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[IR] Adding const_value_op_iterator for IR/User.h 

const value op iterator is missing from User.h class.

Differential Revision: https://reviews.llvm.org/D28464

llvm-svn: 291443
This commit is contained in:
Mohammed Agabaria 2017-01-09 14:00:57 +00:00
parent 7d6285fb1c
commit e0e7cdf36c
2 changed files with 45 additions and 0 deletions
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20
llvm/include/llvm/IR/User.h
View File

@ -238,6 +238,26 @@ public:
return make_range(value_op_begin(), value_op_end());
}
struct const_value_op_iterator
: iterator_adaptor_base<const_value_op_iterator, const_op_iterator,
std::random_access_iterator_tag, const Value *,
ptrdiff_t, const Value *, const Value *> {
explicit const_value_op_iterator(const Use *U = nullptr) :
iterator_adaptor_base(U) {}
const Value *operator*() const { return *I; }
const Value *operator->() const { return operator*(); }
};
const_value_op_iterator value_op_begin() const {
return const_value_op_iterator(op_begin());
}
const_value_op_iterator value_op_end() const {
return const_value_op_iterator(op_end());
}
iterator_range<const_value_op_iterator> operand_values() const {
return make_range(value_op_begin(), value_op_end());
}
/// \brief Drop all references to operands.
///
/// This function is in charge of "letting go" of all objects that this User

25
llvm/unittests/IR/UserTest.cpp
View File

@ -84,6 +84,22 @@ TEST(UserTest, ValueOpIteration) {
EXPECT_FALSE(P.value_op_begin() >= P.value_op_end());
EXPECT_EQ(10, std::distance(P.value_op_begin(), P.value_op_end()));
// const value op iteration
const PHINode *IP = &P;
EXPECT_TRUE(IP->value_op_begin() == IP->value_op_begin());
EXPECT_FALSE(IP->value_op_begin() == IP->value_op_end());
EXPECT_TRUE(IP->value_op_begin() != IP->value_op_end());
EXPECT_FALSE(IP->value_op_end() != IP->value_op_end());
EXPECT_TRUE(IP->value_op_begin() < IP->value_op_end());
EXPECT_FALSE(IP->value_op_begin() < IP->value_op_begin());
EXPECT_TRUE(IP->value_op_end() > IP->value_op_begin());
EXPECT_FALSE(IP->value_op_begin() > IP->value_op_begin());
EXPECT_TRUE(IP->value_op_begin() <= IP->value_op_begin());
EXPECT_FALSE(IP->value_op_end() <= IP->value_op_begin());
EXPECT_TRUE(IP->value_op_begin() >= IP->value_op_begin());
EXPECT_FALSE(IP->value_op_begin() >= IP->value_op_end());
EXPECT_EQ(10, std::distance(IP->value_op_begin(), IP->value_op_end()));
User::value_op_iterator I = P.value_op_begin();
I += 3;
EXPECT_EQ(std::next(P.value_op_begin(), 3), I);
@ -91,6 +107,15 @@ TEST(UserTest, ValueOpIteration) {
I++;
EXPECT_EQ(P.getOperand(6), I[2]);
EXPECT_EQ(P.value_op_end(), (I - 2) + 8);
// const value op
User::const_value_op_iterator CI = IP->value_op_begin();
CI += 3;
EXPECT_EQ(std::next(IP->value_op_begin(), 3), CI);
EXPECT_EQ(IP->getOperand(3), *CI);
CI++;
EXPECT_EQ(IP->getOperand(6), CI[2]);
EXPECT_EQ(IP->value_op_end(), (CI - 2) + 8);
}
TEST(UserTest, PersonalityUser) {