Output per-function size-info remarks

This patch adds per-function size information remarks. Previously, passing
-Rpass-analysis=size-info would only give you per-module changes. By adding
the ability to do this per-function, it's easier to see which functions
contributed the most to size changes.

https://reviews.llvm.org/D51467

llvm-svn: 341588

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/lib/Analysis/CallGraphSCCPass.cpp b/llvm/lib/Analysis/CallGraphSCCPass.cpp
index 24dbda05f4b..3e9226f91de 100644
--- a/llvm/lib/Analysis/CallGraphSCCPass.cpp
+++ b/llvm/lib/Analysis/CallGraphSCCPass.cpp
@@ -132,10 +132,11 @@ bool CGPassManager::RunPassOnSCC(Pass *P, CallGraphSCC &CurSCC,
 
     {
       unsigned InstrCount, SCCCount = 0;
+      StringMap<std::pair<unsigned, unsigned>> FunctionToInstrCount;
       bool EmitICRemark = M.shouldEmitInstrCountChangedRemark();
       TimeRegion PassTimer(getPassTimer(CGSP));
       if (EmitICRemark)
-        InstrCount = initSizeRemarkInfo(M);
+        InstrCount = initSizeRemarkInfo(M, FunctionToInstrCount);
       Changed = CGSP->runOnSCC(CurSCC);
 
       if (EmitICRemark) {
@@ -146,7 +147,8 @@ bool CGPassManager::RunPassOnSCC(Pass *P, CallGraphSCC &CurSCC,
           // Yep. Emit a remark and update InstrCount.
           int64_t Delta =
               static_cast<int64_t>(SCCCount) - static_cast<int64_t>(InstrCount);
-          emitInstrCountChangedRemark(P, M, Delta, InstrCount);
+          emitInstrCountChangedRemark(P, M, Delta, InstrCount,
+                                      FunctionToInstrCount);
           InstrCount = SCCCount;
         }
       }