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| author | Jan Hubicka <hubicka@freesoft.cz> | 1999-11-21 12:40:47 +0000 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 1999-11-21 12:40:47 +0000 |
| commit | ee59f29bd96fdf420a4c9888bf65ce20957989d3 (patch) | |
| tree | 03c42138bb4c64b71ebcc4b15c93df7f7e5b26e6 /gcc/regclass.c | |
| parent | 246fd41f2d73a1ded9b7b1fd5d9c6ea7d5d82a11 (diff) | |
| download | gcc-ee59f29bd96fdf420a4c9888bf65ce20957989d3.zip gcc-ee59f29bd96fdf420a4c9888bf65ce20957989d3.tar.gz gcc-ee59f29bd96fdf420a4c9888bf65ce20957989d3.tar.bz2 | |
regclass.c (may_move_in_cost): Rename from may_move_cost, all references updated.
* regclass.c (may_move_in_cost): Rename from may_move_cost, all
references updated.
(may_move_out_cost): New variable.
(init_reg_sets_1): Initialize may_move_out_cost.
(record_reg_classes): Use may_move_out_cost.
From-SVN: r30601
Diffstat (limited to 'gcc/regclass.c')
| -rw-r--r-- | gcc/regclass.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index f14433c..d0d8e50 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -175,7 +175,12 @@ static int move_cost[N_REG_CLASSES][N_REG_CLASSES]; /* Similar, but here we don't have to move if the first index is a subset of the second so in that case the cost is zero. */ -static int may_move_cost[N_REG_CLASSES][N_REG_CLASSES]; +static int may_move_in_cost[N_REG_CLASSES][N_REG_CLASSES]; + +/* Similar, but here we don't have to move if the first index is a superset + of the second so in that case the cost is zero. */ + +static int may_move_out_cost[N_REG_CLASSES][N_REG_CLASSES]; #ifdef FORBIDDEN_INC_DEC_CLASSES @@ -413,9 +418,14 @@ init_reg_sets_1 () move_cost[i][j] = cost; if (reg_class_subset_p (i, j)) - cost = 0; + may_move_in_cost[i][j] = 0; + else + may_move_in_cost[i][j] = cost; - may_move_cost[i][j] = cost; + if (reg_class_subset_p (j, i)) + may_move_out_cost[i][j] = 0; + else + may_move_out_cost[i][j] = cost; } } @@ -1277,8 +1287,8 @@ record_reg_classes (n_alts, n_ops, ops, modes, subreg_changes_size, for (class = 0; class < N_REG_CLASSES; class++) pp->cost[class] = (recog_data.operand_type[i] == OP_IN - ? may_move_cost[class][(int) classes[i]] - : may_move_cost[(int) classes[i]][class]); + ? may_move_in_cost[class][(int) classes[i]] + : may_move_out_cost[(int) classes[i]][class]); /* If the alternative actually allows memory, make things a bit cheaper since we won't need an extra insn to @@ -1296,7 +1306,7 @@ record_reg_classes (n_alts, n_ops, ops, modes, subreg_changes_size, if (prefclass) alt_cost - += (may_move_cost[(unsigned char) prefclass[REGNO (op)]] + += (may_move_in_cost[(unsigned char) prefclass[REGNO (op)]] [(int) classes[i]]); if (REGNO (ops[i]) != REGNO (ops[j]) @@ -1498,8 +1508,8 @@ record_reg_classes (n_alts, n_ops, ops, modes, subreg_changes_size, for (class = 0; class < N_REG_CLASSES; class++) pp->cost[class] = (recog_data.operand_type[i] == OP_IN - ? may_move_cost[class][(int) classes[i]] - : may_move_cost[(int) classes[i]][class]); + ? may_move_in_cost[class][(int) classes[i]] + : may_move_out_cost[(int) classes[i]][class]); /* If the alternative actually allows memory, make things a bit cheaper since we won't need an extra insn to @@ -1517,7 +1527,7 @@ record_reg_classes (n_alts, n_ops, ops, modes, subreg_changes_size, if (prefclass) alt_cost - += (may_move_cost[(unsigned char) prefclass[REGNO (op)]] + += (may_move_in_cost[(unsigned char) prefclass[REGNO (op)]] [(int) classes[i]]); } } @@ -1835,7 +1845,7 @@ record_address_regs (x, class, scale) pp->mem_cost += (MEMORY_MOVE_COST (Pmode, class, 1) * scale) / 2; for (i = 0; i < N_REG_CLASSES; i++) - pp->cost[i] += (may_move_cost[i][(int) class] * scale) / 2; + pp->cost[i] += (may_move_in_cost[i][(int) class] * scale) / 2; } break; |