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* [gcc r12-8361] Fix internal error with vectorization on SPARC
@ 2022-05-10 7:41 Eric Botcazou
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From: Eric Botcazou @ 2022-05-10 7:41 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:b931d0cfd33fec6ffc259b1be5c832144b4e7bea
commit r12-8361-gb931d0cfd33fec6ffc259b1be5c832144b4e7bea
Author: Eric Botcazou <ebotcazou@adacore.com>
Date: Tue May 10 09:33:16 2022 +0200
Fix internal error with vectorization on SPARC
This is a regression present since the 10.x series, but the underlying issue
has been there since the TARGET_VEC_PERM_CONST hook was implemented, in the
form of an ICE when expanding a constant VEC_PERM_EXPR in V4QI, while the
back-end only supports V8QI constant VEC_PERM_EXPRs.
gcc/
PR target/105292
* config/sparc/sparc.cc (sparc_vectorize_vec_perm_const): Return
true only for 8-byte vector modes.
gcc/testsuite/
* gcc.target/sparc/20220510-1.c: New test.
Diff:
---
gcc/config/sparc/sparc.cc | 4 ++--
gcc/testsuite/gcc.target/sparc/20220510-1.c | 31 +++++++++++++++++++++++++++++
2 files changed, 33 insertions(+), 2 deletions(-)
diff --git a/gcc/config/sparc/sparc.cc b/gcc/config/sparc/sparc.cc
index 467a9f171d2..aca925befe1 100644
--- a/gcc/config/sparc/sparc.cc
+++ b/gcc/config/sparc/sparc.cc
@@ -13041,9 +13041,9 @@ sparc_vectorize_vec_perm_const (machine_mode vmode, rtx target, rtx op0,
if (!TARGET_VIS2)
return false;
- /* All permutes are supported. */
+ /* All 8-byte permutes are supported. */
if (!target)
- return true;
+ return GET_MODE_SIZE (vmode) == 8;
/* Force target-independent code to convert constant permutations on other
modes down to V8QI. Rely on this to avoid the complexity of the byte
diff --git a/gcc/testsuite/gcc.target/sparc/20220510-1.c b/gcc/testsuite/gcc.target/sparc/20220510-1.c
new file mode 100644
index 00000000000..f321cab8482
--- /dev/null
+++ b/gcc/testsuite/gcc.target/sparc/20220510-1.c
@@ -0,0 +1,31 @@
+/* PR target/105292 */
+/* Reported by Koakuma <koachan+gccbugs@protonmail.com> */
+
+/* { dg-do compile } */
+/* { dg-options "-O3 -mvis2" } */
+
+extern void get_vbytes_v2 (unsigned);
+
+typedef struct {
+ unsigned ctt_info;
+ unsigned ctt_size;
+} ctf_type_t;
+
+typedef struct {
+ unsigned short cts_offset;
+ unsigned short cts_bits;
+} ctf_slice_t;
+
+void flip_types_len (ctf_type_t *t, int bsx1, int bsx2)
+{
+ const int kind = t->ctt_info;
+
+ get_vbytes_v2 (t->ctt_size);
+
+ if (kind == 4)
+ {
+ ctf_slice_t *s = (ctf_slice_t *)t;
+ s->cts_offset = __builtin_bswap16(bsx1);
+ s->cts_bits = __builtin_bswap16(bsx2);
+ }
+}
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2022-05-10 7:41 [gcc r12-8361] Fix internal error with vectorization on SPARC Eric Botcazou
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