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| author | Duncan P. N. Exon Smith <dexonsmith@apple.com> | 2015-02-18 23:17:51 +0000 |
|---|---|---|
| committer | Duncan P. N. Exon Smith <dexonsmith@apple.com> | 2015-02-18 23:17:51 +0000 |
| commit | 5c9a17732bf07b2de850bd03e64c1dfa4030a50f (patch) | |
| tree | 902d7e8be001b1062d1b119d62fca51aa87ca631 /llvm/unittests/IR/MetadataTest.cpp | |
| parent | 7bb0738d825d0f8e0e3f36f945e9ae47c9b904f0 (diff) | |
| download | bcm5719-llvm-5c9a17732bf07b2de850bd03e64c1dfa4030a50f.tar.gz bcm5719-llvm-5c9a17732bf07b2de850bd03e64c1dfa4030a50f.zip | |
IR: Allow MDSubrange to have 'count: -1'
It turns out that `count: -1` is a special value indicating an empty
array, such as `Values` in:
struct T {
unsigned Count;
int Values[];
};
Handle it.
llvm-svn: 229769
Diffstat (limited to 'llvm/unittests/IR/MetadataTest.cpp')
| -rw-r--r-- | llvm/unittests/IR/MetadataTest.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/unittests/IR/MetadataTest.cpp b/llvm/unittests/IR/MetadataTest.cpp index fc2ed73d89c..b6ee46a5d7b 100644 --- a/llvm/unittests/IR/MetadataTest.cpp +++ b/llvm/unittests/IR/MetadataTest.cpp @@ -670,6 +670,14 @@ TEST_F(MDSubrangeTest, get) { EXPECT_EQ(N, MDNode::replaceWithUniqued(std::move(Temp))); } +TEST_F(MDSubrangeTest, getEmptyArray) { + auto *N = MDSubrange::get(Context, -1, 0); + EXPECT_EQ(dwarf::DW_TAG_subrange_type, N->getTag()); + EXPECT_EQ(-1, N->getCount()); + EXPECT_EQ(0, N->getLo()); + EXPECT_EQ(N, MDSubrange::get(Context, -1, 0)); +} + typedef MetadataTest MDEnumeratorTest; TEST_F(MDEnumeratorTest, get) { |
