3 Commits

Author	SHA1	Message	Date
David Majnemer	5116993f8e	Add support for __builtin_alloca_with_align ... __builtin_alloca always uses __BIGGEST_ALIGNMENT__ for the alignment of the allocation. __builtin_alloca_with_align allows the programmer to specify the alignment of the allocation. This fixes PR30658. llvm-svn: 285544	2016-10-31 05:37:48 +00:00
David Majnemer	1878da43ea	[CodeGen] Provide an appropriate alignment for dynamic allocas ... GCC documents __builtin_alloca as aligning the storage to at least __BIGGEST_ALIGNMENT__. MSVC documents essentially the same for the x64 ABI: https://msdn.microsoft.com/en-us/library/x9sx5da1.aspx The 32-bit ABI follows the same rule: it emits a call to _alloca_probe_16 Differential Revision: https://reviews.llvm.org/D24378 llvm-svn: 285316	2016-10-27 17:18:24 +00:00
Reid Kleckner	59e4a6f5e2	-fms-extensions: Recognize _alloca as an alias for the alloca builtin ... Differential Revision: http://llvm-reviews.chandlerc.com/D1989 llvm-svn: 194617	2013-11-13 22:58:53 +00:00