[llvm-dev] Finding caller-saved registers at a function call site
Sanjoy Das via llvm-dev
llvm-dev at lists.llvm.org
Mon Jun 27 09:57:35 PDT 2016
Rob Lyerly wrote:
> <regmask %BH %BL %BP %BPL %BX %EBP %EBX %RBP %RBX %R12 %R13 %R14
> %R15 %R12B %R13B %R14B %R15B %R12D %R13D %R14D %R15D %R12W %R13W %R14W
IIUC the regmask lists the registers that are preserved *by* the
callee. The registers that would have to be preserved by the caller
are the complement of this set.
It'll be helpful if you give us a high level picture of the problem
you're trying to solve.
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