[CUDA] Copy host builtin types to NVPTXTargetInfo.

Summary:
Host and device types must match, otherwise when we pass values back and
forth between the host and device, we will get the wrong result.

This patch makes NVPTXTargetInfo inherit most of its type information
from the host's target info.

Reviewers: rsmith

Subscribers: cfe-commits, jhen, tra

Differential Revision: http://reviews.llvm.org/D19346

llvm-svn: 268131

1 files changed, 6 insertions, 0 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 4bef159f3bf..02a570076b9 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2155,6 +2155,12 @@ bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
       LangOpts.ObjCExceptions = 1;
   }
 
+  // During CUDA device-side compilation, the aux triple is the triple used for
+  // host compilation.
+  if (LangOpts.CUDA && LangOpts.CUDAIsDevice) {
+    Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
+  }
+
   // FIXME: Override value name discarding when asan or msan is used because the
   // backend passes depend on the name of the alloca in order to print out
   // names.