MVE has different constraints than Neon for load/store: we should use
the Ux constraint instead of Um.
2021-03-24 Christophe Lyon <christophe.l...@linaro.org>
PR target/99727
gcc/
* config/arm/mve.md (movmisalign<mode>_mve_store): Use Ux
constraint.
(movmisalign<mode>_mve_load): Likewise.
gcc/testsuite/
* gcc.target/arm/pr99727.c: New test.
---
gcc/config/arm/mve.md | 4 ++--
gcc/testsuite/gcc.target/arm/pr99727.c | 13 +++++++++++++
2 files changed, 15 insertions(+), 2 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/arm/pr99727.c
diff --git a/gcc/config/arm/mve.md b/gcc/config/arm/mve.md
index 440fd6a..1351863 100644
--- a/gcc/config/arm/mve.md
+++ b/gcc/config/arm/mve.md
@@ -10858,7 +10858,7 @@ (define_insn "arm_vcx3q<a>_p_v16qi"
)
(define_insn "*movmisalign<mode>_mve_store"
- [(set (match_operand:MVE_VLD_ST 0 "neon_permissive_struct_operand"
"=Um")
+ [(set (match_operand:MVE_VLD_ST 0 "neon_permissive_struct_operand"
"=Ux")
(unspec:MVE_VLD_ST [(match_operand:MVE_VLD_ST 1 "s_register_operand" "
w")]
UNSPEC_MISALIGNED_ACCESS))]
"((TARGET_HAVE_MVE && VALID_MVE_SI_MODE (<MODE>mode))
@@ -10871,7 +10871,7 @@ (define_insn "*movmisalign<mode>_mve_store"
(define_insn "*movmisalign<mode>_mve_load"
[(set (match_operand:MVE_VLD_ST 0 "s_register_operand"
"=w")
- (unspec:MVE_VLD_ST [(match_operand:MVE_VLD_ST 1
"neon_permissive_struct_operand" " Um")]
+ (unspec:MVE_VLD_ST [(match_operand:MVE_VLD_ST 1
"neon_permissive_struct_operand" " Ux")]
UNSPEC_MISALIGNED_ACCESS))]
"((TARGET_HAVE_MVE && VALID_MVE_SI_MODE (<MODE>mode))
|| (TARGET_HAVE_MVE_FLOAT && VALID_MVE_SF_MODE (<MODE>mode)))
diff --git a/gcc/testsuite/gcc.target/arm/pr99727.c
b/gcc/testsuite/gcc.target/arm/pr99727.c
new file mode 100644
index 0000000..92585e2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/pr99727.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target arm_v8_1m_mve_ok } */
+/* { dg-options "-O3" } */
+/* { dg-add-options arm_v8_1m_mve } */
+
+char a[7][25][15][14];
+void b() {
+ for (int c;; ++c)
+ for (int d = 0; d < 25; ++d)
+ for (int e = 0; e < 15; ++e)
+ for (int f = 0; f < 14; ++f)
+ a[c][d][e][f] = 1;
+}
--
2.7.4
