4 Commits

Author	SHA1	Message	Date
Justin Lebar	e56360a2cd	[CUDA] Align kernel launch args correctly when the LLVM type's alignment is different from the clang type's alignment. ... Summary: Before this patch, we computed the offsets in memory of args passed to GPU kernel functions by throwing all of the args into an LLVM struct. clang emits packed llvm structs basically whenever it feels like it, and packed structs have alignment 1. So we cannot rely on the llvm type's alignment matching the C++ type's alignment. This patch fixes our codegen so we always respect the clang types' alignments. Reviewers: rnk Subscribers: cfe-commits, tra Differential Revision: https://reviews.llvm.org/D22879 llvm-svn: 276927	2016-07-27 22:36:21 +00:00
Justin Lebar	9a2c0fbaf5	[CUDA] Don't crash when trying to printf a non-scalar object. ... Summary: We can't do the right thing, since there's no right thing to do, but at least we can not crash the compiler. Reviewers: majnemer, rnk Subscribers: cfe-commits, jhen, tra Differential Revision: http://reviews.llvm.org/D17103 llvm-svn: 260479	2016-02-11 02:00:52 +00:00
Justin Lebar	c0e42750da	[CUDA] Generate CUDA's printf alloca in its function's entry block. ... Summary: This is necessary to prevent llvm from generating stacksave intrinsics around this alloca. NVVM doesn't have a stack, and we don't handle said intrinsics. Reviewers: rnk, echristo Subscribers: cfe-commits, jhen, tra Differential Revision: http://reviews.llvm.org/D16664 llvm-svn: 259122	2016-01-28 23:58:28 +00:00
Justin Lebar	3039a593db	[CUDA] Make printf work. ... Summary: The code in CGCUDACall is largely based on a patch written by Eli Bendersky: http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20140324/210218.html That patch implemented an LLVM pass lowering printf to vprintf; this one does something similar, but in Clang codegen. Reviewers: echristo Subscribers: cfe-commits, jhen, tra, majnemer Differential Revision: http://reviews.llvm.org/D16372 llvm-svn: 258642	2016-01-23 21:28:14 +00:00