[Matrix] Don't update Changed based on Visit* return value (NFC).

Visit* are always modifying the IR, remove the boolean result.

Co-authored by: Florian Hahn <[email protected]>

Author: jroelofs

llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp

@@ -1056,19 +1056,24 @@ class LowerMatrixIntrinsics {
 
       IRBuilder<> Builder(Inst);
 
+      const ShapeInfo &SI = ShapeMap.at(Inst);
+
       if (CallInst *CInst = dyn_cast<CallInst>(Inst))
-        Changed |= VisitCallInst(CInst);
+        Changed |= tryVisitCallInst(CInst);
 
       Value *Op1;
       Value *Op2;
-      if (auto *BinOp = dyn_cast<BinaryOperator>(Inst))
-        Changed |= VisitBinaryOperator(BinOp);
-      if (auto *UnOp = dyn_cast<UnaryOperator>(Inst))
-        Changed |= VisitUnaryOperator(UnOp);
       if (match(Inst, m_Load(m_Value(Op1))))
-        Changed |= VisitLoad(cast<LoadInst>(Inst), Op1, Builder);
+        VisitLoad(cast<LoadInst>(Inst), SI, Op1, Builder);
       else if (match(Inst, m_Store(m_Value(Op1), m_Value(Op2))))
-        Changed |= VisitStore(cast<StoreInst>(Inst), Op1, Op2, Builder);
+        VisitStore(cast<StoreInst>(Inst), SI, Op1, Op2, Builder);
+      else if (auto *BinOp = dyn_cast<BinaryOperator>(Inst))
+        VisitBinaryOperator(BinOp, SI);
+      else if (auto *UnOp = dyn_cast<UnaryOperator>(Inst))
+        VisitUnaryOperator(UnOp, SI);
+      else
+        continue;
+      Changed = true;
     }
 
     if (ORE) {
@@ -1107,7 +1112,7 @@ class LowerMatrixIntrinsics {
   }
 
   /// Replace intrinsic calls
-  bool VisitCallInst(CallInst *Inst) {
+  bool tryVisitCallInst(CallInst *Inst) {
     if (!Inst->getCalledFunction() || !Inst->getCalledFunction()->isIntrinsic())
       return false;
 
@@ -2105,72 +2110,53 @@ class LowerMatrixIntrinsics {
   }
 
   /// Lower load instructions, if shape information is available.
-  bool VisitLoad(LoadInst *Inst, Value *Ptr, IRBuilder<> &Builder) {
-    auto I = ShapeMap.find(Inst);
-    assert(I != ShapeMap.end() &&
-           "must only visit instructions with shape info");
+  void VisitLoad(LoadInst *Inst, const ShapeInfo &SI, Value *Ptr, IRBuilder<> &Builder) {
     LowerLoad(Inst, Ptr, Inst->getAlign(),
-              Builder.getInt64(I->second.getStride()), Inst->isVolatile(),
-              I->second);
-    return true;
+              Builder.getInt64(SI.getStride()), Inst->isVolatile(),
+              SI);
   }
 
-  bool VisitStore(StoreInst *Inst, Value *StoredVal, Value *Ptr,
+  void VisitStore(StoreInst *Inst, const ShapeInfo &SI, Value *StoredVal, Value *Ptr,
                   IRBuilder<> &Builder) {
-    auto I = ShapeMap.find(StoredVal);
-    assert(I != ShapeMap.end() &&
-           "must only visit instructions with shape info");
     LowerStore(Inst, StoredVal, Ptr, Inst->getAlign(),
-               Builder.getInt64(I->second.getStride()), Inst->isVolatile(),
-               I->second);
-    return true;
+               Builder.getInt64(SI.getStride()), Inst->isVolatile(),
+               SI);
   }
 
   /// Lower binary operators, if shape information is available.
-  bool VisitBinaryOperator(BinaryOperator *Inst) {
-    auto I = ShapeMap.find(Inst);
-    assert(I != ShapeMap.end() &&
-           "must only visit instructions with shape info");
-
+  void VisitBinaryOperator(BinaryOperator *Inst, const ShapeInfo &SI) {
     Value *Lhs = Inst->getOperand(0);
     Value *Rhs = Inst->getOperand(1);
 
     IRBuilder<> Builder(Inst);
-    ShapeInfo &Shape = I->second;
 
     MatrixTy Result;
-    MatrixTy A = getMatrix(Lhs, Shape, Builder);
-    MatrixTy B = getMatrix(Rhs, Shape, Builder);
+    MatrixTy A = getMatrix(Lhs, SI, Builder);
+    MatrixTy B = getMatrix(Rhs, SI, Builder);
     assert(A.isColumnMajor() == B.isColumnMajor() &&
            Result.isColumnMajor() == A.isColumnMajor() &&
            "operands must agree on matrix layout");
 
     Builder.setFastMathFlags(getFastMathFlags(Inst));
 
-    for (unsigned I = 0; I < Shape.getNumVectors(); ++I)
+    for (unsigned I = 0; I < SI.getNumVectors(); ++I)
       Result.addVector(Builder.CreateBinOp(Inst->getOpcode(), A.getVector(I),
                                            B.getVector(I)));
 
     finalizeLowering(Inst,
                      Result.addNumComputeOps(getNumOps(Result.getVectorTy()) *
                                              Result.getNumVectors()),
                      Builder);
-    return true;
   }
 
   /// Lower unary operators, if shape information is available.
-  bool VisitUnaryOperator(UnaryOperator *Inst) {
-    auto I = ShapeMap.find(Inst);
-    assert(I != ShapeMap.end() &&
-           "must only visit instructions with shape info");
-
+  void VisitUnaryOperator(UnaryOperator *Inst, const ShapeInfo &SI) {
     Value *Op = Inst->getOperand(0);
 
     IRBuilder<> Builder(Inst);
-    ShapeInfo &Shape = I->second;
 
     MatrixTy Result;
-    MatrixTy M = getMatrix(Op, Shape, Builder);
+    MatrixTy M = getMatrix(Op, SI, Builder);
 
     Builder.setFastMathFlags(getFastMathFlags(Inst));
 
@@ -2184,14 +2170,13 @@ class LowerMatrixIntrinsics {
       }
     };
 
-    for (unsigned I = 0; I < Shape.getNumVectors(); ++I)
+    for (unsigned I = 0; I < SI.getNumVectors(); ++I)
       Result.addVector(BuildVectorOp(M.getVector(I)));
 
     finalizeLowering(Inst,
                      Result.addNumComputeOps(getNumOps(Result.getVectorTy()) *
                                              Result.getNumVectors()),
                      Builder);
-    return true;
   }
 
   /// Helper to linearize a matrix expression tree into a string. Currently