[SYCL][ESIMD] Fix a few issues with scatter(usm, ...) (#12585)

Problems found by Gregory (thanks!):

1) There were some duplicated tests, remove those

2) We didn't test non-LSC mask on Gen12

3) We get an ambiguous call because we had an old function that didn't
have VS, but the new functions have default VS=1, so we don't need the
old one.

4) When we pass a simd_view for the vals, we got a template match
failure. This is the same issue we hit in the compile-time tests where
even if we have a simd_view overload the compiler can't infer N, so we
need to provide T,N anyway, so add that in the tests.

I tested this on Gen12.

Signed-off-by: Sarnie, Nick <nick.sarnie@intel.com>

sycl/include/sycl/ext/intel/esimd/memory.hpp

@@ -854,24 +854,6 @@ scatter(T *p, OffsetSimdViewT byte_offsets, simd<T, N> vals,
   scatter<T, N, VS>(p, byte_offsets.read(), vals, Mask, props);
 }
 
-/// A variation of \c scatter API with \c offsets represented as \c simd_view
-/// object.
-///
-/// @tparam Tx Element type, must be of size 4 or less.
-/// @tparam N Number of elements to write; can be \c 1, \c 2, \c 4, \c 8, \c 16
-///   or \c 32.
-/// @param p The base address.
-/// @param offsets A simd_view of 32-bit or 64-bit offsets in bytes. For each
-/// lane \c i,   ((byte*)p + offsets[i]) must be element size aligned.
-/// @param vals The vector to scatter.
-/// @param mask The access mask, defaults to all 1s.
-///
-template <typename Tx, int N, typename OffsetObjT, typename RegionTy>
-__ESIMD_API void scatter(Tx *p, simd_view<OffsetObjT, RegionTy> offsets,
-                         simd<Tx, N> vals, simd_mask<N> mask = 1) {
-  scatter<Tx, N, 1>(p, offsets.read(), vals, mask);
-}
-
 /// A variation of \c scatter API with \c offsets represented as scalar.
 ///
 /// @tparam Tx Element type, must be of size 4 or less.

sycl/test-e2e/ESIMD/unified_memory_api/Inputs/scatter.hpp

@@ -133,9 +133,9 @@ bool testUSM(queue Q, uint32_t MaskStride,
                else if (GlobalID % 4 == 1)
                  scatter(Out, ByteOffsetsView, Vals, Pred);
                else if (GlobalID % 4 == 2)
-                 scatter(Out, ByteOffsets, ValsView, Pred);
+                 scatter<T, N>(Out, ByteOffsets, ValsView, Pred);
                else if (GlobalID % 4 == 3)
-                 scatter(Out, ByteOffsetsView, ValsView, Pred);
+                 scatter<T, N>(Out, ByteOffsetsView, ValsView, Pred);
              }
            } else { // UseMask == false
              if constexpr (UseProperties) {
@@ -182,20 +182,25 @@ template <typename T, TestFeatures Features> bool testUSM(queue Q) {
 
   bool Passed = true;
 
-  // // Test scatter() that is available on Gen12 and PVC.
+  // Test scatter() that is available on Gen12 and PVC.
   Passed &= testUSM<T, 1, 1, !CheckMask, CheckProperties>(Q, 2, EmptyProps);
   Passed &= testUSM<T, 2, 1, !CheckMask, CheckProperties>(Q, 1, EmptyProps);
-  Passed &= testUSM<T, 1, 1, !CheckMask, CheckProperties>(Q, 2, EmptyProps);
+  Passed &= testUSM<T, 4, 1, !CheckMask, CheckProperties>(Q, 2, EmptyProps);
   Passed &= testUSM<T, 8, 1, !CheckMask, CheckProperties>(Q, 2, EmptyProps);
   Passed &= testUSM<T, 16, 1, !CheckMask, CheckProperties>(Q, 2, EmptyProps);
-  Passed &= testUSM<T, 16, 1, !CheckMask, CheckProperties>(Q, 2, EmptyProps);
 
   Passed &= testUSM<T, 32, 1, !CheckMask, CheckProperties>(Q, 2, EmptyProps);
 
-  // // Test scatter() without passing compile-time properties argument.
+  // Test scatter() without passing compile-time properties argument.
   Passed &= testUSM<T, 16, 1, !CheckMask, !CheckProperties>(Q, 2, EmptyProps);
   Passed &= testUSM<T, 32, 1, !CheckMask, !CheckProperties>(Q, 2, EmptyProps);
 
+  // Test scatter() with mask
+  Passed &= testUSM<T, 2, 1, CheckMask, CheckProperties>(Q, 2, EmptyProps);
+  Passed &= testUSM<T, 4, 1, CheckMask, CheckProperties>(Q, 2, EmptyProps);
+  Passed &= testUSM<T, 8, 1, CheckMask, CheckProperties>(Q, 2, EmptyProps);
+  Passed &= testUSM<T, 16, 1, CheckMask, !CheckProperties>(Q, 2, EmptyProps);
+
   if constexpr (Features == TestFeatures::PVC ||
                 Features == TestFeatures::DG2) {
     properties LSCProps{cache_hint_L1<cache_hint::streaming>,
@@ -219,7 +224,7 @@ template <typename T, TestFeatures Features> bool testUSM(queue Q) {
       Passed &=
           testUSM<T, 32, 2, CheckMask, CheckProperties>(Q, 2, AlignElemProps);
       Passed &=
-          testUSM<T, 32, 2, CheckMask, CheckProperties>(Q, 2, AlignElemProps);
+          testUSM<T, 32, 2, CheckMask, !CheckProperties>(Q, 2, AlignElemProps);
     }
   } // TestPVCFeatures