From 75f72f6b73180ca7c777915a20b293b89ebd142b Mon Sep 17 00:00:00 2001
From: Hiroshi Yamauchi <yamauchi@google.com>
Date: Mon, 28 Oct 2019 12:35:34 -0700
Subject: [PGO][PGSO] SizeOpts changes.

Summary:
(Split of off D67120)

SizeOpts/MachineSizeOpts changes for profile guided size optimization.

(A second try after previously committed as r375254 and reverted as r375375.)

Subscribers: mgorny, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69409
---
 llvm/lib/CodeGen/MachineLoopInfo.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'llvm/lib/CodeGen/MachineLoopInfo.cpp')

diff --git a/llvm/lib/CodeGen/MachineLoopInfo.cpp b/llvm/lib/CodeGen/MachineLoopInfo.cpp
index 3b8b430d1b0..85822a67149 100644
--- a/llvm/lib/CodeGen/MachineLoopInfo.cpp
+++ b/llvm/lib/CodeGen/MachineLoopInfo.cpp
@@ -36,11 +36,15 @@ INITIALIZE_PASS_END(MachineLoopInfo, "machine-loops",
 char &llvm::MachineLoopInfoID = MachineLoopInfo::ID;
 
 bool MachineLoopInfo::runOnMachineFunction(MachineFunction &) {
-  releaseMemory();
-  LI.analyze(getAnalysis<MachineDominatorTree>().getBase());
+  calculate(getAnalysis<MachineDominatorTree>());
   return false;
 }
 
+void MachineLoopInfo::calculate(MachineDominatorTree &MDT) {
+  releaseMemory();
+  LI.analyze(MDT.getBase());
+}
+
 void MachineLoopInfo::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
   AU.addRequired<MachineDominatorTree>();
-- 
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