PPC [liftoff]: Implement simd 8x16 population count

Drive-by: dtype and stype are removed from SIMD_UNOP_LIST,
toSimd() requires them to all be of type `fp`.

Change-Id: Ifdfe187e2b143fb8fa785c44344bea38ea7e10f8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3916553
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Reviewed-by: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#83431}

src/codegen/ppc/macro-assembler-ppc.cc

@@ -3779,7 +3779,8 @@ SIMD_SHIFT_LIST(EMIT_SIMD_SHIFT)
   V(F32x4Floor, xvrspim)  \
   V(F32x4Trunc, xvrspiz)  \
   V(I64x2Neg, vnegd)      \
-  V(I32x4Neg, vnegw)
+  V(I32x4Neg, vnegw)      \
+  V(I8x16Popcnt, vpopcntb)
 
 #define EMIT_SIMD_UNOP(name, op)                                        \
   void TurboAssembler::name(Simd128Register dst, Simd128Register src) { \

src/codegen/ppc/macro-assembler-ppc.h

@@ -1174,7 +1174,8 @@ class V8_EXPORT_PRIVATE TurboAssembler : public TurboAssemblerBase {
   V(F32x4Floor)           \
   V(F32x4Trunc)           \
   V(I64x2Neg)             \
-  V(I32x4Neg)
+  V(I32x4Neg)             \
+  V(I8x16Popcnt)
 
 #define PROTOTYPE_SIMD_UNOP(name) \
   void name(Simd128Register dst, Simd128Register src);

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

@@ -2293,7 +2293,8 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
   V(F32x4Sqrt)            \
   V(F32x4Ceil)            \
   V(F32x4Floor)           \
-  V(F32x4Trunc)
+  V(F32x4Trunc)           \
+  V(I8x16Popcnt)
 
 #define EMIT_SIMD_UNOP(name)                                       \
   case kPPC_##name: {                                              \
@@ -3362,10 +3363,6 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
       __ vinsertd(dst, kScratchSimd128Reg, Operand(lane_number));
       break;
     }
-    case kPPC_I8x16Popcnt: {
-      __ vpopcntb(i.OutputSimd128Register(), i.InputSimd128Register(0));
-      break;
-    }
     case kPPC_StoreCompressTagged: {
       size_t index = 0;
       AddressingMode mode = kMode_None;

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

@@ -1877,25 +1877,26 @@ SIMD_SHIFT_RI_LIST(EMIT_SIMD_SHIFT_RI)
 #undef SIMD_SHIFT_RI_LIST
 
 #define SIMD_UNOP_LIST(V)                \
-  V(f64x2_abs, F64x2Abs, fp, fp, , void)         \
-  V(f64x2_neg, F64x2Neg, fp, fp, , void)         \
-  V(f64x2_sqrt, F64x2Sqrt, fp, fp, , void)       \
-  V(f64x2_ceil, F64x2Ceil, fp, fp, true, bool)   \
-  V(f64x2_floor, F64x2Floor, fp, fp, true, bool) \
-  V(f64x2_trunc, F64x2Trunc, fp, fp, true, bool) \
-  V(f32x4_abs, F32x4Abs, fp, fp, , void)         \
-  V(f32x4_neg, F32x4Neg, fp, fp, , void)         \
-  V(i64x2_neg, I64x2Neg, fp, fp, , void)         \
-  V(i32x4_neg, I32x4Neg, fp, fp, , void)         \
-  V(f32x4_sqrt, F32x4Sqrt, fp, fp, , void)       \
-  V(f32x4_ceil, F32x4Ceil, fp, fp, true, bool)   \
-  V(f32x4_floor, F32x4Floor, fp, fp, true, bool) \
-  V(f32x4_trunc, F32x4Trunc, fp, fp, true, bool)
-
-#define EMIT_SIMD_UNOP(name, op, dtype, stype, return_val, return_type) \
+  V(f64x2_abs, F64x2Abs, , void)         \
+  V(f64x2_neg, F64x2Neg, , void)         \
+  V(f64x2_sqrt, F64x2Sqrt, , void)       \
+  V(f64x2_ceil, F64x2Ceil, true, bool)   \
+  V(f64x2_floor, F64x2Floor, true, bool) \
+  V(f64x2_trunc, F64x2Trunc, true, bool) \
+  V(f32x4_abs, F32x4Abs, , void)         \
+  V(f32x4_neg, F32x4Neg, , void)         \
+  V(i64x2_neg, I64x2Neg, , void)         \
+  V(i32x4_neg, I32x4Neg, , void)         \
+  V(f32x4_sqrt, F32x4Sqrt, , void)       \
+  V(f32x4_ceil, F32x4Ceil, true, bool)   \
+  V(f32x4_floor, F32x4Floor, true, bool) \
+  V(f32x4_trunc, F32x4Trunc, true, bool) \
+  V(i8x16_popcnt, I8x16Popcnt, , void)
+
+#define EMIT_SIMD_UNOP(name, op, return_val, return_type)          \
   return_type LiftoffAssembler::emit_##name(LiftoffRegister dst,   \
                                             LiftoffRegister src) { \
-    op(dst.dtype().toSimd(), src.stype().toSimd());                     \
+    op(dst.fp().toSimd(), src.fp().toSimd());                      \
     return return_val;                                             \
   }
 SIMD_UNOP_LIST(EMIT_SIMD_UNOP)
@@ -2504,11 +2505,6 @@ void LiftoffAssembler::emit_i8x16_shuffle(LiftoffRegister dst,
   bailout(kSimd, "i8x16_shuffle");
 }
 
-void LiftoffAssembler::emit_i8x16_popcnt(LiftoffRegister dst,
-                                         LiftoffRegister src) {
-  bailout(kSimd, "i8x16.popcnt");
-}
-
 void LiftoffAssembler::emit_v128_anytrue(LiftoffRegister dst,
                                          LiftoffRegister src) {
   bailout(kSimd, "v8x16_anytrue");