clover: Use unreachable() from util/macros.h instead of assert(0).

Reviewed-by: Francisco Jerez <currojerez@riseup.net>

src/gallium/state_trackers/clover/Makefile.am

@@ -6,6 +6,7 @@ AM_CPPFLAGS = \
 	$(GALLIUM_PIPE_LOADER_DEFINES) \
 	-DPIPE_SEARCH_DIR=\"$(libdir)/gallium-pipe\" \
 	-I$(top_srcdir)/include \
+	-I$(top_srcdir)/src \
 	-I$(top_srcdir)/src/gallium/include \
 	-I$(top_srcdir)/src/gallium/drivers \
 	-I$(top_srcdir)/src/gallium/auxiliary \

src/gallium/state_trackers/clover/core/device.cpp

@@ -70,8 +70,7 @@ device::type() const {
    case PIPE_LOADER_DEVICE_PLATFORM:
       return CL_DEVICE_TYPE_GPU;
    default:
-      assert(0);
-      return 0;
+      unreachable("Unknown device type.");
    }
 }
 
@@ -84,8 +83,7 @@ device::vendor_id() const {
    case PIPE_LOADER_DEVICE_PCI:
       return ldev->u.pci.vendor_id;
    default:
-      assert(0);
-      return 0;
+      unreachable("Unknown device type.");
    }
 }
 

src/gallium/state_trackers/clover/core/object.hpp

@@ -32,6 +32,7 @@
 #include "core/error.hpp"
 #include "core/property.hpp"
 #include "api/dispatch.hpp"
+#include "util/macros.h"
 
 ///
 /// Main namespace of the CL state tracker.