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tcg/s390x: Create tgen_cmp2 to simplify movcond

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Return both regular and inverted condition codes from tgen_cmp2.
This lets us choose after the fact which comparision we want.

Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-02-24 03:38:03 +00:00
parent 6c9b5c0f53
commit 5c837bbca6
1 changed files with 16 additions and 3 deletions
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19
tcg/s390x/tcg-target.c.inc
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@ -1207,10 +1207,11 @@ static void tgen_xori(TCGContext *s, TCGReg dest, uint64_t val)
}
}
static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1,
TCGArg c2, bool c2const, bool need_carry)
static int tgen_cmp2(TCGContext *s, TCGType type, TCGCond c, TCGReg r1,
TCGArg c2, bool c2const, bool need_carry, int *inv_cc)
{
bool is_unsigned = is_unsigned_cond(c);
TCGCond inv_c = tcg_invert_cond(c);
S390Opcode op;
if (c2const) {
@ -1221,6 +1222,7 @@ static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1,
} else {
tcg_out_insn(s, RRE, LTGR, r1, r1);
}
*inv_cc = tcg_cond_to_ltr_cond[inv_c];
return tcg_cond_to_ltr_cond[c];
}
}
@ -1263,9 +1265,17 @@ static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1,
}
exit:
*inv_cc = tcg_cond_to_s390_cond[inv_c];
return tcg_cond_to_s390_cond[c];
}
static int tgen_cmp(TCGContext *s, TCGType type, TCGCond c, TCGReg r1,
TCGArg c2, bool c2const, bool need_carry)
{
int inv_cc;
return tgen_cmp2(s, type, c, r1, c2, c2const, need_carry, &inv_cc);
}
static void tgen_setcond(TCGContext *s, TCGType type, TCGCond cond,
TCGReg dest, TCGReg c1, TCGArg c2, int c2const)
{
@ -1348,7 +1358,10 @@ static void tgen_movcond(TCGContext *s, TCGType type, TCGCond c, TCGReg dest,
TCGReg c1, TCGArg c2, int c2const,
TCGArg v3, int v3const)
{
int cc = tgen_cmp(s, type, c, c1, c2, c2const, false);
int cc, inv_cc;
cc = tgen_cmp2(s, type, c, c1, c2, c2const, false, &inv_cc);
if (v3const) {
tcg_out_insn(s, RIEg, LOCGHI, dest, v3, cc);
} else {