[LLVMdev] Explicit register usage in LLVM assembly
Frits van Bommel
fvbommel at gmail.com
Fri Jul 8 12:30:22 PDT 2011
On 8 July 2011 21:10, Yiannis Tsiouris <yiannis.tsiouris at gmail.com> wrote:
> The problem with that is the case of an 'invoke' call. According to the
> semantics of the invoke instruction the return value is not available when
> a stack unwind happens. From the Language Reference Manual:
> "For the purposes of the SSA form, the definition of the value returned by
> the 'invoke' instruction is deemed to occur on the edge from the current
> block to the "normal" label. If the callee unwinds then no return value is
> In that case, how can i get the values of the pinned registers, i.e. HP, P
> and NSP, needed in the Fail code block?
You could store them in the exception, assuming your compiler is the
one generating the code that throws it...
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