P4 to Git Change 1307198 by lmoriche@lmoriche_opencl_dev on 2016/08/25 12:39:46

SWDEV-1306648 - Add OptimizeLLVMBitcode to the ROCm-OpenCL-Driver. Call the optimizer in roc::HSAILProgram::linkImpl, between linking with the bitcode built-in libraries and code generation. Use the default optimization level, with at a minimum -strip -instcombine -always-inline.

Affected files ...

... //depot/stg/opencl/drivers/opencl/runtime/device/rocm/rocprogram.cpp#13 edit

rocclr/runtime/device/rocm/rocprogram.cpp

@@ -833,8 +833,32 @@ namespace roc {
             return false;
         }
 
+        // open the optimized output
+        Data* opt_bc = C->NewBuffer(DT_LLVM_BC);
+
+        if (!opt_bc) {
+            buildLog_ += "Error: Failed to open the optimized program.\n";
+            return false;
+        }
+
+        std::ostringstream optLevel;
+        optLevel << "-O" << options->oVariables->OptLevel;
+
+        std::vector<std::string> optOptions;
+        optOptions.push_back(optLevel.str());
+        optOptions.push_back("-strip");
+        optOptions.push_back("-instcombine");
+        optOptions.push_back("-always-inline");
+
+        ret = C->OptimizeLLVMBitcode(linked_bc, opt_bc, optOptions);
+        buildLog_ += C->Output();
+        if (!ret) {
+            buildLog_ += "Error: Optimizing bitcode failed: linking source & IR libraries.\n";
+            return false;
+        }
+
         inputs.clear();
-        inputs.push_back(linked_bc);
+        inputs.push_back(opt_bc);
 
         Buffer* out_exec = C->NewBuffer(DT_EXECUTABLE);
         if (!out_exec) {
@@ -848,9 +872,8 @@ namespace roc {
         optionsstr.append(" -mcpu=");
         optionsstr.append(dev().deviceInfo().machineTarget_);
 
-        std::ostringstream optLevel;
-        optLevel << " -O" << options->oVariables->OptLevel;
-        optionsstr.append(optLevel.str());
+        // Set the -O#
+        optionsstr.append(" ").append(optLevel.str());
 
         // Tokenize the options string into a vector of strings
         std::istringstream strstr(optionsstr);