[OpenCL] Override supported OpenCL extensions with -cl-ext option
Summary:
This patch adds a command line option '-cl-ext' to control a set of
supported OpenCL extensions. Option accepts a comma-separated list
of extensions prefixed with '+' or '-'.
It can be used together with a target triple to override support for some
extensions:
// spir target supports all extensions, but we want to disable fp64
clang -cc1 -triple spir-unknown-unknown -cl-ext=-cl_khr_fp64
Special 'all' extension allows to enable or disable all possible
extensions:
// only fp64 will be supported
clang -cc1 -triple spir-unknown-unknown -cl-ext=-all,+cl_khr_fp64
Patch by asavonic (Andrew Savonichev).
Reviewers: joey, yaxunl
Subscribers: yaxunl, bader, Anastasia, cfe-commits
Differential Revision: https://reviews.llvm.org/D23712
llvm-svn: 285700
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index c4fa01c..ff22ed8 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2385,6 +2385,7 @@
// Use the default target triple if unspecified.
if (Opts.Triple.empty())
Opts.Triple = llvm::sys::getDefaultTargetTriple();
+ Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ);
}
bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,