re PR target/72851 (memory hog with -O3 on s390x-linux-gnu)

2016-08-12  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/72851
	* tree-ssa-propagate.c: Include cfganal.h.  Rewrite block and stmt
	worklists to use bitmaps indexed in execution order.
	(executable_blocks, cfg_blocks_num, cfg_blocks_tail, cfg_blocks_head,
	bb_in_list, interesting_ssa_edges, varying_ssa_edges): Remove.
	(cfg_blocks): Make a bitmap.
	(bb_to_cfg_order, cfg_order_to_bb, ssa_edge_worklist, uid_to_stmt):
	New globals.
	(cfg_blocks_empty_p): Adjust.
	(cfg_blocks_add): Likewise.
	(cfg_blocks_get): Likewise.
	(add_ssa_edge): Likewise.
	(add_control_edge): Likewise.
	(simulate_stmt): Likewise.
	(process_ssa_edge_worklist): Likewise.
	(simulate_block): Likewise.
	(ssa_prop_init): Compute PRE order and stmt UIDs.
	(ssa_prop_fini): Adjust.
	(ssa_propagate): Adjust.

	* gcc.dg/torture/pr72851.c: New testcase.

From-SVN: r239405

gcc/ChangeLog

 2016-08-12  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/72851
+	* tree-ssa-propagate.c: Include cfganal.h.  Rewrite block and stmt
+	worklists to use bitmaps indexed in execution order.
+	(executable_blocks, cfg_blocks_num, cfg_blocks_tail, cfg_blocks_head,
+	bb_in_list, interesting_ssa_edges, varying_ssa_edges): Remove.
+	(cfg_blocks): Make a bitmap.
+	(bb_to_cfg_order, cfg_order_to_bb, ssa_edge_worklist, uid_to_stmt):
+	New globals.
+	(cfg_blocks_empty_p): Adjust.
+	(cfg_blocks_add): Likewise.
+	(cfg_blocks_get): Likewise.
+	(add_ssa_edge): Likewise.
+	(add_control_edge): Likewise.
+	(simulate_stmt): Likewise.
+	(process_ssa_edge_worklist): Likewise.
+	(simulate_block): Likewise.
+	(ssa_prop_init): Compute PRE order and stmt UIDs.
+	(ssa_prop_fini): Adjust.
+	(ssa_propagate): Adjust.
+
+2016-08-12  Richard Biener  <rguenther@suse.de>
+
 	* tree-vrp.c (vrp_visit_phi_node): Allow a last iteration if
 	the currently executable edges have fixed ranges.  Always
 	go through update_value_range.

gcc/testsuite/ChangeLog

+2016-08-12  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/72851
+	* gcc.dg/torture/pr72851.c: New testcase.
+
 2016-08-12  Alexandre Oliva <aoliva@redhat.com>
 
 	PR debug/63240

gcc/testsuite/gcc.dg/torture/pr72851.c

+/* { dg-do compile } */
+
+typedef unsigned char uint8_t;
+typedef unsigned long int uint64_t;
+union unaligned_64 {
+    uint64_t l;
+}
+__attribute__((packed)) __attribute__((may_alias));
+typedef struct AVDES {
+    uint64_t round_keys[3][16];
+} AVDES;
+static const uint8_t PC1_shuffle[] = {
+    64-57,64-49,64-41,64-33,64-25,64-17,64-9,     64-1,64-58,64-50,64-42,64-34,64-26,64-18,     64-10,64-2,64-59,64-51,64-43,64-35,64-27,     64-19,64-11,64-3,64-60,64-52,64-44,64-36,     64-63,64-55,64-47,64-39,64-31,64-23,64-15,     64-7,64-62,64-54,64-46,64-38,64-30,64-22,     64-14,64-6,64-61,64-53,64-45,64-37,64-29,     64-21,64-13,64-5,64-28,64-20,64-12,64-4 };
+static const uint8_t PC2_shuffle[] = {
+    56-14,56-17,56-11,56-24,56-1,56-5,     56-3,56-28,56-15,56-6,56-21,56-10,     56-23,56-19,56-12,56-4,56-26,56-8,     56-16,56-7,56-27,56-20,56-13,56-2,     56-41,56-52,56-31,56-37,56-47,56-55,     56-30,56-40,56-51,56-45,56-33,56-48,     56-44,56-49,56-39,56-56,56-34,56-53,     56-46,56-42,56-50,56-36,56-29,56-32 };
+static uint64_t shuffle(uint64_t in, const uint8_t *shuffle, int shuffle_len)
+{
+  int i;
+  uint64_t res = 0;
+  for (i = 0; i < shuffle_len; i++)
+    res += res + ((in >> *shuffle++) & 1);
+  return res;
+}
+void gen_roundkeys(uint64_t K[16], uint64_t key)
+{
+  int i;
+  uint64_t CDn = shuffle(key, PC1_shuffle, sizeof(PC1_shuffle));
+  for (i = 0; i < 16; i++)
+    K[i] = shuffle(CDn, PC2_shuffle, sizeof(PC2_shuffle));
+}