提交 24c7f754 编写于 作者: R Richard Henderson 提交者: Blue Swirl

tcg-sparc: Fix brcond2

Much the same problem as recently fixed for hppa.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
上级 20132b96
......@@ -561,33 +561,24 @@ static void tcg_out_brcond2_i32(TCGContext *s, TCGCond cond,
/* Note that we fill one of the delay slots with the second compare. */
switch (cond) {
case TCG_COND_EQ:
cc = INSN_COND(tcg_cond_to_bcond[TCG_COND_NE], 0);
tcg_out_branch_i32(s, cc, label_next);
tcg_out_branch_i32(s, COND_NE, label_next);
tcg_out_cmp(s, al, bl, blconst);
cc = INSN_COND(tcg_cond_to_bcond[TCG_COND_EQ], 0);
tcg_out_branch_i32(s, cc, label_dest);
tcg_out_branch_i32(s, COND_E, label_dest);
break;
case TCG_COND_NE:
cc = INSN_COND(tcg_cond_to_bcond[TCG_COND_NE], 0);
tcg_out_branch_i32(s, cc, label_dest);
tcg_out_branch_i32(s, COND_NE, label_dest);
tcg_out_cmp(s, al, bl, blconst);
tcg_out_branch_i32(s, cc, label_dest);
tcg_out_branch_i32(s, COND_NE, label_dest);
break;
default:
/* ??? One could fairly easily special-case 64-bit unsigned
compares against 32-bit zero-extended constants. For instance,
we know that (unsigned)AH < 0 is false and need not emit it.
Similarly, (unsigned)AH > 0 being true implies AH != 0, so the
second branch will never be taken. */
cc = INSN_COND(tcg_cond_to_bcond[cond], 0);
cc = tcg_cond_to_bcond[tcg_high_cond(cond)];
tcg_out_branch_i32(s, cc, label_dest);
tcg_out_nop(s);
cc = INSN_COND(tcg_cond_to_bcond[TCG_COND_NE], 0);
tcg_out_branch_i32(s, cc, label_next);
tcg_out_branch_i32(s, COND_NE, label_next);
tcg_out_cmp(s, al, bl, blconst);
cc = INSN_COND(tcg_cond_to_bcond[tcg_unsigned_cond(cond)], 0);
cc = tcg_cond_to_bcond[tcg_unsigned_cond(cond)];
tcg_out_branch_i32(s, cc, label_dest);
break;
}
......
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