RenderScript support in the Frontend

Summary:

Create a new Frontend LangOpt to specify the renderscript language. It
is enabled by the "-x renderscript" option from the driver.

Add a "kernel" function attribute only for RenderScript (an "ignored
attribute" warning is generated otherwise).

Make the NativeHalfType and NativeHalfArgsAndReturns LangOpts be implied
by the RenderScript LangOpt.

Reviewers: rsmith

Subscribers: cfe-commits, srhines

Differential Revision: http://reviews.llvm.org/D21198

llvm-svn: 272342

1 files changed, 10 insertions, 0 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index a948653ee72..b217db96c7e 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -1292,6 +1292,7 @@ static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
       .Case("objective-c++-header", IK_ObjCXX)
       .Cases("ast", "pcm", IK_AST)
       .Case("ir", IK_LLVM_IR)
+      .Case("renderscript", IK_RenderScript)
       .Default(IK_None);
     if (DashX == IK_None)
       Diags.Report(diag::err_drv_invalid_value)
@@ -1495,6 +1496,9 @@ void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
     case IK_PreprocessedObjCXX:
       LangStd = LangStandard::lang_gnucxx98;
       break;
+    case IK_RenderScript:
+      LangStd = LangStandard::lang_c99;
+      break;
     }
   }
 
@@ -1537,6 +1541,12 @@ void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
   Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda ||
               LangStd == LangStandard::lang_cuda;
 
+  Opts.RenderScript = IK == IK_RenderScript;
+  if (Opts.RenderScript) {
+    Opts.NativeHalfType = 1;
+    Opts.NativeHalfArgsAndReturns = 1;
+  }
+
   // OpenCL and C++ both have bool, true, false keywords.
   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;