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| author | Joerg Sonnenberger <joerg@bec.de> | 2016-09-30 20:16:01 +0000 |
|---|---|---|
| committer | Joerg Sonnenberger <joerg@bec.de> | 2016-09-30 20:16:01 +0000 |
| commit | 18a2fb2d2810328e008e9d89978fa55465a92118 (patch) | |
| tree | ca6132e44446bc6eab33981ef33419370fc5ad8a | |
| parent | a5c91d8eea45b7bb9c0a8ec5834e64e2f4ff00c2 (diff) | |
| download | bcm5719-llvm-18a2fb2d2810328e008e9d89978fa55465a92118.tar.gz bcm5719-llvm-18a2fb2d2810328e008e9d89978fa55465a92118.zip | |
Retire NEED_DEV_ZERO_FOR_MMAP. It should be needed only on outdated
systems. It wasn't even hooked up in cmake, so problems on such systems
would be visible with 3.9 release already.
llvm-svn: 282924
| -rw-r--r-- | llvm/include/llvm/Config/config.h.cmake | 4 | ||||
| -rw-r--r-- | llvm/lib/Support/Unix/Memory.inc | 16 |
2 files changed, 0 insertions, 20 deletions
diff --git a/llvm/include/llvm/Config/config.h.cmake b/llvm/include/llvm/Config/config.h.cmake index cc049ca713f..e0f68afa38c 100644 --- a/llvm/include/llvm/Config/config.h.cmake +++ b/llvm/include/llvm/Config/config.h.cmake @@ -450,10 +450,6 @@ /* Define to the extension used for shared libraries, say, ".so". */ #cmakedefine LTDL_SHLIB_EXT "${LTDL_SHLIB_EXT}" -/* Define if /dev/zero should be used when mapping RWX memory, or undefine if - its not necessary */ -#undef NEED_DEV_ZERO_FOR_MMAP - /* Define to the address where bug reports for this package should be sent. */ #cmakedefine PACKAGE_BUGREPORT "${PACKAGE_BUGREPORT}" diff --git a/llvm/lib/Support/Unix/Memory.inc b/llvm/lib/Support/Unix/Memory.inc index f3463e58173..88b2a28c3a1 100644 --- a/llvm/lib/Support/Unix/Memory.inc +++ b/llvm/lib/Support/Unix/Memory.inc @@ -91,14 +91,6 @@ Memory::allocateMappedMemory(size_t NumBytes, const size_t NumPages = (NumBytes+PageSize-1)/PageSize; int fd = -1; -#ifdef NEED_DEV_ZERO_FOR_MMAP - static int zero_fd = open("/dev/zero", O_RDWR); - if (zero_fd == -1) { - EC = std::error_code(errno, std::generic_category()); - return MemoryBlock(); - } - fd = zero_fd; -#endif int MMFlags = MAP_PRIVATE | #ifdef HAVE_MMAP_ANONYMOUS @@ -185,14 +177,6 @@ Memory::AllocateRWX(size_t NumBytes, const MemoryBlock* NearBlock, size_t NumPages = (NumBytes+PageSize-1)/PageSize; int fd = -1; -#ifdef NEED_DEV_ZERO_FOR_MMAP - static int zero_fd = open("/dev/zero", O_RDWR); - if (zero_fd == -1) { - MakeErrMsg(ErrMsg, "Can't open /dev/zero device"); - return MemoryBlock(); - } - fd = zero_fd; -#endif int flags = MAP_PRIVATE | #ifdef HAVE_MMAP_ANONYMOUS |
