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* [gcc r12-8899] Always use TYPE_MODE instead of DECL_MODE for vector field
@ 2022-11-08 21:22 H.J. Lu
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From: H.J. Lu @ 2022-11-08 21:22 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:0138ebcd482c71f55d74eb9fa533fbb54a4391d6
commit r12-8899-g0138ebcd482c71f55d74eb9fa533fbb54a4391d6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Oct 19 12:53:35 2022 -0700
Always use TYPE_MODE instead of DECL_MODE for vector field
e034c5c8957 re PR target/78643 (ICE in convert_move, at expr.c:230)
fixed the case where DECL_MODE of a vector field is BLKmode and its
TYPE_MODE is a vector mode because of target attribute. Remove the
BLKmode check for the case where DECL_MODE of a vector field is a vector
mode and its TYPE_MODE isn't a vector mode because of target attribute.
gcc/
PR target/107304
* expr.cc (get_inner_reference): Always use TYPE_MODE for vector
field with vector raw mode.
gcc/testsuite/
PR target/107304
* gcc.target/i386/pr107304.c: New test.
(cherry picked from commit 1c64aba8cdf6509533f554ad86640f274cdbe37f)
Diff:
---
gcc/expr.cc | 3 +--
gcc/testsuite/gcc.target/i386/pr107304.c | 39 ++++++++++++++++++++++++++++++++
2 files changed, 40 insertions(+), 2 deletions(-)
diff --git a/gcc/expr.cc b/gcc/expr.cc
index 2103931c740..880ed89cb34 100644
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -7640,8 +7640,7 @@ get_inner_reference (tree exp, poly_int64_pod *pbitsize,
/* For vector fields re-check the target flags, as DECL_MODE
could have been set with different target flags than
the current function has. */
- if (mode == BLKmode
- && VECTOR_TYPE_P (TREE_TYPE (field))
+ if (VECTOR_TYPE_P (TREE_TYPE (field))
&& VECTOR_MODE_P (TYPE_MODE_RAW (TREE_TYPE (field))))
mode = TYPE_MODE (TREE_TYPE (field));
}
diff --git a/gcc/testsuite/gcc.target/i386/pr107304.c b/gcc/testsuite/gcc.target/i386/pr107304.c
new file mode 100644
index 00000000000..24d68795e7f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr107304.c
@@ -0,0 +1,39 @@
+/* { dg-do compile } */
+/* { dg-options "-O0 -march=tigerlake" } */
+
+#include <stdint.h>
+
+typedef union {
+ uint8_t v __attribute__((aligned(256))) __attribute__ ((vector_size(64 * sizeof(uint8_t))));
+ uint8_t i[64] __attribute__((aligned(256)));
+} stress_vec_u8_64_t;
+
+typedef struct {
+ struct {
+ stress_vec_u8_64_t s;
+ stress_vec_u8_64_t o;
+ stress_vec_u8_64_t mask1;
+ stress_vec_u8_64_t mask2;
+ } u8_64;
+} stress_vec_data_t;
+
+__attribute__((target_clones("arch=alderlake", "default")))
+void
+stress_vecshuf_u8_64(stress_vec_data_t *data)
+{
+ stress_vec_u8_64_t *__restrict s;
+ stress_vec_u8_64_t *__restrict mask1;
+ stress_vec_u8_64_t *__restrict mask2;
+ register int i;
+
+ s = &data->u8_64.s;
+ mask1 = &data->u8_64.mask1;
+ mask2 = &data->u8_64.mask2;
+
+ for (i = 0; i < 256; i++) { /* was i < 65536 */
+ stress_vec_u8_64_t tmp;
+
+ tmp.v = __builtin_shuffle(s->v, mask1->v);
+ s->v = __builtin_shuffle(tmp.v, mask2->v);
+ }
+}
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