diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2024-12-07 18:14:45 +0000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2024-12-12 14:28:38 -0600 |
| commit | 04e006ab36a8565b92d4e21dd346367fbade7d74 (patch) | |
| tree | 8364771d26de817936e3f96022fe60a59b9a870e /include | |
| parent | a5ba0a7e4e150d1350a041f0d0ef9ca6c8d7c307 (diff) | |
| download | qemu-04e006ab36a8565b92d4e21dd346367fbade7d74.zip qemu-04e006ab36a8565b92d4e21dd346367fbade7d74.tar.gz qemu-04e006ab36a8565b92d4e21dd346367fbade7d74.tar.bz2 | |
tcg: Reset free_temps before tcg_optimize
When allocating new temps during tcg_optmize, do not re-use
any EBB temps that were used within the TB. We do not have
any idea what span of the TB in which the temp was live.
Introduce tcg_temp_ebb_reset_freed and use before tcg_optimize,
as well as replacing the equivalent in plugin_gen_inject and
tcg_func_start.
Cc: qemu-stable@nongnu.org
Fixes: fb04ab7ddd8 ("tcg/optimize: Lower TCG_COND_TST{EQ,NE} if unsupported")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2711
Reported-by: wannacu <wannacu2049@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/tcg/tcg-temp-internal.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/tcg/tcg-temp-internal.h b/include/tcg/tcg-temp-internal.h index 44192c5..98f91e6 100644 --- a/include/tcg/tcg-temp-internal.h +++ b/include/tcg/tcg-temp-internal.h @@ -42,4 +42,10 @@ TCGv_i64 tcg_temp_ebb_new_i64(void); TCGv_ptr tcg_temp_ebb_new_ptr(void); TCGv_i128 tcg_temp_ebb_new_i128(void); +/* Forget all freed EBB temps, so that new allocations produce new temps. */ +static inline void tcg_temp_ebb_reset_freed(TCGContext *s) +{ + memset(s->free_temps, 0, sizeof(s->free_temps)); +} + #endif /* TCG_TEMP_FREE_H */ |