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| author | Francis Visoiu Mistrih <francisvm@yahoo.com> | 2017-11-02 12:00:58 +0000 |
|---|---|---|
| committer | Francis Visoiu Mistrih <francisvm@yahoo.com> | 2017-11-02 12:00:58 +0000 |
| commit | 66d2c269dc153c36cb35898082a38eb47bbb4ce0 (patch) | |
| tree | 80a1abeec5edff352463a3b5c6c79ae83d75968f /llvm/lib/CodeGen/MIRPrinter.cpp | |
| parent | e73b85d1abfe7363164c5a7e5f58c1ceaeeb62f9 (diff) | |
| download | llvm-66d2c269dc153c36cb35898082a38eb47bbb4ce0.zip llvm-66d2c269dc153c36cb35898082a38eb47bbb4ce0.tar.gz llvm-66d2c269dc153c36cb35898082a38eb47bbb4ce0.tar.bz2 | |
[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
Diffstat (limited to 'llvm/lib/CodeGen/MIRPrinter.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MIRPrinter.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MIRPrinter.cpp b/llvm/lib/CodeGen/MIRPrinter.cpp index f8da8d3..aae4858 100644 --- a/llvm/lib/CodeGen/MIRPrinter.cpp +++ b/llvm/lib/CodeGen/MIRPrinter.cpp @@ -1243,6 +1243,12 @@ void MIPrinter::print(const MCCFIInstruction &CFI, printCFIRegister(CFI.getRegister(), OS, TRI); OS << ", " << CFI.getOffset(); break; + case MCCFIInstruction::OpRestore: + OS << "restore "; + if (CFI.getLabel()) + OS << "<mcsymbol> "; + printCFIRegister(CFI.getRegister(), OS, TRI); + break; default: // TODO: Print the other CFI Operations. OS << "<unserializable cfi operation>"; |