1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
// SPDX-License-Identifier: GPL-3.0-or-later
#include "rcc/CodeGen/GlobalISel/RegBankSelect.h"
#include "GISelMITest.h"
#include "rcc/Target/RISCV/RISCVCodeGen.h"
#include <cstdint>
namespace {
using rcc::test::buildConstant;
using rcc::test::createFixture;
using rcc::test::createRegister;
using rcc::test::TestContext;
void testBankConflict(TestContext &Context) {
auto Target = rcc::riscv::createTargetDescription();
auto Fixture = createFixture(Context, "pipeline_bank_conflict", 4);
Context.expect(Target.has_value() && Fixture.Function != nullptr && Fixture.Entry != nullptr,
"bank conflict fixture must be complete");
if (!Target || !Fixture.Function || Fixture.Entry == nullptr)
return;
const rcc::Register Value = createRegister(Context, *Fixture.Function, 64);
Context.expect(
Fixture.Function->registerInfo()
.setRegisterBank(Value, rcc::RegisterBankID::fromValue(
static_cast<std::uint32_t>(rcc::riscv::RegisterBank::FPR)))
.has_value(),
"conflicting bank assignment must be constructible");
Fixture.Function->properties() = {rcc::MachineFunctionProperty::Legalized};
rcc::RegBankSelect Pass(rcc::riscv::registerBankInfo());
rcc::MachineAnalysisManager Analyses;
auto Result = Pass.run(*Fixture.Function, *Target, Analyses);
Context.expect(!Result && Result.error().code() == rcc::ErrorCode::VerificationError,
"bank selection must reject a conflicting pre-existing bank");
auto Info = Fixture.Function->registerInfo().virtualRegisterInfo(Value);
Context.expect(Info && Info->get().Bank, "failed bank selection must preserve a bank assignment");
if (!Info || !Info->get().Bank)
return;
const rcc::RegisterBankID Bank = Info->get().Bank.value_or(rcc::RegisterBankID{});
Context.expect(Bank == rcc::RegisterBankID::fromValue(
static_cast<std::uint32_t>(rcc::riscv::RegisterBank::FPR)),
"failed bank selection must preserve the original bank assignment");
}
void testBankClassOnlyChange(TestContext &Context) {
auto Target = rcc::riscv::createTargetDescription();
auto Fixture = createFixture(Context, "pipeline_bank_class", 5);
Context.expect(Target.has_value() && Fixture.Function != nullptr && Fixture.Entry != nullptr,
"bank class fixture must be complete");
if (!Target || !Fixture.Function || Fixture.Entry == nullptr)
return;
const rcc::Register Value = createRegister(Context, *Fixture.Function, 64);
rcc::MachineIRBuilder Builder(*Fixture.Function, *Target);
if (Value.isNoRegister() || !Builder.setInsertPoint(*Fixture.Entry) ||
!buildConstant(Context, Builder, Value, 7))
return;
const auto GPR =
rcc::RegisterBankID::fromValue(static_cast<std::uint32_t>(rcc::riscv::RegisterBank::GPR));
Context.expect(Fixture.Function->registerInfo().setRegisterBank(Value, GPR).has_value(),
"pre-existing GPR bank must be assignable");
Fixture.Function->properties() = {rcc::MachineFunctionProperty::Legalized};
rcc::RegBankSelect Pass(rcc::riscv::registerBankInfo());
rcc::MachineAnalysisManager Analyses;
auto Result = Pass.run(*Fixture.Function, *Target, Analyses);
Context.expect(Result.has_value() && Result->Changed &&
Result->Changes.has(rcc::MachinePassChange::Registers),
"bank selection must report a class-only register change");
auto Info = Fixture.Function->registerInfo().virtualRegisterInfo(Value);
Context.expect(Info && Info->get().Bank && Info->get().RegClass,
"bank selection must publish both bank and class");
if (!Info || !Info->get().RegClass)
return;
Context.expect(Info->get().RegClass.value_or(rcc::RegisterClassID{}) ==
rcc::RegisterClassID::fromValue(
static_cast<std::uint32_t>(rcc::riscv::RegisterClass::GPR)),
"i64 GPR bank must select the GPR class");
}
} // namespace
int main() {
TestContext Context;
testBankConflict(Context);
testBankClassOnlyChange(Context);
return Context.result();
}
|
