From d799f8ad08742e9c042e208d970febf87a2c4901 Mon Sep 17 00:00:00 2001 From: Taylor Simpson Date: Thu, 8 Apr 2021 20:07:29 -0500 Subject: [PATCH] Hexagon (target/hexagon) TCG generation cleanup Simplify TCG generation of hex_reg_written Suggested-by: Richard Henderson Signed-off-by: Taylor Simpson Reviewed-by: Richard Henderson Message-Id: <1617930474-31979-2-git-send-email-tsimpson@quicinc.com> Signed-off-by: Richard Henderson --- target/hexagon/genptr.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c index 7481f4c1dd..87f5d92994 100644 --- a/target/hexagon/genptr.c +++ b/target/hexagon/genptr.c @@ -35,7 +35,6 @@ static inline TCGv gen_read_preg(TCGv pred, uint8_t num) static inline void gen_log_predicated_reg_write(int rnum, TCGv val, int slot) { - TCGv one = tcg_const_tl(1); TCGv zero = tcg_const_tl(0); TCGv slot_mask = tcg_temp_new(); @@ -43,12 +42,17 @@ static inline void gen_log_predicated_reg_write(int rnum, TCGv val, int slot) tcg_gen_movcond_tl(TCG_COND_EQ, hex_new_value[rnum], slot_mask, zero, val, hex_new_value[rnum]); #if HEX_DEBUG - /* Do this so HELPER(debug_commit_end) will know */ - tcg_gen_movcond_tl(TCG_COND_EQ, hex_reg_written[rnum], slot_mask, zero, - one, hex_reg_written[rnum]); + /* + * Do this so HELPER(debug_commit_end) will know + * + * Note that slot_mask indicates the value is not written + * (i.e., slot was cancelled), so we create a true/false value before + * or'ing with hex_reg_written[rnum]. + */ + tcg_gen_setcond_tl(TCG_COND_EQ, slot_mask, slot_mask, zero); + tcg_gen_or_tl(hex_reg_written[rnum], hex_reg_written[rnum], slot_mask); #endif - tcg_temp_free(one); tcg_temp_free(zero); tcg_temp_free(slot_mask); }