Remove support for WinRT 8.1 and Windows Phone 8.1

Task-number: QTBUG-57288
Change-Id: Id106f09dc824fbd95780dc5b479e16802d183e57
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

src/3rdparty/masm/stubs/ExecutableAllocator.h

@@ -39,11 +39,6 @@
 #ifndef MASM_EXECUTABLEALLOCATOR_H
 #define MASM_EXECUTABLEALLOCATOR_H
 
-// Defined via mkspec
-#if _MSC_VER >= 1900
-#include <windows.h>
-#endif
-
 #include <RefPtr.h>
 #include <RefCounted.h>
 #include <wtf/PageBlock.h>
@@ -117,13 +112,11 @@ struct ExecutableAllocator {
         DWORD oldProtect;
 #    if !OS(WINRT)
         VirtualProtect(addr, size, PAGE_READWRITE, &oldProtect);
-#    elif _MSC_VER >= 1900
+#    else
         bool hr = VirtualProtectFromApp(addr, size, PAGE_READWRITE, &oldProtect);
         if (!hr) {
             Q_UNREACHABLE();
         }
-#    else
-        (void)oldProtect;
 #    endif
 #  else
         int mode = PROT_READ | PROT_WRITE;
@@ -152,13 +145,11 @@ struct ExecutableAllocator {
         DWORD oldProtect;
 #    if !OS(WINRT)
         VirtualProtect(addr, size, PAGE_EXECUTE_READ, &oldProtect);
-#    elif _MSC_VER >= 1900
+#    else
         bool hr = VirtualProtectFromApp(addr, size, PAGE_EXECUTE_READ, &oldProtect);
         if (!hr) {
             Q_UNREACHABLE();
         }
-#    else
-        (void)oldProtect;
 #    endif
 #  else
         int mode = PROT_READ | PROT_EXEC;

src/3rdparty/masm/wtf/OSAllocatorWinRT.cpp

@@ -32,19 +32,8 @@
 #include "windows.h"
 #include <wtf/Assertions.h>
 
-#if _MSC_VER >= 1900
 // Try to use JIT by default and fallback to non-JIT on first error
 static bool qt_winrt_use_jit = true;
-#else // _MSC_VER < 1900
-#  define PAGE_EXECUTE           0x10
-#  define PAGE_EXECUTE_READ      0x20
-#  define PAGE_EXECUTE_READWRITE 0x40
-#  define MEM_RELEASE 0x8000
-inline void* VirtualAllocFromApp(void*, size_t, int, int) { return 0; }
-inline bool VirtualProtectFromApp(void *, size_t, int, DWORD*) { return false; }
-inline bool VirtualFree(void *, size_t, DWORD) { return false; }
-static bool qt_winrt_use_jit = false;
-#endif // _MSC_VER < 1900
 
 namespace WTF {
 

src/qml/compiler/qv4compilationunitmapper_win.cpp

@@ -75,7 +75,6 @@ CompiledData::Unit *CompilationUnitMapper::open(const QString &cacheFileName, co
         CloseHandle(handle);
     });
 
-#if !defined(Q_OS_WINRT) || _MSC_VER >= 1900
     CompiledData::Unit header;
     DWORD bytesRead;
     if (!ReadFile(handle, reinterpret_cast<char *>(&header), sizeof(header), &bytesRead, nullptr)) {
@@ -115,19 +114,12 @@ CompiledData::Unit *CompilationUnitMapper::open(const QString &cacheFileName, co
     }
 
     return reinterpret_cast<CompiledData::Unit*>(dataPtr);
-#else
-    Q_UNUSED(sourcePath);
-    *errorString = QStringLiteral("Compilation unit mapping not supported on WinRT 8.1");
-    return nullptr;
-#endif
 }
 
 void CompilationUnitMapper::close()
 {
-#if !defined(Q_OS_WINRT) || _MSC_VER >= 1900
     if (dataPtr != nullptr)
         UnmapViewOfFile(dataPtr);
-#endif
     dataPtr = nullptr;
 }
 

src/qml/qml/qqmlengine.cpp

@@ -443,7 +443,6 @@ The following functions are also on the Qt object.
         \li \c "unix" - Other Unix-based OS
         \li \c "windows" - Windows
         \li \c "winrt" - WinRT / UWP
-        \li \c "winphone" - Windows Phone
     \endlist
     \endtable
 */

src/qml/qml/qqmlplatform.cpp

@@ -65,8 +65,6 @@ QString QQmlPlatform::os()
     return QStringLiteral("tvos");
 #elif defined(Q_OS_MAC)
     return QStringLiteral("osx");
-#elif defined(Q_OS_WINPHONE)
-    return QStringLiteral("winphone");
 #elif defined(Q_OS_WINRT)
     return QStringLiteral("winrt");
 #elif defined(Q_OS_WIN)