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tcg-sparc: Optimize setcond2 equality compare with 0.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2012-10-10 09:02:43 -07:00 committed by Blue Swirl
parent 89269f6cea
commit fd84ea2391
1 changed files with 12 additions and 3 deletions
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9
tcg/sparc/tcg-target.c
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@ -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:
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;