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Add test for isolated GetNZCVFromOp

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This commit is contained in:
Liam 2022-11-16 16:50:33 -05:00
parent 16101049f3
commit 21b4211414
2 changed files with 59 additions and 3 deletions
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31
src/dynarmic/backend/arm64/emit_arm64.cpp
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@ -69,9 +69,34 @@ void EmitIR<IR::Opcode::GetGEFromOp>(oaknut::CodeGenerator&, EmitContext& ctx, I
}
template<>
void EmitIR<IR::Opcode::GetNZCVFromOp>(oaknut::CodeGenerator&, EmitContext& ctx, IR::Inst* inst) {
[[maybe_unused]] auto args = ctx.reg_alloc.GetArgumentInfo(inst);
ASSERT(ctx.reg_alloc.IsValueLive(inst));
void EmitIR<IR::Opcode::GetNZCVFromOp>(oaknut::CodeGenerator& code, EmitContext& ctx, IR::Inst* inst) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
if (ctx.reg_alloc.IsValueLive(inst)) {
return;
}
switch (args[0].GetType()) {
case IR::Type::U32: {
auto Wvalue = ctx.reg_alloc.ReadW(args[0]);
auto flags = ctx.reg_alloc.WriteFlags(inst);
RegAlloc::Realize(Wvalue, flags);
code.CMP(*Wvalue, WZR.toW());
break;
}
case IR::Type::U64: {
auto Xvalue = ctx.reg_alloc.ReadX(args[0]);
auto flags = ctx.reg_alloc.WriteFlags(inst);
RegAlloc::Realize(Xvalue, flags);
code.CMP(*Xvalue, XZR.toX());
break;
}
default:
ASSERT_FALSE("Invalid type for GetNZCVFromOp");
break;
}
}
template<>

31
tests/A64/a64.cpp
View file

@ -1041,6 +1041,37 @@ TEST_CASE("A64: EXTR", "[a64]") {
REQUIRE(jit.GetRegister(23) == 0);
}
TEST_CASE("A64: Isolated GetNZCVFromOp", "[a64]") {
A64TestEnv env;
A64::Jit jit{A64::UserConfig{&env}};
env.code_mem.emplace_back(0xaa1f03f5); // MOV X21, XZR
env.code_mem.emplace_back(0x912a02da); // ADD X26, X22, #0xa80
env.code_mem.emplace_back(0x913662dc); // ADD X28, X22, #0xd98
env.code_mem.emplace_back(0x320003e8); // MOV W8, #1
env.code_mem.emplace_back(0xa9006bfc); // STP X28, X26, [SP]
env.code_mem.emplace_back(0x7200011f); // TST W8, #1
env.code_mem.emplace_back(0xf94007e8); // LDR X8, [SP, #8]
env.code_mem.emplace_back(0x321e03e3); // MOV W3, #4
env.code_mem.emplace_back(0xaa1303e2); // MOV X2, X19
env.code_mem.emplace_back(0x9a881357); // CSEL X23, X26, X8, NE
env.code_mem.emplace_back(0xf94003e8); // LDR X8, [SP]
env.code_mem.emplace_back(0xaa1703e0); // MOV X0, X23
env.code_mem.emplace_back(0x9a881396); // CSEL X22, X28, X8, NE
env.code_mem.emplace_back(0x92407ea8); // AND X8, X21, #0xffffffff
env.code_mem.emplace_back(0x1ac8269b); // LSR W27, W20, W8
env.code_mem.emplace_back(0x0b1b0768); // ADD W8, W27, W27, LSL #1
env.code_mem.emplace_back(0x937f7d01); // SBFIZ X1, X8, #1, #32
env.code_mem.emplace_back(0x2a1f03e4); // MOV W4, WZR
env.code_mem.emplace_back(0x531e7779); // LSL W25, W27, #2
env.code_mem.emplace_back(0x14000000); // B .
jit.SetPC(0);
env.ticks_left = 20;
jit.Run();
}
TEST_CASE("A64: Optimization failure when folding ADD", "[a64]") {
A64TestEnv env;
A64::Jit jit{A64::UserConfig{&env}};