PPC/s390: [wasm-simd] Add i64x2 ne and alltrue

Port 910d92e2

Original Commit Message:

    This is a partial revert of https://crrev.com/c/2457669 to add back
    i64x2.ne and i64x2.all_true, which were accepted into the proposal
    (https://github.com/WebAssembly/simd/issues/419).

    This only implements it for x64 and arm64 on TurboFan, other archs and
    Liftoff will come later.

R=zhin@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I9aedc94f665a7e02426e0abe44cea72176063942
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2668830Reviewed-by: Junliang Yan <junyan@redhat.com>
Reviewed-by: Milad Fa <mfarazma@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#72494}

src/compiler/backend/s390/code-generator-s390.cc

@@ -3257,6 +3257,14 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
              Condition(0), Condition(0), Condition(2));
       break;
     }
+    case kS390_I64x2Ne: {
+      __ vceq(i.OutputSimd128Register(), i.InputSimd128Register(0),
+              i.InputSimd128Register(1), Condition(0), Condition(3));
+      __ vno(i.OutputSimd128Register(), i.OutputSimd128Register(),
+             i.OutputSimd128Register(), Condition(0), Condition(0),
+             Condition(3));
+      break;
+    }
     case kS390_I32x4Ne: {
       __ vceq(i.OutputSimd128Register(), i.InputSimd128Register(0),
               i.InputSimd128Register(1), Condition(0), Condition(2));
@@ -3559,6 +3567,10 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
   __ vtm(kScratchDoubleReg, kScratchDoubleReg, Condition(0), Condition(0),     \
          Condition(0));                                                        \
   __ locgr(Condition(8), dst, temp);
+    case kS390_V64x2AllTrue: {
+      SIMD_ALL_TRUE(3)
+      break;
+    }
     case kS390_V32x4AllTrue: {
       SIMD_ALL_TRUE(2)
       break;

src/compiler/backend/s390/instruction-codes-s390.h

@@ -264,6 +264,7 @@ namespace compiler {
   V(S390_I64x2UConvertI32x4Low)             \
   V(S390_I64x2UConvertI32x4High)            \
   V(S390_I64x2SignSelect)                   \
+  V(S390_I64x2Ne)                           \
   V(S390_I32x4Splat)                        \
   V(S390_I32x4ExtractLane)                  \
   V(S390_I32x4ReplaceLane)                  \
@@ -377,6 +378,7 @@ namespace compiler {
   V(S390_I8x16Shuffle)                      \
   V(S390_I8x16Swizzle)                      \
   V(S390_I8x16SignSelect)                   \
+  V(S390_V64x2AllTrue)                      \
   V(S390_V32x4AllTrue)                      \
   V(S390_V16x8AllTrue)                      \
   V(S390_V8x16AllTrue)                      \

src/compiler/backend/s390/instruction-scheduler-s390.cc

@@ -211,6 +211,7 @@ int InstructionScheduler::GetTargetInstructionFlags(
     case kS390_I64x2UConvertI32x4Low:
     case kS390_I64x2UConvertI32x4High:
     case kS390_I64x2SignSelect:
+    case kS390_I64x2Ne:
     case kS390_I32x4Splat:
     case kS390_I32x4ExtractLane:
     case kS390_I32x4ReplaceLane:
@@ -324,6 +325,7 @@ int InstructionScheduler::GetTargetInstructionFlags(
     case kS390_I8x16Shuffle:
     case kS390_I8x16Swizzle:
     case kS390_I8x16SignSelect:
+    case kS390_V64x2AllTrue:
     case kS390_V32x4AllTrue:
     case kS390_V16x8AllTrue:
     case kS390_V8x16AllTrue: