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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-08-05 00:31:29 +0000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-08-24 11:22:42 -0700 |
| commit | e3ebbade58aae114c0d61a7365ea54b36f07f2fb (patch) | |
| tree | 19748a3cf16c9f2d03069a38c9596b7086ea278e /target/sparc | |
| parent | 253d110dba77769e1f2919d066c53dfd65942dc3 (diff) | |
| download | qemu-e3ebbade58aae114c0d61a7365ea54b36f07f2fb.zip qemu-e3ebbade58aae114c0d61a7365ea54b36f07f2fb.tar.gz qemu-e3ebbade58aae114c0d61a7365ea54b36f07f2fb.tar.bz2 | |
target/sparc: Use tcg_gen_movcond_i64 in gen_edge
The setcond + neg + or sequence is a complex method of
performing a conditional move.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/sparc')
| -rw-r--r-- | target/sparc/translate.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/target/sparc/translate.c b/target/sparc/translate.c index bd877a5..fa80a91 100644 --- a/target/sparc/translate.c +++ b/target/sparc/translate.c @@ -2916,7 +2916,7 @@ static void gen_edge(DisasContext *dc, TCGv dst, TCGv s1, TCGv s2, tcg_gen_shr_tl(lo1, tcg_constant_tl(tabl), lo1); tcg_gen_shr_tl(lo2, tcg_constant_tl(tabr), lo2); - tcg_gen_andi_tl(dst, lo1, omask); + tcg_gen_andi_tl(lo1, lo1, omask); tcg_gen_andi_tl(lo2, lo2, omask); amask = -8; @@ -2926,18 +2926,9 @@ static void gen_edge(DisasContext *dc, TCGv dst, TCGv s1, TCGv s2, tcg_gen_andi_tl(s1, s1, amask); tcg_gen_andi_tl(s2, s2, amask); - /* We want to compute - dst = (s1 == s2 ? lo1 : lo1 & lo2). - We've already done dst = lo1, so this reduces to - dst &= (s1 == s2 ? -1 : lo2) - Which we perform by - lo2 |= -(s1 == s2) - dst &= lo2 - */ - tcg_gen_setcond_tl(TCG_COND_EQ, lo1, s1, s2); - tcg_gen_neg_tl(lo1, lo1); - tcg_gen_or_tl(lo2, lo2, lo1); - tcg_gen_and_tl(dst, dst, lo2); + /* Compute dst = (s1 == s2 ? lo1 : lo1 & lo2). */ + tcg_gen_and_tl(lo2, lo2, lo1); + tcg_gen_movcond_tl(TCG_COND_EQ, dst, s1, s2, lo1, lo2); } static void gen_alignaddr(TCGv dst, TCGv s1, TCGv s2, bool left) |