commit b52297508ef8c6801c194b90407479e093a00ed5
author Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> Tue Mar 13 17:24:32 2018 +0000
committer Andrea Di Biagio <Andrea_DiBiagio@sn.scee.net> Tue Mar 13 17:24:32 2018 +0000
tree 4aa388b8f64a76f80ac0711025f5cda71b08eff9
parent 9855b3938093eb4a3663474a42a1a694327816c0

[llvm-mca] Remove the logic that computes the reciprocal throughput, and make the SummaryView independent from the Backend. NFCI

Since r327420, the tool can query the MCSchedModel interface to obtain the
reciprocal throughput information.
As a consequence, method `ResourceManager::getRThroughput`, and
method `Backend::getRThroughput` are no longer needed.

This patch simplifies the code by removing the custom RThroughput computation.
This patch also refactors class SummaryView by removing the dependency with
the Backend object.

No functional change intended.

llvm-svn: 327425

llvm/tools/llvm-mca/SummaryView.h

diff --git a/llvm/tools/llvm-mca/SummaryView.h b/llvm/tools/llvm-mca/SummaryView.h
index d42d60c..db2d4c4 100644
--- a/llvm/tools/llvm-mca/SummaryView.h
+++ b/llvm/tools/llvm-mca/SummaryView.h
@@ -49,9 +49,11 @@
 #ifndef LLVM_TOOLS_LLVM_MCA_SUMMARYVIEW_H
 #define LLVM_TOOLS_LLVM_MCA_SUMMARYVIEW_H
 
-#include "Backend.h"
+#include "SourceMgr.h"
 #include "View.h"
 #include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/MC/MCInstrInfo.h"
 #include "llvm/Support/raw_ostream.h"
 
 #define DEBUG_TYPE "llvm-mca"
@@ -66,10 +68,11 @@
 /// classes the task of printing out timeline information as well as
 /// resource pressure.
 class SummaryView : public View {
-  const Backend &B;
+  const llvm::MCSubtargetInfo &STI;
+  const llvm::MCInstrInfo &MCII;
+  const SourceMgr &Source;
   llvm::MCInstPrinter &MCIP;
-  const unsigned Iterations;
-  const unsigned Instructions;
+
   const unsigned DispatchWidth;
   unsigned TotalCycles;
 
@@ -77,10 +80,10 @@
   void printInstructionInfo(llvm::raw_ostream &OS) const;
 
 public:
-  SummaryView(const Backend &backend, llvm::MCInstPrinter &IP,
-              unsigned NumIterations, unsigned NumInstructions, unsigned Width)
-      : B(backend), MCIP(IP), Iterations(NumIterations),
-        Instructions(NumInstructions), DispatchWidth(Width), TotalCycles(0) {}
+  SummaryView(const llvm::MCSubtargetInfo &sti, const llvm::MCInstrInfo &mcii,
+              const SourceMgr &S, llvm::MCInstPrinter &IP, unsigned Width)
+      : STI(sti), MCII(mcii), Source(S), MCIP(IP), DispatchWidth(Width),
+        TotalCycles(0) {}
 
   void onCycleEnd(unsigned /* unused */) override { ++TotalCycles; }