Make the JIT code emitter properly retry and ask for more memory when it runs

out of memory, and also make the default memory manager allocate more memory
when it runs out.

Also, switch function stubs and global data over to using the BumpPtrAllocator.

This makes it so the JIT no longer mmaps (or the equivalent on Windows) 16 MB
of memory, and instead allocates in 512K slabs.  I suspect this size could go
lower, especially on embedded platforms, now that more slabs can be allocated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76828 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/System/Win32/Memory.inc b/lib/System/Win32/Memory.inc
index 5e5cf7a..7611ecd 100644
--- a/lib/System/Win32/Memory.inc
+++ b/lib/System/Win32/Memory.inc
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "Win32.h"
+#include "llvm/Support/DataTypes.h"
 #include "llvm/System/Process.h"
 
 namespace llvm {
@@ -23,13 +24,13 @@ using namespace sys;
 //===          and must not be UNIX code
 //===----------------------------------------------------------------------===//
 
-MemoryBlock Memory::AllocateRWX(unsigned NumBytes,
+MemoryBlock Memory::AllocateRWX(size_t NumBytes,
                                 const MemoryBlock *NearBlock,
                                 std::string *ErrMsg) {
   if (NumBytes == 0) return MemoryBlock();
 
-  static const long pageSize = Process::GetPageSize();
-  unsigned NumPages = (NumBytes+pageSize-1)/pageSize;
+  static const size_t pageSize = Process::GetPageSize();
+  size_t NumPages = (NumBytes+pageSize-1)/pageSize;
 
   //FIXME: support NearBlock if ever needed on Win64.