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[PATCH] Add TODO_update_ssa for SLP BB vectorization (PR tree-optimization/91885).


Hi.

Similarly to SLP pass, we should probably set TODO_update_ssa
when a SLP BB vectorization happens from the normal vect pass.

Patch can bootstrap on x86_64-linux-gnu and survives regression tests.

Ready to be installed?
Thanks,
Martin

gcc/ChangeLog:

2019-09-25  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/91885
	* tree-vectorizer.c (try_vectorize_loop_1):
	Add TODO_update_ssa similarly to what slp
	pass does.

gcc/testsuite/ChangeLog:

2019-09-25  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/91885
	* gcc.dg/pr91885.c: New test.
---
 gcc/testsuite/gcc.dg/pr91885.c | 47 ++++++++++++++++++++++++++++++++++
 gcc/tree-vectorizer.c          |  2 +-
 2 files changed, 48 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.dg/pr91885.c


diff --git a/gcc/testsuite/gcc.dg/pr91885.c b/gcc/testsuite/gcc.dg/pr91885.c
new file mode 100644
index 00000000000..934e8d3e6c3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr91885.c
@@ -0,0 +1,47 @@
+/* { dg-do compile } */
+/* { dg-options "-O3 -fprofile-generate" } */
+/* { dg-require-profiling "-fprofile-generate" } */
+
+typedef signed long int __int64_t;
+typedef unsigned long int __uint64_t;
+typedef __int64_t int64_t;
+typedef __uint64_t uint64_t;
+inline void
+BLI_endian_switch_int64 (int64_t *val)
+{
+  uint64_t tval = *val;
+  *val = ((tval >> 56)) | ((tval << 40) & 0x00ff000000000000ll)
+	 | ((tval << 24) & 0x0000ff0000000000ll)
+	 | ((tval << 8) & 0x000000ff00000000ll)
+	 | ((tval >> 8) & 0x00000000ff000000ll)
+	 | ((tval >> 24) & 0x0000000000ff0000ll)
+	 | ((tval >> 40) & 0x000000000000ff00ll) | ((tval << 56));
+}
+typedef struct anim_index_entry
+{
+  unsigned long long seek_pos_dts;
+  unsigned long long pts;
+} anim_index_entry;
+extern struct anim_index_entry *
+MEM_callocN (int);
+struct anim_index
+{
+  int num_entries;
+  struct anim_index_entry *entries;
+};
+struct anim_index *
+IMB_indexer_open (const char *name)
+{
+  char header[13];
+  struct anim_index *idx;
+  int i;
+  idx->entries = MEM_callocN (8);
+  if (((1 == 0) != (header[8] == 'V')))
+    {
+      for (i = 0; i < idx->num_entries; i++)
+	{
+	  BLI_endian_switch_int64 ((int64_t *) &idx->entries[i].seek_pos_dts);
+	  BLI_endian_switch_int64 ((int64_t *) &idx->entries[i].pts);
+	}
+    }
+}
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index c3004f6f3a2..b3da0a16dc0 100644
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -943,7 +943,7 @@ try_vectorize_loop_1 (hash_table<simduid_to_vf> *&simduid_to_vf_htab,
 	      fold_loop_internal_call (loop_vectorized_call,
 				       boolean_true_node);
 	      loop_vectorized_call = NULL;
-	      ret |= TODO_cleanup_cfg;
+	      ret |= TODO_cleanup_cfg | TODO_update_ssa;
 	    }
 	}
       /* If outer loop vectorization fails for LOOP_VECTORIZED guarded


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