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normalize nary checks in fm_poison #1315

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normalize nary checks in fm_poison #1315

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23 changes: 14 additions & 9 deletions ir/instr.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -755,6 +755,8 @@ static StateValue fm_poison(State &s, expr a, const expr &ap, expr b,
bool flags_in_only = false,
const Type *to_ty = nullptr, int nary = 3) {
AndExpr non_poison;
expr fp_a, fp_b, fp_c;

non_poison.add(ap);
if (nary >= 2)
non_poison.add(bp);
Expand All @@ -768,22 +770,25 @@ static StateValue fm_poison(State &s, expr a, const expr &ap, expr b,

if (fmath.flags & FastMathFlags::NSZ) {
a = any_fp_zero(s, std::move(a));
if (nary >= 2) {
if (nary >= 2)
b = any_fp_zero(s, std::move(b));
if (nary == 3)
c = any_fp_zero(s, std::move(c));
}
if (nary >= 3)
c = any_fp_zero(s, std::move(c));
}

expr fp_a = fpty.getFloat(a);
expr fp_b = fpty.getFloat(b);
expr fp_c = fpty.getFloat(c);
fp_a = fpty.getFloat(a);
if (nary >= 2)
fp_b = fpty.getFloat(b);
if (nary >= 3)
fp_c = fpty.getFloat(c);

if (!bitwise) {
auto fpdenormal = s.getFn().getFnAttrs().getFPDenormal(from_ty).input;
fp_a = handle_subnormal(s, fpdenormal, std::move(fp_a));
fp_b = handle_subnormal(s, fpdenormal, std::move(fp_b));
fp_c = handle_subnormal(s, fpdenormal, std::move(fp_c));
if (nary >= 2)
fp_b = handle_subnormal(s, fpdenormal, std::move(fp_b));
if (nary >= 3)
fp_c = handle_subnormal(s, fpdenormal, std::move(fp_c));
}

function<expr(const expr&)> fn_rm
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