[WebAssembly] Fix windows compiler warning by using explicit 64bit shift. NFC.

[msearles]

Would you kindly apply the same fix to:

lld/trunk/wasm/Writer.cpp:694 :
MemoryPtr = alignTo(MemoryPtr, 1 << Seg->Alignment);

1 -> 1ULL

[sbc100]

• feedback

[msearles]

LGTM

lld/trunk/wasm/OutputSegment.h

 
 class OutputSegment {
 public:
   OutputSegment(StringRef N, uint32_t Index) : Name(N), Index(Index) {}
 
   void addInputSegment(InputSegment *InSeg) {
     Alignment = std::max(Alignment, InSeg->getAlignment());
     InputSegments.push_back(InSeg);
-    Size = llvm::alignTo(Size, 1 << InSeg->getAlignment());
+    Size = llvm::alignTo(Size, 1ULL << InSeg->getAlignment());
     InSeg->OutputSeg = this;
     InSeg->OutputSegmentOffset = Size;
     Size += InSeg->getSize();
   }
 
   StringRef Name;
   const uint32_t Index;
   uint32_t SectionOffset = 0;

lld/trunk/wasm/Writer.cpp

void Writer::layoutMemory() {
   // Arbitrarily set __dso_handle handle to point to the start of the data
   // segments.
   if (WasmSym::DsoHandle)
     WasmSym::DsoHandle->setVirtualAddress(DataStart);
 
   MemAlign = 0;
   for (OutputSegment *Seg : Segments) {
     MemAlign = std::max(MemAlign, Seg->Alignment);
-    MemoryPtr = alignTo(MemoryPtr, 1 << Seg->Alignment);
+    MemoryPtr = alignTo(MemoryPtr, 1ULL << Seg->Alignment);
     Seg->StartVA = MemoryPtr;
     log(formatv("mem: {0,-15} offset={1,-8} size={2,-8} align={3}", Seg->Name,
                 MemoryPtr, Seg->Size, Seg->Alignment));
     MemoryPtr += Seg->Size;
   }
 
   // TODO: Add .bss space here.
   if (WasmSym::DataEnd)