aot: make precheck functions use short-call for xtensa

[yamt]

Note: this breaks AOT ABI for xtensa again because of a revert of an ABI-breaking change.

[yamt]

@dongsheng28849455 do you have any concerns?

[dongsheng28849455]

@dongsheng28849455 do you have any concerns?

No much concerns except for the need to test more cases since the LLVM base is changed, we need do some test for that.

[yamt]

@dongsheng28849455 do you have any concerns?

No much concerns except for the need to test more cases since the LLVM base is changed, we need do some test for that.

do you have some testsuite targeting xtensa aot?

[dongsheng28849455]

do you have some testsuite targeting xtensa aot?

we have spec/wasi test for xtensa, let's try.

[yamt]

i did some tests on nuttx on esp32s3-devkitc.

aot xip (--xip --size-level=0)

nsh> time "iwasm --dir=. toywasm.s0.xip.aot --wasi --wasi-dir . -- toywasm.wasm
--wasi hello.wasm"
hello

24.4400 sec
nsh>

aot (--size-level=0)

nsh> time "iwasm --dir=. toywasm.s0.aot --wasi --wasi-dir . -- toywasm.wasm --wa
si hello.wasm"
hello

16.1800 sec
nsh>

classic interpreter

nsh> time "iwasm --dir=. toywasm.wasm --wasi --wasi-dir . -- toywasm.wasm --wasi
 hello.wasm"
hello

57.1700 sec
nsh> 

native

nsh> time "toywasm --wasi --wasi-dir . toywasm.wasm --wasi hello.wasm"
hello

2.7400 sec
nsh>

file sizes:

-rwxr-xr-x  1 yamamoto  staff      177 Jun 19  2023 hello.wasm*
-rw-r--r--  1 yamamoto  staff  1857100 May 20 15:31 toywasm.s0.aot
-rw-r--r--  1 yamamoto  staff  2335540 May 20 15:31 toywasm.s0.xip.aot
-rwxr-xr-x  1 yamamoto  staff   584131 May 20 15:21 toywasm.wasm*