diff options
| author | Taylor Simpson <tsimpson@quicinc.com> | 2021-04-08 20:07:34 -0500 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-05-01 08:31:43 -0700 |
| commit | 6c677c60ae34bd2c7936781ee8969e41b1dac81e (patch) | |
| tree | 21a5aceea887ffa203dfe343acc30ba15103f04d /target/hexagon/translate.h | |
| parent | 743debbc373ffcd8eb66dc388632c03f5e951bfc (diff) | |
Hexagon (target/hexagon) decide if pred has been written at TCG gen time
Multiple writes to the same preg are and'ed together. Rather than
generating a runtime check, we can determine at TCG generation time
if the predicate has previously been written in the packet.
Test added to tests/tcg/hexagon/misc.c
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <1617930474-31979-7-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/hexagon/translate.h')
| -rw-r--r-- | target/hexagon/translate.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target/hexagon/translate.h b/target/hexagon/translate.h index 12506c8caf..0ecfbd7d52 100644 --- a/target/hexagon/translate.h +++ b/target/hexagon/translate.h @@ -34,6 +34,7 @@ typedef struct DisasContext { DECLARE_BITMAP(regs_written, TOTAL_PER_THREAD_REGS); int preg_log[PRED_WRITES_MAX]; int preg_log_idx; + DECLARE_BITMAP(pregs_written, NUM_PREGS); uint8_t store_width[STORES_MAX]; uint8_t s1_store_processed; } DisasContext; @@ -60,6 +61,7 @@ static inline void ctx_log_pred_write(DisasContext *ctx, int pnum) { ctx->preg_log[ctx->preg_log_idx] = pnum; ctx->preg_log_idx++; + set_bit(pnum, ctx->pregs_written); } static inline bool is_preloaded(DisasContext *ctx, int num) |