[llvm] [CodeGen][NewPM] Make MFProperty methods const (PR #113304)

[Akshat Oke via llvm-commits]

https://github.com/optimisan created https://github.com/llvm/llvm-project/pull/113304

Makes them congruent with the legacy PM methods.

Unless it was made non-const on purpose: was it?

>From a8ed7d2de65219cba286070d254a97addc0b41e8 Mon Sep 17 00:00:00 2001
From: Akshat Oke <Akshat.Oke at amd.com>
Date: Tue, 22 Oct 2024 12:13:02 +0000
Subject: [PATCH] [CodeGen][NewPM] Make MFProperty methods const

Makes them congruent with the legacy PM methods.
---
 llvm/include/llvm/CodeGen/MachinePassManager.h        | 4 ++--
 llvm/include/llvm/CodeGen/RegAllocFast.h              | 6 +++---
 llvm/include/llvm/CodeGen/TwoAddressInstructionPass.h | 2 +-
 llvm/lib/Target/AMDGPU/SILowerSGPRSpills.h            | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/llvm/include/llvm/CodeGen/MachinePassManager.h b/llvm/include/llvm/CodeGen/MachinePassManager.h
index 253fabdac0019d..69b5f6e92940c4 100644
--- a/llvm/include/llvm/CodeGen/MachinePassManager.h
+++ b/llvm/include/llvm/CodeGen/MachinePassManager.h
@@ -41,7 +41,7 @@ using MachineFunctionAnalysisManager = AnalysisManager<MachineFunction>;
 /// MachineFunctionProperties properly.
 template <typename PassT> class MFPropsModifier {
 public:
-  MFPropsModifier(PassT &P_, MachineFunction &MF_) : P(P_), MF(MF_) {
+  MFPropsModifier(const PassT &P_, MachineFunction &MF_) : P(P_), MF(MF_) {
     auto &MFProps = MF.getProperties();
 #ifndef NDEBUG
     if constexpr (has_get_required_properties_v<PassT>) {
@@ -71,7 +71,7 @@ template <typename PassT> class MFPropsModifier {
   }
 
 private:
-  PassT &P;
+  const PassT &P;
   MachineFunction &MF;
 
   template <typename T>
diff --git a/llvm/include/llvm/CodeGen/RegAllocFast.h b/llvm/include/llvm/CodeGen/RegAllocFast.h
index c99c715daacf96..440264a06ae89e 100644
--- a/llvm/include/llvm/CodeGen/RegAllocFast.h
+++ b/llvm/include/llvm/CodeGen/RegAllocFast.h
@@ -27,12 +27,12 @@ class RegAllocFastPass : public PassInfoMixin<RegAllocFastPass> {
   RegAllocFastPass(RegAllocFastPassOptions Opts = RegAllocFastPassOptions())
       : Opts(Opts) {}
 
-  MachineFunctionProperties getRequiredProperties() {
+  MachineFunctionProperties getRequiredProperties() const {
     return MachineFunctionProperties().set(
         MachineFunctionProperties::Property::NoPHIs);
   }
 
-  MachineFunctionProperties getSetProperties() {
+  MachineFunctionProperties getSetProperties() const {
     if (Opts.ClearVRegs) {
       return MachineFunctionProperties().set(
           MachineFunctionProperties::Property::NoVRegs);
@@ -41,7 +41,7 @@ class RegAllocFastPass : public PassInfoMixin<RegAllocFastPass> {
     return MachineFunctionProperties();
   }
 
-  MachineFunctionProperties getClearedProperties() {
+  MachineFunctionProperties getClearedProperties() const {
     return MachineFunctionProperties().set(
         MachineFunctionProperties::Property::IsSSA);
   }
diff --git a/llvm/include/llvm/CodeGen/TwoAddressInstructionPass.h b/llvm/include/llvm/CodeGen/TwoAddressInstructionPass.h
index 7f2a070c584347..d4d47f29cc8446 100644
--- a/llvm/include/llvm/CodeGen/TwoAddressInstructionPass.h
+++ b/llvm/include/llvm/CodeGen/TwoAddressInstructionPass.h
@@ -18,7 +18,7 @@ class TwoAddressInstructionPass
 public:
   PreservedAnalyses run(MachineFunction &MF,
                         MachineFunctionAnalysisManager &MFAM);
-  MachineFunctionProperties getSetProperties() {
+  MachineFunctionProperties getSetProperties() const {
     return MachineFunctionProperties().set(
         MachineFunctionProperties::Property::TiedOpsRewritten);
   }
diff --git a/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.h b/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.h
index 730b3f8c617bd3..a9ffb5705d094a 100644
--- a/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.h
+++ b/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.h
@@ -17,7 +17,7 @@ class SILowerSGPRSpillsPass : public PassInfoMixin<SILowerSGPRSpillsPass> {
   PreservedAnalyses run(MachineFunction &MF,
                         MachineFunctionAnalysisManager &MFAM);
 
-  MachineFunctionProperties getClearedProperties() {
+  MachineFunctionProperties getClearedProperties() const {
     // SILowerSGPRSpills introduces new Virtual VGPRs for spilling SGPRs.
     return MachineFunctionProperties()
         .set(MachineFunctionProperties::Property::IsSSA)