- Add getLSDAEncoding to the PowerPC backend.
- Greatly improve the comments to the getLSDAEncoding method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93796 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 547fa8e..684e1fc 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -250,12 +250,19 @@
setCodeModel(CodeModel::Small);
}
+/// getLSDAEncoding - Returns the LSDA pointer encoding. The choices are 4-byte,
+/// 8-byte, and target default. The CIE is hard-coded to indicate that the LSDA
+/// pointer in the FDE section is an "sdata4", and should be encoded as a 4-byte
+/// pointer by default. However, some systems may require a different size due
+/// to bugs or other conditions. We will default to a 4-byte encoding unless the
+/// system tells us otherwise.
+///
/// FIXME: This call-back isn't good! We should be using the correct encoding
/// regardless of the system. However, there are some systems which have bugs
/// that prevent this from occuring.
DwarfLSDAEncoding::Encoding X86TargetMachine::getLSDAEncoding() const {
if (Subtarget.isTargetDarwin() && Subtarget.getDarwinVers() != 10)
- return DwarfLSDAEncoding::FourByte;
+ return DwarfLSDAEncoding::Default;
return DwarfLSDAEncoding::EightByte;
}