Compiler errors occurs when emitting 32bit binaries

[hyungseok]

I discovered that the latest x86-64 ICX 2024.0.0 emits invalid registers when it generates x86 binaries. 

This error has been identified in 2 opcodes.

Buggy code.

```

void bug(int num) {

__asm__(

".intel_syntax noprefix\n"

"enqcmd SP, ZMMWORD PTR [EAX]\n"

"enqcmds SP, ZMMWORD PTR [EAX]\n"

);

}

```

Compile Option: -m32

Compiled code

```

bug:

push ebp

mov ebp,esp

mov eax,DWORD PTR [ebp+0x8]

enqcmd sp,[bx+si]

enqcmds sp,[bx+si]

pop ebp

ret

```

I tested it through godbolt.

https://godbolt.org/z/TqEKnrTYj

[Alex_Y_Intel]

Your question has been escalated to our internal team. 

[Alex_Y_Intel]

2024.2 compiler will soon be released, please try it with the newer compiler.

[Alex_Y_Intel]

The issues had been fixed in 2024.2.

"SP" in the original reproducer should be changed to "ESP" to be able to compile successfully with compiler 2024.2:

repro.c

void bug(int num)

{

__asm__(

".intel_syntax noprefix\n"

"enqcmd ESP, ZMMWORD PTR [EAX]\n"

"enqcmds ESP, ZMMWORD PTR [EAX]\n"

);

}

icx -m32 repro.c -S

Assembly output:

.text

.file "repro.c"

.globl bug # -- Begin function bug

.p2align 4, 0x90

.type bug,@function

bug: #

.cfi_startproc

# %bb.0:

#APP

enqcmd (%eax), %esp

enqcmds (%eax), %esp

#NO_APP

retl

.Lfunc_end0:

.size bug, .Lfunc_end0-bug

.cfi_endproc

# -- End function

.ident "Intel(R) oneAPI DPC++/C++ Compiler 2024.2.0 (2024.2.0.20240602)"

.section ".note.GNU-stack","",@progbits

[Alex_Y_Intel]

Please also note that 32-bit support has been deprecated.