[PATCH] D33198: Header file to help forcibly link GPURuntime

[Singapuram Sanjay Srivallabh via Phabricator via llvm-commits]

singam-sanjay updated this revision to Diff 99895.
singam-sanjay added a comment.

Not pulling in entire GPUJIT anymore.


Repository:
  rL LLVM

https://reviews.llvm.org/D33198

Files:
  CMakeLists.txt
  include/polly/Support/LinkGPURuntime.h


Index: include/polly/Support/LinkGPURuntime.h
===================================================================
--- /dev/null
+++ include/polly/Support/LinkGPURuntime.h
@@ -0,0 +1,45 @@
+//===- Support/LinkGPURuntime.h -- Headerfile to help force-link GPURuntime --------------------===//
+//////
+//////                     The LLVM Compiler Infrastructure
+//////
+////// This file is distributed under the University of Illinois Open Source
+////// License. See LICENSE.TXT for details.
+//////
+//////===----------------------------------------------------------------------===//
+//////
+////// This header helps pull in libGPURuntime.so
+//////
+//////===----------------------------------------------------------------------===//
+//////
+//
+#ifndef POLLY_LINK_GPURUNTIME
+#define POLLY_LINK_GPURUNTIME
+
+extern "C" {
+#include "GPURuntime/GPUJIT.h"
+}
+
+namespace polly {
+  struct ForceGPURuntimeLinking {
+    ForceGPURuntimeLinking() {
+      if (std::getenv("bar") != (char*) -1)
+        return;
+      // We must reference GPURuntime in such a way that compilers will not
+      // delete it all as dead code, even with whole program optimization,
+      // yet is effectively a NO-OP. As the compiler isn't smart enough
+      // to know that getenv() never returns -1, this will do the job.
+      polly_initContextCL();
+      polly_initContextCUDA();
+      polly_getKernel(nullptr, nullptr);
+      polly_freeKernel(nullptr);
+      polly_copyFromHostToDevice(nullptr, nullptr, 0);
+      polly_copyFromDeviceToHost(nullptr, nullptr, 0);
+      polly_synchronizeDevice();
+      polly_launchKernel(nullptr, 0, 0, 0, 0, 0, nullptr);
+      polly_freeDeviceMemory(nullptr);
+      polly_freeContext(nullptr);
+      polly_synchronizeDevice();
+    }
+  } structure;
+}
+#endif
Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -206,6 +206,7 @@
   ${JSONCPP_INCLUDE_DIRS}
   ${CMAKE_CURRENT_SOURCE_DIR}/lib/External/pet/include
   ${CMAKE_CURRENT_SOURCE_DIR}/lib/External
+  ${CMAKE_CURRENT_SOURCE_DIR}/tools
   ${CMAKE_CURRENT_BINARY_DIR}/include
   )
 


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