diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-12-08 23:51:35 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-12-08 23:51:35 +0000 |
| commit | 9b0c4f8af3e303c85ddb5ff0ee2c8e27a4d77203 (patch) | |
| tree | 74ecb9a8267c209adc0fc0f34fa2d1db07f89ac4 /lib/CodeGen/RegAllocGreedy.cpp | |
| parent | 045869c12ac5af2b1dd97a0dcbedab8db01fe765 (diff) | |
Properly deal with empty intervals when checking for interference.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121319 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocGreedy.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocGreedy.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp index c88d474315..f69979bf2a 100644 --- a/lib/CodeGen/RegAllocGreedy.cpp +++ b/lib/CodeGen/RegAllocGreedy.cpp @@ -173,6 +173,7 @@ unsigned RAGreedy::selectOrSplit(LiveInterval &VirtReg, // Found an available register. return PhysReg; } + assert(!VirtReg.empty() && "Empty VirtReg has interference"); LiveInterval *interferingVirtReg = Queries[interfReg].firstInterference().liveUnionPos().value(); |