diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 6bdb3f4..8e78e18 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -885,6 +885,12 @@ combine_validate_cost (rtx_insn *i0, rtx_insn *i1, rtx_insn *i2, rtx_insn *i3, i1_cost = i0_cost = 0; } + /* If we have split a PARALLEL I2 to I1,I2, we have counted its cost twice; + correct that. */ + if (old_cost && i1 && INSN_UID (i1) == INSN_UID (i2)) + old_cost -= i1_cost; + + /* Calculate the replacement insn_rtx_costs. */ new_i3_cost = insn_rtx_cost (newpat, optimize_this_for_speed_p); if (newi2pat) @@ -924,14 +930,14 @@ combine_validate_cost (rtx_insn *i0, rtx_insn *i1, rtx_insn *i2, rtx_insn *i3, reject ? "rejecting" : "allowing"); if (i0) fprintf (dump_file, "%d, ", INSN_UID (i0)); - if (i1) + if (i1 && INSN_UID (i1) != INSN_UID (i2)) fprintf (dump_file, "%d, ", INSN_UID (i1)); fprintf (dump_file, "%d and %d\n", INSN_UID (i2), INSN_UID (i3)); fprintf (dump_file, "original costs "); if (i0) fprintf (dump_file, "%d + ", i0_cost); - if (i1) + if (i1 && INSN_UID (i1) != INSN_UID (i2)) fprintf (dump_file, "%d + ", i1_cost); fprintf (dump_file, "%d + %d = %d\n", i2_cost, i3_cost, old_cost); |