[wasm]implement simd lowering for F32x4 and I32x4 binops

test/cctest/wasm/test-wasm-simd-common.h

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/assembler-inl.h"
+#include "src/wasm/wasm-macro-gen.h"
+#include "test/cctest/cctest.h"
+#include "test/cctest/compiler/value-helper.h"
+#include "test/cctest/wasm/wasm-run-utils.h"
+
+typedef float (*FloatUnOp)(float);
+typedef float (*FloatBinOp)(float, float);
+typedef int32_t (*FloatCompareOp)(float, float);
+typedef int32_t (*Int32UnOp)(int32_t);
+typedef int32_t (*Int32BinOp)(int32_t, int32_t);
+typedef int32_t (*Int32ShiftOp)(int32_t, int);
+typedef int16_t (*Int16UnOp)(int16_t);
+typedef int16_t (*Int16BinOp)(int16_t, int16_t);
+typedef int16_t (*Int16ShiftOp)(int16_t, int);
+typedef int8_t (*Int8UnOp)(int8_t);
+typedef int8_t (*Int8BinOp)(int8_t, int8_t);
+typedef int8_t (*Int8ShiftOp)(int8_t, int);
+
+// Generic expected value functions.
+template <typename T>
+T Negate(T a) {
+  return -a;
+}
+
+template <typename T>
+T Add(T a, T b) {
+  return a + b;
+}
+
+template <typename T>
+T Sub(T a, T b) {
+  return a - b;
+}
+
+template <typename T>
+T Mul(T a, T b) {
+  return a * b;
+}
+
+template <typename T>
+T Div(T a, T b) {
+  return a / b;
+}
+
+template <typename T>
+T Minimum(T a, T b) {
+  return a <= b ? a : b;
+}
+
+template <typename T>
+T Maximum(T a, T b) {
+  return a >= b ? a : b;
+}
+
+template <typename T>
+T UnsignedMinimum(T a, T b) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return static_cast<UnsignedT>(a) <= static_cast<UnsignedT>(b) ? a : b;
+}
+
+template <typename T>
+T UnsignedMaximum(T a, T b) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return static_cast<UnsignedT>(a) >= static_cast<UnsignedT>(b) ? a : b;
+}
+
+template <typename T>
+T Equal(T a, T b) {
+  return a == b ? 1 : 0;
+}
+
+template <typename T>
+T NotEqual(T a, T b) {
+  return a != b ? 1 : 0;
+}
+
+template <typename T>
+T Greater(T a, T b) {
+  return a > b ? 1 : 0;
+}
+
+template <typename T>
+T GreaterEqual(T a, T b) {
+  return a >= b ? 1 : 0;
+}
+
+template <typename T>
+T Less(T a, T b) {
+  return a < b ? 1 : 0;
+}
+
+template <typename T>
+T LessEqual(T a, T b) {
+  return a <= b ? 1 : 0;
+}
+
+template <typename T>
+T UnsignedGreater(T a, T b) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return static_cast<UnsignedT>(a) > static_cast<UnsignedT>(b) ? 1 : 0;
+}
+
+template <typename T>
+T UnsignedGreaterEqual(T a, T b) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return static_cast<UnsignedT>(a) >= static_cast<UnsignedT>(b) ? 1 : 0;
+}
+
+template <typename T>
+T UnsignedLess(T a, T b) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return static_cast<UnsignedT>(a) < static_cast<UnsignedT>(b) ? 1 : 0;
+}
+
+template <typename T>
+T UnsignedLessEqual(T a, T b) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return static_cast<UnsignedT>(a) <= static_cast<UnsignedT>(b) ? 1 : 0;
+}
+
+template <typename T>
+T LogicalShiftLeft(T a, int shift) {
+  return a << shift;
+}
+
+template <typename T>
+T LogicalShiftRight(T a, int shift) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return static_cast<UnsignedT>(a) >> shift;
+}
+
+template <typename T>
+int64_t Widen(T value) {
+  static_assert(sizeof(int64_t) > sizeof(T), "T must be int32_t or smaller");
+  return static_cast<int64_t>(value);
+}
+
+template <typename T>
+int64_t UnsignedWiden(T value) {
+  static_assert(sizeof(int64_t) > sizeof(T), "T must be int32_t or smaller");
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return static_cast<int64_t>(static_cast<UnsignedT>(value));
+}
+
+template <typename T>
+T Clamp(int64_t value) {
+  static_assert(sizeof(int64_t) > sizeof(T), "T must be int32_t or smaller");
+  int64_t min = static_cast<int64_t>(std::numeric_limits<T>::min());
+  int64_t max = static_cast<int64_t>(std::numeric_limits<T>::max());
+  int64_t clamped = std::max(min, std::min(max, value));
+  return static_cast<T>(clamped);
+}
+
+template <typename T>
+T AddSaturate(T a, T b) {
+  return Clamp<T>(Widen(a) + Widen(b));
+}
+
+template <typename T>
+T SubSaturate(T a, T b) {
+  return Clamp<T>(Widen(a) - Widen(b));
+}
+
+template <typename T>
+T UnsignedAddSaturate(T a, T b) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return Clamp<UnsignedT>(UnsignedWiden(a) + UnsignedWiden(b));
+}
+
+template <typename T>
+T UnsignedSubSaturate(T a, T b) {
+  using UnsignedT = typename std::make_unsigned<T>::type;
+  return Clamp<UnsignedT>(UnsignedWiden(a) - UnsignedWiden(b));
+}
+
+template <typename T>
+T And(T a, T b) {
+  return a & b;
+}
+
+template <typename T>
+T Or(T a, T b) {
+  return a | b;
+}
+
+template <typename T>
+T Xor(T a, T b) {
+  return a ^ b;
+}
+
+template <typename T>
+T Not(T a) {
+  return ~a;
+}
+
+#define WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lane_value, lane_index) \
+  WASM_IF(WASM_##LANE_TYPE##_NE(WASM_GET_LOCAL(lane_value),                  \
+                                WASM_SIMD_##TYPE##_EXTRACT_LANE(             \
+                                    lane_index, WASM_GET_LOCAL(value))),     \
+          WASM_RETURN1(WASM_ZERO))
+
+#define WASM_SIMD_CHECK4(TYPE, value, LANE_TYPE, lv0, lv1, lv2, lv3) \
+  WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv0, 0)               \
+  , WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv1, 1),            \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv2, 2),          \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv3, 3)
+
+#define WASM_SIMD_CHECK_SPLAT4(TYPE, value, LANE_TYPE, lv) \
+  WASM_SIMD_CHECK4(TYPE, value, LANE_TYPE, lv, lv, lv, lv)
+
+#define WASM_SIMD_CHECK8(TYPE, value, LANE_TYPE, lv0, lv1, lv2, lv3, lv4, lv5, \
+                         lv6, lv7)                                             \
+  WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv0, 0)                         \
+  , WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv1, 1),                      \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv2, 2),                    \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv3, 3),                    \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv4, 4),                    \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv5, 5),                    \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv6, 6),                    \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv7, 7)
+
+#define WASM_SIMD_CHECK_SPLAT8(TYPE, value, LANE_TYPE, lv) \
+  WASM_SIMD_CHECK8(TYPE, value, LANE_TYPE, lv, lv, lv, lv, lv, lv, lv, lv)
+
+#define WASM_SIMD_CHECK16(TYPE, value, LANE_TYPE, lv0, lv1, lv2, lv3, lv4, \
+                          lv5, lv6, lv7, lv8, lv9, lv10, lv11, lv12, lv13, \
+                          lv14, lv15)                                      \
+  WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv0, 0)                     \
+  , WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv1, 1),                  \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv2, 2),                \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv3, 3),                \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv4, 4),                \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv5, 5),                \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv6, 6),                \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv7, 7),                \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv8, 8),                \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv9, 9),                \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv10, 10),              \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv11, 11),              \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv12, 12),              \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv13, 13),              \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv14, 14),              \
+      WASM_SIMD_CHECK_LANE(TYPE, value, LANE_TYPE, lv15, 15)
+
+#define WASM_SIMD_CHECK_SPLAT16(TYPE, value, LANE_TYPE, lv)                 \
+  WASM_SIMD_CHECK16(TYPE, value, LANE_TYPE, lv, lv, lv, lv, lv, lv, lv, lv, \
+                    lv, lv, lv, lv, lv, lv, lv, lv)
+
+#define WASM_SIMD_CHECK_F32_LANE(TYPE, value, lane_value, lane_index)       \
+  WASM_IF(                                                                  \
+      WASM_I32_NE(WASM_I32_REINTERPRET_F32(WASM_GET_LOCAL(lane_value)),     \
+                  WASM_I32_REINTERPRET_F32(WASM_SIMD_##TYPE##_EXTRACT_LANE( \
+                      lane_index, WASM_GET_LOCAL(value)))),                 \
+      WASM_RETURN1(WASM_ZERO))
+
+#define WASM_SIMD_CHECK4_F32(TYPE, value, lv0, lv1, lv2, lv3) \
+  WASM_SIMD_CHECK_F32_LANE(TYPE, value, lv0, 0)               \
+  , WASM_SIMD_CHECK_F32_LANE(TYPE, value, lv1, 1),            \
+      WASM_SIMD_CHECK_F32_LANE(TYPE, value, lv2, 2),          \
+      WASM_SIMD_CHECK_F32_LANE(TYPE, value, lv3, 3)
+
+#define WASM_SIMD_CHECK_SPLAT4_F32(TYPE, value, lv) \
+  WASM_SIMD_CHECK4_F32(TYPE, value, lv, lv, lv, lv)
+
+#define TO_BYTE(val) static_cast<byte>(val)
+#define WASM_SIMD_OP(op) kSimdPrefix, TO_BYTE(op)
+#define WASM_SIMD_SPLAT(Type, x) x, WASM_SIMD_OP(kExpr##Type##Splat)
+#define WASM_SIMD_UNOP(op, x) x, WASM_SIMD_OP(op)
+#define WASM_SIMD_BINOP(op, x, y) x, y, WASM_SIMD_OP(op)
+#define WASM_SIMD_SHIFT_OP(op, shift, x) x, WASM_SIMD_OP(op), TO_BYTE(shift)
+#define WASM_SIMD_SELECT(format, x, y, z) \
+  x, y, z, WASM_SIMD_OP(kExprS##format##Select)
+// Since boolean vectors can't be checked directly, materialize them into
+// integer vectors using a Select operation.
+#define WASM_SIMD_MATERIALIZE_BOOLS(format, x) \
+  x, WASM_SIMD_I##format##_SPLAT(WASM_ONE),    \
+      WASM_SIMD_I##format##_SPLAT(WASM_ZERO),  \
+      WASM_SIMD_OP(kExprS##format##Select)
+
+#define WASM_SIMD_I16x8_SPLAT(x) x, WASM_SIMD_OP(kExprI16x8Splat)
+#define WASM_SIMD_I16x8_EXTRACT_LANE(lane, x) \
+  x, WASM_SIMD_OP(kExprI16x8ExtractLane), TO_BYTE(lane)
+#define WASM_SIMD_I16x8_REPLACE_LANE(lane, x, y) \
+  x, y, WASM_SIMD_OP(kExprI16x8ReplaceLane), TO_BYTE(lane)
+#define WASM_SIMD_I8x16_SPLAT(x) x, WASM_SIMD_OP(kExprI8x16Splat)
+#define WASM_SIMD_I8x16_EXTRACT_LANE(lane, x) \
+  x, WASM_SIMD_OP(kExprI8x16ExtractLane), TO_BYTE(lane)
+#define WASM_SIMD_I8x16_REPLACE_LANE(lane, x, y) \
+  x, y, WASM_SIMD_OP(kExprI8x16ReplaceLane), TO_BYTE(lane)
+
+#define WASM_SIMD_F32x4_FROM_I32x4(x) x, WASM_SIMD_OP(kExprF32x4SConvertI32x4)
+#define WASM_SIMD_F32x4_FROM_U32x4(x) x, WASM_SIMD_OP(kExprF32x4UConvertI32x4)
+#define WASM_SIMD_I32x4_FROM_F32x4(x) x, WASM_SIMD_OP(kExprI32x4SConvertF32x4)
+#define WASM_SIMD_U32x4_FROM_F32x4(x) x, WASM_SIMD_OP(kExprI32x4UConvertF32x4)
+
+class TestWasmSimdCommon {

[gdeepti, 2017/02/24 13:31:23]

Maybe use a namespace here instead of a class with only static methods as per
the C++ styleguide?

[aseemgarg, 2017/02/24 14:19:42]

Done.

+ public:
+  static void RunF32x4SplatTest();
+  static void RunF32x4ReplaceLaneTest();
+  static void RunF32x4BinOpTest(WasmOpcode simd_op, FloatBinOp expected_op,
+                                bool skip_zero_inputs = false);
+  static void RunI32x4SplatTest();
+  static void RunI32x4ReplaceLaneTest();
+  static void RunI32x4BinOpTest(WasmOpcode simd_op, Int32BinOp expected_op);
+};