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* [gcc r14-2086] Use cvt_op to save intermediate type operand instead of "subtle" vec_dest.
@ 2023-06-26 7:49 hongtao Liu
0 siblings, 0 replies; only message in thread
From: hongtao Liu @ 2023-06-26 7:49 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:1bfe7e5352d1f4ac525317454aca45aa80a517ba
commit r14-2086-g1bfe7e5352d1f4ac525317454aca45aa80a517ba
Author: liuhongt <hongtao.liu@intel.com>
Date: Sun Jun 25 11:12:29 2023 +0800
Use cvt_op to save intermediate type operand instead of "subtle" vec_dest.
When there're multiple operands in vec_oprnds0, vec_dest will be
overwrited to vectype_out, but in multi_step_cvt case, cvt_type is
expected. It caused an ICE when verify_gimple_in_cfg.
gcc/ChangeLog:
PR tree-optimization/110371
PR tree-optimization/110018
* tree-vect-stmts.cc (vectorizable_conversion): Use cvt_op to
save intermediate type operand instead of "subtle" vec_dest
for case NONE.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/pr110371.c: New test.
Diff:
---
gcc/testsuite/gcc.target/aarch64/pr110371.c | 20 ++++++++++++++++++++
gcc/tree-vect-stmts.cc | 14 ++++++++++----
2 files changed, 30 insertions(+), 4 deletions(-)
diff --git a/gcc/testsuite/gcc.target/aarch64/pr110371.c b/gcc/testsuite/gcc.target/aarch64/pr110371.c
new file mode 100644
index 00000000000..444e514e04f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/pr110371.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O3" } */
+
+typedef struct dest
+{
+ double m[3][3];
+} dest;
+
+typedef struct src
+{
+ int m[3][3];
+} src;
+
+void
+foo (dest *a, src* s)
+{
+ for (int i = 0; i != 3; i++)
+ for (int j = 0; j != 3; j++)
+ a->m[i][j] = s->m[i][j];
+}
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 7d24bbee152..bf61461939b 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -5044,7 +5044,7 @@ vectorizable_conversion (vec_info *vinfo,
gimple **vec_stmt, slp_tree slp_node,
stmt_vector_for_cost *cost_vec)
{
- tree vec_dest;
+ tree vec_dest, cvt_op = NULL_TREE;
tree scalar_dest;
tree op0, op1 = NULL_TREE;
loop_vec_info loop_vinfo = dyn_cast <loop_vec_info> (vinfo);
@@ -5569,6 +5569,13 @@ vectorizable_conversion (vec_info *vinfo,
case NONE:
vect_get_vec_defs (vinfo, stmt_info, slp_node, ncopies,
op0, &vec_oprnds0);
+ /* vec_dest is intermediate type operand when multi_step_cvt. */
+ if (multi_step_cvt)
+ {
+ cvt_op = vec_dest;
+ vec_dest = vec_dsts[0];
+ }
+
FOR_EACH_VEC_ELT (vec_oprnds0, i, vop0)
{
/* Arguments are ready, create the new vector stmt. */
@@ -5576,12 +5583,11 @@ vectorizable_conversion (vec_info *vinfo,
if (multi_step_cvt)
{
gcc_assert (multi_step_cvt == 1);
- new_stmt = vect_gimple_build (vec_dest, codecvt1, vop0);
- new_temp = make_ssa_name (vec_dest, new_stmt);
+ new_stmt = vect_gimple_build (cvt_op, codecvt1, vop0);
+ new_temp = make_ssa_name (cvt_op, new_stmt);
gimple_assign_set_lhs (new_stmt, new_temp);
vect_finish_stmt_generation (vinfo, stmt_info, new_stmt, gsi);
vop0 = new_temp;
- vec_dest = vec_dsts[0];
}
new_stmt = vect_gimple_build (vec_dest, code1, vop0);
new_temp = make_ssa_name (vec_dest, new_stmt);
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