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Francis Visoiu Mistrih 94c00d2e59 [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
..
2017-10-16 22:20:03 +00:00
2017-01-30 19:05:09 +00:00