hi, When I compile Gcc with MSYS2 on Windows.I have encountered a thorny issue. In order to output the Intel assembly file by default, I modified the gcc/config/i386/i386.opt file as follows masm= Target RejectNegative Joined Enum(asm_dialect) Var(ix86_asm_dialect) Init(ASM_INTEL) Use given assembler dialect. however, An error occurred when compiling to libgcc/config/i386/sfp-exceptions.c file, it tell me : C:\MSYS\MSYS32\tmp\cctIKXUx.s: Assembler messages: C:\MSYS\MSYS32\tmp\cctIKXUx.s:69: Error: no such instruction: `fdivs DWORD PTR [esp]' C:\MSYS\MSYS32\tmp\cctIKXUx.s:135: Error: no such instruction: `fdivs DWORD PTR [esp]' I checked Intel's developer's manual,I can't find a description of this directive. So I want to know what's going on.