From b589bf7d77a57e961a871ae5ffee2381722d8c0f Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Fri, 2 May 2003 18:44:42 +0000 Subject: Fix a bug which occurred with empty basic blocks git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5982 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/PrologEpilogInserter.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib/CodeGen') diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp index 2f7f1f4..4839c09 100644 --- a/lib/CodeGen/PrologEpilogInserter.cpp +++ b/lib/CodeGen/PrologEpilogInserter.cpp @@ -160,7 +160,7 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) { const TargetInstrInfo &TII = Fn.getTarget().getInstrInfo(); for (MachineFunction::iterator FI = Fn.begin(), E = Fn.end(); FI != E; ++FI) { // If last instruction is a return instruction, add an epilogue - if (TII.isReturn(FI->back()->getOpcode())) { + if (!FI->empty() && TII.isReturn(FI->back()->getOpcode())) { MBB = FI; I = MBB->end()-1; for (unsigned i = 0, e = RegsToSave.size(); i != e; ++i) { -- cgit v1.1