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A64: Implement half-precision variant of FRSQRTE's scalar variant

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Lioncash 2019-04-13 18:38:39 -04:00 committed by MerryMage
parent 037acb17b9
commit 77c84bcf9b
2 changed files with 11 additions and 1 deletions
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2
src/frontend/A64/decoder/a64.inc
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@ -438,7 +438,7 @@ INST(FCMLE_2, "FCMLE (zero)", "01111
INST(FCVTPU_2, "FCVTPU (vector)", "011111101z100001101010nnnnnddddd")
//INST(FCVTZU_int_1, "FCVTZU (vector, integer)", "0111111011111001101110nnnnnddddd")
INST(FCVTZU_int_2, "FCVTZU (vector, integer)", "011111101z100001101110nnnnnddddd")
//INST(FRSQRTE_1, "FRSQRTE", "0111111011111001110110nnnnnddddd")
INST(FRSQRTE_1, "FRSQRTE", "0111111011111001110110nnnnnddddd")
INST(FRSQRTE_2, "FRSQRTE", "011111101z100001110110nnnnnddddd")
// Data Processing - FP and SIMD - Scalar three same extra

10
src/frontend/A64/translate/impl/simd_scalar_two_register_misc.cpp
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@ -200,6 +200,16 @@ bool TranslatorVisitor::FRECPX_2(bool sz, Vec Vn, Vec Vd) {
return true;
}
bool TranslatorVisitor::FRSQRTE_1(Vec Vn, Vec Vd) {
const size_t esize = 16;
const IR::U16 operand = V_scalar(esize, Vn);
const IR::U16 result = ir.FPRSqrtEstimate(operand);
V_scalar(esize, Vd, result);
return true;
}
bool TranslatorVisitor::FRSQRTE_2(bool sz, Vec Vn, Vec Vd) {
const size_t esize = sz ? 64 : 32;