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d44308
2018 May 01
0
IPRA and conditionally reserved registers
Hi Kit,
I see you have been working on IPRA (https://reviews.llvm.org/D45308),
and would therefore like to bring up an issue with it I am looking into
on SystemZ (see https://reviews.llvm.org/D46232).
I first realized that %r14, the return register, must be saved and
restored with IPRA enabled, since otherwise the function can't return.
This is a callee saved regis...