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[PATCH, PR tree-optimization/71006] Fix vectype computation for COND_EXPR
- From: Ilya Enkovich <enkovich dot gnu at gmail dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Thu, 12 May 2016 13:19:01 +0300
- Subject: [PATCH, PR tree-optimization/71006] Fix vectype computation for COND_EXPR
- Authentication-results: sourceware.org; auth=none
Hi,
Currently we have a code in vect_determine_vectorization_factor to
compute vectype for mask producers. It wasn't meant to be used for
EXPR_COND assignments but it is used now in some cases causing wrong
resulting vectype.
Bootstrapped and regtested for x86_64-pc-linux-gnu. OK for trunk?
Thanks,
Ilya
--
gcc/
2016-05-12 Ilya Enkovich <ilya.enkovich@intel.com>
PR tree-optimization/71006
* tree-vect-loop.c (vect_determine_vectorization_factor): Don't
consider COND_EXPR as a mask producer.
gcc/testsuite/
2016-05-12 Ilya Enkovich <ilya.enkovich@intel.com>
PR tree-optimization/71006
* gcc.dg/pr71006.c: New test.
diff --git a/gcc/testsuite/gcc.dg/pr71006.c b/gcc/testsuite/gcc.dg/pr71006.c
new file mode 100644
index 0000000..2b45aa0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr71006.c
@@ -0,0 +1,16 @@
+/* PR target/71006 */
+/* { dg-do compile } */
+/* { dg-options "-O1 -ftree-vectorize" } */
+
+unsigned char uu, gu, e2;
+
+void
+fs (void)
+{
+ char *nq = (char *)&gu, *k4 = (char *)&gu;
+ while (*k4 < 1)
+ {
+ uu += (*nq != 0 || e2 != 0);
+ ++*k4;
+ }
+}
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index da98211..d673c67 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -437,7 +437,9 @@ vect_determine_vectorization_factor (loop_vec_info loop_vinfo)
/* Bool ops don't participate in vectorization factor
computation. For comparison use compared types to
compute a factor. */
- if (TREE_CODE (scalar_type) == BOOLEAN_TYPE)
+ if (TREE_CODE (scalar_type) == BOOLEAN_TYPE
+ && is_gimple_assign (stmt)
+ && gimple_assign_rhs_code (stmt) != COND_EXPR)
{
if (STMT_VINFO_RELEVANT_P (stmt_info))
mask_producers.safe_push (stmt_info);