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author | Yeongkyoon Lee <yeongkyoon.lee@samsung.com> | 2012-10-31 16:04:25 +0900 |
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committer | Blue Swirl <blauwirbel@gmail.com> | 2012-11-03 09:44:21 +0000 |
commit | b76f0d8c2e3eac94bc7fd90a510cb7426b2a2699 (patch) | |
tree | 484d23d99567f7c3766854d6edf67051518cbf5d /tcg/tcg.c | |
parent | fdbb84d1332ae0827d60f1a2ca03c7d5678c6edd (diff) | |
download | qemu-b76f0d8c2e3eac94bc7fd90a510cb7426b2a2699.zip qemu-b76f0d8c2e3eac94bc7fd90a510cb7426b2a2699.tar.gz qemu-b76f0d8c2e3eac94bc7fd90a510cb7426b2a2699.tar.bz2 |
tcg: Optimize qemu_ld/st by generating slow paths at the end of a block
Add optimized TCG qemu_ld/st generation which locates the code of TLB miss
cases at the end of a block after generating the other IRs.
Currently, this optimization supports only i386 and x86_64 hosts.
Signed-off-by: Yeongkyoon Lee <yeongkyoon.lee@samsung.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'tcg/tcg.c')
-rw-r--r-- | tcg/tcg.c | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -299,6 +299,14 @@ void tcg_func_start(TCGContext *s) gen_opc_ptr = gen_opc_buf; gen_opparam_ptr = gen_opparam_buf; + +#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU) + /* Initialize qemu_ld/st labels to assist code generation at the end of TB + for TLB miss cases at the end of TB */ + s->qemu_ldst_labels = tcg_malloc(sizeof(TCGLabelQemuLdst) * + TCG_MAX_QEMU_LDST); + s->nb_qemu_ldst_labels = 0; +#endif } static inline void tcg_temp_alloc(TCGContext *s, int n) @@ -2314,6 +2322,10 @@ static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf, #endif } the_end: +#if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU) + /* Generate TB finalization at the end of block */ + tcg_out_tb_finalize(s); +#endif return -1; } |