From: xuli <xu...@eswincomputing.com>
Consider the flowing situation:
BB5: local_dem(RVV Insn 1, AVL(reg zero))
RVV Insn 1: vmv.s.x, AVL (const_int 1)
RVV Insn 2: vredsum.vs, AVL(reg zero)
vmv.s.x has vl operand, the following code will get
avl (cosnt_int) from RVV Insn 1.
rtx avl = has_vl_op (insn->rtl ()) ? get_vl (insn->rtl ())
: dem.get_avl ();
If use REGNO for const_int, the compiler will crash:
during RTL pass: vsetvl
res_debug.c: In function '__dn_count_labels':
res_debug.c:1050:1: internal compiler error: RTL check: expected code 'reg',
have 'const_int' in rhs_regno, at rtl.h:1934
1050 | }
| ^
0x8fb169 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int,
char const*)
../.././gcc/gcc/rtl.cc:770
0x1399818 rhs_regno(rtx_def const*)
../.././gcc/gcc/rtl.h:1934
0x1399818 anticipatable_occurrence_p
../.././gcc/gcc/config/riscv/riscv-vsetvl.cc:348
So in this case avl should be obtained from dem.
Another issue is caused by the following code:
HOST_WIDE_INT diff = INTVAL (builder.elt (i)) - i;
during RTL pass: expand
../../.././gcc/libgfortran/generated/matmul_c4.c: In function 'matmul_c4':
../../.././gcc/libgfortran/generated/matmul_c4.c:2906:39: internal compiler
error: RTL check:
expected code 'const_int', have 'const_poly_int' in expand_const_vector,
at config/riscv/riscv-v.cc:1149
The builder.elt (i) can be either const_int or const_poly_int.
PR target/111533
gcc/ChangeLog:
* config/riscv/riscv-v.cc (expand_const_vector): Fix bug.
* config/riscv/riscv-vsetvl.cc (anticipatable_occurrence_p): Fix bug.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/rvv/base/pr111533-1.c: New test.
* gcc.target/riscv/rvv/base/pr111533-2.c: New test.
---
gcc/config/riscv/riscv-v.cc | 5 ++--
gcc/config/riscv/riscv-vsetvl.cc | 3 +-
.../gcc.target/riscv/rvv/base/pr111533-1.c | 15 ++++++++++
.../gcc.target/riscv/rvv/base/pr111533-2.c | 29 +++++++++++++++++++
4 files changed, 48 insertions(+), 4 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/base/pr111533-1.c
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/base/pr111533-2.c
diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
index 359fb2ced8b..26700cfc732 100644
--- a/gcc/config/riscv/riscv-v.cc
+++ b/gcc/config/riscv/riscv-v.cc
@@ -1149,8 +1149,9 @@ expand_const_vector (rtx target, rtx src)
for (unsigned int i = 0; i < v.npatterns (); ++i)
{
/* Calculate the diff between the target sequence and
- vid sequence. */
- HOST_WIDE_INT diff = INTVAL (builder.elt (i)) - i;
+ vid sequence. The elt (i) can be either const_int or
+ const_poly_int. */
+ poly_int64 diff = rtx_to_poly_int64 (builder.elt (i)) - i;
v.quick_push (gen_int_mode (diff, v.inner_mode ()));
}
/* Step 2: Generate result = VID + diff. */
diff --git a/gcc/config/riscv/riscv-vsetvl.cc b/gcc/config/riscv/riscv-vsetvl.cc
index 7af33e7ea6f..af8c31d873c 100644
--- a/gcc/config/riscv/riscv-vsetvl.cc
+++ b/gcc/config/riscv/riscv-vsetvl.cc
@@ -307,8 +307,7 @@ anticipatable_occurrence_p (const bb_info *bb, const
vector_insn_info dem)
if (dem.has_avl_reg ())
{
/* rs1 (avl) are not modified in the basic block prior to the VSETVL. */
- rtx avl
- = has_vl_op (insn->rtl ()) ? get_vl (insn->rtl ()) : dem.get_avl ();
+ rtx avl = dem.get_avl_or_vl_reg ();
if (dem.dirty_p ())
{
gcc_assert (!vsetvl_insn_p (insn->rtl ()));
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/pr111533-1.c
b/gcc/testsuite/gcc.target/riscv/rvv/base/pr111533-1.c
new file mode 100644
index 00000000000..aba26dfac89
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/base/pr111533-1.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O2 -ffast-math -ftree-vectorize"
} */
+
+#include <stddef.h>
+
+typedef _Complex float GFC_COMPLEX_4;
+
+void
+test (GFC_COMPLEX_4 *a, GFC_COMPLEX_4 *b, GFC_COMPLEX_4 c, ptrdiff_t i,
ptrdiff_t j)
+{
+ ptrdiff_t l;
+ for (l = 0; l <= i; ++l)
+ c += b[l] * a[j];
+ b[j] = c;
+}
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/pr111533-2.c
b/gcc/testsuite/gcc.target/riscv/rvv/base/pr111533-2.c
new file mode 100644
index 00000000000..a4d2011b74b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/base/pr111533-2.c
@@ -0,0 +1,29 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O2" } */
+
+#include <string.h>
+
+/* Return the number of DNS hierarchy levels in the name. */
+int
+test (const char *name) {
+ int i, len, count;
+
+ len = strlen(name);
+ for (i = 0, count = 0; i < len; i++) {
+ /* XXX need to check for \. or use named's nlabels(). */
+ if (name[i] == '.')
+ count++;
+ }
+
+ /* don't count initial wildcard */
+ if (name[0] == '*')
+ if (count)
+ count--;
+
+ /* don't count the null label for root. */
+ /* if terminating '.' not found, must adjust */
+ /* count to include last label */
+ if (len > 0 && name[len-1] != '.')
+ count++;
+ return (count);
+}
--
2.17.1
