119 lines
4.2 KiB
C++
119 lines
4.2 KiB
C++
//===- llvm/unittest/CodeGen/AllocationOrderTest.cpp - AllocationOrder tests =//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "../lib/CodeGen/AllocationOrder.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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std::vector<MCPhysReg> loadOrder(const AllocationOrder &O, unsigned Limit = 0) {
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std::vector<MCPhysReg> Ret;
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if (Limit == 0)
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for (auto R : O)
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Ret.push_back(R);
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else
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for (auto I = O.begin(), E = O.getOrderLimitEnd(Limit); I != E; ++I)
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Ret.push_back(*I);
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return Ret;
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}
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} // namespace
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TEST(AllocationOrderTest, Basic) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {4, 5, 6, 7};
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AllocationOrder O(std::move(Hints), Order, false);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4, 5, 6, 7}), loadOrder(O));
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}
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TEST(AllocationOrderTest, Duplicates) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {4, 1, 5, 6};
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AllocationOrder O(std::move(Hints), Order, false);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4, 5, 6}), loadOrder(O));
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}
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TEST(AllocationOrderTest, HardHints) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {4, 5, 6, 7};
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AllocationOrder O(std::move(Hints), Order, true);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3}), loadOrder(O));
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}
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TEST(AllocationOrderTest, LimitsBasic) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {4, 5, 6, 7};
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AllocationOrder O(std::move(Hints), Order, false);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4, 5, 6, 7}), loadOrder(O, 0));
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4}), loadOrder(O, 1));
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EXPECT_EQ(O.end(), O.getOrderLimitEnd(0));
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}
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TEST(AllocationOrderTest, LimitsDuplicates) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {4, 1, 5, 6};
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AllocationOrder O(std::move(Hints), Order, false);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4}), loadOrder(O, 1));
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4}), loadOrder(O, 2));
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4, 5}), loadOrder(O, 3));
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4, 5, 6}), loadOrder(O, 4));
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}
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TEST(AllocationOrderTest, LimitsHardHints) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {4, 1, 5, 6};
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AllocationOrder O(std::move(Hints), Order, true);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3}), loadOrder(O, 1));
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}
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TEST(AllocationOrderTest, DuplicateIsFirst) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {1, 4, 5, 6};
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AllocationOrder O(std::move(Hints), Order, false);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4, 5, 6}), loadOrder(O));
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}
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TEST(AllocationOrderTest, DuplicateIsFirstWithLimits) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {1, 4, 5, 6};
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AllocationOrder O(std::move(Hints), Order, false);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3}), loadOrder(O, 1));
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4}), loadOrder(O, 2));
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4, 5}), loadOrder(O, 3));
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}
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TEST(AllocationOrderTest, NoHints) {
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SmallVector<MCPhysReg, 16> Hints;
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SmallVector<MCPhysReg, 16> Order = {1, 2, 3, 4};
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AllocationOrder O(std::move(Hints), Order, false);
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3, 4}), loadOrder(O));
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2}), loadOrder(O, 2));
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EXPECT_EQ((std::vector<MCPhysReg>{1, 2, 3}), loadOrder(O, 3));
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}
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TEST(AllocationOrderTest, IsHintTest) {
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SmallVector<MCPhysReg, 16> Hints = {1, 2, 3};
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SmallVector<MCPhysReg, 16> Order = {4, 1, 5, 6};
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AllocationOrder O(std::move(Hints), Order, false);
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auto I = O.begin();
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auto V = *I;
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EXPECT_TRUE(I.isHint());
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EXPECT_EQ(V, 1U);
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++I;
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EXPECT_TRUE(I.isHint());
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++I;
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EXPECT_TRUE(I.isHint());
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V = *(++I);
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EXPECT_FALSE(I.isHint());
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EXPECT_EQ(V, 4U);
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V = *(++I);
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EXPECT_TRUE(O.isHint(1));
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EXPECT_FALSE(I.isHint());
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EXPECT_EQ(V, 5U);
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}
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