[wasm] Implement simd lowering for I8x16

test/cctest/wasm/test-run-wasm-simd.cc

 // Copyright 2016 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 "test/cctest/cctest.h"
 #include "test/cctest/compiler/value-helper.h"
 #include "test/cctest/wasm/wasm-run-utils.h"
 #include "test/common/wasm/wasm-macro-gen.h"
 
@@ skipping 723 matching lines @@
         WASM_SET_LOCAL(simd,
                        WASM_SIMD_I16x8_REPLACE_LANE(7, WASM_GET_LOCAL(simd),
                                                     WASM_GET_LOCAL(new_val))),
         WASM_SIMD_CHECK_SPLAT8(I16x8, simd, I32, new_val), WASM_ONE);
 
   CHECK_EQ(1, r.Call(1, 2));
 }
 #endif  // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64 || SIMD_LOWERING_TARGET ||
         // V8_TARGET_ARCH_MIPS || V8_TARGET_ARCH_MIPS64
 
-#if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64
+#if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64 || SIMD_LOWERING_TARGET
 WASM_EXEC_COMPILED_TEST(I8x16Splat) {
   FLAG_wasm_simd_prototype = true;
 
   WasmRunner<int32_t, int32_t> r(kExecuteCompiled);
   byte lane_val = 0;
   byte simd = r.AllocateLocal(kWasmS128);
   BUILD(r,
         WASM_SET_LOCAL(simd, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(lane_val))),
         WASM_SIMD_CHECK_SPLAT8(I8x16, simd, I32, lane_val), WASM_ONE);
 
@@ skipping 97 matching lines @@
         WASM_SIMD_CHECK16(I8x16, simd, I32, new_val, new_val, new_val, new_val,
                           new_val, new_val, new_val, new_val, new_val, new_val,
                           new_val, new_val, new_val, new_val, new_val, old_val),
         WASM_SET_LOCAL(simd,
                        WASM_SIMD_I8x16_REPLACE_LANE(15, WASM_GET_LOCAL(simd),
                                                     WASM_GET_LOCAL(new_val))),
         WASM_SIMD_CHECK_SPLAT16(I8x16, simd, I32, new_val), WASM_ONE);
 
   CHECK_EQ(1, r.Call(1, 2));
 }
-#endif  // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64
+#endif  // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64 || SIMD_LOWERING_TARGET
 
 #if V8_TARGET_ARCH_ARM || SIMD_LOWERING_TARGET || V8_TARGET_ARCH_MIPS || \
     V8_TARGET_ARCH_MIPS64
 // Determines if conversion from float to int will be valid.
 bool CanRoundToZeroAndConvert(double val, bool unsigned_integer) {
   const double max_uint = static_cast<double>(0xffffffffu);
   const double max_int = static_cast<double>(kMaxInt);
   const double min_int = static_cast<double>(kMinInt);
 
   // Check for NaN.
@@ skipping 482 matching lines @@
 WASM_EXEC_COMPILED_TEST(I16x8ShrS) {
   RunI16x8ShiftOpTest(kExprI16x8ShrS, ArithmeticShiftRight, 1);
 }
 
 WASM_EXEC_COMPILED_TEST(I16x8ShrU) {
   RunI16x8ShiftOpTest(kExprI16x8ShrU, LogicalShiftRight, 1);
 }
 #endif  // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64 || SIMD_LOWERING_TARGET ||
         // V8_TARGET_ARCH_MIPS || V8_TARGET_ARCH_MIPS64
 
-#if V8_TARGET_ARCH_ARM
+#if V8_TARGET_ARCH_ARM || SIMD_LOWERING_TARGET
 void RunI8x16UnOpTest(WasmOpcode simd_op, Int8UnOp expected_op) {
   FLAG_wasm_simd_prototype = true;
   WasmRunner<int32_t, int32_t, int32_t> r(kExecuteCompiled);
   byte a = 0;
   byte expected = 1;
   byte simd = r.AllocateLocal(kWasmS128);
   BUILD(r, WASM_SET_LOCAL(simd, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(a))),
         WASM_SET_LOCAL(simd, WASM_SIMD_UNOP(simd_op, WASM_GET_LOCAL(simd))),
         WASM_SIMD_CHECK_SPLAT16(I8x16, simd, I32, expected), WASM_ONE);
 
   FOR_INT8_INPUTS(i) { CHECK_EQ(1, r.Call(*i, expected_op(*i))); }
 }
 
 WASM_EXEC_COMPILED_TEST(I8x16Neg) { RunI8x16UnOpTest(kExprI8x16Neg, Negate); }
+#endif  // V8_TARGET_ARCH_ARM || SIMD_LOWERING_TARGET
 
+#if V8_TARGET_ARCH_ARM
 // Tests both signed and unsigned conversion from I16x8 (packing).
 WASM_EXEC_COMPILED_TEST(I8x16ConvertI16x8) {
   FLAG_wasm_simd_prototype = true;
   WasmRunner<int32_t, int32_t, int32_t, int32_t> r(kExecuteCompiled);
   byte a = 0;
   byte packed_signed = 1;
   byte packed_unsigned = 2;
   byte simd0 = r.AllocateLocal(kWasmS128);
   byte simd1 = r.AllocateLocal(kWasmS128);
   byte simd2 = r.AllocateLocal(kWasmS128);
@@ skipping 10 matching lines @@
   FOR_INT16_INPUTS(i) {
     int32_t packed_signed = Narrow<int8_t>(*i);
     int32_t packed_unsigned = UnsignedNarrow<int8_t>(*i);
     // Sign-extend here, since ExtractLane sign extends.
     if (packed_unsigned & 0x80) packed_unsigned |= 0xffffff00;
     CHECK_EQ(1, r.Call(*i, packed_signed, packed_unsigned));
   }
 }
 #endif  // V8_TARGET_ARCH_ARM
 
-#if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64
+#if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64 || SIMD_LOWERING_TARGET
 void RunI8x16BinOpTest(WasmOpcode simd_op, Int8BinOp expected_op) {
   FLAG_wasm_simd_prototype = true;
   WasmRunner<int32_t, int32_t, int32_t, int32_t> r(kExecuteCompiled);
   byte a = 0;
   byte b = 1;
   byte expected = 2;
   byte simd0 = r.AllocateLocal(kWasmS128);
   byte simd1 = r.AllocateLocal(kWasmS128);
   BUILD(r, WASM_SET_LOCAL(simd0, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(a))),
         WASM_SET_LOCAL(simd1, WASM_SIMD_I8x16_SPLAT(WASM_GET_LOCAL(b))),
@@ skipping 61 matching lines @@
   FOR_INT8_INPUTS(i) {
     FOR_INT8_INPUTS(j) { CHECK_EQ(1, r.Call(*i, *j, expected_op(*i, *j))); }
   }
 }
 
 WASM_EXEC_COMPILED_TEST(I8x16Eq) { RunI8x16CompareOpTest(kExprI8x16Eq, Equal); }
 
 WASM_EXEC_COMPILED_TEST(I8x16Ne) {
   RunI8x16CompareOpTest(kExprI8x16Ne, NotEqual);
 }
-#endif  // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64
+#endif  // V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64 || SIMD_LOWERING_TARGET
 
-#if V8_TARGET_ARCH_ARM
+#if V8_TARGET_ARCH_ARM || SIMD_LOWERING_TARGET
 WASM_EXEC_COMPILED_TEST(I8x16Mul) { RunI8x16BinOpTest(kExprI8x16Mul, Mul); }
 
 WASM_EXEC_COMPILED_TEST(I8x16GtS) {
   RunI8x16CompareOpTest(kExprI8x16GtS, Greater);
 }
 
 WASM_EXEC_COMPILED_TEST(I8x16GeS) {
   RunI8x16CompareOpTest(kExprI8x16GeS, GreaterEqual);
 }
 
@@ skipping 40 matching lines @@
   RunI8x16ShiftOpTest(kExprI8x16Shl, LogicalShiftLeft, 1);
 }
 
 WASM_EXEC_COMPILED_TEST(I8x16ShrS) {
   RunI8x16ShiftOpTest(kExprI8x16ShrS, ArithmeticShiftRight, 1);
 }
 
 WASM_EXEC_COMPILED_TEST(I8x16ShrU) {
   RunI8x16ShiftOpTest(kExprI8x16ShrU, LogicalShiftRight, 1);
 }
-#endif  // V8_TARGET_ARCH_ARM
+#endif  // V8_TARGET_ARCH_ARM || SIMD_LOWERING_TARGET
 
 #if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_MIPS || \
     V8_TARGET_ARCH_MIPS64
 // Test Select by making a mask where the first two lanes are true and the rest
 // false, and comparing for non-equality with zero to materialize a bool vector.
 #define WASM_SIMD_SELECT_TEST(format)                                         \
   WASM_EXEC_COMPILED_TEST(S##format##Select) {                                \
     FLAG_wasm_simd_prototype = true;                                          \
     WasmRunner<int32_t, int32_t, int32_t> r(kExecuteCompiled);                \
     byte val1 = 0;                                                            \
@@ skipping 711 matching lines @@
         WASM_SIMD_I32x4_EXTRACT_LANE(
             0, WASM_LOAD_MEM(MachineType::Simd128(), WASM_ZERO)));
 
   FOR_INT32_INPUTS(i) {
     int32_t expected = *i;
     r.module().WriteMemory(&memory[0], expected);
     CHECK_EQ(expected, r.Call());
   }
 }
 #endif  // V8_TARGET_ARCH_ARM || SIMD_LOWERING_TARGET || V8_TARGET_ARCH_X64