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| author | David Edelsohn <edelsohn@mhpcc.edu> | 1998-10-23 20:51:02 +0000 |
|---|---|---|
| committer | David Edelsohn <dje@gcc.gnu.org> | 1998-10-23 16:51:02 -0400 |
| commit | 8c368ee2188b8630efeab672d3bb9f2bfc61e922 (patch) | |
| tree | 836799cb66662b6b74c81c8f75e3d8c1b3e41ce2 /gcc/regclass.c | |
| parent | b590bbfd110bc151f231c3a1ea80200f2b0bb60b (diff) | |
| download | gcc-8c368ee2188b8630efeab672d3bb9f2bfc61e922.zip gcc-8c368ee2188b8630efeab672d3bb9f2bfc61e922.tar.gz gcc-8c368ee2188b8630efeab672d3bb9f2bfc61e922.tar.bz2 | |
loop.c (loop_has_tablejump): New variable.
* loop.c (loop_has_tablejump): New variable.
(prescan_loop): Scan for it.
(insert_bct): Replace explicit scan with use of it.
* regclass.c (regclass): Restore loop variable j.
(record_reg_classes): Deterine op_types modifiers and initialize
classes[i] before matching constraints. Handle matching
constraints 5-9.
From-SVN: r23263
Diffstat (limited to 'gcc/regclass.c')
| -rw-r--r-- | gcc/regclass.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index 75d7302..8d873f9 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -998,6 +998,7 @@ regclass (f, nregs) { rtx r = gen_rtx_REG (VOIDmode, 0); enum machine_mode m; + register int j; for (j = 0; j < FIRST_PSEUDO_REGISTER; j++) if (TEST_HARD_REG_BIT (reg_class_contents[i], j)) @@ -1210,8 +1211,19 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn) continue; } - if (*p == '%') - p++; + /* Ascertain modifiers for line and skip any modifiers that might + occur before first constraint. */ + while (*p == '%' || *p == '=' || *p == '+' || *p == '&') + { + if (*p == '=') + op_types[i] = OP_WRITE; + else if (*p == '+') + op_types[i] = OP_READ_WRITE; + + p++; + } + + classes[i] = NO_REGS; /* If this alternative is only relevant when this operand matches a previous operand, we do different things depending @@ -1281,18 +1293,9 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn) any of the constraints. Collect the valid register classes and see if this operand accepts memory. */ - classes[i] = NO_REGS; while (*p && (c = *p++) != ',') switch (c) { - case '=': - op_types[i] = OP_WRITE; - break; - - case '+': - op_types[i] = OP_READ_WRITE; - break; - case '*': /* Ignore the next letter for this pass. */ p++; @@ -1300,10 +1303,9 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn) case '?': alt_cost += 2; - case '%': - case '!': case '#': - case '&': + case '!': case '#': case '&': case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': case 'p': break; |