Reland "[wasm-simd][scalar-lowering] Enable some spec tests"

This reverts commit 2bc09b89.

Reason for revert: Skip some tests on ARM devices for now

Original change's description:
> Revert "[wasm-simd][scalar-lowering] Enable some spec tests"
> 
> This reverts commit cfe9544a.
> 
> Reason for revert: Some spec tests fail:
> https://ci.chromium.org/p/v8/builders/ci/V8%20Arm%20-%20debug/15933
> 
> Original change's description:
> > [wasm-simd][scalar-lowering] Enable some spec tests
> > 
> > These tests can now be enabled as we implemented more scalar lowering
> > support.
> > 
> > Bug: v8:10507
> > Change-Id: Ida5f896300e074db079ec24720302729b0582d9d
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2411774
> > Reviewed-by: Bill Budge <bbudge@chromium.org>
> > Commit-Queue: Zhi An Ng <zhin@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#70006}
> 
> TBR=bbudge@chromium.org,zhin@chromium.org
> 
> Change-Id: Idb2da40178860f045ffab9ab5b2c8b1f2ebafcf6
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: v8:10507
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2419036
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#70010}

TBR=bbudge@chromium.org,zhin@chromium.org

# Not skipping CQ checks because this is a reland.

Bug: v8:10507
Change-Id: Ifaf15c49ece65cfeaef83b0ace6cfbb804e93a4d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2419039Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70078}

test/wasm-spec-tests/wasm-spec-tests.status

@@ -41,32 +41,25 @@
   # Scalar lowering is incomplete, we skip these and selectively enable as
   # we finish the implementation, see v8:10507.
   'proposals/simd/simd_bit_shift' : [PASS, FAIL],
-  'proposals/simd/simd_boolean' : [PASS, FAIL],
-  'proposals/simd/simd_const' : [PASS, FAIL],
   'proposals/simd/simd_conversions' : [PASS, FAIL],
-  'proposals/simd/simd_f32x4': [PASS, FAIL],
-  'proposals/simd/simd_f32x4_arith': [PASS, FAIL],
-  'proposals/simd/simd_f32x4_cmp': [PASS, FAIL],
   'proposals/simd/simd_f64x2': [PASS, FAIL],
   'proposals/simd/simd_f64x2_arith' : [PASS, FAIL],
   'proposals/simd/simd_f64x2_cmp' : [PASS, FAIL],
-  'proposals/simd/simd_i16x8_arith' : [PASS, FAIL],
-  'proposals/simd/simd_i16x8_arith2' : [PASS, FAIL],
-  'proposals/simd/simd_i16x8_cmp' : [PASS, FAIL],
-  'proposals/simd/simd_i16x8_sat_arith' : [PASS, FAIL],
   'proposals/simd/simd_i64x2_arith' : [PASS, FAIL],
-  'proposals/simd/simd_i8x16_arith' : [PASS, FAIL],
-  'proposals/simd/simd_i8x16_arith2' : [PASS, FAIL],
-  'proposals/simd/simd_i8x16_cmp' : [PASS, FAIL],
-  'proposals/simd/simd_i8x16_sat_arith' : [PASS, FAIL],
   'proposals/simd/simd_lane' : [PASS, FAIL],
-  'proposals/simd/simd_load' : [PASS, FAIL],
   'proposals/simd/simd_load_extend' : [PASS, FAIL],
   'proposals/simd/simd_load_splat' : [PASS, FAIL],
   'proposals/simd/simd_splat' : [PASS, FAIL],
 
 }],  # ALWAYS
 
+['arch == arm and not simulator_run', {
+  # See https://crbug.com/v8/10938 denormals not handled correctly on ARM.
+  'proposals/simd/simd_f32x4': [PASS, FAIL],
+  'proposals/simd/simd_f32x4_arith': [PASS, FAIL],
+  'proposals/simd/simd_f32x4_cmp': [PASS, FAIL],
+}],  # arch == arm and not simulator_run
+
 ['arch == mipsel or arch == mips64el or arch == mips or arch == mips64', {
   # These tests fail because mips does not support the correct NaN bit patterns.
   'float_misc': [SKIP],