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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-13 19:56:28 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-07-13 19:56:28 +0000 |
| commit | fc4b8b8e801cb8dd065919af58c46d3a230d2e0b (patch) | |
| tree | 5e103d5ba3b80b196765752aa4cd623f6e03bdea /llvm/lib/CodeGen/LiveInterval.cpp | |
| parent | 58cd65f2febc4bef943b191ae756121bbaf1cd6e (diff) | |
| download | bcm5719-llvm-fc4b8b8e801cb8dd065919af58c46d3a230d2e0b.tar.gz bcm5719-llvm-fc4b8b8e801cb8dd065919af58c46d3a230d2e0b.zip | |
Add an assertion to make PR7542 fail consistently.
LiveInterval::overlapsFrom dereferences end() if it is called on an empty
interval.
It would be reasonable to just return false - an empty interval doesn't overlap
anything, but I want to know who is doing it first.
llvm-svn: 108264
Diffstat (limited to 'llvm/lib/CodeGen/LiveInterval.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LiveInterval.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/LiveInterval.cpp b/llvm/lib/CodeGen/LiveInterval.cpp index 9b057b0fec2..1b8509b9a15 100644 --- a/llvm/lib/CodeGen/LiveInterval.cpp +++ b/llvm/lib/CodeGen/LiveInterval.cpp @@ -119,6 +119,7 @@ bool LiveInterval::killedInRange(SlotIndex Start, SlotIndex End) const { // bool LiveInterval::overlapsFrom(const LiveInterval& other, const_iterator StartPos) const { + assert(!empty() && "empty interval"); const_iterator i = begin(); const_iterator ie = end(); const_iterator j = StartPos; |
