Oren Ben Simhon dbd4bba1ec [X86] Support of no_caller_saved_registers attribute
This patch implements the LLVM part for no_caller_saved_registers attribute as appears here: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=5ed3cc7b66af4758f7849ed6f65f4365be8223be.
In order to implement the attribute, we use the dynamic CSR mechanism to remove returned/passed arguments from the function regmask/CSR list.

Differential Revision: https://reviews.llvm.org/D31876

llvm-svn: 302020
2017-05-03 13:07:19 +00:00
2017-02-25 02:46:53 +00:00
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