[openmp] use generic ir

Author: ronlieb

flang-classic/17.0-4/llvm-classic/clang/lib/Driver/ToolChains/AMDGPUOpenMP.cpp

@@ -271,7 +271,7 @@ const char *amdgpu::dlr::getLinkCommandArgs(
   // the look-up of the libomptarget bc lib to happen and if not present
   // where it is expected it means we are using the build tree compiler
   // not the installed compiler.
-  std::string LibDeviceName = "/libomptarget-amdgpu-" + GPUArch.str() + ".bc";
+  std::string LibDeviceName = "/libomptarget-amdgpu.bc";
 
   // Check if the device library can be found in
   // one of the LIBRARY_PATH directories.

flang-classic/17.0-4/llvm-classic/clang/lib/Driver/ToolChains/CommonArgs.cpp

@@ -2609,8 +2609,8 @@ void tools::addOpenMPDeviceRTL(const Driver &D,
   StringRef ArchPrefix = Triple.isAMDGCN() ? "amdgpu" : "nvptx";
   std::string LibOmpTargetName =
       Triple.isAMDGCN()
-          ? ("libomptarget-old-amdgpu-" + BitcodeSuffix + ".bc").str()
-          : ("libomptarget-nvptx-" + BitcodeSuffix + ".bc").str();
+          ? ("libomptarget-old-amdgpu.bc")
+          : ("libomptarget-nvptx.bc");
 
   // First check whether user specifies bc library
   if (const Arg *A = DriverArgs.getLastArg(LibomptargetBCPathOpt)) {