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[A64/Vector] Handle constant converts and shamt types

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- Load constant vectors before convert ops

- Use size_t comparisons for lvsl/lvsr tables
This commit is contained in:
Will Martin
2026-01-21 11:15:18 +09:00
parent a83bd019a4
commit 5f1da79eb0
1 changed files with 14 additions and 6 deletions
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src/xenia/cpu/backend/a64/a64_seq_vector.cc
+14 -6
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@@ -32,10 +32,14 @@ struct VECTOR_CONVERT_I2F
: Sequence<VECTOR_CONVERT_I2F,
I<OPCODE_VECTOR_CONVERT_I2F, V128Op, V128Op>> {
static void Emit(A64Emitter& e, const EmitArgType& i) {
const QReg src = i.src1.is_constant ? Q0 : i.src1;
if (i.src1.is_constant) {
e.LoadConstantV(src, i.src1.constant());
}
if (i.instr->flags & ARITHMETIC_UNSIGNED) {
e.UCVTF(i.dest.reg().S4(), i.src1.reg().S4());
e.UCVTF(i.dest.reg().S4(), src.S4());
} else {
e.SCVTF(i.dest.reg().S4(), i.src1.reg().S4());
e.SCVTF(i.dest.reg().S4(), src.S4());
}
}
};
@@ -48,10 +52,14 @@ struct VECTOR_CONVERT_F2I
: Sequence<VECTOR_CONVERT_F2I,
I<OPCODE_VECTOR_CONVERT_F2I, V128Op, V128Op>> {
static void Emit(A64Emitter& e, const EmitArgType& i) {
const QReg src = i.src1.is_constant ? Q0 : i.src1;
if (i.src1.is_constant) {
e.LoadConstantV(src, i.src1.constant());
}
if (i.instr->flags & ARITHMETIC_UNSIGNED) {
e.FCVTZU(i.dest.reg().S4(), i.src1.reg().S4());
e.FCVTZU(i.dest.reg().S4(), src.S4());
} else {
e.FCVTZS(i.dest.reg().S4(), i.src1.reg().S4());
e.FCVTZS(i.dest.reg().S4(), src.S4());
}
}
};
@@ -83,7 +91,7 @@ struct LOAD_VECTOR_SHL_I8
static void Emit(A64Emitter& e, const EmitArgType& i) {
if (i.src1.is_constant) {
auto sh = i.src1.constant();
assert_true(sh < xe::countof(lvsl_table));
assert_true(static_cast<size_t>(sh) < xe::countof(lvsl_table));
e.MOV(X0, reinterpret_cast<uintptr_t>(&lvsl_table[sh]));
e.LDR(i.dest, X0);
} else {
@@ -121,7 +129,7 @@ struct LOAD_VECTOR_SHR_I8
static void Emit(A64Emitter& e, const EmitArgType& i) {
if (i.src1.is_constant) {
auto sh = i.src1.constant();
assert_true(sh < xe::countof(lvsr_table));
assert_true(static_cast<size_t>(sh) < xe::countof(lvsr_table));
e.MOV(X0, reinterpret_cast<uintptr_t>(&lvsr_table[sh]));
e.LDR(i.dest, X0);
} else {