diff options
author | Bob Wilson <bob.wilson@acm.org> | 2007-02-02 23:09:50 +0000 |
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committer | Bob Wilson <bob.wilson@acm.org> | 2007-02-02 23:09:50 +0000 |
commit | 61376837da3f7dab95ae8c63391af67f281c9144 (patch) | |
tree | b16a89e591c1627f04f0c60877a2739cdb48d5b9 /gas/config/xtensa-relax.c | |
parent | 95a98c01179050562eea90303c44e9904e022184 (diff) | |
download | fsf-binutils-gdb-61376837da3f7dab95ae8c63391af67f281c9144.zip fsf-binutils-gdb-61376837da3f7dab95ae8c63391af67f281c9144.tar.gz fsf-binutils-gdb-61376837da3f7dab95ae8c63391af67f281c9144.tar.bz2 |
* config/xtensa-relax.h (struct build_instr): Delete id field.
* config/xtensa-relax.c (widen_spec_list): Remove zeros from LITERAL
and LABEL tokens.
(append_literal_op, append_label_op): Remove litnum/labnum arguments;
set op_data fields to zero.
(parse_id_constant): Delete.
(build_transition): Remove code to handle numbered literals and labels.
Diffstat (limited to 'gas/config/xtensa-relax.c')
-rw-r--r-- | gas/config/xtensa-relax.c | 194 |
1 files changed, 70 insertions, 124 deletions
diff --git a/gas/config/xtensa-relax.c b/gas/config/xtensa-relax.c index e5659710..09c29ad 100644 --- a/gas/config/xtensa-relax.c +++ b/gas/config/xtensa-relax.c @@ -49,8 +49,8 @@ The replacement language INSN_REPL ::= INSN_LABEL_LIT ( ';' INSN_LABEL_LIT )* INSN_LABEL_LIT ::= INSN_TEMPL - | 'LABEL' num - | 'LITERAL' num ' ' VARIABLE + | 'LABEL' + | 'LITERAL' VARIABLE The operands in a PRECOND must be constants or variables bound by the INSN_PATTERN. @@ -72,12 +72,12 @@ movi.n instruction to the wide movi instruction. A more complex example of a branch around: - {"beqz %as,%label", "bnez %as,%LABEL0;j %label;LABEL0"} + {"beqz %as,%label", "bnez %as,%LABEL;j %label;LABEL"} would convert a branch to a negated branch to the following instruction with a jump to the original label. An Xtensa-specific example that generates a literal: - {"movi %at,%imm", "LITERAL0 %imm; l32r %at,%LITERAL0"} + {"movi %at,%imm", "LITERAL %imm; l32r %at,%LITERAL"} will convert a movi instruction to an l32r of a literal literal defined in the literal pool. @@ -87,7 +87,7 @@ when the first and second operands are not the same as specified by the "| %at!=%as" precondition clause. {"l32i %at,%as,%imm | %at!=%as", - "LITERAL0 %imm; l32r %at,%LITERAL0; add %at,%at,%as; l32i %at,%at,0"} + "LITERAL %imm; l32r %at,%LITERAL; add %at,%at,%as; l32i %at,%at,0"} There is special case for loop instructions here, but because we do not currently have the ability to represent the difference of two @@ -268,7 +268,7 @@ static string_pattern_pair widen_spec_list[] = /* Widening with literals or const16. */ {"movi %at,%imm ? IsaUseL32R ", - "LITERAL0 %imm; l32r %at,%LITERAL0"}, + "LITERAL %imm; l32r %at,%LITERAL"}, {"movi %at,%imm ? IsaUseConst16", "const16 %at,HI16U(%imm); const16 %at,LOW16U(%imm)"}, @@ -279,19 +279,19 @@ static string_pattern_pair widen_spec_list[] = /* In the end convert to either an l32r or const16. */ {"addmi %ar,%as,%imm | %ar!=%as ? IsaUseL32R", - "LITERAL0 %imm; l32r %ar,%LITERAL0; add %ar,%as,%ar"}, + "LITERAL %imm; l32r %ar,%LITERAL; add %ar,%as,%ar"}, {"addmi %ar,%as,%imm | %ar!=%as ? IsaUseConst16", "const16 %ar,HI16U(%imm); const16 %ar,LOW16U(%imm); add %ar,%as,%ar"}, /* Widening the load instructions with too-large immediates */ {"l8ui %at,%as,%imm | %at!=%as ? IsaUseL32R", - "LITERAL0 %imm; l32r %at,%LITERAL0; add %at,%at,%as; l8ui %at,%at,0"}, + "LITERAL %imm; l32r %at,%LITERAL; add %at,%at,%as; l8ui %at,%at,0"}, {"l16si %at,%as,%imm | %at!=%as ? IsaUseL32R", - "LITERAL0 %imm; l32r %at,%LITERAL0; add %at,%at,%as; l16si %at,%at,0"}, + "LITERAL %imm; l32r %at,%LITERAL; add %at,%at,%as; l16si %at,%at,0"}, {"l16ui %at,%as,%imm | %at!=%as ? IsaUseL32R", - "LITERAL0 %imm; l32r %at,%LITERAL0; add %at,%at,%as; l16ui %at,%at,0"}, + "LITERAL %imm; l32r %at,%LITERAL; add %at,%at,%as; l16ui %at,%at,0"}, {"l32i %at,%as,%imm | %at!=%as ? IsaUseL32R", - "LITERAL0 %imm; l32r %at,%LITERAL0; add %at,%at,%as; l32i %at,%at,0"}, + "LITERAL %imm; l32r %at,%LITERAL; add %at,%at,%as; l32i %at,%at,0"}, /* Widening load instructions with const16s. */ {"l8ui %at,%as,%imm | %at!=%as ? IsaUseConst16", @@ -307,7 +307,7 @@ static string_pattern_pair widen_spec_list[] = hardcoded into its use is a modification of the final operand in the instruction in bytes 9 and 12. */ {"loop %as,%label | %as!=1 ? IsaUseLoops", - "loop %as,%LABEL0;" + "loop %as,%LABEL;" "rsr.lend %as;" /* LEND */ "wsr.lbeg %as;" /* LBEG */ "addi %as, %as, 0;" /* lo8(%label-%LABEL1) */ @@ -316,11 +316,11 @@ static string_pattern_pair widen_spec_list[] = "isync;" "rsr.lcount %as;" /* LCOUNT */ "addi %as, %as, 1;" /* density -> addi.n %as, %as, 1 */ - "LABEL0"}, + "LABEL"}, {"loopgtz %as,%label | %as!=1 ? IsaUseLoops", "beqz %as,%label;" "bltz %as,%label;" - "loopgtz %as,%LABEL0;" + "loopgtz %as,%LABEL;" "rsr.lend %as;" /* LEND */ "wsr.lbeg %as;" /* LBEG */ "addi %as, %as, 0;" /* lo8(%label-%LABEL1) */ @@ -329,10 +329,10 @@ static string_pattern_pair widen_spec_list[] = "isync;" "rsr.lcount %as;" /* LCOUNT */ "addi %as, %as, 1;" /* density -> addi.n %as, %as, 1 */ - "LABEL0"}, + "LABEL"}, {"loopnez %as,%label | %as!=1 ? IsaUseLoops", "beqz %as,%label;" - "loopnez %as,%LABEL0;" + "loopnez %as,%LABEL;" "rsr.lend %as;" /* LEND */ "wsr.lbeg %as;" /* LBEG */ "addi %as, %as, 0;" /* lo8(%label-%LABEL1) */ @@ -341,7 +341,7 @@ static string_pattern_pair widen_spec_list[] = "isync;" "rsr.lcount %as;" /* LCOUNT */ "addi %as, %as, 1;" /* density -> addi.n %as, %as, 1 */ - "LABEL0"}, + "LABEL"}, /* Relaxing to wide branches. Order is important here. With wide branches, there is more than one correct relaxation for an @@ -376,54 +376,54 @@ static string_pattern_pair widen_spec_list[] = /* Widening branch comparisons eq/ne to zero. Prefer relaxing to narrow branches if the density option is available. */ - {"beqz %as,%label ? IsaUseDensityInstruction", "bnez.n %as,%LABEL0;j %label;LABEL0"}, - {"bnez %as,%label ? IsaUseDensityInstruction", "beqz.n %as,%LABEL0;j %label;LABEL0"}, - {"beqz %as,%label", "bnez %as,%LABEL0;j %label;LABEL0"}, - {"bnez %as,%label", "beqz %as,%LABEL0;j %label;LABEL0"}, + {"beqz %as,%label ? IsaUseDensityInstruction", "bnez.n %as,%LABEL;j %label;LABEL"}, + {"bnez %as,%label ? IsaUseDensityInstruction", "beqz.n %as,%LABEL;j %label;LABEL"}, + {"beqz %as,%label", "bnez %as,%LABEL;j %label;LABEL"}, + {"bnez %as,%label", "beqz %as,%LABEL;j %label;LABEL"}, /* Widening expect-taken branches. */ - {"beqzt %as,%label ? IsaUsePredictedBranches", "bnez %as,%LABEL0;j %label;LABEL0"}, - {"bnezt %as,%label ? IsaUsePredictedBranches", "beqz %as,%LABEL0;j %label;LABEL0"}, - {"beqt %as,%at,%label ? IsaUsePredictedBranches", "bne %as,%at,%LABEL0;j %label;LABEL0"}, - {"bnet %as,%at,%label ? IsaUsePredictedBranches", "beq %as,%at,%LABEL0;j %label;LABEL0"}, + {"beqzt %as,%label ? IsaUsePredictedBranches", "bnez %as,%LABEL;j %label;LABEL"}, + {"bnezt %as,%label ? IsaUsePredictedBranches", "beqz %as,%LABEL;j %label;LABEL"}, + {"beqt %as,%at,%label ? IsaUsePredictedBranches", "bne %as,%at,%LABEL;j %label;LABEL"}, + {"bnet %as,%at,%label ? IsaUsePredictedBranches", "beq %as,%at,%LABEL;j %label;LABEL"}, /* Widening branches from the Xtensa boolean option. */ - {"bt %bs,%label ? IsaUseBooleans", "bf %bs,%LABEL0;j %label;LABEL0"}, - {"bf %bs,%label ? IsaUseBooleans", "bt %bs,%LABEL0;j %label;LABEL0"}, + {"bt %bs,%label ? IsaUseBooleans", "bf %bs,%LABEL;j %label;LABEL"}, + {"bf %bs,%label ? IsaUseBooleans", "bt %bs,%LABEL;j %label;LABEL"}, /* Other branch-around-jump widenings. */ - {"bgez %as,%label", "bltz %as,%LABEL0;j %label;LABEL0"}, - {"bltz %as,%label", "bgez %as,%LABEL0;j %label;LABEL0"}, - {"beqi %as,%imm,%label", "bnei %as,%imm,%LABEL0;j %label;LABEL0"}, - {"bnei %as,%imm,%label", "beqi %as,%imm,%LABEL0;j %label;LABEL0"}, - {"bgei %as,%imm,%label", "blti %as,%imm,%LABEL0;j %label;LABEL0"}, - {"blti %as,%imm,%label", "bgei %as,%imm,%LABEL0;j %label;LABEL0"}, - {"bgeui %as,%imm,%label", "bltui %as,%imm,%LABEL0;j %label;LABEL0"}, - {"bltui %as,%imm,%label", "bgeui %as,%imm,%LABEL0;j %label;LABEL0"}, - {"bbci %as,%imm,%label", "bbsi %as,%imm,%LABEL0;j %label;LABEL0"}, - {"bbsi %as,%imm,%label", "bbci %as,%imm,%LABEL0;j %label;LABEL0"}, - {"beq %as,%at,%label", "bne %as,%at,%LABEL0;j %label;LABEL0"}, - {"bne %as,%at,%label", "beq %as,%at,%LABEL0;j %label;LABEL0"}, - {"bge %as,%at,%label", "blt %as,%at,%LABEL0;j %label;LABEL0"}, - {"blt %as,%at,%label", "bge %as,%at,%LABEL0;j %label;LABEL0"}, - {"bgeu %as,%at,%label", "bltu %as,%at,%LABEL0;j %label;LABEL0"}, - {"bltu %as,%at,%label", "bgeu %as,%at,%LABEL0;j %label;LABEL0"}, - {"bany %as,%at,%label", "bnone %as,%at,%LABEL0;j %label;LABEL0"}, - {"bnone %as,%at,%label", "bany %as,%at,%LABEL0;j %label;LABEL0"}, - {"ball %as,%at,%label", "bnall %as,%at,%LABEL0;j %label;LABEL0"}, - {"bnall %as,%at,%label", "ball %as,%at,%LABEL0;j %label;LABEL0"}, - {"bbc %as,%at,%label", "bbs %as,%at,%LABEL0;j %label;LABEL0"}, - {"bbs %as,%at,%label", "bbc %as,%at,%LABEL0;j %label;LABEL0"}, + {"bgez %as,%label", "bltz %as,%LABEL;j %label;LABEL"}, + {"bltz %as,%label", "bgez %as,%LABEL;j %label;LABEL"}, + {"beqi %as,%imm,%label", "bnei %as,%imm,%LABEL;j %label;LABEL"}, + {"bnei %as,%imm,%label", "beqi %as,%imm,%LABEL;j %label;LABEL"}, + {"bgei %as,%imm,%label", "blti %as,%imm,%LABEL;j %label;LABEL"}, + {"blti %as,%imm,%label", "bgei %as,%imm,%LABEL;j %label;LABEL"}, + {"bgeui %as,%imm,%label", "bltui %as,%imm,%LABEL;j %label;LABEL"}, + {"bltui %as,%imm,%label", "bgeui %as,%imm,%LABEL;j %label;LABEL"}, + {"bbci %as,%imm,%label", "bbsi %as,%imm,%LABEL;j %label;LABEL"}, + {"bbsi %as,%imm,%label", "bbci %as,%imm,%LABEL;j %label;LABEL"}, + {"beq %as,%at,%label", "bne %as,%at,%LABEL;j %label;LABEL"}, + {"bne %as,%at,%label", "beq %as,%at,%LABEL;j %label;LABEL"}, + {"bge %as,%at,%label", "blt %as,%at,%LABEL;j %label;LABEL"}, + {"blt %as,%at,%label", "bge %as,%at,%LABEL;j %label;LABEL"}, + {"bgeu %as,%at,%label", "bltu %as,%at,%LABEL;j %label;LABEL"}, + {"bltu %as,%at,%label", "bgeu %as,%at,%LABEL;j %label;LABEL"}, + {"bany %as,%at,%label", "bnone %as,%at,%LABEL;j %label;LABEL"}, + {"bnone %as,%at,%label", "bany %as,%at,%LABEL;j %label;LABEL"}, + {"ball %as,%at,%label", "bnall %as,%at,%LABEL;j %label;LABEL"}, + {"bnall %as,%at,%label", "ball %as,%at,%LABEL;j %label;LABEL"}, + {"bbc %as,%at,%label", "bbs %as,%at,%LABEL;j %label;LABEL"}, + {"bbs %as,%at,%label", "bbc %as,%at,%LABEL;j %label;LABEL"}, /* Expanding calls with literals. */ {"call0 %label,%ar0 ? IsaUseL32R", - "LITERAL0 %label; l32r a0,%LITERAL0; callx0 a0,%ar0"}, + "LITERAL %label; l32r a0,%LITERAL; callx0 a0,%ar0"}, {"call4 %label,%ar4 ? IsaUseL32R", - "LITERAL0 %label; l32r a4,%LITERAL0; callx4 a4,%ar4"}, + "LITERAL %label; l32r a4,%LITERAL; callx4 a4,%ar4"}, {"call8 %label,%ar8 ? IsaUseL32R", - "LITERAL0 %label; l32r a8,%LITERAL0; callx8 a8,%ar8"}, + "LITERAL %label; l32r a8,%LITERAL; callx8 a8,%ar8"}, {"call12 %label,%ar12 ? IsaUseL32R", - "LITERAL0 %label; l32r a12,%LITERAL0; callx12 a12,%ar12"}, + "LITERAL %label; l32r a12,%LITERAL; callx12 a12,%ar12"}, /* Expanding calls with const16. */ {"call0 %label,%ar0 ? IsaUseConst16", @@ -615,26 +615,26 @@ append_op (BuildInstr *bi, BuildOp *b_op) static void -append_literal_op (BuildInstr *bi, unsigned op1, unsigned litnum) +append_literal_op (BuildInstr *bi, unsigned op1) { BuildOp *b_op = (BuildOp *) xmalloc (sizeof (BuildOp)); b_op->op_num = op1; b_op->typ = OP_LITERAL; - b_op->op_data = litnum; + b_op->op_data = 0; b_op->next = NULL; append_op (bi, b_op); } static void -append_label_op (BuildInstr *bi, unsigned op1, unsigned labnum) +append_label_op (BuildInstr *bi, unsigned op1) { BuildOp *b_op = (BuildOp *) xmalloc (sizeof (BuildOp)); b_op->op_num = op1; b_op->typ = OP_LABEL; - b_op->op_data = labnum; + b_op->op_data = 0; b_op->next = NULL; append_op (bi, b_op); } @@ -982,30 +982,6 @@ parse_constant (const char *in, unsigned *val_p) } -/* Match a pattern like "foo1" with - parse_id_constant("foo1", "foo", &num). - This may also be used to just match a number. */ - -static bfd_boolean -parse_id_constant (const char *in, const char *name, unsigned *val_p) -{ - unsigned namelen = 0; - const char *p; - - if (in == NULL) - return FALSE; - - if (name != NULL) - namelen = strlen (name); - - if (name != NULL && strncmp (in, name, namelen) != 0) - return FALSE; - - p = &in[namelen]; - return parse_constant (p, val_p); -} - - static bfd_boolean parse_special_fn (const char *name, const char **fn_name_p, @@ -1594,10 +1570,6 @@ build_transition (insn_pattern *initial_insn, precond_e *precond; insn_repl_e *r; - unsigned label_count = 0; - unsigned max_label_count = 0; - bfd_boolean has_label = FALSE; - unsigned literal_count = 0; opcode = xtensa_opcode_lookup (isa, initial_insn->t.opcode_name); if (opcode == XTENSA_UNDEFINED) @@ -1695,12 +1667,11 @@ build_transition (insn_pattern *initial_insn, tr->options = clone_req_option_list (initial_insn->options); /* Generate the replacement instructions. Some of these - "instructions" are actually labels and literals. The literals - must be defined in order 0..n and a literal must be defined - (e.g., "LITERAL0 %imm") before use (e.g., "%LITERAL0"). The - labels must be defined in order, but they can be used before they - are defined. Also there are a number of special operands (e.g., - HI24S). */ + "instructions" are actually labels and literals. There can be at + most one literal and at most one label. A literal must be defined + (e.g., "LITERAL %imm") before use (e.g., "%LITERAL"). The labels + can be used before they are defined. Also there are a number of + special operands (e.g., HI24S). */ for (r = replace_insns->head; r != NULL; r = r->next) { @@ -1708,14 +1679,12 @@ build_transition (insn_pattern *initial_insn, const char *opcode_name; int operand_count; opname_map_e *op; - unsigned idnum = 0; const char *fn_name; const char *operand_arg_name; bi = (BuildInstr *) xmalloc (sizeof (BuildInstr)); append_build_insn (tr, bi); - bi->id = 0; bi->opcode = XTENSA_UNDEFINED; bi->ops = NULL; bi->next = NULL; @@ -1723,24 +1692,15 @@ build_transition (insn_pattern *initial_insn, opcode_name = r->t.opcode_name; operand_count = insn_templ_operand_count (&r->t); - if (parse_id_constant (opcode_name, "LITERAL", &idnum)) + if (strcmp (opcode_name, "LITERAL") == 0) { bi->typ = INSTR_LITERAL_DEF; - bi->id = idnum; - if (idnum != literal_count) - as_fatal (_("generated literals must be numbered consecutively")); - ++literal_count; if (operand_count != 1) as_fatal (_("expected one operand for generated literal")); - } - else if (parse_id_constant (opcode_name, "LABEL", &idnum)) + else if (strcmp (opcode_name, "LABEL") == 0) { bi->typ = INSTR_LABEL_DEF; - bi->id = idnum; - if (idnum != label_count) - as_fatal (_("generated labels must be numbered consecutively")); - ++label_count; if (operand_count != 0) as_fatal (_("expected 0 operands for generated label")); } @@ -1774,22 +1734,12 @@ build_transition (insn_pattern *initial_insn, if (op_is_constant (op)) append_constant_op (bi, op->operand_num, op_get_constant (op)); - else if (parse_id_constant (op->operand_name, "%LITERAL", &idnum)) - { - if (idnum >= literal_count) - as_fatal (_("opcode %s: replacement " - "literal %d >= literal_count(%d)"), - opcode_name, idnum, literal_count); - append_literal_op (bi, op->operand_num, idnum); - } - else if (parse_id_constant (op->operand_name, "%LABEL", &idnum)) - { - has_label = TRUE; - if (idnum > max_label_count) - max_label_count = idnum; - append_label_op (bi, op->operand_num, idnum); - } - else if (parse_id_constant (op->operand_name, "a", &idnum)) + else if (strcmp (op->operand_name, "%LITERAL") == 0) + append_literal_op (bi, op->operand_num); + else if (strcmp (op->operand_name, "%LABEL") == 0) + append_label_op (bi, op->operand_num); + else if (op->operand_name[0] == 'a' + && parse_constant (op->operand_name + 1, &idnum)) append_constant_op (bi, op->operand_num, idnum); else if (op->operand_name[0] == '%') { @@ -1833,10 +1783,6 @@ build_transition (insn_pattern *initial_insn, opcode_name, op->operand_name, to_string); } } - if (has_label && max_label_count >= label_count) - as_fatal (_("opcode %s: replacement label %d >= label_count(%d)"), - xtensa_opcode_name (isa, opcode), - max_label_count, label_count); return tr; } |