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/LoopPass.cpp b/llvm/lib/Analysis/LoopPass.cpp
index 3629ae90da5..4c1bd7ab08e 100644
--- a/llvm/lib/Analysis/LoopPass.cpp
+++ b/llvm/lib/Analysis/LoopPass.cpp
@@ -195,10 +195,11 @@ bool LPPassManager::runOnFunction(Function &F) {
 
   // Walk Loops
   unsigned InstrCount, FunctionSize = 0;
+  StringMap<std::pair<unsigned, unsigned>> FunctionToInstrCount;
   bool EmitICRemark = M.shouldEmitInstrCountChangedRemark();
   // Collect the initial size of the module and the function we're looking at.
   if (EmitICRemark) {
-    InstrCount = initSizeRemarkInfo(M);
+    InstrCount = initSizeRemarkInfo(M, FunctionToInstrCount);
     FunctionSize = F.getInstructionCount();
   }
   while (!LQ.empty()) {
@@ -226,7 +227,8 @@ bool LPPassManager::runOnFunction(Function &F) {
           if (NewSize != FunctionSize) {
             int64_t Delta = static_cast<int64_t>(NewSize) -
                             static_cast<int64_t>(FunctionSize);
-            emitInstrCountChangedRemark(P, M, Delta, InstrCount, &F);
+            emitInstrCountChangedRemark(P, M, Delta, InstrCount,
+                                        FunctionToInstrCount, &F);
             InstrCount = static_cast<int64_t>(InstrCount) + Delta;
             FunctionSize = NewSize;
           }