Mercurial > hg > graal-jvmci-8
comparison src/os/windows/vm/os_windows.hpp @ 14436:b0133e4187d3
8028471: PPC64 (part 215): opto: Extend ImplicitNullCheck optimization.
Summary: Fixed Implicit NULL check optimization for AIX, where the page at address '0' is only write-protected.
Reviewed-by: kvn
| author | goetz |
|---|---|
| date | Thu, 21 Nov 2013 18:29:34 -0800 |
| parents | 5e3b6f79d280 |
| children | bb9356ec5967 0118c8c7b80f |
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| 14435:da862781b584 | 14436:b0133e4187d3 |
|---|---|
| 23 */ | 23 */ |
| 24 | 24 |
| 25 #ifndef OS_WINDOWS_VM_OS_WINDOWS_HPP | 25 #ifndef OS_WINDOWS_VM_OS_WINDOWS_HPP |
| 26 #define OS_WINDOWS_VM_OS_WINDOWS_HPP | 26 #define OS_WINDOWS_VM_OS_WINDOWS_HPP |
| 27 // Win32_OS defines the interface to windows operating systems | 27 // Win32_OS defines the interface to windows operating systems |
| 28 | |
| 29 // Information about the protection of the page at address '0' on this os. | |
| 30 static bool zero_page_read_protected() { return true; } | |
| 28 | 31 |
| 29 class win32 { | 32 class win32 { |
| 30 friend class os; | 33 friend class os; |
| 31 | 34 |
| 32 protected: | 35 protected: |