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I noticed in passing that the Metadata getIfExists method was creating a new

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node and returning it if one didn't exist.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153798 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2012-03-31 08:20:11 +00:00
parent 6173ed95da
commit 4000afe712
2 changed files with 11 additions and 4 deletions
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8
lib/VMCore/Metadata.cpp
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@ -205,11 +205,11 @@ MDNode *MDNode::getMDNode(LLVMContext &Context, ArrayRef<Value*> Vals,
ID.AddPointer(Vals[i]);
void *InsertPoint;
MDNode *N = NULL;
if ((N = pImpl->MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint)))
MDNode *N = pImpl->MDNodeSet.FindNodeOrInsertPos(ID, InsertPoint);
if (N || !Insert)
return N;
bool isFunctionLocal = false;
switch (FL) {
case FL_Unknown:

7
unittests/VMCore/MetadataTest.cpp
View File

@ -90,13 +90,20 @@ TEST_F(MDNodeTest, Simple) {
MDNode *n1 = MDNode::get(Context, V);
Value *const c1 = n1;
MDNode *n2 = MDNode::get(Context, c1);
Value *const c2 = n2;
MDNode *n3 = MDNode::get(Context, V);
MDNode *n4 = MDNode::getIfExists(Context, V);
MDNode *n5 = MDNode::getIfExists(Context, c1);
MDNode *n6 = MDNode::getIfExists(Context, c2);
EXPECT_NE(n1, n2);
#ifdef ENABLE_MDNODE_UNIQUING
EXPECT_EQ(n1, n3);
#else
(void) n3;
#endif
EXPECT_EQ(n4, n1);
EXPECT_EQ(n5, n2);
EXPECT_EQ(n6, (Value*)0);
EXPECT_EQ(3u, n1->getNumOperands());
EXPECT_EQ(s1, n1->getOperand(0));