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A64: Implement scalar variants of CMEQ, CMGT, and CMGE zero comparison instructions

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These can trivially use the ScalarCompare helper function.
This commit is contained in:
Lioncash 2018-04-15 06:36:37 -04:00 committed by MerryMage
parent 3ad4e547e4
commit 718f3e9bb4
2 changed files with 29 additions and 10 deletions
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6
src/frontend/A64/decoder/a64.inc
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@ -407,14 +407,14 @@ INST(UCVTF_int_2, "UCVTF (vector, integer)", "01111
// Data Processing - FP and SIMD - Scalar two-register misc
//INST(SUQADD_1, "SUQADD", "01011110zz100000001110nnnnnddddd")
//INST(SQABS_1, "SQABS", "01011110zz100000011110nnnnnddddd")
//INST(CMGT_zero_1, "CMGT (zero)", "01011110zz100000100010nnnnnddddd")
//INST(CMEQ_zero_1, "CMEQ (zero)", "01011110zz100000100110nnnnnddddd")
INST(CMGT_zero_1, "CMGT (zero)", "01011110zz100000100010nnnnnddddd")
INST(CMEQ_zero_1, "CMEQ (zero)", "01011110zz100000100110nnnnnddddd")
//INST(CMLT_1, "CMLT (zero)", "01011110zz100000101010nnnnnddddd")
//INST(ABS_1, "ABS", "01011110zz100000101110nnnnnddddd")
//INST(SQXTN_1, "SQXTN, SQXTN2", "01011110zz100001010010nnnnnddddd")
//INST(USQADD_1, "USQADD", "01111110zz100000001110nnnnnddddd")
//INST(SQNEG_1, "SQNEG", "01111110zz100000011110nnnnnddddd")
//INST(CMGE_zero_1, "CMGE (zero)", "01111110zz100000100010nnnnnddddd")
INST(CMGE_zero_1, "CMGE (zero)", "01111110zz100000100010nnnnnddddd")
//INST(CMLE_1, "CMLE (zero)", "01111110zz100000100110nnnnnddddd")
INST(NEG_1, "NEG (vector)", "01111110zz100000101110nnnnnddddd")
//INST(SQXTUN_1, "SQXTUN, SQXTUN2", "01111110zz100001001010nnnnnddddd")

33
src/frontend/A64/translate/impl/simd_scalar_three_same.cpp
View file

@ -4,6 +4,7 @@
* General Public License version 2 or any later version.
*/
#include <boost/optional.hpp>
#include "common/bit_util.h"
#include "frontend/A64/translate/impl/impl.h"
@ -17,7 +18,13 @@ enum class ComparisonType {
HS,
};
bool ScalarCompare(TranslatorVisitor& v, Imm<2> size, Vec Vm, Vec Vn, Vec Vd, ComparisonType type) {
enum class ComparisonVariant {
Register,
Zero,
};
bool ScalarCompare(TranslatorVisitor& v, Imm<2> size, boost::optional<Vec> Vm, Vec Vn, Vec Vd,
ComparisonType type, ComparisonVariant variant) {
if (size != 0b11) {
return v.ReservedValue();
}
@ -26,7 +33,7 @@ bool ScalarCompare(TranslatorVisitor& v, Imm<2> size, Vec Vm, Vec Vn, Vec Vd, Co
const size_t datasize = 64;
const IR::U128 operand1 = v.V(datasize, Vn);
const IR::U128 operand2 = v.V(datasize, Vm);
const IR::U128 operand2 = variant == ComparisonVariant::Register ? v.V(datasize, Vm.get()) : v.ir.ZeroVector();
const IR::U128 result = [&] {
switch (type) {
@ -64,23 +71,35 @@ bool TranslatorVisitor::ADD_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
}
bool TranslatorVisitor::CMEQ_reg_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::EQ);
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::EQ, ComparisonVariant::Register);
}
bool TranslatorVisitor::CMEQ_zero_1(Imm<2> size, Vec Vn, Vec Vd) {
return ScalarCompare(*this, size, {}, Vn, Vd, ComparisonType::EQ, ComparisonVariant::Zero);
}
bool TranslatorVisitor::CMGE_reg_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::GE);
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::GE, ComparisonVariant::Register);
}
bool TranslatorVisitor::CMGE_zero_1(Imm<2> size, Vec Vn, Vec Vd) {
return ScalarCompare(*this, size, {}, Vn, Vd, ComparisonType::GE, ComparisonVariant::Zero);
}
bool TranslatorVisitor::CMGT_reg_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::GT);
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::GT, ComparisonVariant::Register);
}
bool TranslatorVisitor::CMGT_zero_1(Imm<2> size, Vec Vn, Vec Vd) {
return ScalarCompare(*this, size, {}, Vn, Vd, ComparisonType::GT, ComparisonVariant::Zero);
}
bool TranslatorVisitor::CMHI_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::HI);
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::HI, ComparisonVariant::Register);
}
bool TranslatorVisitor::CMHS_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::HS);
return ScalarCompare(*this, size, Vm, Vn, Vd, ComparisonType::HS, ComparisonVariant::Register);
}
bool TranslatorVisitor::SUB_1(Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {