HSA: handle alignment of string builtins (PR hsa/70391)

	PR hsa/70391
	* hsa-gen.c (hsa_function_representation::update_dominance): New
	function.
	(convert_addr_to_flat_segment): Likewise.
	(gen_hsa_memory_set): New alignment argument.
	(gen_hsa_ctor_assignment): Likewise.
	(gen_hsa_insns_for_single_assignment): Provide alignment
	to gen_hsa_ctor_assignment.
	(gen_hsa_insns_for_direct_call): Add new argument.
	(expand_lhs_of_string_op): New function.
	(expand_string_operation_builtin): Likewise.
	(expand_memory_copy): New function.
	(expand_memory_set): New function.
	(gen_hsa_insns_for_call): Use HOST_WIDE_INT.
	(convert_switch_statements): Change signature.
	(generate_hsa): Use a return value of the function.
	(pass_gen_hsail::execute): Do not call
	convert_switch_statements here.
	* hsa-regalloc.c (hsa_regalloc): Call update_dominance.
	* hsa.h (hsa_function_representation::m_modified_cfg):
	New flag.
	(hsa_function_representation::update_dominance): New function.

From-SVN: r234644

gcc/ChangeLog

 2016-03-31  Martin Liska  <mliska@suse.cz>
 
 	PR hsa/70391
+	* hsa-gen.c (hsa_function_representation::update_dominance): New
+	function.
+	(convert_addr_to_flat_segment): Likewise.
+	(gen_hsa_memory_set): New alignment argument.
+	(gen_hsa_ctor_assignment): Likewise.
+	(gen_hsa_insns_for_single_assignment): Provide alignment
+	to gen_hsa_ctor_assignment.
+	(gen_hsa_insns_for_direct_call): Add new argument.
+	(expand_lhs_of_string_op): New function.
+	(expand_string_operation_builtin): Likewise.
+	(expand_memory_copy): New function.
+	(expand_memory_set): New function.
+	(gen_hsa_insns_for_call): Use HOST_WIDE_INT.
+	(convert_switch_statements): Change signature.
+	(generate_hsa): Use a return value of the function.
+	(pass_gen_hsail::execute): Do not call
+	convert_switch_statements here.
+	* hsa-regalloc.c (hsa_regalloc): Call update_dominance.
+	* hsa.h (hsa_function_representation::m_modified_cfg):
+	New flag.
+	(hsa_function_representation::update_dominance): New function.
+
+2016-03-31  Martin Liska  <mliska@suse.cz>
+
+	PR hsa/70391
 	* hsa-brig.c (emit_directive_variable): Emit alignment
 	according to hsa_symbol::m_align.
 	* hsa-dump.c (hsa_byte_alignment): Move the function to

gcc/hsa-regalloc.c

@@ -700,6 +700,7 @@ regalloc (void)
 void
 hsa_regalloc (void)
 {
+  hsa_cfun->update_dominance ();
   naive_outof_ssa ();
 
   if (dump_file && (dump_flags & TDF_DETAILS))

gcc/hsa.h

@@ -1123,7 +1123,8 @@ class hsa_function_representation
 {
 public:
   hsa_function_representation (tree fdecl, bool kernel_p,
-			       unsigned ssa_names_count);
+			       unsigned ssa_names_count,
+			       bool modified_cfg = false);
   hsa_function_representation (hsa_internal_fn *fn);
   ~hsa_function_representation ();
 
@@ -1139,6 +1140,9 @@ public:
      so we need hsa_bb instances of them.  */
   void init_extra_bbs ();
 
+  /* Update CFG dominators if m_modified_cfg flag is set.  */
+  void update_dominance ();
+
   /* Return linkage of the representation.  */
   BrigLinkage8_t get_linkage ();
 
@@ -1219,6 +1223,9 @@ public:
 
   /* SSA names mapping.  */
   vec <hsa_op_reg_p> m_ssa_map;
+
+  /* Flag whether a function needs update of dominators before RA.  */
+  bool m_modified_cfg;
 };
 
 enum hsa_function_kind