From b74d5520f99960eec5aca2765df4dcebab8dff11 Mon Sep 17 00:00:00 2001 From: MerryMage Date: Mon, 23 Jul 2018 22:02:46 +0100 Subject: [PATCH] A64: Implement FRSQRTS (scalar), single/double variant --- src/frontend/A64/decoder/a64.inc | 2 +- .../A64/translate/impl/simd_scalar_three_same.cpp | 11 +++++++++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc index dd0b6dd2..aeb92129 100644 --- a/src/frontend/A64/decoder/a64.inc +++ b/src/frontend/A64/decoder/a64.inc @@ -345,7 +345,7 @@ INST(FCMEQ_reg_2, "FCMEQ (register)", "01011 //INST(FRECPS_1, "FRECPS", "01011110010mmmmm001111nnnnnddddd") //INST(FRECPS_2, "FRECPS", "010111100z1mmmmm111111nnnnnddddd") //INST(FRSQRTS_1, "FRSQRTS", "01011110110mmmmm001111nnnnnddddd") -//INST(FRSQRTS_2, "FRSQRTS", "010111101z1mmmmm111111nnnnnddddd") +INST(FRSQRTS_2, "FRSQRTS", "010111101z1mmmmm111111nnnnnddddd") //INST(FCMGE_reg_1, "FCMGE (register)", "01111110010mmmmm001001nnnnnddddd") INST(FCMGE_reg_2, "FCMGE (register)", "011111100z1mmmmm111001nnnnnddddd") //INST(FACGE_1, "FACGE", "01111110010mmmmm001011nnnnnddddd") diff --git a/src/frontend/A64/translate/impl/simd_scalar_three_same.cpp b/src/frontend/A64/translate/impl/simd_scalar_three_same.cpp index 3a3e94a2..62ef27e1 100644 --- a/src/frontend/A64/translate/impl/simd_scalar_three_same.cpp +++ b/src/frontend/A64/translate/impl/simd_scalar_three_same.cpp @@ -181,6 +181,17 @@ bool TranslatorVisitor::FABD_2(bool sz, Vec Vm, Vec Vn, Vec Vd) { return true; } +bool TranslatorVisitor::FRSQRTS_2(bool sz, Vec Vm, Vec Vn, Vec Vd) { + const size_t esize = sz ? 64 : 32; + + const IR::U32U64 operand1 = V_scalar(esize, Vn); + const IR::U32U64 operand2 = V_scalar(esize, Vm); + const IR::U32U64 result = ir.FPRSqrtStepFused(operand1, operand2); + + V_scalar(esize, Vd, result); + return true; +} + bool TranslatorVisitor::FACGE_2(bool sz, Vec Vm, Vec Vn, Vec Vd) { return ScalarFPCompareRegister(*this, sz, Vm, Vn, Vd, FPComparisonType::AbsoluteGE); }