Compiling object file from an intermediate file of gcc?

GIMPLE was a binary internal format which is hard to dump fully and reload back correctly. Comparing with LLVM, LLVM IR was designed to be dumpable and reloadable into usual file (text and binary format of such files are fully-convertible from each to other). You can run Clang fronted to emit LLVMIR, then start opt program with some optimizations, then with other, and there will be LLVM IR bitcode files between phases.

And then you can start codegeneration from IR bitcode into native code (even, in theory, into not the same platform, see PNaCl project).

There's no built-in facility to translate the text GIMPLE representation back to original GIMPLE internal representation.

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