Disable constant pool for nvptx

2017-06-11  Tom de Vries  <tom@codesourcery.com>

	PR target/79939
	* config/nvptx/nvptx.c (nvptx_cannot_force_const_mem): New function.
	Return true.
	(TARGET_CANNOT_FORCE_CONST_MEM): Redefine to
	nvptx_cannot_force_const_mem.

From-SVN: r249106

gcc/ChangeLog

+2017-06-11  Tom de Vries  <tom@codesourcery.com>
+
+	PR target/79939
+	* config/nvptx/nvptx.c (nvptx_cannot_force_const_mem): New function.
+	Return true.
+	(TARGET_CANNOT_FORCE_CONST_MEM): Redefine to
+	nvptx_cannot_force_const_mem.
+
 2017-06-10  Jan Hubicka  <hubicka@ucw.cz>
 
 	* opts.c (finish_options): Move test for flag_split_stack after

gcc/config/nvptx/nvptx.c

@@ -5328,6 +5328,13 @@ nvptx_goacc_reduction (gcall *call)
     }
 }
 
+static bool
+nvptx_cannot_force_const_mem (machine_mode mode ATTRIBUTE_UNUSED,
+			      rtx x ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
 #undef TARGET_OPTION_OVERRIDE
 #define TARGET_OPTION_OVERRIDE nvptx_option_override
 
@@ -5442,6 +5449,9 @@ nvptx_goacc_reduction (gcall *call)
 #undef TARGET_GOACC_REDUCTION
 #define TARGET_GOACC_REDUCTION nvptx_goacc_reduction
 
+#undef TARGET_CANNOT_FORCE_CONST_MEM
+#define TARGET_CANNOT_FORCE_CONST_MEM nvptx_cannot_force_const_mem
+
 struct gcc_target targetm = TARGET_INITIALIZER;
 
 #include "gt-nvptx.h"