[llvm] TargetTransformInfo: Add missing consts to a couple of methods (PR #128492)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-analysis

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/128492.diff


4 Files Affected:

- (modified) llvm/include/llvm/Analysis/TargetTransformInfo.h (+4-4) 
- (modified) llvm/include/llvm/CodeGen/BasicTTIImpl.h (+2-2) 
- (modified) llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp (+1-1) 
- (modified) llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h (+1-1) 


``````````diff
diff --git a/llvm/include/llvm/Analysis/TargetTransformInfo.h b/llvm/include/llvm/Analysis/TargetTransformInfo.h
index 9048481b49189..e1bebb01372e0 100644
--- a/llvm/include/llvm/Analysis/TargetTransformInfo.h
+++ b/llvm/include/llvm/Analysis/TargetTransformInfo.h
@@ -2055,8 +2055,8 @@ class TargetTransformInfo::Concept {
   virtual bool isTruncateFree(Type *Ty1, Type *Ty2) = 0;
   virtual bool isProfitableToHoist(Instruction *I) = 0;
   virtual bool useAA() = 0;
-  virtual bool isTypeLegal(Type *Ty) = 0;
-  virtual unsigned getRegUsageForType(Type *Ty) = 0;
+  virtual bool isTypeLegal(Type *Ty) const = 0;
+  virtual unsigned getRegUsageForType(Type *Ty) const = 0;
   virtual bool shouldBuildLookupTables() = 0;
   virtual bool shouldBuildLookupTablesForConstant(Constant *C) = 0;
   virtual bool shouldBuildRelLookupTables() = 0;
@@ -2645,8 +2645,8 @@ class TargetTransformInfo::Model final : public TargetTransformInfo::Concept {
     return Impl.isProfitableToHoist(I);
   }
   bool useAA() override { return Impl.useAA(); }
-  bool isTypeLegal(Type *Ty) override { return Impl.isTypeLegal(Ty); }
-  unsigned getRegUsageForType(Type *Ty) override {
+  bool isTypeLegal(Type *Ty) const override { return Impl.isTypeLegal(Ty); }
+  unsigned getRegUsageForType(Type *Ty) const override {
     return Impl.getRegUsageForType(Ty);
   }
   bool shouldBuildLookupTables() override {
diff --git a/llvm/include/llvm/CodeGen/BasicTTIImpl.h b/llvm/include/llvm/CodeGen/BasicTTIImpl.h
index 032c7d7b5159e..bf6bfaca44a06 100644
--- a/llvm/include/llvm/CodeGen/BasicTTIImpl.h
+++ b/llvm/include/llvm/CodeGen/BasicTTIImpl.h
@@ -465,12 +465,12 @@ class BasicTTIImplBase : public TargetTransformInfoImplCRTPBase<T> {
 
   bool useAA() const { return getST()->useAA(); }
 
-  bool isTypeLegal(Type *Ty) {
+  bool isTypeLegal(Type *Ty) const {
     EVT VT = getTLI()->getValueType(DL, Ty, /*AllowUnknown=*/true);
     return getTLI()->isTypeLegal(VT);
   }
 
-  unsigned getRegUsageForType(Type *Ty) {
+  unsigned getRegUsageForType(Type *Ty) const {
     EVT ETy = getTLI()->getValueType(DL, Ty);
     return getTLI()->getNumRegisters(Ty->getContext(), ETy);
   }
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
index 39a35b0550f98..50662a00732da 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -2517,7 +2517,7 @@ void RISCVTTIImpl::getPeelingPreferences(Loop *L, ScalarEvolution &SE,
   BaseT::getPeelingPreferences(L, SE, PP);
 }
 
-unsigned RISCVTTIImpl::getRegUsageForType(Type *Ty) {
+unsigned RISCVTTIImpl::getRegUsageForType(Type *Ty) const {
   if (Ty->isVectorTy()) {
     // f16 with only zvfhmin and bf16 will be promoted to f32
     Type *EltTy = cast<VectorType>(Ty)->getElementType();
diff --git a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
index 5389e9bc4a8fe..134a7333b9b06 100644
--- a/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
+++ b/llvm/lib/Target/RISCV/RISCVTargetTransformInfo.h
@@ -115,7 +115,7 @@ class RISCVTTIImpl : public BasicTTIImplBase<RISCVTTIImpl> {
 
   TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const;
 
-  unsigned getRegUsageForType(Type *Ty);
+  unsigned getRegUsageForType(Type *Ty) const;
 
   unsigned getMaximumVF(unsigned ElemWidth, unsigned Opcode) const;
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/128492