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| author | Ulrich Weigand <uweigand@de.ibm.com> | 2002-08-14 10:04:51 +0000 |
|---|---|---|
| committer | Ulrich Weigand <uweigand@gcc.gnu.org> | 2002-08-14 10:04:51 +0000 |
| commit | ccfc6cc8fa5ab66c0e2dede177aa5b1010523ffc (patch) | |
| tree | f8955f2da7788407bd35a092c0a414ccd029de11 /gcc/regclass.c | |
| parent | 72c41e5adc70750cee23e185d6cbadb3950a5b2d (diff) | |
| download | gcc-ccfc6cc8fa5ab66c0e2dede177aa5b1010523ffc.zip gcc-ccfc6cc8fa5ab66c0e2dede177aa5b1010523ffc.tar.gz gcc-ccfc6cc8fa5ab66c0e2dede177aa5b1010523ffc.tar.bz2 | |
reload.c (find_reloads): Handle constraint letters marked by EXTRA_ADDRESS_CONSTRAINT and...
* reload.c (find_reloads): Handle constraint letters marked by
EXTRA_ADDRESS_CONSTRAINT and EXTRA_MEMORY_CONSTRAINT.
(alternative_allows_memconst): Likewise.
* reload1.c (maybe_fix_stack_asms): Likewise.
* recog.c (asm_operand_ok, preprocess_constraints,
constrain_operands): Likewise.
* regclass.c (record_operand_costs, record_reg_classes): Likewise.
* local-alloc.c (block_alloc, requires_inout): Likewise.
* stmt.c (parse_output_constraint, parse_input_constraint): Likewise.
* defaults.h (EXTRA_MEMORY_CONSTRAINT): Provide a default.
(EXTRA_ADDRESS_CONSTRAINT): Likewise.
* doc/tm.texi: Document these two new target macros.
* config/s390/s390.c (s390_expand_plus_operand): Accept already
valid operands.
(q_constraint): New function.
config/s390/s390-protos.h (q_constraint): Declare it.
config/s390/s390.h (EXTRA_CONSTRAINT): Use it.
(EXTRA_MEMORY_CONSTRAINT): New macro.
* config/s390/s390.md: Throughout the machine description,
replace all instances of the constraint combinations 'Qo'
or 'oQ' with simply 'Q'.
From-SVN: r56291
Diffstat (limited to 'gcc/regclass.c')
| -rw-r--r-- | gcc/regclass.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/gcc/regclass.c b/gcc/regclass.c index 1451f8a..75335b1 100644 --- a/gcc/regclass.c +++ b/gcc/regclass.c @@ -1007,7 +1007,8 @@ record_operand_costs (insn, op_costs, reg_pref) if (GET_CODE (recog_data.operand[i]) == MEM) record_address_regs (XEXP (recog_data.operand[i], 0), MODE_BASE_REG_CLASS (modes[i]), frequency * 2); - else if (constraints[i][0] == 'p') + else if (constraints[i][0] == 'p' + || EXTRA_ADDRESS_CONSTRAINT (constraints[i][0])) record_address_regs (recog_data.operand[i], MODE_BASE_REG_CLASS (modes[i]), frequency * 2); } @@ -1709,6 +1710,27 @@ record_reg_classes (n_alts, n_ops, ops, modes, #ifdef EXTRA_CONSTRAINT else if (EXTRA_CONSTRAINT (op, c)) win = 1; + + if (EXTRA_MEMORY_CONSTRAINT (c)) + { + /* Every MEM can be reloaded to fit. */ + allows_mem[i] = 1; + if (GET_CODE (op) == MEM) + win = 1; + } + if (EXTRA_ADDRESS_CONSTRAINT (op)) + { + /* Every address can be reloaded to fit. */ + allows_addr = 1; + if (address_operand (op, GET_MODE (op))) + win = 1; + /* We know this operand is an address, so we want it to be + allocated to a register that can be the base of an + address, ie BASE_REG_CLASS. */ + classes[i] + = reg_class_subunion[(int) classes[i]] + [(int) MODE_BASE_REG_CLASS (VOIDmode)]; + } #endif break; } |