diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/GVN.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/GVN.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/GVN.cpp b/llvm/lib/Transforms/Scalar/GVN.cpp index 2c47a8ab783..b1a0db356a1 100644 --- a/llvm/lib/Transforms/Scalar/GVN.cpp +++ b/llvm/lib/Transforms/Scalar/GVN.cpp @@ -656,11 +656,14 @@ namespace { LeaderTableEntry* Prev = nullptr; LeaderTableEntry* Curr = &LeaderTable[N]; - while (Curr->Val != I || Curr->BB != BB) { + while (Curr && (Curr->Val != I || Curr->BB != BB)) { Prev = Curr; Curr = Curr->Next; } + if (!Curr) + return; + if (Prev) { Prev->Next = Curr->Next; } else { |
