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| author | Richard Henderson <rth@twiddle.net> | 2012-10-10 09:02:43 -0700 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2012-10-13 10:39:53 +0000 |
| commit | fd84ea2391c044a7840c25dd35336bdaf2a302d0 (patch) | |
| tree | da89175c8256e920ddeead4feebe0344820775ba /tcg | |
| parent | 89269f6cea17d8381e0c366c44780f58ac3c67d8 (diff) | |
| download | qemu-fd84ea2391c044a7840c25dd35336bdaf2a302d0.tar.gz qemu-fd84ea2391c044a7840c25dd35336bdaf2a302d0.tar.bz2 qemu-fd84ea2391c044a7840c25dd35336bdaf2a302d0.zip | |
tcg-sparc: Optimize setcond2 equality compare with 0.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/sparc/tcg-target.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c index f7d52d63e2..9c87cb632a 100644 --- a/tcg/sparc/tcg-target.c +++ b/tcg/sparc/tcg-target.c @@ -693,9 +693,18 @@ static void tcg_out_setcond2_i32(TCGContext *s, TCGCond cond, TCGArg ret, switch (cond) { case TCG_COND_EQ: case TCG_COND_NE: - tcg_out_setcond_i32(s, cond, tmp, al, bl, blconst); - tcg_out_cmp(s, ah, bh, bhconst); - tcg_out_mov(s, TCG_TYPE_I32, ret, tmp); + if (bl == 0 && bh == 0) { + if (cond == TCG_COND_EQ) { + tcg_out_arith(s, TCG_REG_G0, al, ah, ARITH_ORCC); + tcg_out_movi(s, TCG_TYPE_I32, ret, 1); + } else { + tcg_out_arith(s, ret, al, ah, ARITH_ORCC); + } + } else { + tcg_out_setcond_i32(s, cond, tmp, al, bl, blconst); + tcg_out_cmp(s, ah, bh, bhconst); + tcg_out_mov(s, TCG_TYPE_I32, ret, tmp); + } tcg_out_movcc(s, TCG_COND_NE, MOVCC_ICC, ret, cond == TCG_COND_NE, 1); break; |