Implement the basics of separate Compilation and Linking (v1.2 feature)

Separate the Program::build() method into separate ::compile() and link()
phases.

Implement basic clCompileProgram() and clLinkProgram() APIs, and export
via ICD table.

This commit allows the following Khronos v1.2 tests to pass:

% test_compiler simple_link_only
% test_compiler simple_link_with_callback
% test_compiler two_file_link
% test_compiler multiple_files

The last test validates linking 256 files together.

Signed-off-by: Gil Pitney <gil.pitney@linaro.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/core/icd.cpp b/src/core/icd.cpp
index dab415f..1d3cf4b 100644
--- a/src/core/icd.cpp
+++ b/src/core/icd.cpp
@@ -127,10 +127,10 @@ void * dispatch_table[] =
     (void *)  0, //clCreateSubDevices;
     (void *)  0, //clRetainDevice;
     (void *)  0, //clReleaseDevice;
-    (void *)  0, // clCreateImage,
+    (void *)  clCreateImage,
     (void *)  0, // clCreateProgramWithBuiltInKernels;
-    (void *)  0, // clCompileProgram;
-    (void *)  0, // clLinkProgram;
+    (void *)  clCompileProgram,
+    (void *)  clLinkProgram,
     (void *)  0, // clUnloadPlatformCompiler;
     (void *)  clGetKernelArgInfo,
     (void *)  0, // clEnqueueFillBuffer;