Implement call Fast JIT function from LLVM JIT jitted code (#1714)

Basically implement the Multi-tier JIT engine.
And update document and wamr-test-suites script.

tests/wamr-test-suites/test_wamr.sh

@@ -16,7 +16,7 @@ function help()
     echo "-c clean previous test results, not start test"
     echo "-s {suite_name} test only one suite (spec)"
     echo "-m set compile target of iwasm(x86_64\x86_32\armv7_vfp\thumbv7_vfp\riscv64_lp64d\riscv64_lp64)"
-    echo "-t set compile type of iwasm(classic-interp\fast-interp\jit\aot\fast-jit)"
+    echo "-t set compile type of iwasm(classic-interp\fast-interp\jit\aot\fast-jit\multi-tier-jit)"
     echo "-M enable multi module feature"
     echo "-p enable multi thread feature"
     echo "-S enable SIMD feature"
@@ -29,7 +29,7 @@ function help()
 OPT_PARSED=""
 WABT_BINARY_RELEASE="NO"
 #default type
-TYPE=("classic-interp" "fast-interp" "jit" "aot" "fast-jit")
+TYPE=("classic-interp" "fast-interp" "jit" "aot" "fast-jit" "multi-tier-jit")
 #default target
 TARGET="X86_64"
 ENABLE_MULTI_MODULE=0
@@ -80,7 +80,8 @@ do
         t)
         echo "set compile type of wamr " ${OPTARG}
         if [[ ${OPTARG} != "classic-interp" && ${OPTARG} != "fast-interp" \
-            && ${OPTARG} != "jit" && ${OPTARG} != "aot" && ${OPTARG} != "fast-jit" ]]; then
+            && ${OPTARG} != "jit" && ${OPTARG} != "aot"
+            && ${OPTARG} != "fast-jit" && ${OPTARG} != "multi-tier-jit" ]]; then
             echo "*----- please varify a type of compile when using -t! -----*"
             help
             exit 1
@@ -201,6 +202,12 @@ readonly FAST_JIT_COMPILE_FLAGS="\
     -DWAMR_BUILD_FAST_JIT=1 \
     -DWAMR_BUILD_SPEC_TEST=1"
 
+readonly MULTI_TIER_JIT_COMPILE_FLAGS="\
+    -DWAMR_BUILD_TARGET=${TARGET} \
+    -DWAMR_BUILD_INTERP=1 -DWAMR_BUILD_FAST_INTERP=0 \
+    -DWAMR_BUILD_FAST_JIT=1 -DWAMR_BUILD_JIT=1 \
+    -DWAMR_BUILD_SPEC_TEST=1"
+
 readonly COMPILE_FLAGS=(
         "${CLASSIC_INTERP_COMPILE_FLAGS}"
         "${FAST_INTERP_COMPILE_FLAGS}"
@@ -208,6 +215,7 @@ readonly COMPILE_FLAGS=(
         "${ORC_LAZY_JIT_COMPILE_FLAGS}"
         "${AOT_COMPILE_FLAGS}"
         "${FAST_JIT_COMPILE_FLAGS}"
+        "${MULTI_TIER_JIT_COMPILE_FLAGS}"
     )
 
 # TODO: with libiwasm.so only
@@ -397,6 +405,10 @@ function spec_test()
           echo "fast-jit doesn't support multi-thread feature yet, skip it"
           return
         fi
+        if [[ $1 == 'multi-tier-jit' ]]; then
+          echo "multi-tier-jit doesn't support multi-thread feature yet, skip it"
+          return
+        fi
     fi
 
     if [[ ${ENABLE_XIP} == 1 ]]; then
@@ -641,7 +653,7 @@ function trigger()
 
             "fast-jit")
                 echo "work in fast-jit mode"
-                # jit
+                # fast-jit
                 BUILD_FLAGS="$FAST_JIT_COMPILE_FLAGS $EXTRA_COMPILE_FLAGS"
                 build_iwasm_with_cfg $BUILD_FLAGS
                 for suite in "${TEST_CASE_ARR[@]}"; do
@@ -649,6 +661,16 @@ function trigger()
                 done
             ;;
 
+            "multi-tier-jit")
+                echo "work in multi-tier-jit mode"
+                # multi-tier-jit
+                BUILD_FLAGS="$MULTI_TIER_JIT_COMPILE_FLAGS $EXTRA_COMPILE_FLAGS"
+                build_iwasm_with_cfg $BUILD_FLAGS
+                for suite in "${TEST_CASE_ARR[@]}"; do
+                    $suite"_test" multi-tier-jit
+                done
+            ;;
+
             *)
             echo "unexpected mode, do nothing"
             ;;