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authorRichard Biener <rguenther@suse.de>2019-10-28 13:43:49 +0000
committerRichard Biener <rguenth@gcc.gnu.org>2019-10-28 13:43:49 +0000
commit96d9d1620f28517de0464ab636662d9a35a92993 (patch)
tree8997511f65dcbe94251994abbd116166e15e5bc4 /gcc
parent97c6bea819ec0a773041308e62a7c05c33f093b0 (diff)
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re PR tree-optimization/92252 (ICE: Segmentation fault (in vect_stmt_to_vectorize))
2019-10-28 Richard Biener <rguenther@suse.de> PR tree-optimization/92252 * tree-vect-slp.c (vect_get_and_check_slp_defs): Adjust STMT_VINFO_REDUC_IDX when swapping operands. * gcc.dg/torture/pr92252.c: New testcase. From-SVN: r277517
Diffstat (limited to 'gcc')
-rw-r--r--gcc/ChangeLog6
-rw-r--r--gcc/testsuite/ChangeLog5
-rw-r--r--gcc/testsuite/gcc.dg/torture/pr92252.c23
-rw-r--r--gcc/tree-vect-slp.c4
4 files changed, 38 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9809040..c9daad9 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,11 @@
2019-10-28 Richard Biener <rguenther@suse.de>
+ PR tree-optimization/92252
+ * tree-vect-slp.c (vect_get_and_check_slp_defs): Adjust
+ STMT_VINFO_REDUC_IDX when swapping operands.
+
+2019-10-28 Richard Biener <rguenther@suse.de>
+
PR tree-optimization/92241
* tree-vect-loop.c (vect_fixup_scalar_cycles_with_patterns): When
we failed to update the reduction index do not use the pattern
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 41dea35..5d1ddbe 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,10 @@
2019-10-28 Richard Biener <rguenther@suse.de>
+ PR tree-optimization/92252
+ * gcc.dg/torture/pr92252.c: New testcase.
+
+2019-10-28 Richard Biener <rguenther@suse.de>
+
PR tree-optimization/92241
* gcc.dg/torture/pr92241.c: New testcase.
diff --git a/gcc/testsuite/gcc.dg/torture/pr92252.c b/gcc/testsuite/gcc.dg/torture/pr92252.c
new file mode 100644
index 0000000..eea60a0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr92252.c
@@ -0,0 +1,23 @@
+/* { do-do compile } */
+/* { dg-additional-options "-ftree-vectorize" } */
+
+long int ar;
+int dt;
+
+long int
+pc (unsigned long int q3, int zw)
+{
+ long int em = 0;
+
+ while (zw < 1)
+ {
+ q3 = zw * 2ul;
+ if (q3 != 0)
+ for (ar = 0; ar < 2; ++ar)
+ em = dt;
+
+ ++zw;
+ }
+
+ return em;
+}
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index e32731b..b75594c 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -563,6 +563,10 @@ again:
{
swap_ssa_operands (stmt, gimple_assign_rhs2_ptr (stmt),
gimple_assign_rhs3_ptr (stmt));
+ if (STMT_VINFO_REDUC_IDX (stmt_info) == 1)
+ STMT_VINFO_REDUC_IDX (stmt_info) = 2;
+ else if (STMT_VINFO_REDUC_IDX (stmt_info) == 2)
+ STMT_VINFO_REDUC_IDX (stmt_info) = 1;
bool honor_nans = HONOR_NANS (TREE_OPERAND (cond, 0));
code = invert_tree_comparison (TREE_CODE (cond), honor_nans);
gcc_assert (code != ERROR_MARK);