ggml-cpu: sycl: Re-enable exp f16 (ggml-org#14462)

Author: Rbiessy

ggml/src/ggml-cpu/CMakeLists.txt

@@ -589,4 +589,9 @@ function(ggml_add_cpu_backend_variant_impl tag_name)
     if (EMSCRIPTEN)
         set_target_properties(${GGML_CPU_NAME} PROPERTIES COMPILE_FLAGS "-msimd128")
     endif()
+
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "IntelLLVM")
+        # The compiler automatically enables "-ffast-math" which can cause NaNs in tests due to "-fassociative-math"
+        target_compile_options(${GGML_CPU_NAME} PRIVATE "-fno-associative-math")
+    endif()
 endfunction()

ggml/src/ggml-sycl/ggml-sycl.cpp

@@ -4215,6 +4215,7 @@ static bool ggml_backend_sycl_device_supports_op(ggml_backend_dev_t dev, const g
                 case GGML_UNARY_OP_GELU_QUICK:
                 case GGML_UNARY_OP_GELU_ERF:
                 case GGML_UNARY_OP_TANH:
+                case GGML_UNARY_OP_EXP:
                 case GGML_UNARY_OP_SGN:
                 case GGML_UNARY_OP_ABS:
                 case GGML_UNARY_OP_ELU:
@@ -4223,9 +4224,6 @@ static bool ggml_backend_sycl_device_supports_op(ggml_backend_dev_t dev, const g
 #else
                     return ggml_is_contiguous(op->src[0]) && (op->src[0]->type == GGML_TYPE_F32 && op->type == GGML_TYPE_F32) && (op->type == op->src[0]->type);
 #endif
-                case GGML_UNARY_OP_EXP:
-                     // Disable FP16 until we find out the root cause of failing fp16 sycl::exp
-                    return ggml_is_contiguous(op->src[0]) && (op->type == op->src[0]->type) && op->src[0]->type == GGML_TYPE_F32;
                 default:
                     return false;
             }