[wasm-simd] Implement f64x2 splat extract_lane replace_lane for ia32

Bug: v8:9728
Change-Id: I8d993368fc23ab9e8cc08e31f4405678ec4ce824
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803790Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63955}

src/codegen/ia32/assembler-ia32.cc

@@ -2405,6 +2405,16 @@ void Assembler::shufps(XMMRegister dst, XMMRegister src, byte imm8) {
   EMIT(imm8);
 }
 
+void Assembler::shufpd(XMMRegister dst, XMMRegister src, byte imm8) {
+  DCHECK(is_uint8(imm8));
+  EnsureSpace ensure_space(this);
+  EMIT(0x66);
+  EMIT(0x0F);
+  EMIT(0xC6);
+  emit_sse_operand(dst, src);
+  EMIT(imm8);
+}
+
 void Assembler::movdqa(Operand dst, XMMRegister src) {
   EnsureSpace ensure_space(this);
   EMIT(0x66);
@@ -2818,6 +2828,13 @@ void Assembler::vpd(byte op, XMMRegister dst, XMMRegister src1, Operand src2) {
   vinstr(op, dst, src1, src2, k66, k0F, kWIG);
 }
 
+void Assembler::vshufpd(XMMRegister dst, XMMRegister src1, Operand src2,
+                        byte imm8) {
+  DCHECK(is_uint8(imm8));
+  vpd(0xC6, dst, src1, src2);
+  EMIT(imm8);
+}
+
 void Assembler::vcmpps(XMMRegister dst, XMMRegister src1, Operand src2,
                        uint8_t cmp) {
   vps(0xC2, dst, src1, src2);

src/codegen/ia32/assembler-ia32.h

@@ -850,6 +850,7 @@ class V8_EXPORT_PRIVATE Assembler : public AssemblerBase {
   void movups(XMMRegister dst, Operand src);
   void movups(Operand dst, XMMRegister src);
   void shufps(XMMRegister dst, XMMRegister src, byte imm8);
+  void shufpd(XMMRegister dst, XMMRegister src, byte imm8);
 
   void maxss(XMMRegister dst, XMMRegister src) { maxss(dst, Operand(src)); }
   void maxss(XMMRegister dst, Operand src);
@@ -1319,12 +1320,18 @@ class V8_EXPORT_PRIVATE Assembler : public AssemblerBase {
   }
   void vmovaps(XMMRegister dst, XMMRegister src) { vmovaps(dst, Operand(src)); }
   void vmovaps(XMMRegister dst, Operand src) { vps(0x28, dst, xmm0, src); }
+  void vmovapd(XMMRegister dst, XMMRegister src) { vmovapd(dst, Operand(src)); }
+  void vmovapd(XMMRegister dst, Operand src) { vpd(0x28, dst, xmm0, src); }
   void vmovups(XMMRegister dst, XMMRegister src) { vmovups(dst, Operand(src)); }
   void vmovups(XMMRegister dst, Operand src) { vps(0x10, dst, xmm0, src); }
   void vshufps(XMMRegister dst, XMMRegister src1, XMMRegister src2, byte imm8) {
     vshufps(dst, src1, Operand(src2), imm8);
   }
   void vshufps(XMMRegister dst, XMMRegister src1, Operand src2, byte imm8);
+  void vshufpd(XMMRegister dst, XMMRegister src1, XMMRegister src2, byte imm8) {
+    vshufpd(dst, src1, Operand(src2), imm8);
+  }
+  void vshufpd(XMMRegister dst, XMMRegister src1, Operand src2, byte imm8);
 
   void vpsllw(XMMRegister dst, XMMRegister src, uint8_t imm8);
   void vpslld(XMMRegister dst, XMMRegister src, uint8_t imm8);

src/compiler/backend/ia32/code-generator-ia32.cc

@@ -1825,6 +1825,79 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
       }
       break;
     }
+    case kSSEF64x2Splat: {
+      DCHECK_EQ(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
+      XMMRegister dst = i.OutputSimd128Register();
+      __ shufpd(dst, dst, 0x0);
+      break;
+    }
+    case kAVXF64x2Splat: {
+      CpuFeatureScope avx_scope(tasm(), AVX);
+      XMMRegister src = i.InputDoubleRegister(0);
+      __ vshufpd(i.OutputSimd128Register(), src, src, 0x0);
+      break;
+    }
+    case kSSEF64x2ExtractLane: {
+      DCHECK_EQ(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
+      XMMRegister dst = i.OutputDoubleRegister();
+      int8_t lane = i.InputInt8(1);
+      if (lane != 0) {
+        DCHECK_LT(lane, 4);
+        __ shufpd(dst, dst, lane);
+      }
+      break;
+    }
+    case kAVXF64x2ExtractLane: {
+      CpuFeatureScope avx_scope(tasm(), AVX);
+      XMMRegister dst = i.OutputDoubleRegister();
+      XMMRegister src = i.InputSimd128Register(0);
+      int8_t lane = i.InputInt8(1);
+      if (lane == 0) {
+        if (dst != src) __ vmovapd(dst, src);
+      } else {
+        DCHECK_LT(lane, 4);
+        __ vshufpd(dst, src, src, lane);
+      }
+      break;
+    }
+    case kSSEF64x2ReplaceLane: {
+      DCHECK_EQ(i.OutputSimd128Register(), i.InputSimd128Register(0));
+      CpuFeatureScope sse_scope(tasm(), SSE4_1);
+      XMMRegister dst = i.OutputSimd128Register();
+      int8_t lane = i.InputInt8(1);
+      DoubleRegister rep = i.InputDoubleRegister(2);
+
+      // insertps takes a mask which contains (high to low):
+      // - 2 bit specifying source float element to copy
+      // - 2 bit specifying destination float element to write to
+      // - 4 bits specifying which elements of the destination to zero
+      DCHECK_LT(lane, 2);
+      if (lane == 0) {
+        __ insertps(dst, rep, 0b00000000);
+        __ insertps(dst, rep, 0b01010000);
+      } else {
+        __ insertps(dst, rep, 0b00100000);
+        __ insertps(dst, rep, 0b01110000);
+      }
+      break;
+    }
+    case kAVXF64x2ReplaceLane: {
+      CpuFeatureScope avx_scope(tasm(), AVX);
+      XMMRegister dst = i.OutputSimd128Register();
+      XMMRegister src = i.InputSimd128Register(0);
+      int8_t lane = i.InputInt8(1);
+      DoubleRegister rep = i.InputDoubleRegister(2);
+
+      DCHECK_LT(lane, 2);
+      if (lane == 0) {
+        __ vinsertps(dst, src, rep, 0b00000000);
+        __ vinsertps(dst, src, rep, 0b01010000);
+      } else {
+        __ vinsertps(dst, src, rep, 0b10100000);
+        __ vinsertps(dst, src, rep, 0b11110000);
+      }
+      break;
+    }
     case kSSEF32x4Splat: {
       DCHECK_EQ(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
       XMMRegister dst = i.OutputSimd128Register();

src/compiler/backend/ia32/instruction-codes-ia32.h

@@ -116,6 +116,12 @@ namespace compiler {
   V(IA32PushSimd128)               \
   V(IA32Poke)                      \
   V(IA32Peek)                      \
+  V(SSEF64x2Splat)                 \
+  V(AVXF64x2Splat)                 \
+  V(SSEF64x2ExtractLane)           \
+  V(AVXF64x2ExtractLane)           \
+  V(SSEF64x2ReplaceLane)           \
+  V(AVXF64x2ReplaceLane)           \
   V(SSEF32x4Splat)                 \
   V(AVXF32x4Splat)                 \
   V(SSEF32x4ExtractLane)           \

src/compiler/backend/ia32/instruction-scheduler-ia32.cc

@@ -97,6 +97,12 @@ int InstructionScheduler::GetTargetInstructionFlags(
     case kAVXFloat32Neg:
     case kIA32BitcastFI:
     case kIA32BitcastIF:
+    case kSSEF64x2Splat:
+    case kAVXF64x2Splat:
+    case kSSEF64x2ExtractLane:
+    case kAVXF64x2ExtractLane:
+    case kSSEF64x2ReplaceLane:
+    case kAVXF64x2ReplaceLane:
     case kSSEF32x4Splat:
     case kAVXF32x4Splat:
     case kSSEF32x4ExtractLane:

src/compiler/backend/ia32/instruction-selector-ia32.cc

@@ -2000,6 +2000,14 @@ void InstructionSelector::VisitWord32AtomicPairCompareExchange(Node* node) {
   V(I8x16ShrS)                            \
   V(I8x16ShrU)
 
+void InstructionSelector::VisitF64x2Splat(Node* node) {
+  VisitRRSimd(this, node, kAVXF64x2Splat, kSSEF64x2Splat);
+}
+
+void InstructionSelector::VisitF64x2ExtractLane(Node* node) {
+  VisitRRISimd(this, node, kAVXF64x2ExtractLane, kSSEF64x2ExtractLane);
+}
+
 void InstructionSelector::VisitF32x4Splat(Node* node) {
   VisitRRSimd(this, node, kAVXF32x4Splat, kSSEF32x4Splat);
 }
@@ -2091,6 +2099,28 @@ VISIT_SIMD_REPLACE_LANE(F32x4)
 #undef VISIT_SIMD_REPLACE_LANE
 #undef SIMD_INT_TYPES
 
+// The difference between this and VISIT_SIMD_REPLACE_LANE is that this forces
+// operand2 to be UseRegister, because the codegen relies on insertps using
+// registers.
+// TODO(v8:9764) Remove this UseRegister requirement
+#define VISIT_SIMD_REPLACE_LANE_USE_REG(Type)                            \
+  void InstructionSelector::Visit##Type##ReplaceLane(Node* node) {       \
+    IA32OperandGenerator g(this);                                        \
+    InstructionOperand operand0 = g.UseRegister(node->InputAt(0));       \
+    InstructionOperand operand1 =                                        \
+        g.UseImmediate(OpParameter<int32_t>(node->op()));                \
+    InstructionOperand operand2 = g.UseRegister(node->InputAt(1));       \
+    if (IsSupported(AVX)) {                                              \
+      Emit(kAVX##Type##ReplaceLane, g.DefineAsRegister(node), operand0,  \
+           operand1, operand2);                                          \
+    } else {                                                             \
+      Emit(kSSE##Type##ReplaceLane, g.DefineSameAsFirst(node), operand0, \
+           operand1, operand2);                                          \
+    }                                                                    \
+  }
+VISIT_SIMD_REPLACE_LANE_USE_REG(F64x2)
+#undef VISIT_SIMD_REPLACE_LANE_USE_REG
+
 #define VISIT_SIMD_SHIFT(Opcode)                               \
   void InstructionSelector::Visit##Opcode(Node* node) {        \
     VisitRROSimdShift(this, node, kAVX##Opcode, kSSE##Opcode); \

src/compiler/backend/instruction-selector.cc

@@ -2621,9 +2621,11 @@ void InstructionSelector::VisitWord64AtomicCompareExchange(Node* node) {
 
 #if !V8_TARGET_ARCH_X64
 #if !V8_TARGET_ARCH_ARM64
+#if !V8_TARGET_ARCH_IA32
 void InstructionSelector::VisitF64x2Splat(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitF64x2ExtractLane(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitF64x2ReplaceLane(Node* node) { UNIMPLEMENTED(); }
+#endif  // !V8_TARGET_ARCH_IA32
 void InstructionSelector::VisitF64x2Abs(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitF64x2Neg(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitF64x2Sqrt(Node* node) { UNIMPLEMENTED(); }

src/diagnostics/ia32/disasm-ia32.cc

@@ -1216,6 +1216,13 @@ int DisassemblerIA32::AVXInstruction(byte* data) {
         AppendToBuffer(",%d", Imm8(current));
         current++;
         break;
+      case 0xC6:
+        AppendToBuffer("vshufpd %s,%s,", NameOfXMMRegister(regop),
+                       NameOfXMMRegister(vvvv));
+        current += PrintRightXMMOperand(current);
+        AppendToBuffer(",%d", Imm8(current));
+        current++;
+        break;
 #define DECLARE_SSE_AVX_DIS_CASE(instruction, notUsed1, notUsed2, opcode) \
   case 0x##opcode: {                                                      \
     AppendToBuffer("v" #instruction " %s,%s,", NameOfXMMRegister(regop),  \
@@ -2269,6 +2276,15 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
             data += PrintRightOperand(data);
             AppendToBuffer(",%d", Imm8(data));
             data++;
+          } else if (*data == 0xC6) {
+            // shufpd xmm, xmm/m128, imm8
+            data++;
+            int mod, regop, rm;
+            get_modrm(*data, &mod, &regop, &rm);
+            AppendToBuffer("shufpd %s,", NameOfXMMRegister(regop));
+            data += PrintRightXMMOperand(data);
+            AppendToBuffer(",%d", Imm8(data));
+            data++;
           } else if (*data == 0xE7) {
             data++;
             int mod, regop, rm;

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

@@ -877,6 +877,7 @@ WASM_SIMD_TEST_NO_LOWERING(F32x4Qfms) {
 }
 #endif  // V8_TARGET_ARCH_X64
 
+#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_IA32
 #if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 WASM_SIMD_TEST_NO_LOWERING(I64x2Splat) {
   WasmRunner<int32_t, int64_t> r(execution_tier, lower_simd);
@@ -1072,6 +1073,7 @@ WASM_SIMD_TEST_NO_LOWERING(I64x2GeU) {
   RunI64x2BinOpTest(execution_tier, lower_simd, kExprI64x2GeU,
                     UnsignedGreaterEqual);
 }
+#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 
 WASM_SIMD_TEST_NO_LOWERING(F64x2Splat) {
   WasmRunner<int32_t, double> r(execution_tier, lower_simd);
@@ -1095,6 +1097,7 @@ WASM_SIMD_TEST_NO_LOWERING(F64x2Splat) {
   }
 }
 
+#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 WASM_SIMD_TEST_NO_LOWERING(F64x2ExtractLaneWithI64x2) {
   WasmRunner<int64_t> r(execution_tier, lower_simd);
   BUILD(r, WASM_IF_ELSE_L(
@@ -1104,6 +1107,7 @@ WASM_SIMD_TEST_NO_LOWERING(F64x2ExtractLaneWithI64x2) {
                WASM_I64V(1), WASM_I64V(0)));
   CHECK_EQ(1, r.Call());
 }
+#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 
 WASM_SIMD_TEST_NO_LOWERING(F64x2ExtractLane) {
   WasmRunner<double, double> r(execution_tier, lower_simd);
@@ -1127,6 +1131,7 @@ WASM_SIMD_TEST_NO_LOWERING(F64x2ExtractLane) {
   }
 }
 
+#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 WASM_SIMD_TEST_NO_LOWERING(I64x2ExtractWithF64x2) {
   WasmRunner<int64_t> r(execution_tier, lower_simd);
   BUILD(r, WASM_IF_ELSE_L(
@@ -1136,6 +1141,7 @@ WASM_SIMD_TEST_NO_LOWERING(I64x2ExtractWithF64x2) {
                WASM_I64V(1), WASM_I64V(0)));
   CHECK_EQ(1, r.Call());
 }
+#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 
 WASM_SIMD_TEST_NO_LOWERING(F64x2ReplaceLane) {
   WasmRunner<int32_t> r(execution_tier, lower_simd);
@@ -1156,6 +1162,7 @@ WASM_SIMD_TEST_NO_LOWERING(F64x2ReplaceLane) {
   }
 }
 
+#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 bool IsExtreme(double x) {
   double abs_x = std::fabs(x);
   const double kSmallFloatThreshold = 1.0e-298;
@@ -1278,11 +1285,9 @@ WASM_SIMD_TEST_NO_LOWERING(F64x2Neg) {
   RunF64x2UnOpTest(execution_tier, lower_simd, kExprF64x2Neg, Negate);
 }
 
-#if V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 WASM_SIMD_TEST_NO_LOWERING(F64x2Sqrt) {
   RunF64x2UnOpTest(execution_tier, lower_simd, kExprF64x2Sqrt, Sqrt);
 }
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 
 void RunF64x2BinOpTest(ExecutionTier execution_tier, LowerSimd lower_simd,
                        WasmOpcode opcode, DoubleBinOp expected_op) {
@@ -1413,6 +1418,7 @@ WASM_SIMD_TEST_NO_LOWERING(I64x2Mul) {
   RunI64x2BinOpTest(execution_tier, lower_simd, kExprI64x2Mul,
                     base::MulWithWraparound);
 }
+#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
 
 #if V8_TARGET_ARCH_X64
 WASM_SIMD_TEST_NO_LOWERING(I64x2MinS) {
@@ -1481,7 +1487,7 @@ WASM_SIMD_TEST_NO_LOWERING(F64x2Qfms) {
   }
 }
 #endif  // V8_TARGET_ARCH_X64
-#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64
+#endif  // V8_TARGET_ARCH_X64 || V8_TARGET_ARCH_ARM64 || V8_TARGET_ARCH_IA32
 
 WASM_SIMD_TEST(I32x4Splat) {
   WasmRunner<int32_t, int32_t> r(execution_tier, lower_simd);