diff options
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index b068f316b6..5f4ef5b3b1 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -122,7 +122,8 @@ bool SimpleRegisterCoalescing::AdjustCopiesBackFrom(const CoalescerPair &CP, // AValNo is the value number in A that defines the copy, A3 in the example. SlotIndex CopyUseIdx = CopyIdx.getUseIndex(); LiveInterval::iterator ALR = IntA.FindLiveRangeContaining(CopyUseIdx); - assert(ALR != IntA.end() && "Live range not found!"); + // The live range might not exist after fun with physreg coalescing. + if (ALR == IntA.end()) return false; VNInfo *AValNo = ALR->valno; // If it's re-defined by an early clobber somewhere in the live range, then // it's not safe to eliminate the copy. FIXME: This is a temporary workaround. |