feature: Enable support for cl_intel_subgroup_buffer_prefetch

This change enables support for cl_intel_subgroup_buffer_prefetch extension for
PVC and later.

Related-To: GSD-7825
Signed-off-by: Ratajewski, Andrzej <andrzej.ratajewski@intel.com>

Source: 521add6

Author: pszymich

opencl/test/unit_test/xe_hpc_core/pvc/test_cl_device_caps_pvc.cpp

@@ -24,4 +24,5 @@ PVCTEST_F(PvcClDeviceCapsTests, givenPvcProductWhenDeviceCapsInitializedThenAddP
     EXPECT_TRUE(hasSubstr(dInfo.deviceExtensions, std::string("cl_khr_subgroup_named_barrier")));
     EXPECT_TRUE(hasSubstr(dInfo.deviceExtensions, std::string("cl_intel_subgroup_extended_block_read")));
     EXPECT_TRUE(hasSubstr(dInfo.deviceExtensions, std::string("cl_intel_subgroup_2d_block_io")));
+    EXPECT_TRUE(hasSubstr(dInfo.deviceExtensions, std::string("cl_intel_subgroup_buffer_prefetch")));
 }

shared/source/helpers/compiler_product_helper.h

@@ -65,6 +65,7 @@ class CompilerProductHelper {
     virtual bool isSubgroupNamedBarrierSupported() const = 0;
     virtual bool isSubgroupExtendedBlockReadSupported() const = 0;
     virtual bool isSubgroup2DBlockIOSupported() const = 0;
+    virtual bool isSubgroupBufferPrefetchSupported() const = 0;
     virtual bool isForceToStatelessRequired() const = 0;
     virtual bool failBuildProgramWithStatefulAccessPreference() const = 0;
     virtual bool isDotIntegerProductExtensionSupported() const = 0;
@@ -114,6 +115,7 @@ class CompilerProductHelperHw : public CompilerProductHelper {
     bool isSubgroupNamedBarrierSupported() const override;
     bool isSubgroupExtendedBlockReadSupported() const override;
     bool isSubgroup2DBlockIOSupported() const override;
+    bool isSubgroupBufferPrefetchSupported() const override;
     bool isForceToStatelessRequired() const override;
     bool failBuildProgramWithStatefulAccessPreference() const override;
     bool isDotIntegerProductExtensionSupported() const override;

shared/source/helpers/compiler_product_helper_base.inl

@@ -195,6 +195,9 @@ std::string CompilerProductHelperHw<gfxProduct>::getDeviceExtensions(const Hardw
     if (isSubgroup2DBlockIOSupported()) {
         extensions += "cl_intel_subgroup_2d_block_io ";
     }
+    if (isSubgroupBufferPrefetchSupported()) {
+        extensions += "cl_intel_subgroup_buffer_prefetch ";
+    }
     if (isDotIntegerProductExtensionSupported()) {
         extensions += "cl_khr_integer_dot_product ";
     }

shared/source/helpers/compiler_product_helper_before_xe_hpc.inl

@@ -31,4 +31,9 @@ bool CompilerProductHelperHw<gfxProduct>::isSubgroup2DBlockIOSupported() const {
     return false;
 }
 
+template <PRODUCT_FAMILY gfxProduct>
+bool CompilerProductHelperHw<gfxProduct>::isSubgroupBufferPrefetchSupported() const {
+    return false;
+}
+
 } // namespace NEO

shared/source/helpers/compiler_product_helper_xe_hpc_and_later.inl

@@ -35,4 +35,9 @@ bool CompilerProductHelperHw<gfxProduct>::isSubgroup2DBlockIOSupported() const {
     return true;
 }
 
+template <PRODUCT_FAMILY gfxProduct>
+bool CompilerProductHelperHw<gfxProduct>::isSubgroupBufferPrefetchSupported() const {
+    return true;
+}
+
 } // namespace NEO

shared/test/unit_test/helpers/compiler_product_helper_tests.cpp

@@ -126,6 +126,18 @@ HWTEST2_F(CompilerProductHelperFixture, GivenPreXeHpcThenSubgroup2DBlockIOIsNotS
     EXPECT_FALSE(compilerProductHelper.isSubgroup2DBlockIOSupported());
 }
 
+HWTEST2_F(CompilerProductHelperFixture, GivenXeHpcAndLaterThenSubgroupBufferPrefetchIsSupported, IsAtLeastXeHpcCore) {
+    auto &compilerProductHelper = pDevice->getCompilerProductHelper();
+
+    EXPECT_TRUE(compilerProductHelper.isSubgroupBufferPrefetchSupported());
+}
+
+HWTEST2_F(CompilerProductHelperFixture, GivenPreXeHpcThenSubgroupBufferPrefetchIsNotSupported, IsAtMostXeHpgCore) {
+    auto &compilerProductHelper = pDevice->getCompilerProductHelper();
+
+    EXPECT_FALSE(compilerProductHelper.isSubgroupBufferPrefetchSupported());
+}
+
 HWTEST2_F(CompilerProductHelperFixture, GivenCompilerProductHelperThenBFloat16ConversionIsSupportedBasedOnReleaseHelper, IsNotXeHpcCore) {
     auto &compilerProductHelper = pDevice->getCompilerProductHelper();
     auto releaseHelper = pDevice->getReleaseHelper();