From: Andreas Beckmann <anbe@debian.org>
Date: Mon, 4 Feb 2019 23:39:59 +0000 (+0000)
Subject: add support for a GENERIC cpu type that uses llvm defaults
X-Git-Tag: archive/raspbian/1.6-3+rpi1~1^2^2~6
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=8b6f4bea910dae36f9e04cba817bc61f98eb806f;p=pocl.git

add support for a GENERIC cpu type that uses llvm defaults


Gbp-Pq: Name generic-cpu.patch
---

diff --git a/cmake/LLVM.cmake b/cmake/LLVM.cmake
index 3b511a0..0ffdb9b 100644
--- a/cmake/LLVM.cmake
+++ b/cmake/LLVM.cmake
@@ -711,17 +711,25 @@ endif()
 
 if(NOT DEFINED ${CLANG_MARCH_FLAG})
   message(STATUS "Checking clang -march vs. -mcpu flag")
-  custom_try_compile_clang_silent("" "return 0;" RES ${CLANG_TARGET_OPTION}${LLC_TRIPLE} -march=${LLC_HOST_CPU})
+ if(LLC_HOST_CPU STREQUAL "GENERIC" AND NOT KERNELLIB_HOST_CPU_VARIANTS STREQUAL "distro")
+  set(CLANG_MARCH_FLAG "-None=")
+ else()
+  set(LLC_HOST_CPU_TEST "${LLC_HOST_CPU}")
+  if(LLC_HOST_CPU STREQUAL "GENERIC")
+    set(LLC_HOST_CPU_TEST "${LLC_HOST_CPU_AUTO}")
+  endif()
+  custom_try_compile_clang_silent("" "return 0;" RES ${CLANG_TARGET_OPTION}${LLC_TRIPLE} -march=${LLC_HOST_CPU_TEST})
   if(NOT RES)
     set(CLANG_MARCH_FLAG "-march=")
   else()
-    custom_try_compile_clang_silent("" "return 0;" RES ${CLANG_TARGET_OPTION}${LLC_TRIPLE} -mcpu=${LLC_HOST_CPU})
+    custom_try_compile_clang_silent("" "return 0;" RES ${CLANG_TARGET_OPTION}${LLC_TRIPLE} -mcpu=${LLC_HOST_CPU_TEST})
     if(NOT RES)
       set(CLANG_MARCH_FLAG "-mcpu=")
     else()
       message(FATAL_ERROR "Could not determine whether to use -march or -mcpu with clang")
     endif()
   endif()
+ endif()
 
   set(CLANG_MARCH_FLAG ${CLANG_MARCH_FLAG} CACHE INTERNAL "Clang option used to specify the target cpu")
 endif()
diff --git a/lib/CL/devices/basic/basic.c b/lib/CL/devices/basic/basic.c
index ee3c6ca..84b1b7a 100644
--- a/lib/CL/devices/basic/basic.c
+++ b/lib/CL/devices/basic/basic.c
@@ -350,6 +350,9 @@ pocl_init_cpu_device_infos (cl_device_id dev)
   if(dev->llvm_cpu && (!strcmp(dev->llvm_cpu, "(unknown)")))
     dev->llvm_cpu = OCL_KERNEL_TARGET_CPU;
 
+  if(dev->llvm_cpu && (!strcmp(dev->llvm_cpu, "GENERIC")))
+    dev->llvm_cpu = NULL;
+
 #else /* No compiler, no CPU info */
   dev->llvm_cpu = NULL;
   dev->llvm_target_triplet = "";
diff --git a/lib/CL/pocl_llvm_build.cc b/lib/CL/pocl_llvm_build.cc
index c2b4244..57ae983 100644
--- a/lib/CL/pocl_llvm_build.cc
+++ b/lib/CL/pocl_llvm_build.cc
@@ -840,7 +840,7 @@ kernel_library
       kernellib += getX86KernelLibName();
     else
 #endif
-      kernellib += device->llvm_cpu;
+      kernellib += device->llvm_cpu ? device->llvm_cpu : "GENERIC";
   }
   kernellib += ".bc";
 
diff --git a/lib/kernel/host/CMakeLists.txt b/lib/kernel/host/CMakeLists.txt
index b4f86ef..ffb9e63 100644
--- a/lib/kernel/host/CMakeLists.txt
+++ b/lib/kernel/host/CMakeLists.txt
@@ -224,6 +224,11 @@ else()
   set(LLC_CPUFLAGS "-mcpu=${VARIANT}")
 endif()
 
+if("${VARIANT}" STREQUAL "GENERIC")
+  set(CLANG_CPUFLAGS "")
+  set(LLC_CPUFLAGS "")
+endif()
+
 separate_arguments(CLANG_CPUFLAGS)
 separate_arguments(LLC_CPUFLAGS)
 set(CLANG_FLAGS ${HOST_CLANG_FLAGS} ${CLANG_CPUFLAGS}