Commit Graph

2 Commits

Author SHA1 Message Date
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