Enable aot compiler with llvm-14/15 (#1252)

Enable aot compiler and jit based on llvm-14.0 and llvm-15.0git,
replace LLVMBuildLoad/LLVMBuildInBoundsGEP/LLVMBuildCall with
LLVMBuildLoad2/LLVMBuildInBoundsGEP2/LLVMBuildCall2, and pass
them with related types, so as to meet the requirements of opaque
pointers.

And fix several compilation errors for llvm-14.0/15.0git.

Most spec cases and standalone cases are tested.

core/iwasm/compilation/aot_llvm_extra.cpp

@@ -492,7 +492,11 @@ aot_apply_llvm_new_pass_manager(AOTCompContext *comp_ctx)
 
         if (!disable_llvm_lto) {
             /* Apply LTO for AOT mode */
+#if LLVM_VERSION_MAJOR < 14
             MPM.addPass(PB.buildLTODefaultPipeline(OL, NULL));
+#else
+            MPM.addPass(PB.buildLTOPreLinkDefaultPipeline(OL));
+#endif
         }
         else {
             MPM.addPass(PB.buildPerModuleDefaultPipeline(OL));