This patch enables MVE veorq instructions for auto-vectorization. MVE
veorq insns in mve.md are modified to use xor instead of unspec
expression to support xor<mode>3. The xor<mode>3 expander is added to
vec-common.md
2020-11-12 Christophe Lyon <christophe.l...@linaro.org>
gcc/
* config/arm/iterators.md (supf): Remove VEORQ_S and VEORQ_U.
(VEORQ): Remove.
* config/arm/mve.md (mve_veorq_u<mode>): New entry for veor
instruction using expression xor.
(mve_veorq_s<mode>): New expander.
* config/arm/neon.md (xor<mode>3): Renamed into xor<mode>3_neon.
* config/arm/unspscs.md (VEORQ_S, VEORQ_U): Remove.
* config/arm/vec-common.md (xor<mode>3): New expander.
gcc/testsuite/
* gcc.target/arm/simd/mve-veor.c: Add tests for veor.
---
gcc/config/arm/iterators.md | 3 +--
gcc/config/arm/mve.md | 17 ++++++++++----
gcc/config/arm/neon.md | 2 +-
gcc/config/arm/unspecs.md | 2 --
gcc/config/arm/vec-common.md | 15 ++++++++++++
gcc/testsuite/gcc.target/arm/simd/mve-veor.c | 34 ++++++++++++++++++++++++++++
6 files changed, 63 insertions(+), 10 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/arm/simd/mve-veor.c
diff --git a/gcc/config/arm/iterators.md b/gcc/config/arm/iterators.md
index 5fcb7af..0195275 100644
--- a/gcc/config/arm/iterators.md
+++ b/gcc/config/arm/iterators.md
@@ -1237,7 +1237,7 @@ (define_int_attr supf [(VCVTQ_TO_F_S "s") (VCVTQ_TO_F_U "u")
(VREV16Q_S "s")
(VCADDQ_ROT270_U "u") (VCADDQ_ROT90_S "s")
(VCMPEQQ_S "s") (VCMPEQQ_U "u") (VCADDQ_ROT90_U "u")
(VCMPEQQ_N_S "s") (VCMPEQQ_N_U "u") (VCMPNEQ_N_S "s")
- (VCMPNEQ_N_U "u") (VEORQ_S "s") (VEORQ_U "u")
+ (VCMPNEQ_N_U "u")
(VHADDQ_N_S "s") (VHADDQ_N_U "u") (VHADDQ_S "s")
(VHADDQ_U "u") (VHSUBQ_N_S "s") (VHSUBQ_N_U "u")
(VHSUBQ_S "s") (VMAXQ_S "s") (VMAXQ_U "u") (VHSUBQ_U "u")
@@ -1507,7 +1507,6 @@ (define_int_iterator VCADDQ_ROT90 [VCADDQ_ROT90_U
VCADDQ_ROT90_S])
(define_int_iterator VCMPEQQ [VCMPEQQ_U VCMPEQQ_S])
(define_int_iterator VCMPEQQ_N [VCMPEQQ_N_S VCMPEQQ_N_U])
(define_int_iterator VCMPNEQ_N [VCMPNEQ_N_U VCMPNEQ_N_S])
-(define_int_iterator VEORQ [VEORQ_U VEORQ_S])
(define_int_iterator VHADDQ [VHADDQ_S VHADDQ_U])
(define_int_iterator VHADDQ_N [VHADDQ_N_U VHADDQ_N_S])
(define_int_iterator VHSUBQ [VHSUBQ_S VHSUBQ_U])
diff --git a/gcc/config/arm/mve.md b/gcc/config/arm/mve.md
index 0f04044..a5f5d75 100644
--- a/gcc/config/arm/mve.md
+++ b/gcc/config/arm/mve.md
@@ -1204,17 +1204,24 @@ (define_insn "mve_vcmpneq_n_<supf><mode>"
;;
;; [veorq_u, veorq_s])
;;
-(define_insn "mve_veorq_<supf><mode>"
+(define_insn "mve_veorq_u<mode>"
[
(set (match_operand:MVE_2 0 "s_register_operand" "=w")
- (unspec:MVE_2 [(match_operand:MVE_2 1 "s_register_operand" "w")
- (match_operand:MVE_2 2 "s_register_operand" "w")]
- VEORQ))
+ (xor:MVE_2 (match_operand:MVE_2 1 "s_register_operand" "w")
+ (match_operand:MVE_2 2 "s_register_operand" "w")))
]
"TARGET_HAVE_MVE"
- "veor %q0, %q1, %q2"
+ "veor\t%q0, %q1, %q2"
[(set_attr "type" "mve_move")
])
+(define_expand "mve_veorq_s<mode>"
+ [
+ (set (match_operand:MVE_2 0 "s_register_operand")
+ (xor:MVE_2 (match_operand:MVE_2 1 "s_register_operand")
+ (match_operand:MVE_2 2 "s_register_operand")))
+ ]
+ "TARGET_HAVE_MVE"
+)
;;
;; [vhaddq_n_u, vhaddq_n_s])
diff --git a/gcc/config/arm/neon.md b/gcc/config/arm/neon.md
index 669c34d..e1263b0 100644
--- a/gcc/config/arm/neon.md
+++ b/gcc/config/arm/neon.md
@@ -747,7 +747,7 @@ (define_insn "bic<mode>3_neon"
[(set_attr "type" "neon_logic<q>")]
)
-(define_insn "xor<mode>3"
+(define_insn "xor<mode>3_neon"
[(set (match_operand:VDQ 0 "s_register_operand" "=w")
(xor:VDQ (match_operand:VDQ 1 "s_register_operand" "w")
(match_operand:VDQ 2 "s_register_operand" "w")))]
diff --git a/gcc/config/arm/unspecs.md b/gcc/config/arm/unspecs.md
index f111ad8..78313ea 100644
--- a/gcc/config/arm/unspecs.md
+++ b/gcc/config/arm/unspecs.md
@@ -608,7 +608,6 @@ (define_c_enum "unspec" [
VCMPEQQ_S
VCMPEQQ_N_S
VCMPNEQ_N_S
- VEORQ_S
VHADDQ_S
VHADDQ_N_S
VHSUBQ_S
@@ -653,7 +652,6 @@ (define_c_enum "unspec" [
VCMPEQQ_U
VCMPEQQ_N_U
VCMPNEQ_N_U
- VEORQ_U
VHADDQ_U
VHADDQ_N_U
VHSUBQ_U
diff --git a/gcc/config/arm/vec-common.md b/gcc/config/arm/vec-common.md
index 413fb07..687134a 100644
--- a/gcc/config/arm/vec-common.md
+++ b/gcc/config/arm/vec-common.md
@@ -202,3 +202,18 @@ (define_expand "ior<mode>3"
(match_operand:VNINOTM1 2 "neon_logic_op2" "")))]
"TARGET_NEON"
)
+
+(define_expand "xor<mode>3"
+ [(set (match_operand:VNIM1 0 "s_register_operand" "")
+ (xor:VNIM1 (match_operand:VNIM1 1 "s_register_operand" "")
+ (match_operand:VNIM1 2 "s_register_operand" "")))]
+ "TARGET_NEON
+ || (TARGET_HAVE_MVE && VALID_MVE_SI_MODE (<MODE>mode))"
+)
+
+(define_expand "xor<mode>3"
+ [(set (match_operand:VNINOTM1 0 "s_register_operand" "")
+ (xor:VNINOTM1 (match_operand:VNINOTM1 1 "s_register_operand" "")
+ (match_operand:VNINOTM1 2 "s_register_operand" "")))]
+ "TARGET_NEON"
+)
diff --git a/gcc/testsuite/gcc.target/arm/simd/mve-veor.c
b/gcc/testsuite/gcc.target/arm/simd/mve-veor.c
new file mode 100644
index 0000000..5c534cc
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/simd/mve-veor.c
@@ -0,0 +1,34 @@
+/* { dg-do assemble } */
+/* { dg-require-effective-target arm_v8_1m_mve_ok } */
+/* { dg-add-options arm_v8_1m_mve } */
+/* { dg-additional-options "-O3" } */
+
+#include <stdint.h>
+
+#define FUNC(SIGN, TYPE, BITS, NB, OP, NAME) \
+ void test_ ## NAME ##_ ## SIGN ## BITS ## x ## NB (TYPE##BITS##_t *
__restrict__ dest, TYPE##BITS##_t *a, TYPE##BITS##_t *b) { \
+ int i; \
+ for (i=0; i<NB; i++) { \
+ dest[i] = a[i] OP b[i]; \
+ } \
+}
+
+/* 64-bit vectors. */
+FUNC(s, int, 32, 2, ^, veor)
+FUNC(u, uint, 32, 2, ^, veor)
+FUNC(s, int, 16, 4, ^, veor)
+FUNC(u, uint, 16, 4, ^, veor)
+FUNC(s, int, 8, 8, ^, veor)
+FUNC(u, uint, 8, 8, ^, veor)
+
+/* 128-bit vectors. */
+FUNC(s, int, 32, 4, ^, veor)
+FUNC(u, uint, 32, 4, ^, veor)
+FUNC(s, int, 16, 8, ^, veor)
+FUNC(u, uint, 16, 8, ^, veor)
+FUNC(s, int, 8, 16, ^, veor)
+FUNC(u, uint, 8, 16, ^, veor)
+
+/* MVE has only 128-bit vectors, so we can vectorize only half of the
+ functions above. */
+/* { dg-final { scan-assembler-times {veor\tq[0-9]+, q[0-9]+, q[0-9]+} 6 } } */
