From: Pan Li <pan2...@intel.com>
The exact_div requires the exactly multiple of the divider.
Unfortunately, the condition will be broken when zve32f in
some cases. For example,
potential_ew is 8
BYTES_PER_RISCV_VECTOR * lmul1 is [4, 4]
This patch would like to ensure the precondition of exact_div
when get_vec_mode.
PR 112743
gcc/ChangeLog:
* config/riscv/riscv-string.cc (expand_block_move): Add
precondition check for exact_div.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/rvv/base/pr112743-0.c: New test.
Signed-off-by: Pan Li <pan2...@intel.com>
---
gcc/config/riscv/riscv-string.cc | 1 +
.../gcc.target/riscv/rvv/base/pr112743-0.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/base/pr112743-0.c
diff --git a/gcc/config/riscv/riscv-string.cc b/gcc/config/riscv/riscv-string.cc
index 3b5e05e2c44..80e3b5981af 100644
--- a/gcc/config/riscv/riscv-string.cc
+++ b/gcc/config/riscv/riscv-string.cc
@@ -866,6 +866,7 @@ expand_block_move (rtx dst_in, rtx src_in, rtx length_in)
if (TARGET_MIN_VLEN * lmul <= nunits * BITS_PER_UNIT
/* Avoid loosing the option of using vsetivli . */
&& (nunits <= 31 * lmul || nunits > 31 * 8)
+ && multiple_p (BYTES_PER_RISCV_VECTOR * lmul, potential_ew)
&& (riscv_vector::get_vector_mode
(elem_mode, exact_div (BYTES_PER_RISCV_VECTOR * lmul,
potential_ew)).exists (&vmode)))
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/pr112743-0.c
b/gcc/testsuite/gcc.target/riscv/rvv/base/pr112743-0.c
new file mode 100644
index 00000000000..2e62e60d89b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/base/pr112743-0.c
@@ -0,0 +1,16 @@
+/* Test that we do not have ice when compile */
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc_zve32f_zvfh_zfh -mabi=lp64 -O2" } */
+
+typedef struct test_a {
+ void *x;
+ char a[10];
+ short b[2];
+ int c[1];
+} test_type_t;
+
+void
+test_copy_memory (test_type_t *out, test_type_t *in)
+{
+ *out = *in;
+}
--
2.34.1
