[PATCH] tree-optimization/95856 fix vect_stmt_dominates_stmt_p at BB region boundary
Richard Biener
rguenther@suse.de
Wed Jun 24 10:58:30 GMT 2020
The following adjusts vect_stmt_dominates_stmt_p to honor out-of-region
stmts we run into which have UID -1u.
Bootstrapped / tested on x86_64-unknown-linux-gnu, applied.
Richard.
2020-06-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/95856
* tree-vectorizer.c (vect_stmt_dominates_stmt_p): Honor
region marker -1u.
* gcc.dg/vect/pr95856.c: New testcase.
---
gcc/testsuite/gcc.dg/vect/pr95856.c | 20 ++++++++++++++++++++
gcc/tree-vectorizer.c | 4 ++++
2 files changed, 24 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/vect/pr95856.c
diff --git a/gcc/testsuite/gcc.dg/vect/pr95856.c b/gcc/testsuite/gcc.dg/vect/pr95856.c
new file mode 100644
index 00000000000..19a86a62d95
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr95856.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+
+typedef struct {
+ float xmin, xmax;
+} rctf;
+
+typedef struct {
+ rctf tot;
+} View2D;
+
+View2D graph_main_area_draw_v2d;
+
+void get_graph_keyframe_extents();
+
+void
+graph_main_area_draw() {
+ get_graph_keyframe_extents();
+ graph_main_area_draw_v2d.tot.xmin -= 10.0f;
+ graph_main_area_draw_v2d.tot.xmax += 10.0f;
+}
diff --git a/gcc/tree-vectorizer.c b/gcc/tree-vectorizer.c
index e262ba0580e..78d9da689c8 100644
--- a/gcc/tree-vectorizer.c
+++ b/gcc/tree-vectorizer.c
@@ -752,6 +752,8 @@ vect_stmt_dominates_stmt_p (gimple *s1, gimple *s2)
if (gsi_stmt (gsi1) == s2)
return true;
}
+ if (gimple_uid (gsi_stmt (gsi1)) == -1u)
+ return false;
gimple_stmt_iterator gsi2 = gsi_for_stmt (s2);
while (gimple_uid (gsi_stmt (gsi2)) == 0)
@@ -762,6 +764,8 @@ vect_stmt_dominates_stmt_p (gimple *s1, gimple *s2)
if (gsi_stmt (gsi2) == s1)
return true;
}
+ if (gimple_uid (gsi_stmt (gsi2)) == -1u)
+ return false;
if (gimple_uid (gsi_stmt (gsi1)) <= gimple_uid (gsi_stmt (gsi2)))
return true;
--
2.26.2
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