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authorRichard Henderson <richard.henderson@linaro.org>2017-09-15 14:11:45 -0700
committerRichard Henderson <richard.henderson@linaro.org>2018-02-08 15:54:05 +0000
commitdb432672dc50ed86dda17ac821b7eb07411a90af (patch)
treeb00fb1db81cb0ac0d3e82f6242d6908bf657dd0f /accel/tcg
parent474b2e8f0f765515515b495e6872b5e18a660baf (diff)
tcg: Add generic vector expanders
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'accel/tcg')
-rw-r--r--accel/tcg/Makefile.objs2
-rw-r--r--accel/tcg/tcg-runtime-gvec.c325
-rw-r--r--accel/tcg/tcg-runtime.h29
3 files changed, 355 insertions, 1 deletions
diff --git a/accel/tcg/Makefile.objs b/accel/tcg/Makefile.objs
index 228cd84fa4..d381a02f34 100644
--- a/accel/tcg/Makefile.objs
+++ b/accel/tcg/Makefile.objs
@@ -1,6 +1,6 @@
obj-$(CONFIG_SOFTMMU) += tcg-all.o
obj-$(CONFIG_SOFTMMU) += cputlb.o
-obj-y += tcg-runtime.o
+obj-y += tcg-runtime.o tcg-runtime-gvec.o
obj-y += cpu-exec.o cpu-exec-common.o translate-all.o
obj-y += translator.o
diff --git a/accel/tcg/tcg-runtime-gvec.c b/accel/tcg/tcg-runtime-gvec.c
new file mode 100644
index 0000000000..e093922225
--- /dev/null
+++ b/accel/tcg/tcg-runtime-gvec.c
@@ -0,0 +1,325 @@
+/*
+ * Generic vectorized operation runtime
+ *
+ * Copyright (c) 2018 Linaro
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/host-utils.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "tcg-gvec-desc.h"
+
+
+/* Virtually all hosts support 16-byte vectors. Those that don't can emulate
+ * them via GCC's generic vector extension. This turns out to be simpler and
+ * more reliable than getting the compiler to autovectorize.
+ *
+ * In tcg-op-gvec.c, we asserted that both the size and alignment of the data
+ * are multiples of 16.
+ *
+ * When the compiler does not support all of the operations we require, the
+ * loops are written so that we can always fall back on the base types.
+ */
+#ifdef CONFIG_VECTOR16
+typedef uint8_t vec8 __attribute__((vector_size(16)));
+typedef uint16_t vec16 __attribute__((vector_size(16)));
+typedef uint32_t vec32 __attribute__((vector_size(16)));
+typedef uint64_t vec64 __attribute__((vector_size(16)));
+
+typedef int8_t svec8 __attribute__((vector_size(16)));
+typedef int16_t svec16 __attribute__((vector_size(16)));
+typedef int32_t svec32 __attribute__((vector_size(16)));
+typedef int64_t svec64 __attribute__((vector_size(16)));
+
+#define DUP16(X) { X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X }
+#define DUP8(X) { X, X, X, X, X, X, X, X }
+#define DUP4(X) { X, X, X, X }
+#define DUP2(X) { X, X }
+#else
+typedef uint8_t vec8;
+typedef uint16_t vec16;
+typedef uint32_t vec32;
+typedef uint64_t vec64;
+
+typedef int8_t svec8;
+typedef int16_t svec16;
+typedef int32_t svec32;
+typedef int64_t svec64;
+
+#define DUP16(X) X
+#define DUP8(X) X
+#define DUP4(X) X
+#define DUP2(X) X
+#endif /* CONFIG_VECTOR16 */
+
+static inline void clear_high(void *d, intptr_t oprsz, uint32_t desc)
+{
+ intptr_t maxsz = simd_maxsz(desc);
+ intptr_t i;
+
+ if (unlikely(maxsz > oprsz)) {
+ for (i = oprsz; i < maxsz; i += sizeof(uint64_t)) {
+ *(uint64_t *)(d + i) = 0;
+ }
+ }
+}
+
+void HELPER(gvec_add8)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec8)) {
+ *(vec8 *)(d + i) = *(vec8 *)(a + i) + *(vec8 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_add16)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec16)) {
+ *(vec16 *)(d + i) = *(vec16 *)(a + i) + *(vec16 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_add32)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec32)) {
+ *(vec32 *)(d + i) = *(vec32 *)(a + i) + *(vec32 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_add64)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = *(vec64 *)(a + i) + *(vec64 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_sub8)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec8)) {
+ *(vec8 *)(d + i) = *(vec8 *)(a + i) - *(vec8 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_sub16)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec16)) {
+ *(vec16 *)(d + i) = *(vec16 *)(a + i) - *(vec16 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_sub32)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec32)) {
+ *(vec32 *)(d + i) = *(vec32 *)(a + i) - *(vec32 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_sub64)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = *(vec64 *)(a + i) - *(vec64 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_neg8)(void *d, void *a, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec8)) {
+ *(vec8 *)(d + i) = -*(vec8 *)(a + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_neg16)(void *d, void *a, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec16)) {
+ *(vec16 *)(d + i) = -*(vec16 *)(a + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_neg32)(void *d, void *a, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec32)) {
+ *(vec32 *)(d + i) = -*(vec32 *)(a + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_neg64)(void *d, void *a, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = -*(vec64 *)(a + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_mov)(void *d, void *a, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+
+ memcpy(d, a, oprsz);
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_dup64)(void *d, uint32_t desc, uint64_t c)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ if (c == 0) {
+ oprsz = 0;
+ } else {
+ for (i = 0; i < oprsz; i += sizeof(uint64_t)) {
+ *(uint64_t *)(d + i) = c;
+ }
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_dup32)(void *d, uint32_t desc, uint32_t c)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ if (c == 0) {
+ oprsz = 0;
+ } else {
+ for (i = 0; i < oprsz; i += sizeof(uint32_t)) {
+ *(uint32_t *)(d + i) = c;
+ }
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_dup16)(void *d, uint32_t desc, uint32_t c)
+{
+ HELPER(gvec_dup32)(d, desc, 0x00010001 * (c & 0xffff));
+}
+
+void HELPER(gvec_dup8)(void *d, uint32_t desc, uint32_t c)
+{
+ HELPER(gvec_dup32)(d, desc, 0x01010101 * (c & 0xff));
+}
+
+void HELPER(gvec_not)(void *d, void *a, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = ~*(vec64 *)(a + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_and)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = *(vec64 *)(a + i) & *(vec64 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_or)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = *(vec64 *)(a + i) | *(vec64 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_xor)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = *(vec64 *)(a + i) ^ *(vec64 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_andc)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = *(vec64 *)(a + i) &~ *(vec64 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
+
+void HELPER(gvec_orc)(void *d, void *a, void *b, uint32_t desc)
+{
+ intptr_t oprsz = simd_oprsz(desc);
+ intptr_t i;
+
+ for (i = 0; i < oprsz; i += sizeof(vec64)) {
+ *(vec64 *)(d + i) = *(vec64 *)(a + i) |~ *(vec64 *)(b + i);
+ }
+ clear_high(d, oprsz, desc);
+}
diff --git a/accel/tcg/tcg-runtime.h b/accel/tcg/tcg-runtime.h
index 1df17d0ba9..76ee41ce58 100644
--- a/accel/tcg/tcg-runtime.h
+++ b/accel/tcg/tcg-runtime.h
@@ -134,3 +134,32 @@ GEN_ATOMIC_HELPERS(xor_fetch)
GEN_ATOMIC_HELPERS(xchg)
#undef GEN_ATOMIC_HELPERS
+
+DEF_HELPER_FLAGS_3(gvec_mov, TCG_CALL_NO_RWG, void, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_3(gvec_dup8, TCG_CALL_NO_RWG, void, ptr, i32, i32)
+DEF_HELPER_FLAGS_3(gvec_dup16, TCG_CALL_NO_RWG, void, ptr, i32, i32)
+DEF_HELPER_FLAGS_3(gvec_dup32, TCG_CALL_NO_RWG, void, ptr, i32, i32)
+DEF_HELPER_FLAGS_3(gvec_dup64, TCG_CALL_NO_RWG, void, ptr, i32, i64)
+
+DEF_HELPER_FLAGS_4(gvec_add8, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_add16, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_add32, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_add64, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_4(gvec_sub8, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_sub16, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_sub32, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_sub64, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_3(gvec_neg8, TCG_CALL_NO_RWG, void, ptr, ptr, i32)
+DEF_HELPER_FLAGS_3(gvec_neg16, TCG_CALL_NO_RWG, void, ptr, ptr, i32)
+DEF_HELPER_FLAGS_3(gvec_neg32, TCG_CALL_NO_RWG, void, ptr, ptr, i32)
+DEF_HELPER_FLAGS_3(gvec_neg64, TCG_CALL_NO_RWG, void, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_3(gvec_not, TCG_CALL_NO_RWG, void, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_and, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_or, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_xor, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_andc, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_4(gvec_orc, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)