From 68c2cd059e5136a29ab11f0650d4c6b1617d5e09 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Mon, 30 Jul 2012 23:15:12 +0000 Subject: [PATCH] Avoid looking at stale data in verifyAnalysis(). llvm-svn: 161004 --- llvm/lib/CodeGen/MachineTraceMetrics.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/llvm/lib/CodeGen/MachineTraceMetrics.cpp b/llvm/lib/CodeGen/MachineTraceMetrics.cpp index e688d78596ce..9c961c6dc4e6 100644 --- a/llvm/lib/CodeGen/MachineTraceMetrics.cpp +++ b/llvm/lib/CodeGen/MachineTraceMetrics.cpp @@ -33,7 +33,7 @@ INITIALIZE_PASS_END(MachineTraceMetrics, "machine-trace-metrics", "Machine Trace Metrics", false, true) MachineTraceMetrics::MachineTraceMetrics() - : MachineFunctionPass(ID), TII(0), TRI(0), MRI(0), Loops(0) { + : MachineFunctionPass(ID), MF(0), TII(0), TRI(0), MRI(0), Loops(0) { std::fill(Ensembles, array_endof(Ensembles), (Ensemble*)0); } @@ -55,6 +55,7 @@ bool MachineTraceMetrics::runOnMachineFunction(MachineFunction &Func) { } void MachineTraceMetrics::releaseMemory() { + MF = 0; BlockInfo.clear(); for (unsigned i = 0; i != TS_NumStrategies; ++i) { delete Ensembles[i]; @@ -290,6 +291,8 @@ void MachineTraceMetrics::invalidate(const MachineBasicBlock *MBB) { } void MachineTraceMetrics::verifyAnalysis() const { + if (!MF) + return; #ifndef NDEBUG assert(BlockInfo.size() == MF->getNumBlockIDs() && "Outdated BlockInfo size"); for (unsigned i = 0; i != TS_NumStrategies; ++i)