From 2e58a410896ffbee3d856b113c3718bc4a5462e8 Mon Sep 17 00:00:00 2001 From: Alkis Evlogimenos Date: Wed, 1 Sep 2004 22:34:52 +0000 Subject: [PATCH] Give a better assertion if we see a use before a def. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16135 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/LiveVariables.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp index f6d00f702ac..630477d7b65 100644 --- a/lib/CodeGen/LiveVariables.cpp +++ b/lib/CodeGen/LiveVariables.cpp @@ -82,6 +82,8 @@ void LiveVariables::MarkVirtRegAliveInBlock(VarInfo &VRInfo, void LiveVariables::HandleVirtRegUse(VarInfo &VRInfo, MachineBasicBlock *MBB, MachineInstr *MI) { + assert(VRInfo.DefInst && "Register use before def!"); + // Check to see if this basic block is already a kill block... if (!VRInfo.Kills.empty() && VRInfo.Kills.back()->getParent() == MBB) { // Yes, this register is killed in this basic block already. Increase the -- 2.11.0