[mips][wasm-simd][liftoff] Implement some SIMD operations

Implement i64x2 widen i32x4, and saturating rounding multiply high.

Port: 9cb7e571

Port: 39f2e3de
Change-Id: Ib88aca3e3f66eb4a12be4d2cf4e51ac930849cc0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2632353Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Auto-Submit: Liu yu <liuyu@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#72109}

src/wasm/baseline/mips/liftoff-assembler-mips.h

@@ -1792,6 +1792,12 @@ SIMD_BINOP(i64x2_extmul_high_i32x4_u, ilvl_w, dotp_u_d)
 
 #undef SIMD_BINOP
 
+void LiftoffAssembler::emit_i16x8_q15mulr_sat_s(LiftoffRegister dst,
+                                                LiftoffRegister src1,
+                                                LiftoffRegister src2) {
+  bailout(kSimd, "i16x8_q15mulr_sat_s");
+}
+
 void LiftoffAssembler::emit_i8x16_eq(LiftoffRegister dst, LiftoffRegister lhs,
                                      LiftoffRegister rhs) {
   bailout(kSimd, "emit_i8x16_eq");
@@ -2577,6 +2583,26 @@ void LiftoffAssembler::emit_i32x4_uconvert_i16x8_high(LiftoffRegister dst,
   bailout(kSimd, "emit_i32x4_uconvert_i16x8_high");
 }
 
+void LiftoffAssembler::emit_i64x2_sconvert_i32x4_low(LiftoffRegister dst,
+                                                     LiftoffRegister src) {
+  bailout(kSimd, "emit_i64x2_sconvert_i32x4_low");
+}
+
+void LiftoffAssembler::emit_i64x2_sconvert_i32x4_high(LiftoffRegister dst,
+                                                      LiftoffRegister src) {
+  bailout(kSimd, "emit_i64x2_sconvert_i32x4_high");
+}
+
+void LiftoffAssembler::emit_i64x2_uconvert_i32x4_low(LiftoffRegister dst,
+                                                     LiftoffRegister src) {
+  bailout(kSimd, "emit_i64x2_uconvert_i32x4_low");
+}
+
+void LiftoffAssembler::emit_i64x2_uconvert_i32x4_high(LiftoffRegister dst,
+                                                      LiftoffRegister src) {
+  bailout(kSimd, "emit_i64x2_uconvert_i32x4_high");
+}
+
 void LiftoffAssembler::emit_i8x16_rounding_average_u(LiftoffRegister dst,
                                                      LiftoffRegister lhs,
                                                      LiftoffRegister rhs) {

src/wasm/baseline/mips64/liftoff-assembler-mips64.h

@@ -1719,6 +1719,12 @@ SIMD_BINOP(i64x2, i32x4_u, MSAU32)
 
 #undef SIMD_BINOP
 
+void LiftoffAssembler::emit_i16x8_q15mulr_sat_s(LiftoffRegister dst,
+                                                LiftoffRegister src1,
+                                                LiftoffRegister src2) {
+  mulr_q_h(dst.fp().toW(), src1.fp().toW(), src2.fp().toW());
+}
+
 void LiftoffAssembler::emit_i8x16_eq(LiftoffRegister dst, LiftoffRegister lhs,
                                      LiftoffRegister rhs) {
   ceq_b(dst.fp().toW(), lhs.fp().toW(), rhs.fp().toW());
@@ -2691,6 +2697,32 @@ void LiftoffAssembler::emit_i32x4_uconvert_i16x8_high(LiftoffRegister dst,
   ilvl_h(dst.fp().toW(), kSimd128RegZero, src.fp().toW());
 }
 
+void LiftoffAssembler::emit_i64x2_sconvert_i32x4_low(LiftoffRegister dst,
+                                                     LiftoffRegister src) {
+  ilvr_w(kSimd128ScratchReg, src.fp().toW(), src.fp().toW());
+  slli_d(dst.fp().toW(), kSimd128ScratchReg, 32);
+  srai_d(dst.fp().toW(), dst.fp().toW(), 32);
+}
+
+void LiftoffAssembler::emit_i64x2_sconvert_i32x4_high(LiftoffRegister dst,
+                                                      LiftoffRegister src) {
+  ilvl_w(kSimd128ScratchReg, src.fp().toW(), src.fp().toW());
+  slli_d(dst.fp().toW(), kSimd128ScratchReg, 32);
+  srai_d(dst.fp().toW(), dst.fp().toW(), 32);
+}
+
+void LiftoffAssembler::emit_i64x2_uconvert_i32x4_low(LiftoffRegister dst,
+                                                     LiftoffRegister src) {
+  xor_v(kSimd128RegZero, kSimd128RegZero, kSimd128RegZero);
+  ilvr_w(dst.fp().toW(), kSimd128RegZero, src.fp().toW());
+}
+
+void LiftoffAssembler::emit_i64x2_uconvert_i32x4_high(LiftoffRegister dst,
+                                                      LiftoffRegister src) {
+  xor_v(kSimd128RegZero, kSimd128RegZero, kSimd128RegZero);
+  ilvl_w(dst.fp().toW(), kSimd128RegZero, src.fp().toW());
+}
+
 void LiftoffAssembler::emit_i8x16_rounding_average_u(LiftoffRegister dst,
                                                      LiftoffRegister lhs,
                                                      LiftoffRegister rhs) {