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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-11-03 08:17:25 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-11-03 08:17:25 +0000 |
| commit | 73dc85293f003c0e81b1f3e6a255a24f1f8b6db6 (patch) | |
| tree | d47c802239005955de6518927110703828608564 /llvm/lib/CodeGen | |
| parent | 4ec5abffae8cd3957f69d247b92212ae92a43036 (diff) | |
| download | bcm5719-llvm-73dc85293f003c0e81b1f3e6a255a24f1f8b6db6.tar.gz bcm5719-llvm-73dc85293f003c0e81b1f3e6a255a24f1f8b6db6.zip | |
[X86] Generate .cfi_adjust_cfa_offset correctly when pushing arguments
When push instructions are being used to pass function arguments on
the stack, and either EH or debugging are enabled, we need to generate
.cfi_adjust_cfa_offset directives appropriately. For (synch) EH, it is
enough for the CFA offset to be correct at every call site, while
for debugging we want to be correct after every push.
Darwin does not support this well, so don't use pushes whenever it
would be required.
Differential Revision: http://reviews.llvm.org/D13767
llvm-svn: 251904
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp index 8efa03a8862..9ede04c4c1b 100644 --- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp @@ -216,6 +216,9 @@ void AsmPrinter::emitCFIInstruction(const MCCFIInstruction &Inst) const { case MCCFIInstruction::OpDefCfaOffset: OutStreamer->EmitCFIDefCfaOffset(Inst.getOffset()); break; + case MCCFIInstruction::OpAdjustCfaOffset: + OutStreamer->EmitCFIAdjustCfaOffset(Inst.getOffset()); + break; case MCCFIInstruction::OpDefCfa: OutStreamer->EmitCFIDefCfa(Inst.getRegister(), Inst.getOffset()); break; |
