From 13f76f84bc8f6a0bad31f56639a12f43f938b0b9 Mon Sep 17 00:00:00 2001 From: Zhizhou Yang Date: Tue, 23 Oct 2018 21:51:56 +0000 Subject: Print out DebugCounter info with -print-debug-counter Summary: This patch will print out {Counter, Skip, StopAfter} info of all passes which have DebugCounter set at destruction. It can be used to monitor how many times does certain transformation happen in a pass, and also help check if -debug-counter option is set correctly. Please refer to this [[ http://lists.llvm.org/pipermail/llvm-dev/2018-July/124722.html | thread ]] for motivation. Reviewers: george.burgess.iv, davide, greened Reviewed By: greened Subscribers: kristina, llozano, mgorny, llvm-commits, mgrang Differential Revision: https://reviews.llvm.org/D50031 llvm-svn: 345085 --- llvm/lib/Support/DebugCounter.cpp | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) (limited to 'llvm/lib/Support/DebugCounter.cpp') diff --git a/llvm/lib/Support/DebugCounter.cpp b/llvm/lib/Support/DebugCounter.cpp index 9c8260dbe07..6598103658d 100644 --- a/llvm/lib/Support/DebugCounter.cpp +++ b/llvm/lib/Support/DebugCounter.cpp @@ -49,8 +49,18 @@ static DebugCounterList DebugCounterOption( cl::desc("Comma separated list of debug counter skip and count"), cl::CommaSeparated, cl::ZeroOrMore, cl::location(DebugCounter::instance())); +static cl::opt PrintDebugCounter( + "print-debug-counter", cl::Hidden, cl::init(false), cl::Optional, + cl::desc("Print out debug counter info after all counters accumulated")); + static ManagedStatic DC; +// Print information when destroyed, iff command line option is specified. +DebugCounter::~DebugCounter() { + if (isCountingEnabled() && PrintDebugCounter) + print(dbgs()); +} + DebugCounter &DebugCounter::instance() { return *DC; } // This is called by the command line parser when it sees a value for the @@ -107,11 +117,18 @@ void DebugCounter::push_back(const std::string &Val) { } void DebugCounter::print(raw_ostream &OS) const { + SmallVector CounterNames(RegisteredCounters.begin(), + RegisteredCounters.end()); + sort(CounterNames.begin(), CounterNames.end()); + + auto &Us = instance(); OS << "Counters and values:\n"; - for (const auto &KV : Counters) - OS << left_justify(RegisteredCounters[KV.first], 32) << ": {" - << KV.second.Count << "," << KV.second.Skip << "," - << KV.second.StopAfter << "}\n"; + for (auto &CounterName : CounterNames) { + unsigned CounterID = getCounterId(CounterName); + OS << left_justify(RegisteredCounters[CounterID], 32) << ": {" + << Us.Counters[CounterID].Count << "," << Us.Counters[CounterID].Skip + << "," << Us.Counters[CounterID].StopAfter << "}\n"; + } } LLVM_DUMP_METHOD void DebugCounter::dump() const { -- cgit v1.2.3