Add nvptx_override_options_after_change

2017-07-21  Tom de Vries  <tom@codesourcery.com>

	PR lto/81430
	* config/nvptx/nvptx.c (nvptx_override_options_after_change): New
	function.
	(TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): Define to
	nvptx_override_options_after_change.

From-SVN: r250421

gcc/ChangeLog

+2017-07-21  Tom de Vries  <tom@codesourcery.com>
+
+	PR lto/81430
+	* config/nvptx/nvptx.c (nvptx_override_options_after_change): New
+	function.
+	(TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): Define to
+	nvptx_override_options_after_change.
+
 2017-07-21  Ulrich Drepper  <drepper@redhat.com>
 
 	* dwarf2out.c (output_file_names): Avoid double testing for

gcc/config/nvptx/nvptx.c

@@ -207,6 +207,17 @@ nvptx_option_override (void)
     target_flags |= MASK_SOFT_STACK | MASK_UNIFORM_SIMT;
 }
 
+/* Implement TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE.  */
+
+static void
+nvptx_override_options_after_change (void)
+{
+  /* This is a workaround for PR81430 - nvptx acceleration compilation broken
+     because of running pass_partition_blocks.  This should be dealt with in the
+     common code, not in the target.  */
+  flag_reorder_blocks_and_partition = 0;
+}
+
 /* Return a ptx type for MODE.  If PROMOTE, then use .u32 for QImode to
    deal with ptx ideosyncracies.  */
 
@@ -5505,6 +5516,9 @@ nvptx_data_alignment (const_tree type, unsigned int basic_align)
 #undef TARGET_OPTION_OVERRIDE
 #define TARGET_OPTION_OVERRIDE nvptx_option_override
 
+#undef TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE
+#define TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE nvptx_override_options_after_change
+
 #undef TARGET_ATTRIBUTE_TABLE
 #define TARGET_ATTRIBUTE_TABLE nvptx_attribute_table