Import SIMD feature and add some workload samples (#438)

core/iwasm/compilation/simd/simd_common.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+#include "simd_common.h"
+
+LLVMValueRef
+simd_pop_v128_and_bitcast(const AOTCompContext *comp_ctx,
+                          const AOTFuncContext *func_ctx,
+                          LLVMTypeRef vec_type,
+                          const char *name)
+{
+    LLVMValueRef number;
+
+    POP_V128(number);
+
+    if (!(number =
+            LLVMBuildBitCast(comp_ctx->builder, number, vec_type, name))) {
+        HANDLE_FAILURE("LLVMBuildBitCast");
+        goto fail;
+    }
+
+    return number;
+fail:
+    return NULL;
+}
+
+bool
+simd_bitcast_and_push_v128(const AOTCompContext *comp_ctx,
+                           const AOTFuncContext *func_ctx,
+                           LLVMValueRef vector,
+                           const char *name)
+{
+    if (!(vector = LLVMBuildBitCast(comp_ctx->builder, vector, V128_i64x2_TYPE,
+                                    name))) {
+        HANDLE_FAILURE("LLVMBuildBitCast");
+        goto fail;
+    }
+
+    /* push result into the stack */
+    PUSH_V128(vector);
+
+    return true;
+fail:
+    return false;
+}