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tcg: Dump register preference info with liveness

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Backports commit 1894f69a612b35c2a39b44a824da04d74bfe324a from qemu
This commit is contained in:
Richard Henderson 2019-01-05 06:59:57 -05:00 committed by Lioncash
parent 494d802781
commit b356212b33
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 37 additions and 10 deletions
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44
qemu/tcg/tcg.c
View file

@ -1399,7 +1399,7 @@ 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]; char buf[128];
TCGOp *op; TCGOp *op;
@ -1534,12 +1534,15 @@ void tcg_dump_ops(TCGContext *s)
col += qemu_log("%s$0x%" TCG_PRIlx, k ? "," : "", op->args[k]); 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); putc(' ', qemu_logfile);
} }
}
if (op->life) {
unsigned life = op->life;
if (life & (SYNC_ARG * 3)) { if (life & (SYNC_ARG * 3)) {
qemu_log(" sync:"); qemu_log(" sync:");
@ -1559,6 +1562,33 @@ 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"); qemu_log("\n");
} }
} }
@ -3083,7 +3113,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP) if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)
&& qemu_log_in_addr_range(tb->pc))) { && qemu_log_in_addr_range(tb->pc))) {
qemu_log("OP:\n"); qemu_log("OP:\n");
tcg_dump_ops(s); tcg_dump_ops(s, false);
qemu_log("\n"); qemu_log("\n");
} }
#endif #endif
@ -3109,7 +3139,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_IND) if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_IND)
&& qemu_log_in_addr_range(tb->pc))) { && qemu_log_in_addr_range(tb->pc))) {
qemu_log("OP before indirect lowering:\n"); qemu_log("OP before indirect lowering:\n");
tcg_dump_ops(s); tcg_dump_ops(s, false);
qemu_log("\n"); qemu_log("\n");
} }
#endif #endif
@ -3128,7 +3158,7 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb)
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_OPT) if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_OPT)
&& qemu_log_in_addr_range(tb->pc))) { && qemu_log_in_addr_range(tb->pc))) {
qemu_log("OP after optimization and liveness analysis:\n"); qemu_log("OP after optimization and liveness analysis:\n");
tcg_dump_ops(s); tcg_dump_ops(s, false);
qemu_log("\n"); qemu_log("\n");
} }
#endif #endif

3
qemu/tcg/tcg.h
View file

@ -1191,9 +1191,6 @@ static inline void *tcg_malloc(TCGContext *s, int size)
} }
} }
/* only used for debugging purposes */
void tcg_dump_ops(TCGContext *s);
TCGv_i32 tcg_const_i32(TCGContext *s, int32_t val); TCGv_i32 tcg_const_i32(TCGContext *s, int32_t val);
TCGv_i64 tcg_const_i64(TCGContext *s, int64_t val); TCGv_i64 tcg_const_i64(TCGContext *s, int64_t val);
TCGv_i32 tcg_const_local_i32(TCGContext *s, int32_t val); TCGv_i32 tcg_const_local_i32(TCGContext *s, int32_t val);