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tcg-sparc: Fix brcond2

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Much the same problem as recently fixed for hppa.

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 09:02:36 -07:00 committed by Blue Swirl
parent 20132b9605
commit 24c7f75459
1 changed files with 7 additions and 16 deletions
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23
tcg/sparc/tcg-target.c
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@ -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;
}