When printing types for the OpenCL kernel metadata, use the PrintingPolicy.

This allows 'half' to be printed as 'half' and not as '__fp16'.

Patch by Fraser Cormack!

llvm-svn: 205624

Author: jgouly

clang/lib/CodeGen/CodeGenFunction.cpp

@@ -339,6 +339,8 @@ static void GenOpenCLArgMetadata(const FunctionDecl *FD, llvm::Function *Fn,
   // Each MDNode is a list in the form of "key", N number of values which is
   // the same number of values as their are kernel arguments.
 
+  const PrintingPolicy &Policy = ASTCtx.getPrintingPolicy();
+
   // MDNode for the kernel argument address space qualifiers.
   SmallVector<llvm::Value*, 8> addressQuals;
   addressQuals.push_back(llvm::MDString::get(Context, "kernel_arg_addr_space"));
@@ -372,7 +374,8 @@ static void GenOpenCLArgMetadata(const FunctionDecl *FD, llvm::Function *Fn,
         pointeeTy.getAddressSpace())));
 
       // Get argument type name.
-      std::string typeName = pointeeTy.getUnqualifiedType().getAsString() + "*";
+      std::string typeName =
+          pointeeTy.getUnqualifiedType().getAsString(Policy) + "*";
 
       // Turn "unsigned type" to "utype"
       std::string::size_type pos = typeName.find("unsigned");
@@ -398,7 +401,7 @@ static void GenOpenCLArgMetadata(const FunctionDecl *FD, llvm::Function *Fn,
       addressQuals.push_back(Builder.getInt32(AddrSpc));
 
       // Get argument type name.
-      std::string typeName = ty.getUnqualifiedType().getAsString();
+      std::string typeName = ty.getUnqualifiedType().getAsString(Policy);
 
       // Turn "unsigned type" to "utype"
       std::string::size_type pos = typeName.find("unsigned");

clang/test/CodeGenOpenCL/kernel-arg-info.cl

@@ -18,3 +18,11 @@ kernel void foo2(read_only image1d_t img1, image2d_t img2, write_only image2d_ar
 // CHECK: metadata !{metadata !"kernel_arg_type", metadata !"image1d_t", metadata !"image2d_t", metadata !"image2d_array_t"}
 // CHECK: metadata !{metadata !"kernel_arg_type_qual", metadata !"", metadata !"", metadata !""}
 // CHECK: metadata !{metadata !"kernel_arg_name", metadata !"img1", metadata !"img2", metadata !"img3"}
+
+kernel void foo3(__global half * X) {
+}
+// CHECK: metadata !{metadata !"kernel_arg_addr_space", i32 1}
+// CHECK: metadata !{metadata !"kernel_arg_access_qual", metadata !"none"}
+// CHECK: metadata !{metadata !"kernel_arg_type", metadata !"half*"}
+// CHECK: metadata !{metadata !"kernel_arg_type_qual", metadata !""}
+// CHECK: metadata !{metadata !"kernel_arg_name", metadata !"X"}