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* [gcc/devel/autopar_devel] tree-optimization/95487 - use a truth type for scatter masks
@ 2020-08-22 21:56 Giuliano Belinassi
0 siblings, 0 replies; only message in thread
From: Giuliano Belinassi @ 2020-08-22 21:56 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:584436db8cffb154bbb8e02c51da58eb240533e1
commit 584436db8cffb154bbb8e02c51da58eb240533e1
Author: Richard Biener <rguenther@suse.de>
Date: Wed Jun 3 15:51:29 2020 +0200
tree-optimization/95487 - use a truth type for scatter masks
This makes sure to get a truth type for scatter masks even when they
are invariant.
2020-06-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/95487
* tree-vect-stmts.c (vectorizable_store): Use a truth type
for the scatter mask.
* g++.dg/vect/pr95487.cc: New testcase.
Diff:
---
gcc/testsuite/g++.dg/vect/pr95487.cc | 20 ++++++++++++++++++++
gcc/tree-vect-stmts.c | 8 ++++++--
2 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/gcc/testsuite/g++.dg/vect/pr95487.cc b/gcc/testsuite/g++.dg/vect/pr95487.cc
new file mode 100644
index 00000000000..34023d25572
--- /dev/null
+++ b/gcc/testsuite/g++.dg/vect/pr95487.cc
@@ -0,0 +1,20 @@
+// { dg-do compile }
+// { dg-additional-options "-O3" }
+// { dg-additional-options "-march=skylake-avx512" { target x86_64-*-* i?86-*-* } }
+
+int a;
+bool d;
+char e;
+extern short f[];
+extern int g[];
+short j;
+void h() {
+ for (short b = j; b < 0; b += 2) {
+ f[b] = 0;
+ if (d) {
+ for (char c = 0; c < a; c += 3)
+ e = 0;
+ g[b] = 0;
+ }
+ }
+}
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index a6c7f333fc7..5548f0d987f 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -7676,8 +7676,12 @@ vectorizable_store (vec_info *vinfo,
gs_info.offset,
stmt_info);
if (mask)
- mask_op = vec_mask = vect_get_vec_def_for_operand (vinfo, mask,
- stmt_info);
+ {
+ tree mask_vectype = truth_type_for (vectype);
+ mask_op = vec_mask
+ = vect_get_vec_def_for_operand (vinfo, mask,
+ stmt_info, mask_vectype);
+ }
}
else if (modifier != NONE && (j & 1))
{
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