From 0ec77a6c25cbe321d9712e41a3aa04dff97eaaa6 Mon Sep 17 00:00:00 2001
From: Tamar Christina <tamar.christina@arm.com>
Date: Mon, 4 Nov 2019 19:25:20 +0000
Subject: [PATCH] SLP: Initialize variable to fix bootstrap after r277784.
This initializes the rstmt variable with NULL and adds an assert to
check that a value has been given by one of the if cases before use.
This fixes the bootstrap failure due to -Werror.
Committed under the gcc obvious rule.
gcc/ChangeLog:
* tree-vect-slp.c (vectorize_slp_instance_root_stmt): Initialize rstmt.
From-SVN: r277788
---
gcc/ChangeLog | 4 ++++
gcc/tree-vect-slp.c | 5 ++++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b8b120d96ffc..f29939a0dd8f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2019-11-04 Tamar Christina <tamar.christina@arm.com>
+
+ * tree-vect-slp.c (vectorize_slp_instance_root_stmt): Initialize rstmt.
+
2019-11-04 Martin Sebor <msebor@redhat.com>
PR tree-optimization/92349
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index 5549d053bf3c..f4b445ac1ef9 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -4149,7 +4149,7 @@ vect_remove_slp_scalar_calls (slp_tree node)
void
vectorize_slp_instance_root_stmt (slp_tree node, slp_instance instance)
{
- gassign *rstmt;
+ gassign *rstmt = NULL;
if (SLP_TREE_NUMBER_OF_VEC_STMTS (node) == 1)
{
@@ -4183,6 +4183,9 @@ vectorize_slp_instance_root_stmt (slp_tree node, slp_instance instance)
tree r_constructor = build_constructor (rtype, v);
rstmt = gimple_build_assign (lhs, r_constructor);
}
+
+ gcc_assert (rstmt);
+
gimple_stmt_iterator rgsi = gsi_for_stmt (instance->root_stmt->stmt);
gsi_replace (&rgsi, rstmt, true);
}
--
GitLab