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[Qemu-devel] [PATCH v2 3/3] revert "TCG: fix copy propagation"
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PATCH v2 3/3] revert "TCG: fix copy propagation" |
Date: |
Mon, 10 Sep 2012 14:53:04 +0200 |
Given the copy propagation breakage on 32-bit hosts has been fixed
commit e31b0a7c050711884ad570fe73df806520953618 can be reverted.
Cc: Blue Swirl <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>
---
tcg/optimize.c | 15 ++++++---------
tcg/tcg.h | 5 -----
2 files changed, 6 insertions(+), 14 deletions(-)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 64aa35b..c312c8f 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -107,15 +107,12 @@ static TCGOpcode op_to_movi(TCGOpcode op)
}
}
-static void tcg_opt_gen_mov(TCGContext *s, TCGArg *gen_args, TCGArg dst,
- TCGArg src, int nb_temps, int nb_globals)
+static void tcg_opt_gen_mov(TCGArg *gen_args, TCGArg dst, TCGArg src,
+ int nb_temps, int nb_globals)
{
reset_temp(dst, nb_temps, nb_globals);
assert(temps[src].state != TCG_TEMP_COPY);
- /* Don't try to copy if one of temps is a global or either one
- is local and another is register */
- if (src >= nb_globals && dst >= nb_globals &&
- tcg_arg_is_local(s, src) == tcg_arg_is_local(s, dst)) {
+ if (src >= nb_globals) {
assert(temps[src].state != TCG_TEMP_CONST);
if (temps[src].state != TCG_TEMP_HAS_COPY) {
temps[src].state = TCG_TEMP_HAS_COPY;
@@ -344,7 +341,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t
*tcg_opc_ptr,
gen_opc_buf[op_index] = INDEX_op_nop;
} else {
gen_opc_buf[op_index] = op_to_mov(op);
- tcg_opt_gen_mov(s, gen_args, args[0], args[1],
+ tcg_opt_gen_mov(gen_args, args[0], args[1],
nb_temps, nb_globals);
gen_args += 2;
args += 3;
@@ -370,7 +367,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t
*tcg_opc_ptr,
gen_opc_buf[op_index] = INDEX_op_nop;
} else {
gen_opc_buf[op_index] = op_to_mov(op);
- tcg_opt_gen_mov(s, gen_args, args[0], args[1], nb_temps,
+ tcg_opt_gen_mov(gen_args, args[0], args[1], nb_temps,
nb_globals);
gen_args += 2;
args += 3;
@@ -395,7 +392,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t
*tcg_opc_ptr,
break;
}
if (temps[args[1]].state != TCG_TEMP_CONST) {
- tcg_opt_gen_mov(s, gen_args, args[0], args[1],
+ tcg_opt_gen_mov(gen_args, args[0], args[1],
nb_temps, nb_globals);
gen_args += 2;
args += 2;
diff --git a/tcg/tcg.h b/tcg/tcg.h
index d710694..8fbbc81 100644
--- a/tcg/tcg.h
+++ b/tcg/tcg.h
@@ -458,11 +458,6 @@ static inline TCGv_i64 tcg_temp_local_new_i64(void)
void tcg_temp_free_i64(TCGv_i64 arg);
char *tcg_get_arg_str_i64(TCGContext *s, char *buf, int buf_size, TCGv_i64
arg);
-static inline bool tcg_arg_is_local(TCGContext *s, TCGArg arg)
-{
- return s->temps[arg].temp_local;
-}
-
#if defined(CONFIG_DEBUG_TCG)
/* If you call tcg_clear_temp_count() at the start of a section of
* code which is not supposed to leak any TCG temporaries, then
--
1.7.10.4