[MCA] Add -summary-view option

Summary:
While that is indeed a quite interesting summary stat,
there are cases where it does not really add anything
other than consuming extra lines.

Declutters the output of D48190.

Reviewers: RKSimon, andreadb, courbet, craig.topper

Reviewed By: andreadb

Subscribers: javed.absar, gbedwell, llvm-commits

Differential Revision: https://reviews.llvm.org/D48209

llvm-svn: 334833

1 files changed, 10 insertions, 1 deletions

diff --git a/llvm/tools/llvm-mca/llvm-mca.cpp b/llvm/tools/llvm-mca/llvm-mca.cpp
index 925584b0193..4d10704c10c 100644
--- a/llvm/tools/llvm-mca/llvm-mca.cpp
+++ b/llvm/tools/llvm-mca/llvm-mca.cpp
@@ -109,6 +109,11 @@ static cl::opt<bool> PrintDispatchStats("dispatch-stats",
                                         cl::desc("Print dispatch statistics"),
                                         cl::cat(ViewOptions), cl::init(false));
 
+static cl::opt<bool>
+    PrintSummaryView("summary-view", cl::Hidden,
+                     cl::desc("Print summary view (enabled by default)"),
+                     cl::cat(ViewOptions), cl::init(true));
+
 static cl::opt<bool> PrintSchedulerStats("scheduler-stats",
                                          cl::desc("Print scheduler statistics"),
                                          cl::cat(ViewOptions), cl::init(false));
@@ -302,6 +307,7 @@ static void processViewOptions() {
     return;
 
   if (EnableAllViews.getNumOccurrences()) {
+    processOptionImpl(PrintSummaryView, EnableAllViews);
     processOptionImpl(PrintResourcePressureView, EnableAllViews);
     processOptionImpl(PrintTimelineView, EnableAllViews);
     processOptionImpl(PrintInstructionInfoView, EnableAllViews);
@@ -311,6 +317,7 @@ static void processViewOptions() {
       EnableAllViews.getPosition() < EnableAllStats.getPosition()
           ? EnableAllStats
           : EnableAllViews;
+  processOptionImpl(PrintSummaryView, Default);
   processOptionImpl(PrintRegisterFileStats, Default);
   processOptionImpl(PrintDispatchStats, Default);
   processOptionImpl(PrintSchedulerStats, Default);
@@ -495,7 +502,9 @@ int main(int argc, char **argv) {
                    LoadQueueSize, StoreQueueSize, AssumeNoAlias);
     mca::BackendPrinter Printer(B);
 
-    Printer.addView(llvm::make_unique<mca::SummaryView>(SM, S, Width));
+    if (PrintSummaryView)
+      Printer.addView(llvm::make_unique<mca::SummaryView>(SM, S, Width));
+
     if (PrintInstructionInfoView)
       Printer.addView(
           llvm::make_unique<mca::InstructionInfoView>(*STI, *MCII, S, *IP));