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//===- llvm/unittest/IR/UserTest.cpp - User unit tests --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/AsmParser/Parser.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/User.h"
#include "llvm/IR/Instructions.h"
#include "llvm/Support/SourceMgr.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(UserTest, ValueOpIteration) {
LLVMContext C;
const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n"
"entry:\n"
" switch i32 undef, label %s0\n"
" [ i32 1, label %s1\n"
" i32 2, label %s2\n"
" i32 3, label %s3\n"
" i32 4, label %s4\n"
" i32 5, label %s5\n"
" i32 6, label %s6\n"
" i32 7, label %s7\n"
" i32 8, label %s8\n"
" i32 9, label %s9 ]\n"
"\n"
"s0:\n"
" br label %exit\n"
"s1:\n"
" br label %exit\n"
"s2:\n"
" br label %exit\n"
"s3:\n"
" br label %exit\n"
"s4:\n"
" br label %exit\n"
"s5:\n"
" br label %exit\n"
"s6:\n"
" br label %exit\n"
"s7:\n"
" br label %exit\n"
"s8:\n"
" br label %exit\n"
"s9:\n"
" br label %exit\n"
"\n"
"exit:\n"
" %phi = phi i32 [ 0, %s0 ], [ 1, %s1 ],\n"
" [ 2, %s2 ], [ 3, %s3 ],\n"
" [ 4, %s4 ], [ 5, %s5 ],\n"
" [ 6, %s6 ], [ 7, %s7 ],\n"
" [ 8, %s8 ], [ 9, %s9 ]\n"
" ret void\n"
"}\n";
SMDiagnostic Err;
Module *M = ParseAssemblyString(ModuleString, nullptr, Err, C);
Function *F = M->getFunction("f");
BasicBlock &ExitBB = F->back();
PHINode &P = cast<PHINode>(ExitBB.front());
EXPECT_TRUE(P.value_op_begin() == P.value_op_begin());
EXPECT_FALSE(P.value_op_begin() == P.value_op_end());
EXPECT_TRUE(P.value_op_begin() != P.value_op_end());
EXPECT_FALSE(P.value_op_end() != P.value_op_end());
EXPECT_TRUE(P.value_op_begin() < P.value_op_end());
EXPECT_FALSE(P.value_op_begin() < P.value_op_begin());
EXPECT_TRUE(P.value_op_end() > P.value_op_begin());
EXPECT_FALSE(P.value_op_begin() > P.value_op_begin());
EXPECT_TRUE(P.value_op_begin() <= P.value_op_begin());
EXPECT_FALSE(P.value_op_end() <= P.value_op_begin());
EXPECT_TRUE(P.value_op_begin() >= P.value_op_begin());
EXPECT_FALSE(P.value_op_begin() >= P.value_op_end());
EXPECT_EQ(10, std::distance(P.value_op_begin(), P.value_op_end()));
User::value_op_iterator I = P.value_op_begin();
I += 3;
EXPECT_EQ(std::next(P.value_op_begin(), 3), I);
EXPECT_EQ(P.getOperand(3), *I);
I++;
EXPECT_EQ(P.getOperand(6), I[2]);
EXPECT_EQ(P.value_op_end(), (I - 2) + 8);
}
} // end anonymous namespace
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