Francis Visoiu Mistrih
66d2c269dc
[AsmPrinterDwarf] Add support for .cfi_restore directive
...
As of today we only use .cfi_offset to specify the offset of a CSR, but
we never use .cfi_restore when the CSR is restored.
If we want to perform a more advanced type of shrink-wrapping, we need
to use .cfi_restore in order to switch the CFI state between blocks.
This patch only aims at adding support for the directive.
Differential Revision: https://reviews.llvm.org/D36114
llvm-svn: 317199
2017-11-02 12:00:58 +00:00
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