[CUDA] Add option to generate relocatable device code
As a first step, pass '-c/--compile-only' to ptxas so that it
doesn't complain about references to external function. This
will successfully generate object files, but they won't work
at runtime because the registration routines need to adapted.
Differential Revision: https://reviews.llvm.org/D42921
llvm-svn: 324878
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 95fd166..5b5c24d 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2074,6 +2074,8 @@
if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals))
Opts.CUDADeviceApproxTranscendentals = 1;
+ Opts.CUDARelocatableDeviceCode = Args.hasArg(OPT_fcuda_rdc);
+
if (Opts.ObjC1) {
if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
StringRef value = arg->getValue();