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tcg: Remove unused opcodes 

We no longer need INDEX_op_end to terminate the list, nor do we
need 5 forms of nop, since we just remove the TCGOp instead.

Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2014-03-30 20:40:35 -07:00
parent a4ce099a7a
commit 15fc7daa77
3 changed files with 2 additions and 27 deletions
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9
tcg/tcg-opc.h
View File

@ -27,15 +27,6 @@
*/
/* predefined ops */
DEF(end, 0, 0, 0, TCG_OPF_NOT_PRESENT) /* must be kept first */
DEF(nop, 0, 0, 0, TCG_OPF_NOT_PRESENT)
DEF(nop1, 0, 0, 1, TCG_OPF_NOT_PRESENT)
DEF(nop2, 0, 0, 2, TCG_OPF_NOT_PRESENT)
DEF(nop3, 0, 0, 3, TCG_OPF_NOT_PRESENT)
/* variable number of parameters */
DEF(nopn, 0, 0, 1, TCG_OPF_NOT_PRESENT)
DEF(discard, 1, 0, 0, TCG_OPF_NOT_PRESENT)
DEF(set_label, 0, 0, 1, TCG_OPF_BB_END | TCG_OPF_NOT_PRESENT)

7
tcg/tcg.c
View File

@ -1260,7 +1260,7 @@ void tcg_op_remove(TCGContext *s, TCGOp *op)
s->gen_first_op_idx = next;
}
*op = (TCGOp){ .opc = INDEX_op_nop, .next = -1, .prev = -1 };
memset(op, -1, sizeof(*op));
#ifdef CONFIG_PROFILER
s->del_op_count++;
@ -1385,8 +1385,6 @@ static void tcg_liveness_analysis(TCGContext *s)
}
break;
case INDEX_op_debug_insn_start:
case INDEX_op_nop:
case INDEX_op_end:
break;
case INDEX_op_discard:
/* mark the temporary as dead */
@ -2244,7 +2242,7 @@ void tcg_dump_op_count(FILE *f, fprintf_function cpu_fprintf)
{
int i;
for(i = INDEX_op_end; i < NB_OPS; i++) {
for (i = 0; i < NB_OPS; i++) {
cpu_fprintf(f, "%s %" PRId64 "\n", tcg_op_defs[i].name,
tcg_table_op_count[i]);
}
@ -2328,7 +2326,6 @@ static inline int tcg_gen_code_common(TCGContext *s,
tcg_reg_alloc_movi(s, args, dead_args, sync_args);
break;
case INDEX_op_debug_insn_start:
case INDEX_op_nop:
break;
case INDEX_op_discard:
temp_dead(s, args[0]);

13
tci.c
View File

@ -506,19 +506,6 @@ uintptr_t tcg_qemu_tb_exec(CPUArchState *env, uint8_t *tb_ptr)
tb_ptr += 2;
switch (opc) {
case INDEX_op_end:
case INDEX_op_nop:
break;
case INDEX_op_nop1:
case INDEX_op_nop2:
case INDEX_op_nop3:
case INDEX_op_nopn:
case INDEX_op_discard:
TODO();
break;
case INDEX_op_set_label:
TODO();
break;
case INDEX_op_call:
t0 = tci_read_ri(&tb_ptr);
#if TCG_TARGET_REG_BITS == 32