IR: Replace DataLayout::RoundUpAlignment with RoundUpToAlignment

No functional change intended, just cleaning up some code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220187 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/IR/DataLayout.h

@@ -369,7 +369,7 @@ public:
   /// x86_fp80, depending on alignment.
   uint64_t getTypeAllocSize(Type *Ty) const {
     // Round up to the next alignment boundary.
-    return RoundUpAlignment(getTypeStoreSize(Ty), getABITypeAlignment(Ty));
+    return RoundUpToAlignment(getTypeStoreSize(Ty), getABITypeAlignment(Ty));
   }
 
   /// getTypeAllocSizeInBits - Return the offset in bits between successive
@@ -438,16 +438,6 @@ public:
   /// specified global, returned in log form.  This includes an explicitly
   /// requested alignment (if the global has one).
   unsigned getPreferredAlignmentLog(const GlobalVariable *GV) const;
-
-  /// RoundUpAlignment - Round the specified value up to the next alignment
-  /// boundary specified by Alignment.  For example, 7 rounded up to an
-  /// alignment boundary of 4 is 8.  8 rounded up to the alignment boundary of 4
-  /// is 8 because it is already aligned.
-  template <typename UIntTy>
-  static UIntTy RoundUpAlignment(UIntTy Val, unsigned Alignment) {
-    assert((Alignment & (Alignment-1)) == 0 && "Alignment must be power of 2!");
-    return (Val + (Alignment-1)) & ~UIntTy(Alignment-1);
-  }
 };
 
 inline DataLayout *unwrap(LLVMTargetDataRef P) {

include/llvm/Support/MathExtras.h

@@ -597,7 +597,8 @@ inline uint64_t PowerOf2Floor(uint64_t A) {
 ///   RoundUpToAlignment(~0LL, 8) = 0
 /// \endcode
 inline uint64_t RoundUpToAlignment(uint64_t Value, uint64_t Align) {
-  return ((Value + Align - 1) / Align) * Align;
+  assert(isPowerOf2_64(Align) && "Alignment must be power of 2!");
+  return (Value + Align - 1) & ~uint64_t(Align - 1);
 }
 
 /// Returns the offset to the next integer (mod 2**64) that is greater than

lib/ExecutionEngine/ExecutionEngine.cpp

@@ -91,8 +91,8 @@ public:
     Type *ElTy = GV->getType()->getElementType();
     size_t GVSize = (size_t)TD.getTypeAllocSize(ElTy);
     void *RawMemory = ::operator new(
-      DataLayout::RoundUpAlignment(sizeof(GVMemoryBlock),
+      RoundUpToAlignment(sizeof(GVMemoryBlock),
-                                   TD.getPreferredAlignment(GV))
+                         TD.getPreferredAlignment(GV))
       + GVSize);
     new(RawMemory) GVMemoryBlock(GV);
     return static_cast<char*>(RawMemory) + sizeof(GVMemoryBlock);

lib/IR/DataLayout.cpp

@@ -55,7 +55,7 @@ StructLayout::StructLayout(StructType *ST, const DataLayout &DL) {
 
     // Add padding if necessary to align the data element properly.
     if ((StructSize & (TyAlign-1)) != 0)
-      StructSize = DataLayout::RoundUpAlignment(StructSize, TyAlign);
+      StructSize = RoundUpToAlignment(StructSize, TyAlign);
 
     // Keep track of maximum alignment constraint.
     StructAlignment = std::max(TyAlign, StructAlignment);
@@ -70,7 +70,7 @@ StructLayout::StructLayout(StructType *ST, const DataLayout &DL) {
   // Add padding to the end of the struct so that it could be put in an array
   // and all array elements would be aligned correctly.
   if ((StructSize & (StructAlignment-1)) != 0)
-    StructSize = DataLayout::RoundUpAlignment(StructSize, StructAlignment);
+    StructSize = RoundUpToAlignment(StructSize, StructAlignment);
 }
 
 

lib/Transforms/Instrumentation/MemorySanitizer.cpp

@@ -980,7 +980,7 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
             setOrigin(A, EntryIRB.CreateLoad(OriginPtr));
           }
         }
-        ArgOffset += DataLayout::RoundUpAlignment(Size, kShadowTLSAlignment);
+        ArgOffset += RoundUpToAlignment(Size, kShadowTLSAlignment);
       }
       assert(*ShadowPtr && "Could not find shadow for an argument");
       return *ShadowPtr;
@@ -2347,7 +2347,7 @@ struct MemorySanitizerVisitor : public InstVisitor<MemorySanitizerVisitor> {
       (void)Store;
       assert(Size != 0 && Store != nullptr);
       DEBUG(dbgs() << "  Param:" << *Store << "\n");
-      ArgOffset += DataLayout::RoundUpAlignment(Size, 8);
+      ArgOffset += RoundUpToAlignment(Size, 8);
     }
     DEBUG(dbgs() << "  done with call args\n");
 
@@ -2628,7 +2628,7 @@ struct VarArgAMD64Helper : public VarArgHelper {
         Type *RealTy = A->getType()->getPointerElementType();
         uint64_t ArgSize = MS.DL->getTypeAllocSize(RealTy);
         Value *Base = getShadowPtrForVAArgument(RealTy, IRB, OverflowOffset);
-        OverflowOffset += DataLayout::RoundUpAlignment(ArgSize, 8);
+        OverflowOffset += RoundUpToAlignment(ArgSize, 8);
         IRB.CreateMemCpy(Base, MSV.getShadowPtr(A, IRB.getInt8Ty(), IRB),
                          ArgSize, kShadowTLSAlignment);
       } else {
@@ -2650,7 +2650,7 @@ struct VarArgAMD64Helper : public VarArgHelper {
           case AK_Memory:
             uint64_t ArgSize = MS.DL->getTypeAllocSize(A->getType());
             Base = getShadowPtrForVAArgument(A->getType(), IRB, OverflowOffset);
-            OverflowOffset += DataLayout::RoundUpAlignment(ArgSize, 8);
+            OverflowOffset += RoundUpToAlignment(ArgSize, 8);
         }
         IRB.CreateAlignedStore(MSV.getShadow(A), Base, kShadowTLSAlignment);
       }