[llvm] [LLVM] Make `MachineBlockFrequencyInfo`'s constructor arguments const (NFC) (PR #149279)

[Lucas Ramirez via llvm-commits]

https://github.com/lucas-rami created https://github.com/llvm/llvm-project/pull/149279

This avoids having to call `MachineBlockFrequencyInfo::calculate` manually if one of the parameters is const.

>From 607cf79108afd3e5b2d068bd47aa0bd5fa4d9907 Mon Sep 17 00:00:00 2001
From: Lucas Ramirez <lucas.rami at proton.me>
Date: Thu, 17 Jul 2025 09:48:05 +0000
Subject: [PATCH] Add const to constructor

---
 llvm/include/llvm/CodeGen/MachineBlockFrequencyInfo.h | 4 ++--
 llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp        | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/llvm/include/llvm/CodeGen/MachineBlockFrequencyInfo.h b/llvm/include/llvm/CodeGen/MachineBlockFrequencyInfo.h
index aef91909dd17b..794075201d646 100644
--- a/llvm/include/llvm/CodeGen/MachineBlockFrequencyInfo.h
+++ b/llvm/include/llvm/CodeGen/MachineBlockFrequencyInfo.h
@@ -39,8 +39,8 @@ class MachineBlockFrequencyInfo {
 public:
   LLVM_ABI MachineBlockFrequencyInfo(); // Legacy pass manager only.
   LLVM_ABI explicit MachineBlockFrequencyInfo(
-      MachineFunction &F, MachineBranchProbabilityInfo &MBPI,
-      MachineLoopInfo &MLI);
+      const MachineFunction &F, const MachineBranchProbabilityInfo &MBPI,
+      const MachineLoopInfo &MLI);
   LLVM_ABI MachineBlockFrequencyInfo(MachineBlockFrequencyInfo &&);
   LLVM_ABI ~MachineBlockFrequencyInfo();
 
diff --git a/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp b/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp
index 9daacfd399787..e7fa0824fd98a 100644
--- a/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp
+++ b/llvm/lib/CodeGen/MachineBlockFrequencyInfo.cpp
@@ -202,8 +202,8 @@ MachineBlockFrequencyInfo::MachineBlockFrequencyInfo(
     MachineBlockFrequencyInfo &&) = default;
 
 MachineBlockFrequencyInfo::MachineBlockFrequencyInfo(
-    MachineFunction &F, MachineBranchProbabilityInfo &MBPI,
-    MachineLoopInfo &MLI) {
+    const MachineFunction &F, const MachineBranchProbabilityInfo &MBPI,
+    const MachineLoopInfo &MLI) {
   calculate(F, MBPI, MLI);
 }