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tcg: Dump register preference info with liveness

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Reviewed-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2018-11-27 12:46:00 -08:00
parent d62816f2db
commit 1894f69a61
2 changed files with 37 additions and 10 deletions
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44
tcg/tcg.c
View File

@ -1901,7 +1901,7 @@ static inline TCGReg tcg_regset_first(TCGRegSet d)
}
}
void tcg_dump_ops(TCGContext *s)
static void tcg_dump_ops(TCGContext *s, bool have_prefs)
{
char buf[128];
TCGOp *op;
@ -2036,12 +2036,15 @@ void tcg_dump_ops(TCGContext *s)
col += qemu_log("%s$0x%" TCG_PRIlx, k ? "," : "", op->args[k]);
}
}
if (op->life) {
unsigned life = op->life;
for (; col < 48; ++col) {
if (have_prefs || op->life) {
for (; col < 40; ++col) {
putc(' ', qemu_logfile);
}
}
if (op->life) {
unsigned life = op->life;
if (life & (SYNC_ARG * 3)) {
qemu_log(" sync:");
@ -2061,6 +2064,33 @@ void tcg_dump_ops(TCGContext *s)
}
}
}
if (have_prefs) {
for (i = 0; i < nb_oargs; ++i) {
TCGRegSet set = op->output_pref[i];
if (i == 0) {
qemu_log(" pref=");
} else {
qemu_log(",");
}
if (set == 0) {
qemu_log("none");
} else if (set == MAKE_64BIT_MASK(0, TCG_TARGET_NB_REGS)) {
qemu_log("all");
#ifdef CONFIG_DEBUG_TCG
} else if (tcg_regset_single(set)) {
TCGReg reg = tcg_regset_first(set);
qemu_log("%s", tcg_target_reg_names[reg]);
#endif
} else if (TCG_TARGET_NB_REGS <= 32) {
qemu_log("%#x", (uint32_t)set);
} else {
qemu_log("%#" PRIx64, (uint64_t)set);
}
}
}
qemu_log("\n");
}
}
@ -3647,7 +3677,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
&& qemu_log_in_addr_range(tb->pc))) {
qemu_log_lock();
qemu_log("OP:\n");
tcg_dump_ops(s);
tcg_dump_ops(s, false);
qemu_log("\n");
qemu_log_unlock();
}
@ -3675,7 +3705,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
&& qemu_log_in_addr_range(tb->pc))) {
qemu_log_lock();
qemu_log("OP before indirect lowering:\n");
tcg_dump_ops(s);
tcg_dump_ops(s, false);
qemu_log("\n");
qemu_log_unlock();
}
@ -3696,7 +3726,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
&& qemu_log_in_addr_range(tb->pc))) {
qemu_log_lock();
qemu_log("OP after optimization and liveness analysis:\n");
tcg_dump_ops(s);
tcg_dump_ops(s, true);
qemu_log("\n");
qemu_log_unlock();
}

3
tcg/tcg.h
View File

@ -1082,9 +1082,6 @@ TCGOp *tcg_op_insert_after(TCGContext *s, TCGOp *op, TCGOpcode opc);
void tcg_optimize(TCGContext *s);
/* only used for debugging purposes */
void tcg_dump_ops(TCGContext *s);
TCGv_i32 tcg_const_i32(int32_t val);
TCGv_i64 tcg_const_i64(int64_t val);
TCGv_i32 tcg_const_local_i32(int32_t val);