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[Qemu-devel] [PATCH 2/5] Get rid of temporary variable cache.
From: |
Filip Navara |
Subject: |
[Qemu-devel] [PATCH 2/5] Get rid of temporary variable cache. |
Date: |
Wed, 15 Jul 09 14:28:52 Central Europe Standard Time |
The temporary variable cache in no longer need since tcg_temp_free was
introduced.
Signed-off-by: Filip Navara <address@hidden>
---
target-arm/translate.c | 31 +++----------------------------
1 files changed, 3 insertions(+), 28 deletions(-)
diff --git a/target-arm/translate.c b/target-arm/translate.c
index 0df9bfa..7c6431d 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -111,44 +111,20 @@ void arm_translate_init(void)
#include "helpers.h"
}
-/* The code generator doesn't like lots of temporaries, so maintain our own
- cache for reuse within a function. */
-#define MAX_TEMPS 8
static int num_temps;
-static TCGv temps[MAX_TEMPS];
/* Allocate a temporary variable. */
static TCGv_i32 new_tmp(void)
{
- TCGv tmp;
- if (num_temps == MAX_TEMPS)
- abort();
-
- if (GET_TCGV_I32(temps[num_temps]))
- return temps[num_temps++];
-
- tmp = tcg_temp_new_i32();
- temps[num_temps++] = tmp;
- return tmp;
+ num_temps++;
+ return tcg_temp_new_i32();
}
/* Release a temporary variable. */
static void dead_tmp(TCGv tmp)
{
- int i;
+ tcg_temp_free(tmp);
num_temps--;
- i = num_temps;
- if (TCGV_EQUAL(temps[i], tmp))
- return;
-
- /* Shuffle this temp to the last slot. */
- while (!TCGV_EQUAL(temps[i], tmp))
- i--;
- while (i < num_temps) {
- temps[i] = temps[i + 1];
- i++;
- }
- temps[i] = tmp;
}
static inline TCGv load_cpu_offset(int offset)
@@ -8761,7 +8737,6 @@ static inline void
gen_intermediate_code_internal(CPUState *env,
/* generate intermediate code */
num_temps = 0;
- memset(temps, 0, sizeof(temps));
pc_start = tb->pc;
--
1.6.3.msysgit.0
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