[LLVMdev] IMUL x86 instruction

[James Courtier-Dutton]

On Jul 13, 2014 5:57 PM, "Tim Northover" <t.p.northover at gmail.com> wrote:
>
> > For context, I am writing a x86 to LLVM IR decompiler, so wish to
> > represent IMUL in LLVM IR.
>
> From a decompiler's perspective, it probably represents 3
> instructions: 2 sexts (imul is the signed one, isn't it?) and a mul.
> With the usual caveats you'll be dealing with over EFLAGS.
>

I will take a bit more than that, if the following instructions only use
edx.
Are there any llvm ir instructions that can break a 64bit value into 2
32bit values.
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