From 610bebf777de07ca68f016a63b548fbe22c2fd3c Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Mon, 28 Jun 2010 19:39:57 +0000 Subject: After physreg coalescing, physical registers might not have live ranges where you would expect. Don't assert on that case, just give up. This fixes PR7513. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107046 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SimpleRegisterCoalescing.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'lib/CodeGen/SimpleRegisterCoalescing.cpp') 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. -- cgit v1.2.3-70-g09d2