144 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-01-08 Richard Henderson <rth@redhat.com> + + * config/alpha/alpha.c (alpha_split_conditional_move): Call copy_rtx + as needed to avoid shared structure. + 2002-01-08 Kazu Hirata <kazu@hxi.com> * config/h8300/h8300.c (get_shift_alg): Fix 15-bit LSHIFTRT on diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c index b928609..8790e7d 100644 --- a/gcc/config/alpha/alpha.c +++ b/gcc/config/alpha/alpha.c @@ -3166,6 +3166,9 @@ alpha_split_conditional_move (code, dest, cond, t_rtx, f_rtx) else subtarget = target; } + /* Below, we must be careful to use copy_rtx on target and subtarget + in intermediate insns, as they may be a subreg rtx, which may not + be shared. */ if (f == 0 && exact_log2 (diff) > 0 /* On EV6, we've got enough shifters to make non-arithmatic shifts @@ -3174,33 +3177,35 @@ alpha_split_conditional_move (code, dest, cond, t_rtx, f_rtx) && (diff <= 8 || alpha_cpu == PROCESSOR_EV6)) { tmp = gen_rtx_fmt_ee (code, DImode, cond, const0_rtx); - emit_insn (gen_rtx_SET (VOIDmode, subtarget, tmp)); + emit_insn (gen_rtx_SET (VOIDmode, copy_rtx (subtarget), tmp)); - tmp = gen_rtx_ASHIFT (DImode, subtarget, GEN_INT (exact_log2 (t))); + tmp = gen_rtx_ASHIFT (DImode, copy_rtx (subtarget), + GEN_INT (exact_log2 (t))); emit_insn (gen_rtx_SET (VOIDmode, target, tmp)); } else if (f == 0 && t == -1) { tmp = gen_rtx_fmt_ee (code, DImode, cond, const0_rtx); - emit_insn (gen_rtx_SET (VOIDmode, subtarget, tmp)); + emit_insn (gen_rtx_SET (VOIDmode, copy_rtx (subtarget), tmp)); - emit_insn (gen_negdi2 (target, subtarget)); + emit_insn (gen_negdi2 (target, copy_rtx (subtarget))); } else if (diff == 1 || diff == 4 || diff == 8) { rtx add_op; tmp = gen_rtx_fmt_ee (code, DImode, cond, const0_rtx); - emit_insn (gen_rtx_SET (VOIDmode, subtarget, tmp)); + emit_insn (gen_rtx_SET (VOIDmode, copy_rtx (subtarget), tmp)); if (diff == 1) - emit_insn (gen_adddi3 (target, subtarget, GEN_INT (f))); + emit_insn (gen_adddi3 (target, copy_rtx (subtarget), GEN_INT (f))); else { add_op = GEN_INT (f); if (sext_add_operand (add_op, mode)) { - tmp = gen_rtx_MULT (DImode, subtarget, GEN_INT (diff)); + tmp = gen_rtx_MULT (DImode, copy_rtx (subtarget), + GEN_INT (diff)); tmp = gen_rtx_PLUS (DImode, tmp, add_op); emit_insn (gen_rtx_SET (VOIDmode, target, tmp)); } |