[Beignet] [PATCH 1/4 opencl 1.2] Add the -cl-kernel-arg-info into the clang build options

[junyan.he at inbox.com]

From: Junyan He <junyan.he at linux.intel.com>

We always add -cl-kernel-arg-info to the options. This option just generate
the arg information for the backend, no other side effect and does not have
performance issue.  So we just always add it here.

Signed-off-by: Junyan He <junyan.he at linux.intel.com>
---
 backend/src/CMakeLists.txt      | 2 +-
 backend/src/backend/program.cpp | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/backend/src/CMakeLists.txt b/backend/src/CMakeLists.txt
index 528595f..927c087 100644
--- a/backend/src/CMakeLists.txt
+++ b/backend/src/CMakeLists.txt
@@ -45,7 +45,7 @@ set (pch_object ${ocl_blob_file}.pch)
 set (local_pch_object ${ocl_blob_file}.local.pch)
 # generate pch object
 if (LLVM_VERSION_NODOT VERSION_GREATER 32)
-    set (clang_cmd -cc1 -x cl -triple spir -ffp-contract=off)
+    set (clang_cmd -cc1 -x cl -triple spir -ffp-contract=off -cl-kernel-arg-info)
 else (LLVM_VERSION_NODOT VERSION_GREATER 32)
     if (LLVM_VERSION_NODOT VERSION_GREATER 31)
         set (clang_cmd -cc1 -x cl -triple nvptx -ffp-contract=off)
diff --git a/backend/src/backend/program.cpp b/backend/src/backend/program.cpp
index 121e237..925f908 100644
--- a/backend/src/backend/program.cpp
+++ b/backend/src/backend/program.cpp
@@ -751,7 +751,12 @@ namespace gbe {
 
        So we just disable the PCH validation of Clang and do the judgement by ourself. */
 
-    if(options) {
+    /* We always add -cl-kernel-arg-info to the options. This option just generate the arg
+       information for the backend, no other side effect and does not have performance issue. */
+    if (!options || !strstr(const_cast<char *>(options), "-cl-kernel-arg-info"))
+      clOpt += "-cl-kernel-arg-info";
+
+    if (options) {
       char *p;
       /* FIXME: Though we can disable the pch valid check, and load pch successfully,
          but these language opts and pre-defined macro will still generate the diag msg
-- 
1.8.3.2