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| author | Richard Stallman <rms@gnu.org> | 1993-10-05 03:07:03 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1993-10-05 03:07:03 +0000 |
| commit | a8683de70b540a7b40dedf4222677226a5c52b48 (patch) | |
| tree | e9cff5b8637c03b0120850ed11fdf32734c47533 /gcc/regclass.c | |
| parent | 69249c1b8e4513bc67b14f1e8fe70d50f85c3c75 (diff) | |
| download | gcc-a8683de70b540a7b40dedf4222677226a5c52b48.tar.gz | |
(record_reg_classes): There is no alt_cost
for a pair of matching args if they are the same pseudo reg.
From-SVN: r5597
Diffstat (limited to 'gcc/regclass.c')
| -rw-r--r-- | gcc/regclass.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index be78332546e..20b0b8a9824 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -998,8 +998,10 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn) instruction. */ this_op_costs[i] = this_op_costs[j]; - if (! find_reg_note (insn, REG_DEAD, op)) - alt_cost += 2; + if (! (GET_CODE (op) == REG && rtx_equal_p (op, ops[j]))) + /* No cost if both are the same pseudo reg. */ + if (! find_reg_note (insn, REG_DEAD, op)) + alt_cost += 2; /* This is in place of ordinary cost computation for this operand, so skip to the end of the |