diff options
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/gcc/expmed.c b/gcc/expmed.c index 75427e1..b44ba65 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -2547,13 +2547,12 @@ expand_mult_const (enum machine_mode mode, rtx op0, HOST_WIDE_INT val, for (opno = 1; opno < alg->ops; opno++) { int log = alg->log[opno]; - int preserve = preserve_subexpressions_p (); - rtx shift_subtarget = preserve ? 0 : accum; + rtx shift_subtarget = optimize ? 0 : accum; rtx add_target = (opno == alg->ops - 1 && target != 0 && variant != add_variant - && ! preserve) + && !optimize) ? target : 0; - rtx accum_target = preserve ? 0 : accum; + rtx accum_target = optimize ? 0 : accum; switch (alg->op[opno]) { @@ -2615,8 +2614,8 @@ expand_mult_const (enum machine_mode mode, rtx op0, HOST_WIDE_INT val, build_int_cst (NULL_TREE, log, 0), NULL_RTX, 0); accum = force_operand (gen_rtx_MINUS (mode, tem, accum), - (add_target ? add_target - : preserve ? 0 : tem)); + (add_target + ? add_target : (optimize ? 0 : tem))); val_so_far = (val_so_far << log) - val_so_far; break; @@ -4829,8 +4828,7 @@ emit_store_flag (rtx target, enum rtx_code code, rtx op0, rtx op1, compare_mode = insn_data[(int) icode].operand[0].mode; subtarget = target; pred = insn_data[(int) icode].operand[0].predicate; - if (preserve_subexpressions_p () - || ! (*pred) (subtarget, compare_mode)) + if (optimize || ! (*pred) (subtarget, compare_mode)) subtarget = gen_reg_rtx (compare_mode); pattern = GEN_FCN (icode) (subtarget); @@ -4863,7 +4861,7 @@ emit_store_flag (rtx target, enum rtx_code code, rtx op0, rtx op1, /* If we want to keep subexpressions around, don't reuse our last target. */ - if (preserve_subexpressions_p ()) + if (optimize) subtarget = 0; /* Now normalize to the proper value in COMPARE_MODE. Sometimes @@ -4908,10 +4906,10 @@ emit_store_flag (rtx target, enum rtx_code code, rtx op0, rtx op1, delete_insns_since (last); - /* If expensive optimizations, use different pseudo registers for each - insn, instead of reusing the same pseudo. This leads to better CSE, - but slows down the compiler, since there are more pseudos */ - subtarget = (!flag_expensive_optimizations + /* If optimizing, use different pseudo registers for each insn, instead + of reusing the same pseudo. This leads to better CSE, but slows + down the compiler, since there are more pseudos */ + subtarget = (!optimize && (target_mode == mode)) ? target : NULL_RTX; /* If we reached here, we can't do this with a scc insn. However, there |