From 25a51e98fdd504826a40775a5e5b9ffb336b5aa1 Mon Sep 17 00:00:00 2001 From: Pan Li Date: Wed, 29 Nov 2023 14:31:30 +0800 Subject: RISC-V: Bugfix for ICE in block move when zve32f 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 target/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/pr112743-1.c: New test. Signed-off-by: Pan Li --- gcc/config/riscv/riscv-string.cc | 1 + gcc/testsuite/gcc.target/riscv/rvv/base/pr112743-1.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/base/pr112743-1.c (limited to 'gcc') diff --git a/gcc/config/riscv/riscv-string.cc b/gcc/config/riscv/riscv-string.cc index 3b5e05e..80e3b59 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/pr112743-1.c b/gcc/testsuite/gcc.target/riscv/rvv/base/pr112743-1.c new file mode 100644 index 0000000..2e62e60 --- /dev/null +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/pr112743-1.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; +} -- cgit v1.1