AOT cross-compiler produces different binaries than native AOT compiler #21548

using System;
namespace AotHelloWorld {
	class Program	{
		static void Main(string[] args) {
			Console.WriteLine("Hello AOT world!");
The application runs normally without AOT (using JIT compiler). Then I try to compile the same file by my AOT compilers:




    

Native (ARM):
root@beaglebone-lcd:/usr/lib/edaui# mono --aot=tool-prefix=arm-poky-linux-gnueabi- -O=all /usr/lib/edaui/AotHelloWorld.exe
Mono Ahead of Time compiler - compiling assembly /usr/lib/edaui/AotHelloWorld.exe
AOTID C71F3454-A3F7-C309-382A-48A0EF1A821C
Compiled: 2/2
Executing the native assembler: "arm-poky-linux-gnueabi-as"   -mfpu=vfp3 -o /tmp/mono_aot_Pqu6DF.o /tmp/mono_aot_Pqu6DF
Executing the native linker: arm-poky-linux-gnueabi-gcc --shared -Wl,-Bsymbolic -o /usr/lib/edaui/AotHelloWorld.exe.so.tmp  /tmp/mono_aot_Pqu6DF.o
Stripping the binary: "arm-poky-linux-gnueabi-strip" --strip-symbol=\$a --strip-symbol=\$d /usr/lib/edaui/AotHelloWorld.exe.so.tmp
JIT time: 3 ms, Generation time: 2 ms, Assembly+Link time: 292 ms.
ARM Cross-compiler (x86_64):
ubuntu@docker-desktop:~/yocto/yocto-image-eda/build/tmp/work/beaglebone_lcd-poky-linux-gnueabi/edaui/1.0.0-r0/edaui$ /home/ubuntu/yocto/yocto-image-eda/build/tmp/sysroots/x86_64-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-mono-sgen --aot=tool-prefix=/home/ubuntu/yocto/yocto-image-eda/build/tmp/sysroots/x86_64-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-,ld-flags=--sysroot=/home/ubuntu/yocto/yocto-image-eda/build/tmp/sysroots/beaglebone-lcd /home/ubuntu/yocto/yocto-image-eda/build/tmp/work/beaglebone_lcd-poky-linux-gnueabi/edaui/1.0.0-r0/edaui/AotHelloWorld.exe
Mono Ahead of Time compiler - compiling assembly /home/ubuntu/yocto/yocto-image-eda/build/tmp/work/beaglebone_lcd-poky-linux-gnueabi/edaui/1.0.0-r0/edaui/AotHelloWorld.exe
AOTID 0AF8005A-F850-B04E-BB92-8FDFD63B1162
Compiled: 2/2
Executing the native assembler: "/home/ubuntu/yocto/yocto-image-eda/build/tmp/sysroots/x86_64-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-as"   -mfpu=vfp3 -o /tmp/mono_aot_vftE8f.o /tmp/mono_aot_vftE8f
Executing the native linker: /home/ubuntu/yocto/yocto-image-eda/build/tmp/sysroots/x86_64-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-gcc --shared -Wl,-Bsymbolic -o /home/ubuntu/yocto/yocto-image-eda/build/tmp/work/beaglebone_lcd-poky-linux-gnueabi/edaui/1.0.0-r0/edaui/AotHelloWorld.exe.so.tmp  /tmp/mono_aot_vftE8f.o --sysroot=/home/ubuntu/yocto/yocto-image-eda/build/tmp/sysroots/beaglebone-lcd
Stripping the binary: "/home/ubuntu/yocto/yocto-image-eda/build/tmp/sysroots/x86_64-linux/usr/bin/arm-poky-linux-gnueabi/arm-poky-linux-gnueabi-strip" --strip-symbol=\$a --strip-symbol=\$d /home/ubuntu/yocto/yocto-image-eda/build/tmp/work/beaglebone_lcd-poky-linux-gnueabi/edaui/1.0.0-r0/edaui/AotHelloWorld.exe.so.tmp
JIT time: 2 ms, Generation time: 1 ms, Assembly+Link time: 65 ms.
Current Behavior
Both compilers give different results (the output binaries have different size).
For this test application both binaries work, but for my real application there is some difference and only native-compiled binary work. When I run my application with the cross-compiled binary, the application does not crash, but it fails to connect my device. Since the output logs are huge, I made this test application to make things simpler.
For further diagnosis I added asmonly command-line switch to both compilers. Now I have two different assembler files:
Native AOT compiler output: AotHelloWorld.exe.s-native.zip
Cross-compiler output: AotHelloWorld.exe.s-cross.zip
As you can see here there is quite a lot of differences.
Expected Behavior
I expect both compilers will produce exactly the same binaries.
On which platforms did you notice this
[ ] macOS

[x] Linux

[ ] Windows
Version Used:
Native:
Mono JIT compiler version 6.8.0.123 (tarball Wed Jul 13 19:11:14 UTC 2022)
      TLS:           __thread
      SIGSEGV:       normal
      Notifications: epoll
      Architecture:  armel,vfp+hard
      Disabled:      none
      Misc:          softdebug
      Interpreter:   yes
      LLVM:          supported, not enabled.
      Suspend:       preemptive
      GC:            sgen (concurrent by default)
Cross-compiler:
Mono JIT compiler version 6.8.0.123 (tarball Wed Aug 31 12:39:47 UTC 2022)
      SIGSEGV:       normal
      Notifications: epoll
      Architecture:  armel,vfp
      Disabled:      none
      Misc:          softdebug
      Interpreter:   yes
      LLVM:          supported, not enabled.
      Suspend:       hybrid
      GC:            sgen (concurrent by default)
I think the problem must be in wrong configure options (see the difference in the target architecture in the version output above), but I have no idea what I should change. Any ideas?