It's used by MS headers in VS 2017 without including intrin.h, so we
can't implement it in the header anymore.
Differential Revision: https://reviews.llvm.org/D31736
llvm-svn: 299782
__fastfail terminates the process immediately with a special system
call. It does not run any process shutdown code or exception recovery
logic.
Fixes PR31854
llvm-svn: 294606
Summary: We need `__stosb` to be an intrinsic, because SecureZeroMemory function uses it without including intrin.h. Implementing it as a volatile memset is not consistent with MSDN specification, but it gives us target-independent IR while keeping the most important properties of `__stosb`.
Reviewers: rnk, hans, thakis, majnemer
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D25334
llvm-svn: 284253
Summary: Previously global 64-bit versions of _Interlocked functions broke buildbots on i386, so now I'm adding them as builtins for x86-64 and ARM only (should they be also on AArch64? I had problems with testing it for AArch64, so I left it)
Reviewers: hans, majnemer, mstorsjo, rnk
Subscribers: cfe-commits, aemerson
Differential Revision: https://reviews.llvm.org/D25576
llvm-svn: 284172
Summary: _BitScan intrinsics (and some others, for example _Interlocked and _bittest) are supposed to work on both ARM and x86. This is an attempt to isolate them, avoiding repeating their code or writing separate function for each builtin.
Reviewers: hans, thakis, rnk, majnemer
Subscribers: RKSimon, cfe-commits, aemerson
Differential Revision: https://reviews.llvm.org/D25264
llvm-svn: 284060
Summary: We need x86-64-specific builtins if we want to implement some of the MS intrinsics - winnt.h contains definitions of some functions for i386, but not for x86-64 (for example _InterlockedOr64), which means that we cannot treat them as builtins for both i386 and x86-64, because then we have definitions of builtin functions in winnt.h on i386.
Reviewers: thakis, majnemer, hans, rnk
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D24598
llvm-svn: 283264
The Windows NT SDK uses __readfsdword and declares it as a compiler provided
builtin (#pragma intrinsic(__readfsword). Because intrin.h is not referenced
by winnt.h, it is not possible to provide an out-of-line definition for the
intrinsic. Provide a proper compiler builtin definition.
llvm-svn: 220859
Relax the tests to allow for differences between release and debug builds. This
should fix the buildbots.
Thanks to Benjamin Kramer and Eric Christo for their invaluable tip that this
was release build specific issue.
llvm-svn: 211227
Add support for _InterlockedCompareExchangePointer, _InterlockExchangePointer,
_InterlockExchange. These are available as a compiler intrinsic on ARM and x86.
These are used directly by the Windows SDK headers without use of the intrin
header.
llvm-svn: 211216
Hans Wennborg