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tcg: Rearrange ldst label tracking

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Dispense with TCGBackendData, as it has never been used for more than
holding a single pointer.  Use a define in the cpu/tcg-target.h to
signal requirement for TCGLabelQemuLdst, so that we can drop the no-op
tcg-be-null.h stubs.  Rename tcg-be-ldst.h to tcg-ldst.inc.c.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2017-07-30 12:30:41 -07:00
parent a858339336
commit 659ef5cbb8
19 changed files with 57 additions and 91 deletions
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17
tcg/tcg.c
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@ -112,10 +112,9 @@ static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,
static void tcg_out_call(TCGContext *s, tcg_insn_unit *target);
static int tcg_target_const_match(tcg_target_long val, TCGType type,
const TCGArgConstraint *arg_ct);
static void tcg_out_tb_init(TCGContext *s);
static bool tcg_out_tb_finalize(TCGContext *s);
#ifdef TCG_TARGET_NEED_LDST_LABELS
static bool tcg_out_ldst_finalize(TCGContext *s);
#endif
static TCGRegSet tcg_target_available_regs[2];
static TCGRegSet tcg_target_call_clobber_regs;
@ -470,8 +469,6 @@ void tcg_func_start(TCGContext *s)
s->gen_op_buf[0].prev = 0;
s->gen_next_op_idx = 1;
s->gen_next_parm_idx = 0;
s->be = tcg_malloc(sizeof(TCGBackendData));
}
static inline int temp_idx(TCGContext *s, TCGTemp *ts)
@ -2619,7 +2616,9 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
s->code_buf = tb->tc_ptr;
s->code_ptr = tb->tc_ptr;
tcg_out_tb_init(s);
#ifdef TCG_TARGET_NEED_LDST_LABELS
s->ldst_labels = NULL;
#endif
num_insns = -1;
for (oi = s->gen_op_buf[0].next; oi != 0; oi = oi_next) {
@ -2694,9 +2693,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
s->gen_insn_end_off[num_insns] = tcg_current_code_size(s);
/* Generate TB finalization at the end of block */
if (!tcg_out_tb_finalize(s)) {
#ifdef TCG_TARGET_NEED_LDST_LABELS
if (!tcg_out_ldst_finalize(s)) {
return -1;
}
#endif
/* flush instruction cache */
flush_icache_range((uintptr_t)s->code_buf, (uintptr_t)s->code_ptr);