I know there is a -S flag in ghc in haskell, and it generates a .s file which is an assembling file.
I am wondering whether GHC is possible to generate the assembler file with Intel syntax?
If it's based on GCC, it might support the -masm=intel flag. See How do you use gcc to generate assembly code in Intel syntax?
A less nice option is to use objdump on the compiled file:
objdump -d --disassembler-options=intel file.o