111 lines · cpp
1//===- llvm/unittest/IR/UseTest.cpp - Use unit tests ----------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/AsmParser/Parser.h"10#include "llvm/IR/Function.h"11#include "llvm/IR/LLVMContext.h"12#include "llvm/IR/Module.h"13#include "llvm/IR/User.h"14#include "llvm/Support/Format.h"15#include "llvm/Support/SourceMgr.h"16#include "gtest/gtest.h"17 18using namespace llvm;19 20namespace {21 22TEST(UseTest, sort) {23 LLVMContext C;24 25 const char *ModuleString = "define void @f(i32 %x) {\n"26 "entry:\n"27 " %v0 = add i32 %x, 0\n"28 " %v2 = add i32 %x, 2\n"29 " %v5 = add i32 %x, 5\n"30 " %v1 = add i32 %x, 1\n"31 " %v3 = add i32 %x, 3\n"32 " %v7 = add i32 %x, 7\n"33 " %v6 = add i32 %x, 6\n"34 " %v4 = add i32 %x, 4\n"35 " ret void\n"36 "}\n";37 SMDiagnostic Err;38 char vnbuf[8];39 std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);40 Function *F = M->getFunction("f");41 ASSERT_TRUE(F);42 ASSERT_TRUE(F->arg_begin() != F->arg_end());43 Argument &X = *F->arg_begin();44 ASSERT_EQ("x", X.getName());45 46 X.sortUseList([](const Use &L, const Use &R) {47 return L.getUser()->getName() < R.getUser()->getName();48 });49 unsigned I = 0;50 for (User *U : X.users()) {51 format("v%u", I++).snprint(vnbuf, sizeof(vnbuf));52 EXPECT_EQ(vnbuf, U->getName());53 }54 ASSERT_EQ(8u, I);55 56 X.sortUseList([](const Use &L, const Use &R) {57 return L.getUser()->getName() > R.getUser()->getName();58 });59 I = 0;60 for (User *U : X.users()) {61 format("v%u", (7 - I++)).snprint(vnbuf, sizeof(vnbuf));62 EXPECT_EQ(vnbuf, U->getName());63 }64 ASSERT_EQ(8u, I);65}66 67TEST(UseTest, reverse) {68 LLVMContext C;69 70 const char *ModuleString = "define void @f(i32 %x) {\n"71 "entry:\n"72 " %v0 = add i32 %x, 0\n"73 " %v2 = add i32 %x, 2\n"74 " %v5 = add i32 %x, 5\n"75 " %v1 = add i32 %x, 1\n"76 " %v3 = add i32 %x, 3\n"77 " %v7 = add i32 %x, 7\n"78 " %v6 = add i32 %x, 6\n"79 " %v4 = add i32 %x, 4\n"80 " ret void\n"81 "}\n";82 SMDiagnostic Err;83 char vnbuf[8];84 std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);85 Function *F = M->getFunction("f");86 ASSERT_TRUE(F);87 ASSERT_TRUE(F->arg_begin() != F->arg_end());88 Argument &X = *F->arg_begin();89 ASSERT_EQ("x", X.getName());90 91 X.sortUseList([](const Use &L, const Use &R) {92 return L.getUser()->getName() < R.getUser()->getName();93 });94 unsigned I = 0;95 for (User *U : X.users()) {96 format("v%u", I++).snprint(vnbuf, sizeof(vnbuf));97 EXPECT_EQ(vnbuf, U->getName());98 }99 ASSERT_EQ(8u, I);100 101 X.reverseUseList();102 I = 0;103 for (User *U : X.users()) {104 format("v%u", (7 - I++)).snprint(vnbuf, sizeof(vnbuf));105 EXPECT_EQ(vnbuf, U->getName());106 }107 ASSERT_EQ(8u, I);108}109 110} // end anonymous namespace111