Revert "[wasm][liftoff][ia32][x64] Detect SIMD NaNs for fuzzing"

This reverts commit b0bcedcc.

Reason for revert: fails nosse3 checks

Original change's description:
> [wasm][liftoff][ia32][x64] Detect SIMD NaNs for fuzzing
>
> R=​clemensb@chromium.org
>
> Bug: v8:11856
> Change-Id: I9764e3e2944690ed0883afdab20afd47fdd4acfa
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979605
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#75512}

Bug: v8:11856
Change-Id: I19a159281f8e6ffc3dd77f35dbdf852bd032c2bc
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3000723
Auto-Submit: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#75515}

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

@@ -4239,13 +4239,6 @@ void LiftoffAssembler::emit_set_if_nan(Register dst, DoubleRegister src,
   UNIMPLEMENTED();
 }
 
-void LiftoffAssembler::emit_s128_set_if_nan(Register dst, DoubleRegister src,
-                                            Register tmp_gp,
-                                            DoubleRegister tmp_fp,
-                                            ValueKind lane_kind) {
-  UNIMPLEMENTED();
-}
-
 void LiftoffStackSlots::Construct(int param_slots) {
   DCHECK_LT(0, slots_.size());
   SortInPushOrder();

src/wasm/baseline/arm64/liftoff-assembler-arm64.h

@@ -3242,13 +3242,6 @@ void LiftoffAssembler::emit_set_if_nan(Register dst, DoubleRegister src,
   UNIMPLEMENTED();
 }
 
-void LiftoffAssembler::emit_s128_set_if_nan(Register dst, DoubleRegister src,
-                                            Register tmp_gp,
-                                            DoubleRegister tmp_fp,
-                                            ValueKind lane_kind) {
-  UNIMPLEMENTED();
-}
-
 void LiftoffStackSlots::Construct(int param_slots) {
   DCHECK_LT(0, slots_.size());
   // The stack pointer is required to be quadword aligned.

src/wasm/baseline/ia32/liftoff-assembler-ia32.h

@@ -4822,22 +4822,6 @@ void LiftoffAssembler::emit_set_if_nan(Register dst, DoubleRegister src,
   bind(&ret);
 }
 
-void LiftoffAssembler::emit_s128_set_if_nan(Register dst, DoubleRegister src,
-                                            Register tmp_gp,
-                                            DoubleRegister tmp_fp,
-                                            ValueKind lane_kind) {
-  if (lane_kind == kF32) {
-    movaps(tmp_fp, src);
-    cmpunordps(tmp_fp, tmp_fp);
-  } else {
-    DCHECK_EQ(lane_kind, kF64);
-    movapd(tmp_fp, src);
-    cmpunordpd(tmp_fp, tmp_fp);
-  }
-  pmovmskb(tmp_gp, tmp_fp);
-  or_(Operand(dst, 0), tmp_gp);
-}
-
 void LiftoffStackSlots::Construct(int param_slots) {
   DCHECK_LT(0, slots_.size());
   SortInPushOrder();

src/wasm/baseline/liftoff-assembler.h

@@ -1458,11 +1458,6 @@ class LiftoffAssembler : public TurboAssembler {
   // Set the i32 at address dst to 1 if src is a NaN.
   inline void emit_set_if_nan(Register dst, DoubleRegister src, ValueKind kind);
 
-  // Set the i32 at address dst to a non-zero value if src contains a NaN.
-  inline void emit_s128_set_if_nan(Register dst, DoubleRegister src,
-                                   Register tmp_gp, DoubleRegister tmp_fp,
-                                   ValueKind lane_kind);
-
   ////////////////////////////////////
   // End of platform-specific part. //
   ////////////////////////////////////

src/wasm/baseline/x64/liftoff-assembler-x64.h

@@ -4371,22 +4371,6 @@ void LiftoffAssembler::emit_set_if_nan(Register dst, DoubleRegister src,
   bind(&ret);
 }
 
-void LiftoffAssembler::emit_s128_set_if_nan(Register dst, DoubleRegister src,
-                                            Register tmp_gp,
-                                            DoubleRegister tmp_fp,
-                                            ValueKind lane_kind) {
-  if (lane_kind == kF32) {
-    movaps(tmp_fp, src);
-    cmpunordps(tmp_fp, tmp_fp);
-  } else {
-    DCHECK_EQ(lane_kind, kF64);
-    movapd(tmp_fp, src);
-    cmpunordpd(tmp_fp, tmp_fp);
-  }
-  pmovmskb(tmp_gp, tmp_fp);
-  orl(Operand(dst, 0), tmp_gp);
-}
-
 void LiftoffStackSlots::Construct(int param_slots) {
   DCHECK_LT(0, slots_.size());
   SortInPushOrder();

test/cctest/wasm/test-liftoff-for-fuzzing.cc

@@ -40,36 +40,6 @@ TEST(NondeterminismUnopF64) {
   CHECK(r.HasNondeterminism());
 }
 
-TEST(NondeterminismUnopF32x4) {
-  WasmRunner<int32_t, float> r(TestExecutionTier::kLiftoffForFuzzing);
-
-  byte value = 0;
-  BUILD(r,
-        WASM_SIMD_UNOP(kExprF32x4Ceil,
-                       WASM_SIMD_F32x4_SPLAT(WASM_LOCAL_GET(value))),
-        kExprDrop, WASM_ONE);
-  CHECK(!r.HasNondeterminism());
-  r.CheckCallViaJS(1, 0.0);
-  CHECK(!r.HasNondeterminism());
-  r.CheckCallViaJS(1, std::nanf(""));
-  CHECK(r.HasNondeterminism());
-}
-
-TEST(NondeterminismUnopF64x2) {
-  WasmRunner<int32_t, double> r(TestExecutionTier::kLiftoffForFuzzing);
-
-  byte value = 0;
-  BUILD(r,
-        WASM_SIMD_UNOP(kExprF64x2Ceil,
-                       WASM_SIMD_F64x2_SPLAT(WASM_LOCAL_GET(value))),
-        kExprDrop, WASM_ONE);
-  CHECK(!r.HasNondeterminism());
-  r.CheckCallViaJS(1, 0.0);
-  CHECK(!r.HasNondeterminism());
-  r.CheckCallViaJS(1, std::nan(""));
-  CHECK(r.HasNondeterminism());
-}
-
 TEST(NondeterminismBinop) {
   WasmRunner<float> r(TestExecutionTier::kLiftoffForFuzzing);